WO2017195670A1

WO2017195670A1 - Insulating protective member, manufacturing method for same, construction method, furnace internal member, and heating furnace

Info

Publication number: WO2017195670A1
Application number: PCT/JP2017/016993
Authority: WO
Inventors: 鈴木　光雄; 小林　友幸; 晃啓矢野; 祥裕桂; 匡弘岩本; 節小林
Original assignee: 三菱ケミカル株式会社; 中外炉工業株式会社
Priority date: 2016-05-13
Filing date: 2017-04-28
Publication date: 2017-11-16
Also published as: JP6838606B2; JPWO2017195670A1; TW201742963A

Abstract

Provided are an insulating protective member that is easy to install so as to adhere to a construction face without a gap even if the construction face is curved, a manufacturing method for same, and a furnace internal member and a heating furnace in which the insulating protective member is installed. An insulating protective member 1 comprises a layered body 2 wherein an alumina fiber needle blanket 5 is folded back, and a base 3 composed of an alumina fiber needle blanket mounted on one face of the layered body on the folded back portion side of the needle blanket 5. The folded back portion of the needle blanket 5 of the layered body 2 is joined to the base by being sewn together with an alumina thread 4 or the like.

Description

断熱保護部材、その製造方法、施工方法、炉内部材及び加熱炉Thermal insulation protective member, its manufacturing method, construction method, in-furnace member and heating furnace

　本発明は、無機繊維成形体よりなる断熱保護部材と、その製造方法と、この断熱保護部材を用いた炉内部材及び加熱炉に関する。 The present invention relates to a heat insulating protective member made of an inorganic fiber molded body, a manufacturing method thereof, an in-furnace member using the heat insulating protective member, and a heating furnace.

　鉄鋼業の加熱炉などの高温炉には、屈曲部、角部、曲面部を有する高温配管や、ウォーキングビーム式のスキッドポスト等の円柱形状の部材があり、これらを保護、断熱する部材として、無機繊維集合体や無機繊維成形体が用いられている。中でもニードリング加工された無機繊維集合体（ニードルブランケット）は、その軽量性、易加工性、耐熱衝撃性、耐風食性、低熱伝導率性に優れるといった特性を利用し、多く用いられている。ニードルブランケットは、これを圧縮あるいは積層した成形体とし、ベニアリング工法やブロック積層体を取り付け施工されている。 High-temperature furnaces such as heating furnaces in the steel industry include high-temperature pipes with bent parts, corner parts, curved parts, and columnar members such as walking beam type skid posts. Inorganic fiber aggregates and inorganic fiber molded bodies are used. Above all, a needling-processed inorganic fiber aggregate (needle blanket) is often used because of its characteristics such as lightness, easy processability, thermal shock resistance, wind erosion resistance, and low thermal conductivity. The needle blanket is formed by compressing or laminating it, and a veneering method or a block laminate is attached to the needle blanket.

　このような断熱保護部材では、炉内で発生するスケールやアルカリ物質による腐食の問題がある。中でも鉄鋼業の加熱炉においては、炉内のスケールによりアルミナ・シリカ系無機繊維が、特にＦｅＯとの低融点化合物を生成し、そこを起点として浸食、脆性化が起こることによる早期劣化の問題がある。 Such a heat insulating protective member has a problem of corrosion caused by scales or alkali substances generated in the furnace. In particular, in the heating furnace of the steel industry, alumina / silica-based inorganic fibers generate low melting point compounds, especially with FeO, due to the scale in the furnace, and there is a problem of early deterioration due to erosion and brittleness starting from there. is there.

　そこで、上記課題を解決するために、無機繊維集合体に無機質ゾルやバインダー等を付加した無機繊維成形体が複数報告されている。 Therefore, in order to solve the above-described problems, a plurality of inorganic fiber molded bodies in which an inorganic sol, a binder, or the like is added to the inorganic fiber aggregate have been reported.

　例えば、特許文献１には、ブランケット積層体の炉内側の面に、焼成によりＡｌ_２Ｏ_３を生じさせる成分及びＣａＯを生じさせる成分を含んだ液を含浸させた無機繊維質断熱材ブロックが記載されている。 For example, Patent Document 1 describes an inorganic fibrous heat insulating material block in which a furnace inner surface of a blanket laminate is impregnated with a liquid containing a component that generates Al ₂ O ₃ by firing and a component that generates CaO. Has been.

　特許文献１に記載の無機繊維質断熱材ブロックは、保形板で両側から挟んで積層方向に圧縮し、結束バンドを掛け回して圧縮状態に保形した形状となっている。この無機繊維質断熱材ブロックは、炉内面に配列した後、結束バンドを切断し、結束バンド及び保形板を撤去するように施工される。 The inorganic fibrous heat insulating material block described in Patent Document 1 has a shape that is compressed in the stacking direction by being sandwiched from both sides by a shape-retaining plate, and is held in a compressed state by wrapping a binding band. After arranging this inorganic fibrous heat insulating material block on the furnace inner surface, it is constructed so as to cut the binding band and remove the binding band and the shape retaining plate.

特開２０１５－８１７５２JP2015-81752A

　上記特許文献１の無機繊維質断熱材ブロックは、結束バンドを掛け回して圧縮状態に保形した荷姿となっているため、炉内面が湾曲している場合、施工するに際して炉内面に沿わせるように湾曲させることはできない。そのため、施工対象面が小曲率平均にて湾曲しているときには、無機繊維質断熱材ブロックを、施工対象面との間に隙間を生じさせることなく施工することが容易ではない。 Since the inorganic fiber heat insulating material block of the above-mentioned patent document 1 has a package shape in which a binding band is wound around and held in a compressed state, when the furnace inner surface is curved, it is made to conform to the furnace inner surface during construction. Can not be curved. Therefore, when the construction target surface is curved with a small curvature average, it is not easy to construct the inorganic fibrous heat insulating material block without causing a gap between the construction target surface and the construction target surface.

　本発明は、施工対象面が湾曲していても施工対象面に隙間なく密着させるように施工することが容易な断熱保護部材と、その製造方法及び施工方法と、この断熱保護部材が施工された炉内部材及び加熱炉とを提供することを目的とする。 The present invention is a heat insulation protective member that is easy to construct so as to be closely adhered to the construction target surface even if the construction target surface is curved, its manufacturing method and construction method, and the heat insulation protective member. It aims at providing an in-furnace member and a heating furnace.

　本発明の要旨は、以下の通りである。 The gist of the present invention is as follows.

［１］　アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、
　該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有する断熱保護部材であって、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化物前駆体含有液が未乾燥状態で付着している含浸部が設けられており、
　該含浸部の水分量が、該含浸部の無機繊維１００質量部に対して５０～４００質量部であり、
　該断熱保護部材全体の水分量が断熱保護部材全体の無機繊維１００質量部に対して５０～４００質量部であり、
　前記酸化物前駆体含有液は、焼成により酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を生じさせる成分を含有しており、
　前記含浸部においては、酸化物前駆体含有液が酸化物換算量として該含浸部の無機繊維１００質量部に対して２～５０質量部となるように付着している断熱保護部材。 [1] A laminate in which a folded back of an alumina fiber needle blanket is laminated;
A heat-insulating protective member having a base material portion made of an alumina fiber needle blanket attached to one surface of the laminate on the folded portion side of the needle blanket,
The folded portion of the needle blanket and the base material portion are combined,
At least a part of the laminate and the base material portion is provided with an impregnation portion where the oxide precursor-containing liquid is attached in an undried state,
The amount of water in the impregnated part is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnated part,
The moisture content of the whole heat insulating protective member is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers of the whole heat insulating protective member,
The oxide precursor-containing liquid contains a component that produces an alumina-calcia composition containing aluminum oxide and calcium oxide by firing,
In the impregnation part, an insulating protection member in which the oxide precursor-containing liquid is attached in an amount of 2 to 50 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnation part as an oxide equivalent amount.

［２］　前記含浸部におけるＡｌとＣａのモル比（Ａｌ／Ｃａ）が１０～３３０である、［１］に記載の断熱保護部材。 [2] The heat insulating protective member according to [1], wherein a molar ratio of Al to Ca (Al / Ca) in the impregnated portion is 10 to 330.

［３］　前記積層体の高さＨが３０～１５０ｍｍである、［１］又は［２］に記載の断熱保護部材。 [3] The heat insulating protective member according to [1] or [2], wherein the height H of the laminate is 30 to 150 mm.

［４］　前記積層体の嵩密度が０．１０～０．７５ｇ／ｃｍ^３である、［１］～［３］のいずれかに記載の断熱保護部材。 [4] The heat insulating protective member according to any one of [1] to [3], wherein the laminated body has a bulk density of 0.10 to 0.75 g / cm ³ .

［５］　前記積層体と基材部とはアルミナ質の糸によって縫着されて接合されている、［１］～［４］のいずれかに記載の断熱保護部材。 [5] The heat insulating protective member according to any one of [1] to [4], wherein the laminate and the base material portion are sewn and joined with an alumina-based thread.

［６］　前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の酸化物前駆体含有液量が該対向端部よりも多い、［１］～［５］のいずれかに記載の断熱保護部材。 [6] The oxide precursor contained at the end portion having the joint portion with the base material portion at the end portion having the joint portion between the base material portion and the base material portion in the vertical direction of the laminate and the opposite end portion thereof The heat insulating protective member according to any one of [1] to [5], wherein the liquid amount is larger than that of the opposite end.

［７］　前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の水分量が該対向端部よりも多い、請求項１～６のいずれかに記載の断熱保護部材。 [7] The moisture content of the end portion having the joint portion with the base material portion is opposite to the end portion having the joint portion between the base material portion and the base material portion in the vertical direction of the laminate and the opposite end portion thereof. The heat-insulating protective member according to any one of claims 1 to 6, wherein the heat-insulating protective member is larger than the ends.

　［８］　前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の嵩密度が該対向端部と比較して高い、［１］～［７］のいずれかに記載の断熱保護部材。 [8] The bulk density of the end portion having the joint portion with the base material portion is opposite to the end portion having the joint portion between the base material portion and the base material portion in the vertical direction of the laminate and the opposite end portion thereof. The heat insulating protective member according to any one of [1] to [7], which is higher than an end portion.

［９］　前記基材部、該基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、各部における無機繊維の嵩密度が、基材部、該基材部との結合部を有する端部、該対向端部の順に高くなる、［１］～［８］のいずれかに記載の断熱保護部材。 [9] The bulk density of the inorganic fiber in each part of the base part, the end part having the joint part of the base part and the base part in the vertical direction, and the opposite end part thereof is the base part and the base part. The heat-insulating protective member according to any one of [1] to [8], which is higher in the order of an end portion having a coupling portion with the portion and the opposite end portion.

［１０］　［１］～［９］のいずれかに記載の断熱保護部材を製造する方法であって、
　前記積層体を構成するためのニードルブランケットと前記基材部とを重ね合わせ、前記折り返し部となる部分で接合する工程と、
　前記積層体を構成するためのニードルブランケットをこの接合部分で基材部と垂直方向に折り立てる工程と
を有する断熱保護部材の製造方法。 [10] A method for producing the heat insulating protective member according to any one of [1] to [9],
Overlaying the needle blanket and the base material part for constituting the laminate, and joining at the part to be the folded part,
The manufacturing method of the heat insulation protection member which has the process of folding up the needle blanket for comprising the said laminated body in a perpendicular direction with a base material part in this junction part.

［１１］　［１］ないし［９］のいずれかに記載の断熱保護部材を、炉体の内面又は炉内部材の表面に取り付ける工程を有する断熱保護部材の施工方法。 [11] A method for constructing a heat insulating protective member comprising a step of attaching the heat insulating protective member according to any one of [1] to [9] to an inner surface of a furnace body or a surface of a member in the furnace.

［１２］　前記断熱保護部材の基材部と反対側の面を、炉体の内面又は炉内部材の表面に取り付ける工程を有する、［１１］に記載の断熱保護部材の施工方法。 [12] The construction method of the heat insulation protection member according to [11], including a step of attaching a surface of the heat insulation protection member opposite to the base material portion to the inner surface of the furnace body or the surface of the in-furnace member.

［１３］　前記炉内部材の施工対象面が凸曲面である、［１１］又は［１２］に記載の断熱保護部材の施工方法。 [13] The construction method of the heat insulation protective member according to [11] or [12], wherein the surface to be constructed of the furnace inner member is a convex curved surface.

［１４］　前記炉内部材は、スキッドポスト又はスキッドビームである、［１３］に記載の断熱保護部材の施工方法。 [14] The construction method of the heat insulation protection member according to [13], wherein the in-furnace member is a skid post or a skid beam.

［１５］　［１］ないし［９］のいずれかに記載の断熱保護部材が表面に装着されている炉内部材。 [15] An in-furnace member on which the heat insulating protective member according to any one of [1] to [9] is mounted.

［１６］　前記炉内部材はスキッドポスト又はスキッドビームである、［１５］に記載の炉内部材。 [16] The in-furnace member according to [15], wherein the in-furnace member is a skid post or a skid beam.

［１７］　前記断熱保護部材は、アルミナ・カルシア系組成物を含有する、［１５］又は［１６］に記載の炉内部材。 [17] The in-furnace member according to [15] or [16], wherein the heat insulation protective member contains an alumina-calcia composition.

［１８］　［１］ないし［９］のいずれかに記載の断熱保護部材が炉体内面又は炉内部材の表面に装着されている加熱炉。 [18] A heating furnace in which the heat insulating protective member according to any one of [1] to [9] is mounted on the inner surface of the furnace body or the surface of the in-furnace member.

［１９］　前記炉内部材はスキッドポスト又はスキッドビームである、［１８］に記載の加熱炉。 [19] The heating furnace according to [18], wherein the in-furnace member is a skid post or a skid beam.

［２０］　前記断熱保護部材は、アルミナ・カルシア系組成物を含有する、［１８］又は［１９］に記載の加熱炉。 [20] The heating furnace according to [18] or [19], wherein the heat insulating protective member contains an alumina-calcia composition.

［２１］　断熱保護部材が表面に装着されている炉内部材であって、
　前記断熱保護部材は、アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有し、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を含有することを特徴とする炉内部材。 [21] An in-furnace member in which a heat insulating protective member is mounted on the surface,
The heat-insulating protective member is a base material comprising a laminate in which a folded back of an alumina fiber needle blanket is laminated, and an alumina fiber needle blanket attached to one surface of the laminated body on the folded portion side of the needle blanket And
The folded portion of the needle blanket and the base material portion are combined,
An in-furnace member comprising an alumina / calcia composition containing aluminum oxide and calcium oxide in at least a part of the laminate and the base material.

［２２］　前記炉内部材はスキッドポスト又はスキッドビームである、［２１］に記載の炉内部材。 [22] The in-furnace member according to [21], wherein the in-furnace member is a skid post or a skid beam.

［２３］　断熱保護部材が炉体内面又は炉内部材の表面に装着されている加熱炉であって、
　前記断熱保護部材は、アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有し、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を含有することを特徴とする加熱炉。 [23] A heating furnace in which the heat insulating protection member is attached to the inner surface of the furnace body or the surface of the in-furnace member,
The heat-insulating protective member is a base material comprising a laminate in which a folded back of an alumina fiber needle blanket is laminated, and an alumina fiber needle blanket attached to one surface of the laminated body on the folded portion side of the needle blanket And
The folded portion of the needle blanket and the base material portion are combined,
A heating furnace comprising an alumina calcia composition containing aluminum oxide and calcium oxide in at least a part of the laminate and the base material.

［２４］　前記炉内部材はスキッドポスト又はスキッドビームである、［２３］に記載の加熱炉。 [24] The heating furnace according to [23], wherein the in-furnace member is a skid post or a skid beam.

　本発明の断熱保護部材は、アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、該積層体の１つの面に取り付けられた基材部とを有している。この断熱保護部材は、積層体を施工対象面に当てるようにして施工される場合には、該積層体の構成要素であるニードルブランケットが厚み方向において変形圧縮することで内外周の周長差を吸収する。その結果、施工対象面が小曲率半径にて凸に湾曲していても、断熱保護部材を湾曲させて施工対象面に密着させることができる。 The heat insulation protective member of the present invention has a laminate in which folded bodies of needle blankets made of alumina fibers are laminated, and a base material portion attached to one surface of the laminate. When this thermal insulation protective member is constructed so that the laminate is applied to the surface to be constructed, the needle blanket that is a component of the laminate is deformed and compressed in the thickness direction to reduce the circumferential length difference between the inner and outer circumferences. Absorb. As a result, even if the construction target surface is convexly curved with a small radius of curvature, the heat insulating protection member can be curved and brought into close contact with the construction target surface.

　本発明の断熱保護部材にあっては、ニードルブランケットが基材部と垂直方向に配列されている。ニードルブランケットは、一般に繊維がニードルブランケットのマット面方向に配向しているので、本発明の断熱保護部材のニードルブランケット折り返し体の積層体にあっては、繊維が基材部と垂直面方向に配向している。従って、この断熱保護部材を施工対象面に被覆した場合、積層体のニードルブランケット中の繊維は施工対象面と垂直面方向に配向している。 In the heat insulation and protection member of the present invention, the needle blankets are arranged in a direction perpendicular to the base material portion. In the needle blanket, since the fibers are generally oriented in the mat surface direction of the needle blanket, in the laminated body of the needle blanket folded body of the heat insulation protection member of the present invention, the fibers are oriented in the direction perpendicular to the base material portion. is doing. Therefore, when this heat insulation protective member is coat | covered on the construction object surface, the fiber in the needle blanket of a laminated body is orientated in the perpendicular | vertical surface direction with the construction object surface.

　繊維が炉内露呈面方向に配向している基材部は、炉内雰囲気に晒されると、経時的に劣化したり、風食作用によって飛散・剥離消失し易い。これに対し、ニードルブランケット折り返し体の積層体は、上記の通り繊維が施工対象面と垂直面方向すなわち断熱保護部材の炉内露呈面と垂直面方向に配向しているため、非常に耐風食性に優れている。 When the base material portion in which the fibers are oriented in the direction of the exposed surface in the furnace is exposed to the atmosphere in the furnace, it is likely to deteriorate with time or to scatter and peel off due to wind erosion. On the other hand, in the laminate of the needle blanket folded body, the fibers are oriented in the direction perpendicular to the surface to be constructed, that is, in the direction perpendicular to the in-furnace exposed surface of the heat-insulating protective member, as described above. Are better.

　このため、炉内に設けられた本発明の断熱保護部材は、長期にわたって優れた断熱保護作用を維持する。 For this reason, the heat insulating protective member of the present invention provided in the furnace maintains an excellent heat insulating protective action over a long period of time.

　本発明の断熱保護部材にあっては、無機繊維のニードルブランケットに酸化物前駆体含有液を含浸させることにより、耐スケール性が向上する。 In the heat insulating protective member of the present invention, the scale resistance is improved by impregnating the needle blanket of inorganic fiber with the oxide precursor-containing liquid.

　本発明では、含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）が１０～３３０であることにより、高温まで焼成した時に、無機繊維内部に適量のＣａＯが拡散する。無機繊維内部にＣａＯが存在することで、無機繊維中にＦｅＯが拡散しにくくなる。つまり無機繊維とＦｅＯとの反応が抑制され、断熱保護部材の耐スケール性が向上する。 In the present invention, since the molar ratio of Al to Ca (Al / Ca) in the entire impregnated portion is 10 to 330, an appropriate amount of CaO diffuses inside the inorganic fiber when fired to a high temperature. The presence of CaO inside the inorganic fiber makes it difficult for FeO to diffuse into the inorganic fiber. That is, the reaction between the inorganic fibers and FeO is suppressed, and the scale resistance of the heat insulating protective member is improved.

　本発明の断熱保護部材は、施工されるまでは、含浸させた酸化物前駆体含有液を未乾燥状態としておくことにより、可撓性を有し、特に屈曲部、角部、曲面部の施工性と密着性に優れる。本発明の断熱保護部材は、水分量がコントロールされることにより、機械強度や施工性に優れる。 The heat insulation protective member of the present invention has flexibility by leaving the impregnated oxide precursor-containing liquid in an undried state until construction, and in particular, construction of bent portions, corner portions, and curved portions. Excellent in adhesion and adhesion. The heat insulation protective member of the present invention is excellent in mechanical strength and workability by controlling the water content.

　本発明の断熱保護部材は、スキッドポスト又はスキッドビームに簡便に被覆及び固定できる。 The heat insulating protective member of the present invention can be easily coated and fixed on a skid post or a skid beam.

実施の形態に係る断熱保護部材の斜視図である。It is a perspective view of the heat insulation protection member which concerns on embodiment. 図１のＩＩ部分の断面図である。It is sectional drawing of the II part of FIG. 図３ａ，３ｂは実施の形態に係る断熱保護部材の製造方法を示す断面図である。3a and 3b are cross-sectional views illustrating a method for manufacturing a heat insulating protection member according to an embodiment. 実施の形態に係る断熱保護部材の斜視図である。It is a perspective view of the heat insulation protection member which concerns on embodiment. 実施の形態に係る断熱保護部材の断面図である。It is sectional drawing of the heat insulation protection member which concerns on embodiment. 実施の形態に係る断熱保護部材の断面図である。It is sectional drawing of the heat insulation protection member which concerns on embodiment. 実施の形態に係る断熱保護部材の施工方法の説明図である。It is explanatory drawing of the construction method of the heat insulation protection member which concerns on embodiment. 図８ａは断熱保護部材が施工された炉内部材としてのスキッドポスト及びスキッドビームの斜視図、図８ｂは図８ａのVIIIb－VIIIb線断面図である。FIG. 8a is a perspective view of a skid post and a skid beam as the in-furnace member on which the heat insulating protection member is applied, and FIG. 8b is a sectional view taken along the line VIIIb-VIIIb of FIG. 8a.

　以下、図面を参照して実施の形態について説明する。 Hereinafter, embodiments will be described with reference to the drawings.

　図１，２は実施の形態に係る断熱保護部材１を示している。断熱保護部材１は、アルミナ繊維のニードルブランケットを折り返した折り返し体を積層してなる積層体２と、該ニードルブランケットの折り返し部分が露呈した該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部３とを有し、該積層体２の折り返し部分と該基材部３とが結合されている。基材部３は、積層体２の積層方向に延在する長方形状である。この断熱保護部材１の少なくとも一部に、後述の酸化物前駆体含有液が含浸されている。 1 and 2 show a heat insulating protection member 1 according to the embodiment. The heat insulation protective member 1 includes a laminate 2 formed by laminating a folded body obtained by folding a needle blanket of alumina fiber, and an alumina fiber needle attached to one surface of the laminated body where a folded portion of the needle blanket is exposed. The base part 3 made of a blanket is provided, and the folded portion of the laminate 2 and the base part 3 are joined. The base material portion 3 has a rectangular shape extending in the stacking direction of the stacked body 2. At least a part of the heat insulation protective member 1 is impregnated with an oxide precursor-containing liquid described later.

　断熱保護部材１を製造するには、例えば、図３ａのように、ニードルブランケット５と基材部３とを重ね合わせ、ニードルブランケット５の一端辺５ａから所定距離の箇所と基材部３とをアルミナ質の縫糸４で縫合する。図３ａでは該積層体２の折り返し部分と該基材部３との結合手段において、アルミナ質の縫糸４で縫合するが、アルミナ・シリカ系接着剤等の耐熱性接着剤で該積層体２の折り返し部分と該基材部３との接着部分を接着してもよい。 In order to manufacture the heat insulating protection member 1, for example, as shown in FIG. 3a, the needle blanket 5 and the base material portion 3 are overlapped, and a portion at a predetermined distance from the one end side 5a of the needle blanket 5 and the base material portion 3 are combined. Suture is sewn with an alumina thread 4. In FIG. 3a, in the joining means between the folded portion of the laminate 2 and the base material portion 3, the laminate 2 is sewn with an alumina-made sewing thread 4, but the laminate 2 is bonded with a heat-resistant adhesive such as an alumina / silica adhesive. You may adhere | attach the adhesion part of a folding | turning part and this base-material part 3. FIG.

　図３ｂの通り、ニードルブランケット５の一端側５ｂと、それに続く部分５ｃとを基材部３と垂直方向に折り立てて重ねる。次いで、該部分５ｃに引き続く部分５ｄを折り返し、該部分５ｄとそれに引き続く部分５ｅとの境目を縫糸４で基材部３に縫合する。以下、この手順を繰り返し、その後前駆体液を含浸させることにより、断熱保護部材１が製造される。 As shown in FIG. 3b, one end side 5b of the needle blanket 5 and the subsequent portion 5c are folded and overlapped with the base member 3 in the vertical direction. Next, the portion 5d following the portion 5c is folded back, and the boundary between the portion 5d and the subsequent portion 5e is sewn to the base material portion 3 with the sewing thread 4. Hereinafter, the heat insulation protective member 1 is manufactured by repeating this procedure and then impregnating the precursor liquid.

　積層体２を構成するニードルブランケット５の各部分５ｂ，５ｃ，５ｄは基材部３に対し垂直となっている。積層体２及び基材部３の長手方向長さＬは等しく、幅Ｗも等しい。 The

portions

5 b, 5 c, 5 d of the needle blanket 5 constituting the laminate 2 are perpendicular to the base material portion 3. The length L in the longitudinal direction of the laminate 2 and the base material portion 3 is equal, and the width W is also equal.

　断熱保護部材１をスキッドポスト又はスキッドビーム等の断熱被覆に用いる場合、積層体２を構成するニードルブランケット５の厚みＴ_１は５～２５ｍｍ特に１０～１５ｍｍ程度が好適であり、基材部３の厚みＴ_２は５～２５ｍｍ特に１０～１５ｍｍ程度が好適である。断熱保護部材１の長手方向長さＬは５００～３０００ｍｍ特に１０００～２０００ｍｍ程度が好適である。幅Ｗは１００～８００ｍｍ特に３００～６００ｍｍ程度が好適である。積層体２の高さ（基材部３と垂直方向の高さ）Ｈは通常３０～１５０ｍｍ、好ましくは４０～１２０ｍｍ、特に好ましくは５０～９０ｍｍ程度が好適である。 When the heat insulating protective member 1 is used for heat insulating coating such as a skid post or a skid beam, the thickness T ₁ of the needle blanket 5 constituting the laminate 2 is preferably about 5 to 25 mm, particularly about 10 to 15 mm. the thickness _{T 2} are about 5 ~ 25 mm, especially 10 ~ 15 mm is suitable. The length L in the longitudinal direction of the heat insulating protective member 1 is preferably about 500 to 3000 mm, particularly about 1000 to 2000 mm. The width W is preferably about 100 to 800 mm, particularly about 300 to 600 mm. The height (height in the direction perpendicular to the base material portion 3) H of the laminate 2 is usually 30 to 150 mm, preferably 40 to 120 mm, particularly preferably about 50 to 90 mm.

　断熱保護部材１の嵩密度は、通常０．１０～０．７５ｇ／ｃｍ^３、好ましくは０．１５～０．６０ｇ／ｃｍ^３、特に好ましくは０．２０～０．４５ｇ／ｃｍ^３程度である。
　積層体２の嵩密度は、通常０．１０～０．７５ｇ／ｃｍ^３、好ましくは０．１５～０．６０ｇ／ｃｍ^３、特に好ましくは０．２０～０．４５ｇ／ｃｍ^３程度である。 The bulk density of the heat-insulating protection member 1 is generally 0.10 ~ 0.75g / cm ^3, is preferably 0.15 ~ 0.60g / cm ^3, particularly preferably about 0.20 ~ 0.45g / cm ³ .
The bulk density of the laminate 2 is usually 0.10 ~ 0.75g / cm ^3, preferably 0.15 ~ 0.60g / cm ^3, particularly preferably about 0.20 ~ 0.45g / cm ^3.

　積層体２は、基材部と垂直方向において基材部との結合部を有する端部とその対向端部を有する。なかでも、基材部との結合部を有する端部の嵩密度が対向端部と比較して高いことが好ましい。 The laminate 2 has an end portion having a joint portion with the base material portion in a direction perpendicular to the base material portion and an opposite end portion thereof. Especially, it is preferable that the bulk density of the edge part which has a coupling | bond part with a base material part is high compared with an opposing edge part.

　基材部との結合部を有する端部の嵩密度は、好ましくは０．１５～０．７５ｇ／ｃｍ^３、より好ましくは０．２０～０．６５ｇ／ｃｍ^３、特に好ましくは０．２５～０．６０ｇ／ｃｍ^３程度である。 The bulk density of the end portion having the bonding portion with the base material portion is preferably 0.15 to 0.75 g / cm ³ , more preferably 0.20 to 0.65 g / cm ³ , and particularly preferably 0.25 to It is about 0.60 g / cm ³ .

　対向端部の嵩密度は、好ましくは０．１５～０．７５ｇ／ｃｍ^３、より好ましくは０．２０～０．６０ｇ／ｃｍ^３、特に好ましくは０．２５～０．５０ｇ／ｃｍ^３程度である。 The bulk density of the opposite end is preferably about 0.15 to 0.75 g / cm ³ , more preferably about 0.20 to 0.60 g / cm ³ , and particularly preferably about 0.25 to 0.50 g / cm ³ . is there.

　基材部３の嵩密度は、好ましくは０．１０～０．７５ｇ／ｃｍ^３、より好ましくは０．１５～０．６０ｇ／ｃｍ^３、特に好ましくは０．２０～０．４５ｇ／ｃｍ^３程度である。 The bulk density of the base portion 3 is preferably 0.10 ~ 0.75 g / cm ^3, more preferably 0.15 ~ 0.60 g / cm ^3, particularly preferably about 0.20 ~ 0.45 g / cm ³ It is.

　断熱保護部材１は、図７のように、施工対象物１０の外面に、基材部３と反対側１ｆを押し付けるようにして施工される。この場合、断熱保護部材１の基材部３と反対側１ｆを矢印Ｐ方向（即ち基材部３と平行方向）に押し縮め、該反対側１ｆを凹に湾曲させて施工対象物１０の外面に密着させる。 As shown in FIG. 7, the heat insulation protective member 1 is constructed so as to press the side 1 f opposite to the base material portion 3 against the outer surface of the construction object 10. In this case, the side 1f opposite to the base material part 3 of the heat insulating protective member 1 is compressed in the direction of arrow P (that is, the direction parallel to the base material part 3), and the opposite side 1f is bent concavely so Adhere to.

　施工対象物の曲率が高い場合、断熱保護部材１を湾曲させて密着させようとしても、曲げに対する反対側１ｆの反発力が強くＰの逆方向に剥がれてくることがある。その際は、図４の断熱保護部材１Ａの積層体２Ａのように、少なくとも一部のニードルブランケット５の一端側５ｂの長さを短くし、断熱保護部材１Ａの基材部３と反対側に凹所７を形成してもよい。凹所７の深さは、積層体２Ａの高さＨの１０～７０％特に３０～５０％程度が好適である。 When the curvature of the construction object is high, the repulsive force on the opposite side 1f with respect to bending may be strong and peel away in the opposite direction of P even if the heat insulating protective member 1 is bent and brought into close contact. In that case, the length of at least one end side 5b of the needle blanket 5 is shortened so as to be opposite to the base material portion 3 of the heat insulation protection member 1A as in the laminated body 2A of the heat insulation protection member 1A in FIG. The recess 7 may be formed. The depth of the recess 7 is preferably about 10 to 70%, particularly about 30 to 50% of the height H of the laminate 2A.

　上記アルミナ質の縫糸４としては、アルミナ長繊維の糸が好ましい。なお、アルミナ質以外の耐火材料製縫糸を用いてもよい。 The alumina-based sewing thread 4 is preferably an alumina long fiber thread. In addition, you may use the sewing thread made from refractory materials other than an alumina material.

　上記の断熱保護部材１，１Ａの積層体２，２Ａでは、長い長方形状のニードルブランケット５がつづら折り状に折り返されているが、図５の断熱保護部材１Ｂの積層体２Ｂのように、Ｕ字形に１回だけ折り返された形状のニードルブランケット８によって積層体２Ｂを構成してもよい。このニードルブランケット８の折り返し部も、アルミナ質の縫糸４によって基材部３に縫着されている。 In the

laminates

2 and 2A of the heat

insulation protection members

1 and 1A, the long rectangular needle blanket 5 is folded back into a zigzag shape. However, like the laminate 2B of the heat insulation protection member 1B in FIG. Alternatively, the laminated body 2B may be configured by the needle blanket 8 having a shape folded only once. The folded portion of the needle blanket 8 is also sewn to the base material portion 3 with the alumina sewing thread 4.

　この断熱保護部材１Ｂは、ニードルブランケット８を縫糸４によって縫着した後、ニードルブランケット８を基材部３と垂直方向に折り立てることを繰り返して製造することができる。また、この断熱保護部材１Ｂは、図１に示す断熱保護部材１の基材部３と反対側１ｆを基材部３と平行方向に切断除去することによっても製造することができる。 The heat insulating protective member 1B can be manufactured by repeatedly folding the needle blanket 8 in the direction perpendicular to the base material portion 3 after the needle blanket 8 is sewn with the sewing thread 4. Moreover, this heat insulation protective member 1B can be manufactured also by cutting and removing the 1f opposite side to the base material part 3 of the heat insulation protection member 1 shown in FIG.

　図５の断熱保護部材１Ｂでは、基材部３と反対側１ｆにおいてニードルブランケット８の端面は面一状に揃っているが、図６の断熱保護部材１Ｃのように、該反対側１ｆに、前記断熱保護部材１Ａと同様の凹所７を形成し、前記Ｐ方向への押し縮めを容易としてもよい。 In the heat insulation protective member 1B of FIG. 5, the end surface of the needle blanket 8 is aligned on the opposite side 1f to the base material part 3, but on the opposite side 1f like the heat insulation protective member 1C of FIG. A recess 7 similar to that of the heat insulating protection member 1A may be formed to facilitate the compression in the P direction.

　図５，６の断熱保護部材１Ｂ，１Ｃでは、積層体２Ｂ，２Ｃを構成する各ニードルブランケット８の端面（切り口面）が前記反対側面１ｆに露呈している。このニードルブランケット８の端面は、断熱保護部材１，１Ａのように、該反対側１ｆの折り返し部がニードルブランケット５の長手方向面すなわちマット面よりなる折り返し部に比べて、後述の接着剤層１１となじみ易い。また、図５，６の断熱保護部材１Ｂ，１Ｃでは、反対側１ｆが平面となっており、施工対象面に全面的に密着させ易い。さらに、施工対象面が平らの時、密着させやすいので、炉内壁面の広範囲に施工が容易なベニアリング材等として使用することもできる。 5 and 6, in the heat insulating and protecting members 1B and 1C, the end surfaces (cut surfaces) of the needle blankets 8 constituting the

laminated bodies

2B and 2C are exposed on the opposite side surface 1f. The end surface of the needle blanket 8 has an adhesive layer 11 which will be described later as compared to a folded portion in which the folded portion on the opposite side 1f is a longitudinal surface of the needle blanket 5, that is, a mat surface, as in the heat insulating

protection members

1 and 1A. Easy to get used to. Moreover, in the heat insulation protection members 1B and 1C of FIGS. 5 and 6, the opposite side 1f is a flat surface, which is easily adhered to the entire construction target surface. Furthermore, since it is easy to make it adhere when the construction target surface is flat, it can also be used as a veneering material that can be constructed easily over a wide range of the furnace inner wall.

　図７は、断熱保護部材１を施工対象物１０に施工する方法を示している。断熱保護部材１の施工に先立って、施工対象物１０の表面にアルミナセメントを増粘剤、分散剤などの添加剤と共に水で混練した混練物よりなる接着剤層１１を所定厚み（例えば０．３～１０ｍｍ特に０．５～５ｍｍ程度）に塗着しておく。接着剤層１１はアルミナセメント以外に耐火骨材粒子又は耐火繊維を含んでもよい。 FIG. 7 shows a method of constructing the thermal insulation protection member 1 on the construction object 10. Prior to the construction of the heat insulating protective member 1, an adhesive layer 11 made of a kneaded material obtained by kneading alumina cement with water and an additive such as a thickener on the surface of the construction object 10 with a predetermined thickness (for example, 0. 0). 3 to 10 mm, especially 0.5 to 5 mm). The adhesive layer 11 may contain refractory aggregate particles or refractory fibers in addition to the alumina cement.

　断熱保護部材１の基材部３と反対側１ｆを、矢印Ｐ方向に押し縮めた状態で施工対象物１０の表面の接着剤層１１に押し付ける。所定枚数の断熱保護部材１で施工対象物１０の施工対象面を覆った後、必要に応じ断熱保護部材１の外周に酸化物前駆体含有液含浸ニードルブランケットを巻き付けてもよい。また、外周をテープやロープなどで固定してもよい。さらに、施工対象面の凹凸が激しい場合、酸化物前駆体含有液含浸ニードルブランケットを施工対象物１０の表面に巻き付けて、凹凸を軽減し、断熱保護部材１の基材部３と反対側１ｆを、矢印Ｐ方向に押し縮めた状態で施工対象物１０の表面の接着剤層１１に押し付けてもよい。 The side 1f opposite to the base material part 3 of the heat insulation protective member 1 is pressed against the adhesive layer 11 on the surface of the construction object 10 in a state of being compressed in the arrow P direction. After covering the construction target surface of the construction object 10 with a predetermined number of the heat insulation protection members 1, an oxide precursor-containing liquid-impregnated needle blanket may be wound around the outer periphery of the heat insulation protection member 1 as necessary. Further, the outer periphery may be fixed with a tape or a rope. Furthermore, when the unevenness | corrugation of a construction object surface is intense, an oxide precursor containing liquid impregnation needle blanket is wound around the surface of the construction target object 10, the unevenness | corrugation is reduced, and the base material part 3 opposite side 1f of the heat insulation protective member 1 is made. Alternatively, it may be pressed against the adhesive layer 11 on the surface of the construction object 10 while being compressed in the direction of the arrow P.

　断熱保護部材１Ａ～１Ｃも上記と同一手順にて施工される。 The insulation protection members 1A to 1C are also constructed in the same procedure as above.

　図７のようにして施工された断熱保護部材１の積層体２にあっては、ニードルブランケット５が炉内露呈面すなわち基材部３の外面と垂直面方向に配向している。ニードルブランケット５にあっては、繊維がマット面方向に配向しているから、積層体２の繊維は基材部３と垂直面方向に配向している。 7, the needle blanket 5 is oriented in the direction perpendicular to the exposed surface in the furnace, that is, the outer surface of the base member 3. In the needle blanket 5, since the fibers are oriented in the mat surface direction, the fibers of the laminate 2 are oriented in the direction perpendicular to the base material portion 3.

　基材部３を構成するニードルブランケット中の繊維は、炉内露呈面方向に配向しているので、炉を操業したときの炉内の高温ガス流れによって剥ぎ取られ易く、風食作用を受け易い。これに対し、積層体２の繊維は、炉内露呈面と垂直面方向に配向しているので、基材部３が消失して積層体２が直に炉内雰囲気に露呈した状態となっても、繊維が剥ぎ取られにくく、風食作用を受けにくい。そのため、本発明の断熱保護部材１，１Ａ～１Ｃは極めて長期にわたって、優れた断熱及び保護作用を維持する。 Since the fibers in the needle blanket constituting the base material part 3 are oriented in the direction of the exposed surface in the furnace, they are easily peeled off by the high-temperature gas flow in the furnace when the furnace is operated, and are susceptible to wind erosion. . On the other hand, since the fibers of the laminate 2 are oriented in a direction perpendicular to the furnace exposure surface, the base material portion 3 disappears and the laminate 2 is directly exposed to the furnace atmosphere. However, the fiber is hardly peeled off and is not easily affected by wind erosion. Therefore, the heat insulation and

protection members

1, 1A to 1C of the present invention maintain excellent heat insulation and protection for a very long time.

　図８ａ，８ｂを参照して、本発明の断熱保護部材１が施工されたウォーキングビーム式加熱炉について説明する。本発明の断熱保護部材が施工されるスキッドポスト２１は、鋼製のパイプ状であり、炉床Ｇから立設されている。なお、スキッドポスト２１とは、鋼製のパイプ状そのものだけでなく、該鋼製のパイプ状の周囲に耐火キャスタブル等の既存の断熱材を有するものも包含するものである。複数本のスキッドポスト２１に支承されるようにしてスキッドビーム２２が設置されている。スキッドポスト２１の上部には耐火キャスタブルよりなる耐火被覆２３が施されている。スキッドポスト２１のうち、この耐火被覆２３の下側に本発明の断熱保護部材１を施工する。断熱保護部材１は、基材部３と反対側１ｆをスキッドポスト２１に向けて施工される。 Referring to FIGS. 8a and 8b, a walking beam heating furnace in which the heat insulation protective member 1 of the present invention is constructed will be described. The skid post 21 on which the heat insulation protective member of the present invention is constructed is a steel pipe shape, and is erected from the hearth G. The skid post 21 includes not only a steel pipe shape itself but also one having an existing heat insulating material such as a refractory castable around the steel pipe shape. A skid beam 22 is installed so as to be supported by a plurality of skid posts 21. A fireproof coating 23 made of fireproof castable is applied to the upper part of the skid post 21. Of the skid post 21, the heat insulating protection member 1 of the present invention is applied below the fireproof coating 23. The heat insulating protection member 1 is constructed with the side 1 f opposite to the base material portion 3 facing the skid post 21.

　スキッドビーム２２の上半側にも耐火キャスタブルよりなる耐火被覆２４が施されている。スキッドビーム２２の下半側に本発明の断熱保護部材１を施工する。断熱保護部材１は、基材部３と反対側１ｆをスキッドビーム２２に向けて施工される。 A fireproof coating 24 made of fireproof castable is also applied to the upper half side of the skid beam 22. The heat insulation protection member 1 of the present invention is applied to the lower half side of the skid beam 22. The heat insulating protection member 1 is constructed with the side 1 f opposite to the base material portion 3 facing the skid beam 22.

　本発明の断熱保護部材１は、炉内部材の施工対象面が凸曲面であるスキッドポスト２１又はスキッドビーム２２の下半側に施工される、特に該積層体を施工対象面に当てるようにして施工されることが、該積層体の構成要素であるニードルブランケットの厚み方向が変形圧縮することで内外周の周長差を吸収する。その結果、施工対象面が小曲率半径にて凸に湾曲していても、断熱保護部材を湾曲させて施工対象面に密着させることができる点で好ましい。 The heat insulation protective member 1 of the present invention is constructed on the lower half side of the skid post 21 or the skid beam 22 in which the construction target surface of the in-furnace member is a convex curved surface, and in particular, the laminate is applied to the construction target surface. Being constructed absorbs the circumferential length difference between the inner and outer circumferences by deforming and compressing the thickness direction of the needle blanket that is a component of the laminate. As a result, even if the construction target surface is convexly curved with a small radius of curvature, it is preferable in that the heat insulating protection member can be curved and brought into close contact with the construction target surface.

　本発明の断熱保護部材がスキッドポスト２１又はスキッドビーム２２に施工された状態において、基材部３、基材部との結合部を有する端部とその対向端部において、各部における無機繊維の嵩密度が基材部、該基材部との結合部を有する端部、該対向端部の順に高くなることが好ましい。 In the state in which the heat insulation protective member of the present invention is applied to the skid post 21 or the skid beam 22, the bulk of the inorganic fiber in each part at the end part having the joint part with the base part 3 and the base part and the opposite end part thereof. It is preferable that the density be increased in the order of the base portion, the end portion having the joint portion with the base portion, and the opposing end portion.

　断熱保護部材１の施工前にスキッドポスト２１及びスキッドビーム２２の外面に接着剤層１１（図８ａ，８ｂでは図示略）を塗布しておく。 Before the thermal insulation protection member 1 is applied, the adhesive layer 11 (not shown in FIGS. 8a and 8b) is applied to the outer surfaces of the skid post 21 and the skid beam 22.

　施工された断熱保護部材１の外周側に、酸化物前駆体含有液が含浸されたアルミナ繊維ニードルブランケット３０を付着させた後、テープやロープで固定する。このテープやロープは、その後、炉内を昇温させた際に焼失する。また、この昇温によって酸化物前駆体が焼成され、酸化物となり、ニードルブランケット内のアルミナ繊維同士の結合のみならず、該折り返し体の界面同士の結合が該酸化物の焼結により強固になるため、断熱保護部材１の形状が保持される。 After attaching the alumina fiber needle blanket 30 impregnated with the oxide precursor-containing liquid to the outer peripheral side of the heat insulating protective member 1 that has been applied, it is fixed with a tape or rope. The tape and rope are then burned out when the temperature in the furnace is raised. In addition, the oxide precursor is baked by this temperature rise to become an oxide, and not only the bonds between the alumina fibers in the needle blanket but also the bonds between the interfaces of the folded bodies are strengthened by sintering of the oxide. Therefore, the shape of the heat insulation protective member 1 is maintained.

　なかでも、施工された断熱保護部材１の焼成後における基材部、基材部との結合部を有する端部とその対向端部における嵩密度が基材部、基材部との結合部を有する端部、そして対向端部の順に高くなることが好ましい。 Especially, the base material part after the fired construction of the heat insulation protective member 1, the end part having the joint part with the base material part and the bulk density at the opposite end part are the base part and the joint part with the base material part. It is preferable that it becomes high in order of the edge part which has, and an opposing edge part.

　断熱保護部材１Ａ～１Ｃも同様にして施工される。 The insulation protection members 1A to 1C are similarly constructed.

　以下、本発明で用いるのに好適なニードルブランケットについて詳細に説明するが、本発明はこれらの内容に特定はされない。 Hereinafter, a needle blanket suitable for use in the present invention will be described in detail, but the present invention is not limited to these contents.

　本発明の断熱保護部材は、好ましくはニードルブランケットの少なくとも一部に未乾燥状態で酸化物前駆体含有液が付着している含浸部が設けられ、該含浸部の水分量が、該含浸部の無機繊維１００質量部に対して５０～４００質量部であり、該断熱保護部材全体の水分量が断熱保護部材全体の無機繊維１００質量部に対して５０～４００質量部であり、前記酸化物前駆体含有液は、焼成により酸化アルミニウム（Ａｌ_２Ｏ_３）及び酸化カルシウム（ＣａＯ）を含むアルミナ・カルシア系組成物（Ａｌ_２Ｏ_３及びＣａＯは単体であってもよく複酸化物であってもよい。）を生じさせる成分を含有しており、前記含浸部においては、酸化物前駆体含有液が酸化物換算量として該含浸部の無機繊維１００質量部に対して２～５０質量部となるように付着しており、前記含浸部全体（無機繊維と付着物との全体）におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）が１０以上３３０以下である。 The heat insulating protective member of the present invention is preferably provided with an impregnated part in which an oxide precursor-containing liquid adheres in an undried state on at least a part of the needle blanket, and the water content of the impregnated part is the amount of the impregnated part. 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fiber, and the moisture content of the entire heat insulating protective member is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fiber of the entire heat insulating protective member. The body-containing liquid may be an alumina / calcia composition containing aluminum oxide (Al ₂ O ₃ ) and calcium oxide (CaO) by firing (Al ₂ O ₃ and CaO may be a simple substance or a complex oxide). In the impregnated part, the oxide precursor-containing liquid is 2 to 50 parts by mass with respect to 100 parts by mass of the inorganic fiber in the impregnated part. The molar ratio (Al / Ca) of Al to Ca in the entire impregnation part (the whole of the inorganic fibers and the deposit) is 10 or more and 330 or less.

［ニードルブランケット］
　本発明に用いられる無機繊維のニードルブランケット（以下、単に「ブランケット」又は「ニードルブランケット」と称す場合がある。）は、実質的に繊維径３μｍ以下の繊維を含まない無機繊維の繊維集合体にニードリング処理が施されたものが好ましい。このようなニードルブランケットを用いることにより、本発明の断熱保護部材の耐風食性を高めることができる。 [Needle blanket]
The inorganic fiber needle blanket used in the present invention (hereinafter sometimes simply referred to as “blanket” or “needle blanket”) is a fiber aggregate of inorganic fibers substantially free of fibers having a fiber diameter of 3 μm or less. Those subjected to needling treatment are preferred. By using such a needle blanket, the wind erosion resistance of the heat insulation protective member of the present invention can be enhanced.

＜無機繊維＞
　ニードルブランケットを構成する無機繊維としては、特に制限がなく、シリカ、アルミナ／シリカ、これらを含むジルコニア、スピネル、チタニア及びカルシア等の単独、又は複合繊維が挙げられるが、特に好ましいのは耐熱性、繊維強度（靭性）、安全性の点で、アルミナ／シリカ系繊維、特に多結晶質アルミナ／シリカ系繊維である。 <Inorganic fiber>
The inorganic fiber constituting the needle blanket is not particularly limited, and examples thereof include silica, alumina / silica, zirconia containing these, spinel, titania and calcia alone, or a composite fiber. From the viewpoint of fiber strength (toughness) and safety, it is an alumina / silica fiber, particularly a polycrystalline alumina / silica fiber.

　アルミナ／シリカ系繊維のアルミナ／シリカの組成比（質量比）は６５～９８／３５～２のムライト組成、又はハイアルミナ組成と呼ばれる範囲にあることが好ましく、さらに好ましくは７０～９５／３０～５、特に好ましくは７０～７４／３０～２６の範囲である。 The composition ratio (mass ratio) of alumina / silica fiber is preferably in the range of 65 to 98/35 to 2 called mullite composition or high alumina composition, more preferably 70 to 95/30 to 5, particularly preferably in the range of 70 to 74/30 to 26.

　本発明においては、無機繊維の８０質量％以上、好ましくは９０質量％以上、特に好ましくはその全量が上記ムライト組成の多結晶アルミナ／シリカ系繊維であることが好ましい。また、無機繊維中のＡｌに対するＣａのモル比率（Ｃａ／Ａｌ）は０．０３以下であることが好ましく、特に無機繊維はＣａを含まないことが好ましい。 In the present invention, it is preferable that the inorganic fiber is 80% by mass or more, preferably 90% by mass or more, and particularly preferably the total amount thereof is a polycrystalline alumina / silica fiber having the above mullite composition. In addition, the molar ratio of Ca to Al (Ca / Al) in the inorganic fiber is preferably 0.03 or less, and it is particularly preferable that the inorganic fiber does not contain Ca.

　この無機繊維は、好ましくは繊維径３μｍ以下の繊維を実質的に含まない。ここで繊維径３μｍ以下の繊維を実質的に含まないとは、繊維径３μｍ以下の繊維が全繊維重量の０．１質量％以下であることをさす。 This inorganic fiber is preferably substantially free of fibers having a fiber diameter of 3 μm or less. Here, “substantially free of fibers having a fiber diameter of 3 μm or less” means that the fibers having a fiber diameter of 3 μm or less is 0.1 mass% or less of the total fiber weight.

　無機繊維の平均繊維径は５～８μｍであることが好ましい。無機繊維の平均繊維径が太すぎると繊維集合体の反発力、靭性が失われ、細すぎると空気中に浮遊する発塵量が多くなり、繊維径３μｍ以下の繊維が含有される確率が高くなる。 The average fiber diameter of the inorganic fibers is preferably 5 to 8 μm. If the average fiber diameter of the inorganic fiber is too thick, the repulsive force and toughness of the fiber assembly will be lost, and if it is too thin, the amount of dust generation floating in the air will increase, and there is a high probability that fibers with a fiber diameter of 3 μm or less will be contained. Become.

＜ニードルブランケットの製造方法＞
　上述の好適な平均繊維径を有し、かつ、繊維径３μｍ以下の繊維を実質的に含まない無機繊維集合体は、ゾル－ゲル法による無機繊維集合体の製造において、紡糸液粘度の制御、紡糸ノズルに用いる空気流の制御、延伸糸の乾燥の制御及びニードリングの制御等により得ることができる。 <Manufacturing method of needle blanket>
The inorganic fiber aggregate having the above-mentioned preferred average fiber diameter and substantially free of fibers having a fiber diameter of 3 μm or less is used to control the spinning solution viscosity in the production of the inorganic fiber aggregate by the sol-gel method. It can be obtained by controlling the air flow used for the spinning nozzle, controlling the drying of the drawn yarn, and controlling the needling.

　ニードルブランケットは、従来公知の方法、例えば特開２０１４－５１７３号公報に記載があるように、ゾル－ゲル法により無機繊維前駆体のマット状集合体を得る工程と、得られた無機繊維前駆体のマット状集合体に、ニードリング処理を施す工程と、ニードリング処理された無機繊維前駆体の集合体を焼成して無機繊維集合体とする焼成工程とを経て製造される。なお、マット状集合体にあっては、無機繊維前駆体が集積過程でマット面方向に配向するので、ニードルブランケットにあっては繊維がブランケットの面方向（マット面方向）に配向する。 The needle blanket includes a step of obtaining a mat-like aggregate of inorganic fiber precursors by a sol-gel method as described in a conventionally known method, for example, JP-A-2014-5173, and the obtained inorganic fiber precursor. This mat-like aggregate is manufactured through a step of needling treatment and a firing step of firing the aggregate of the inorganic fiber precursor subjected to the needling treatment to form an inorganic fiber aggregate. In the mat-like aggregate, the inorganic fiber precursor is oriented in the mat surface direction during the accumulation process. Therefore, in the needle blanket, the fibers are oriented in the blanket surface direction (mat surface direction).

　ニードルブランケットは、従来公知の方法、例えば特開２０１４－５１７３号公報に記載があるように、ゾル－ゲル法により無機繊維前駆体の集合体を得る工程と、得られた無機繊維前駆体の集合体に、ニードリング処理を施す工程と、ニードリング処理された無機繊維前駆体の集合体を焼成して無機繊維集合体とする焼成工程とを経て製造される。 The needle blanket includes a step of obtaining an aggregate of inorganic fiber precursors by a sol-gel method as described in a conventionally known method, for example, JP-A-2014-5173, and an aggregate of the obtained inorganic fiber precursors. It is manufactured through a step of subjecting the body to a needling treatment and a firing step of firing the aggregate of the inorganic fiber precursor subjected to the needling treatment to form an inorganic fiber aggregate.

＜ニードルブランケットのニードル痕密度、嵩密度及び厚さ＞
　ニードルブランケットのニードル痕密度については、２～２００打／ｃｍ^２、特に２～１５０打／ｃｍ^２、とりわけ２～１００打／ｃｍ^２、中でも２～５０打／ｃｍ^２であることが好ましい。このニードル痕密度が低過ぎると、ニードルブランケットの厚みの均一性が低下し、かつ耐熱衝撃性が低下する等の問題があり、高過ぎると、繊維を傷め、焼成後に飛散し易くなるおそれがある。 <Needle mark density, bulk density and thickness of needle blanket>
The needle mark density of the needle blanket is preferably 2 to 200 strokes / cm ² , particularly 2 to 150 strokes / cm ² , particularly 2 to 100 strokes / cm ² , and particularly preferably 2 to 50 strokes / cm ² . If the needle mark density is too low, the uniformity of the needle blanket thickness is lowered and the thermal shock resistance is lowered. If the needle mark density is too high, the fibers may be damaged and scattered after firing. .

　ニードルブランケットの嵩密度は、５０～２００ｋｇ／ｍ^３であることが好ましく、８０～１５０ｋｇ／ｍ^３であることがより好ましい。嵩密度が低すぎると脆弱な無機繊維成形体となり、また、嵩密度が高すぎると無機繊維成形体の質量が増大するとともに反発力が失われ、靭性の低い成形体となる。 The bulk density of the needle blanket is preferably 50 to 200 kg / m ³ , and more preferably 80 to 150 kg / m ³ . If the bulk density is too low, a fragile inorganic fiber molded body is obtained. If the bulk density is too high, the mass of the inorganic fiber molded body increases and the repulsive force is lost, resulting in a molded body having low toughness.

　ニードルブランケットの面密度は、５００～４０００ｇ／ｍ^２、特に６００～３８００ｇ／ｍ^２、とりわけ１０００～２０００ｇ／ｍ^２であることが好ましい。このニードルブランケットの面密度が小さ過ぎると、繊維量が少なく、極薄い成形体しか得られず、断熱用無機繊維成形体としての有用性が低くなり、面密度が大き過ぎると繊維量が多すぎることにより、ニードリング処理による厚み制御が困難となる。 The areal density of the needle blanket, 500 ~ 4000g / ^{m 2,} particularly 600 ~ 3800g / ^{m 2,} it is preferred especially is 1000 ~ 2000g / ^{m 2.} If the surface density of the needle blanket is too small, the amount of fibers is small and only a very thin molded body can be obtained, and the usefulness as an inorganic fiber molded body for heat insulation is reduced. If the surface density is too large, the amount of fibers is too large. This makes it difficult to control the thickness by the needling process.

　ニードルブランケットの厚さは、好ましくは２～３５ｍｍ程度であるが、後述の通り、酸化物前駆体含有液の含浸深さを３ｍｍ以上、好ましくは１０ｍｍ以上確保する観点から、ニードルブランケットの厚さは３ｍｍ以上、特に１０ｍｍ以上であることが好ましい。 The thickness of the needle blanket is preferably about 2 to 35 mm. As will be described later, from the viewpoint of ensuring the impregnation depth of the oxide precursor-containing liquid is 3 mm or more, preferably 10 mm or more, the thickness of the needle blanket is It is preferably 3 mm or more, particularly 10 mm or more.

　なお、本発明において、無機繊維のニードルブランケットは、板状の本発明の無機繊維成形体が製造できるように、板状に成形される。ただし、板状のニードルブランケットは取り扱い時にロール状とされていてもよい。 In the present invention, the inorganic fiber needle blanket is formed into a plate shape so that a plate-shaped inorganic fiber molded body of the present invention can be manufactured. However, the plate-shaped needle blanket may be formed into a roll shape at the time of handling.

［酸化物前駆体含有液］
　上記のニードルブランケットに含浸させる酸化物前駆体含有液は、酸化物前駆体として、焼成により酸化アルミニウム（Ａｌ_２Ｏ_３）及び酸化カルシウム（ＣａＯ）を含むアルミナ・カルシア系組成物を生じさせる成分を含む。このアルミナ・カルシア系組成物にあっては、Ａｌ_２Ｏ_３及びＣａＯは、単体であってもよく、Ａｌ_２Ｏ_３とＣａＯの複酸化物であってもよい。Ａｌ_２Ｏ_３とＣａＯの複酸化物としては、ＣａＯ・Ａｌ_２Ｏ_３、ＣａＯ・２Ａｌ_２Ｏ_３、ＣａＯ・６Ａｌ_２Ｏ_３等が例示されるが、これに限定されない。 [Oxide precursor-containing liquid]
The oxide precursor-containing liquid impregnated in the needle blanket is a component that produces an alumina-calcia composition containing aluminum oxide (Al ₂ O ₃ ) and calcium oxide (CaO) by firing as an oxide precursor. Including. In this alumina-calcia composition, Al ₂ O ₃ and CaO may be a simple substance or a double oxide of Al ₂ O ₃ and CaO. The mixed oxide of Al ₂ O ₃ and _CaO, although _{_{_{CaO · Al 2 O 3, CaO}}} · 2Al 2 O 3, CaO · 6Al 2 O 3 and the like, but is not limited thereto.

　酸化物前駆体含有液のみを乾燥及び焼成した場合の焼成物中の酸化物の存在形態としては、次の（ｉ）～（ｖ）のいずれであってもよい。 The presence form of the oxide in the fired product when only the oxide precursor-containing liquid is dried and fired may be any of the following (i) to (v).

　（ｉ）　Ａｌ_２Ｏ_３単体とＣａＯ単体
　（ｉｉ）　Ａｌ_２Ｏ_３単体とＣａＯ単体と複酸化物
　（ｉｉｉ）　Ａｌ_２Ｏ_３単体と複酸化物
　（ｉｖ）　ＣａＯ単体と複酸化物
　（ｖ）　複酸化物のみ (I) Al ₂ O ₃ simple substance and CaO simple substance (ii) Al ₂ O ₃ simple substance and CaO simple substance and double oxide (iii) Al ₂ O ₃ simple substance and double oxide (iv) CaO simple substance and double oxide (v) Double oxide only

　酸化物前駆体含有液は、少なくともＣａを含有する成分とＡｌを含有する成分を含む。Ｃａを含有する成分としては、具体的には、カルシウムの水酸化物、塩化物、酢酸塩、乳酸塩、硝酸塩、炭酸塩等が挙げられる。これらは１種のみが酸化物前駆体含有液中に含まれていてもよく、２種以上が含まれていてもよい。なかでも、カルシウムの酢酸塩、水酸化物又は炭酸塩であることが、焼成時に発生する成分は主に水と二酸化炭素であり、炉内の金属部材や、鋼板等を劣化させない点で好ましい。 The oxide precursor-containing liquid includes at least a component containing Ca and a component containing Al. Specific examples of the component containing Ca include calcium hydroxide, chloride, acetate, lactate, nitrate, carbonate, and the like. Only 1 type of these may be contained in the oxide precursor containing liquid, and 2 or more types may be contained. Among these, calcium acetate, hydroxide, or carbonate is preferably water and carbon dioxide, and is preferable from the viewpoint of not deteriorating metal members in the furnace, steel plates, and the like.

　Ｃａを含有する成分は、酸化物前駆体含有液中で溶解していても、ゾル状でも、分散状でもよい。Ｃａを含有する成分が酸化物前駆体含有液中で溶解していること又は均一に分散していることにより、酸化物前駆体をニードルブランケットを構成する各無機繊維それぞれの表面全体に均一にコーティングでき、加えて無機繊維内部まで容易に含浸できる点で好ましい。Ｃａを含有する成分が酸化物前駆体含有液中で沈殿する場合は、無機繊維表面に均一にコーティングできず、繊維表面にコーティングできていない部分が生じ、そこからスケールによる浸食が発生するおそれがあるため、耐スケール性向上効果を十分に発揮することができなくなるおそれがある。 The component containing Ca may be dissolved in the oxide precursor-containing liquid, sol form, or dispersed form. The Ca-containing component is dissolved or uniformly dispersed in the oxide precursor-containing liquid, so that the oxide precursor is uniformly coated on the entire surface of each inorganic fiber constituting the needle blanket. In addition, it is preferable in that it can be easily impregnated into the inorganic fiber. When the Ca-containing component precipitates in the oxide precursor-containing liquid, the surface of the inorganic fiber cannot be uniformly coated, and an uncoated portion is formed on the fiber surface, from which there is a risk of erosion due to scale. Therefore, there is a possibility that the effect of improving the scale resistance cannot be sufficiently exhibited.

　Ａｌを含有する成分としては、具体的には、アルミニウムの水酸化物、塩化物、酢酸塩、乳酸化塩、硝酸塩、炭酸塩等が挙げられる。これらは１種のみが酸化物前駆体含有液中に含まれていてもよく、２種以上が含まれていてもよい。なかでも、アルミニウムの酢酸塩、水酸化物又は炭酸塩であることが、焼成時に発生する成分は主に水と二酸化炭素であり、炉内の金属部材や、鋼板等を劣化させない点で好ましい。 Specific examples of the component containing Al include aluminum hydroxide, chloride, acetate, lactate, nitrate, carbonate and the like. Only 1 type of these may be contained in the oxide precursor containing liquid, and 2 or more types may be contained. Especially, it is preferable that it is an acetate, a hydroxide, or carbonate of aluminum that the components which generate | occur | produce at the time of baking are water and a carbon dioxide, and the point which does not deteriorate the metal member, a steel plate, etc. in a furnace.

　Ａｌを含有する成分は、酸化物前駆体含有液中で溶解していても、ゾル状でも、分散状でもよい。Ａｌを含有する成分が酸化物前駆体含有液中で溶解していること又は均一に分散していることにより、酸化物前駆体をニードルブランケットを構成する各無機繊維それぞれの表面全体に均一にコーティングでき、加えて無機繊維内部まで容易に含浸できる点で好ましい。Ａｌを含有する成分が酸化物前駆体含有液中で沈殿する場合は、無機繊維表面に均一にコーティングできず、繊維表面にコーティングできていない部分が生じ、そこからスケールによる浸食が発生するおそれがあるため、耐スケール性向上効果が乏しくなるおそれがある。 The component containing Al may be dissolved in the oxide precursor-containing liquid, sol form, or dispersed form. Since the component containing Al is dissolved or uniformly dispersed in the oxide precursor-containing liquid, the oxide precursor is uniformly coated on the entire surface of each inorganic fiber constituting the needle blanket. In addition, it is preferable in that it can be easily impregnated into the inorganic fiber. When the Al-containing component is precipitated in the oxide precursor-containing liquid, the surface of the inorganic fiber cannot be uniformly coated, and there is a portion that is not coated on the fiber surface, from which there is a risk of erosion due to scale. For this reason, the effect of improving the scale resistance may be poor.

　好ましくは、酢酸を分散剤としたアルミナゾルであり、このものは、焼成時に発生する成分が水と二酸化炭素である点で優れている。同様の理由で乳酸を分散剤としたアルミナゾルも用いることができるが、この場合には断熱保護部材の熱収縮率が、酢酸を分散剤としたアルミナゾルを用いた断熱保護部材と比較して高くなる傾向にある。 Preferably, it is an alumina sol using acetic acid as a dispersant, and this is excellent in that the components generated during firing are water and carbon dioxide. For the same reason, an alumina sol using lactic acid as a dispersant can also be used. In this case, the heat shrinkage rate of the heat insulating protective member is higher than that of the heat insulating protective member using the alumina sol using acetic acid as a dispersing agent. There is a tendency.

　上記のアルミナゾルを用いた場合に使用する焼成によりＣａＯを生成させる成分は、カルシウムの酢酸塩が好ましい。酢酸塩を混合することでアルミナゾルの分散性の低下を抑え、酸化物前駆体含有液の粘度の上昇を抑えることができる。酸化物前駆体含有液の粘度が適正な範囲にあることで、含浸しやすくまた、付着量を制御しやすくなる。酸化物前駆体含有液の粘度が過度に高いと、無機繊維に対して含浸が困難になるおそれがある。 The component that generates CaO by firing used when the above-mentioned alumina sol is used is preferably calcium acetate. By mixing the acetate, it is possible to suppress a decrease in the dispersibility of the alumina sol and to suppress an increase in the viscosity of the oxide precursor-containing liquid. When the viscosity of the oxide precursor-containing liquid is within an appropriate range, it is easy to impregnate and control the amount of adhesion. If the viscosity of the oxide precursor-containing liquid is excessively high, impregnation of inorganic fibers may be difficult.

　酸化物前駆体含有液としては、アルミナゾルが分散した酢酸カルシウム水溶液が好ましい。 As the oxide precursor-containing liquid, an aqueous calcium acetate solution in which alumina sol is dispersed is preferable.

　酸化物前駆体含有液は、上記の焼成によりＡｌ_２Ｏ_３を生じさせる成分と、焼成によりＣａＯを生じさせる成分とを、ＡｌとＣａのモル比率（Ａｌ／Ｃａ）が４以上１００以下となるように含むものが好ましく、より好ましくは６以上３６以下であり、特に好ましくは９以上１３以下である。Ａｌ／Ｃａ比率がこの範囲であると、炉内で加熱されたときに、カルシウム成分が適度に拡散して無機繊維とスケールとが反応するのを抑制することができる。また、耐スケール性の高い酸化カルシウム系の酸化物を生成するため、耐スケール性の向上効果に優れたものとなる。 In the oxide precursor-containing liquid, the molar ratio of Al to Ca (Al / Ca) is 4 or more and 100 or less between the component that generates Al ₂ O ₃ by firing and the component that generates CaO by firing. It is preferable that it is contained, more preferably 6 or more and 36 or less, and particularly preferably 9 or more and 13 or less. When the Al / Ca ratio is within this range, when heated in the furnace, the calcium component can be appropriately diffused and the inorganic fibers and scale can be prevented from reacting. Further, since a calcium oxide-based oxide having high scale resistance is generated, the effect of improving the scale resistance is excellent.

　酸化物前駆体含有液の酸化物前駆体濃度（焼成によりＡｌ_２Ｏ_３を生じさせる成分と焼成によりＣａＯを生じさせる成分の合計の含有量）は、酸化物換算の固形物濃度として、２～３０質量％、特に５～１０質量％が好ましい。酸化物前駆体含有液の酸化物前駆体濃度が低すぎるとニードルブランケットに対する酸化物前駆体成分の付着量（付着量）が低くなるおそれがある。酸化物前駆体含有液の酸化物前駆体濃度が高すぎると、酸化物前駆体含有液の粘性が高くなり、含浸しにくくなるおそれがある。 The oxide precursor concentration of the oxide precursor-containing liquid (the total content of the component that produces Al ₂ O ₃ by firing and the component that produces CaO by firing) is 2 to 30% by mass, especially 5 to 10% by mass is preferred. If the oxide precursor concentration of the oxide precursor-containing liquid is too low, the amount of oxide precursor component attached to the needle blanket (attachment amount) may be low. When the oxide precursor concentration of the oxide precursor-containing liquid is too high, the viscosity of the oxide precursor-containing liquid increases and it may be difficult to impregnate.

　前述の通り、酸化物前駆体含有液は、ゾル又は溶液であることが、ニードルブランケットの各無機繊維それぞれの表面に均一に酸化物前駆体をコーティングできる点で好ましい。 As described above, it is preferable that the oxide precursor-containing liquid is a sol or a solution because the surface of each inorganic fiber of the needle blanket can be uniformly coated with the oxide precursor.

　酸化物前駆体含有液の分散媒体ないしは溶媒としては、水、アルコール等の有機溶媒またはこれらの混合物、好ましくは水が使用される。酸化物前駆体含有液には、ポリビニルアルコール等のポリマー成分が含有されていてもよい。ゾル又は溶液中の化合物の安定性を高めるために、分散安定剤を加えてもよい。分散安定剤としては、例えば、酢酸、乳酸、塩酸、硝酸、硫酸等が挙げられる。 As the dispersion medium or solvent for the oxide precursor-containing liquid, water, an organic solvent such as alcohol, or a mixture thereof, preferably water is used. The oxide precursor-containing liquid may contain a polymer component such as polyvinyl alcohol. A dispersion stabilizer may be added to increase the stability of the compound in the sol or solution. Examples of the dispersion stabilizer include acetic acid, lactic acid, hydrochloric acid, nitric acid, sulfuric acid and the like.

　酸化物前駆体含有液は着色剤が配合されてもよい。酸化物前駆体含有液を着色をすることにより、ニードルブランケットの含浸部と非含浸部の領域を目視にて確認することができる点で好ましい。着色の色は黒色や青色が好ましい。着色剤としては水溶性インクなどを用いることができる。 A coloring agent may be blended in the oxide precursor-containing liquid. Coloring the oxide precursor-containing liquid is preferable in that the region of the needle blanket impregnated portion and the non-impregnated portion can be visually confirmed. The coloring color is preferably black or blue. A water-soluble ink or the like can be used as the colorant.

　酸化物前駆体含有液のニードルブランケットへの好ましい含浸量は後述の通りである。 The preferable amount of impregnation of the oxide precursor-containing liquid into the needle blanket is as described later.

［酸化物前駆体含有液の含浸方法］
　上記のような酸化物前駆体含有液を無機繊維のニードルブランケットに含浸させるには、ニードルブランケットを酸化物前駆体含有液中に浸して、酸化物前駆体含有液をニードルブランケットの無機繊維間に浸透させればよい。 [Impregnation method of oxide precursor-containing liquid]
In order to impregnate the inorganic fiber needle blanket with the oxide precursor-containing liquid as described above, the needle blanket is immersed in the oxide precursor-containing liquid, and the oxide precursor-containing liquid is interposed between the inorganic fibers of the needle blanket. It only has to penetrate.

　このようにして酸化物前駆体含有液をニードルブランケットに含浸させた後、所望の含水量、酸化物前駆体付着量となるように、必要に応じ吸引又は圧縮、遠心脱水などにより余剰な液を脱離させてもよい。吸引により余剰な液を脱離させるには、含浸部に被さるアタッチメントを装着し、該アタッチメントに設けた吸引口から吸引して脱液する方法が好ましい。但し、スプレーで塗布する方法は、表面近傍において無機バインダーの固形分密度が高くなるため、ニードルブランケットの厚み方向において均等に含浸させることができない。また、前駆体液含浸部の水分量が多くなるため、乾燥時にマイグレーションが生じ、無機バインダー固形分が表面に多くなる。ゆえに、焼成すると無機繊維成形体の表面部分にひび割れる、そり及び亀裂が発生する不具合が生じてしまうため、スプレーで塗布する方法は望ましくない。 After impregnating the needle precursor blanket with the oxide precursor-containing liquid in this way, the excess liquid is removed by suction or compression, centrifugal dehydration, etc. as necessary so that the desired water content and oxide precursor adhesion amount are obtained. It may be desorbed. In order to remove excess liquid by suction, it is preferable to attach an attachment that covers the impregnation portion, and to drain the liquid by suction from a suction port provided in the attachment. However, the spray coating method increases the solid density of the inorganic binder in the vicinity of the surface, so that it cannot be impregnated uniformly in the thickness direction of the needle blanket. Moreover, since the moisture content of the precursor liquid impregnated portion increases, migration occurs during drying, and the solid content of the inorganic binder increases on the surface. Therefore, the method of applying by spraying is not desirable because firing causes a problem that warpage and cracking occur in the surface portion of the inorganic fiber molded body.

　このようにして酸化物前駆体含有液を含浸し、必要に応じて余分な液を脱離させた後、更に必要に応じて所定の水分量になるまで乾燥してもよい。こうすることで、高い酸化物前駆体付着量（付着量）を保ったまま、含水量を減らすことができる。水分量を減らすことで、施工時の接着剤との接着性を高めることができる。また、可撓性を保ったまま、無機繊維成形体の質量を軽くすることで、施工が容易になる利点がある。この乾燥条件は、脱離させる水分量に応じて８０～１８０℃で０．５～２４時間の範囲で適宜設定される。 In this way, after impregnating the oxide precursor-containing liquid and removing the excess liquid as necessary, it may be further dried to a predetermined moisture content as necessary. By doing so, the water content can be reduced while maintaining a high oxide precursor adhesion amount (adhesion amount). By reducing the amount of moisture, the adhesiveness with the adhesive during construction can be increased. Moreover, there exists an advantage by which construction becomes easy by reducing the mass of an inorganic fiber molded object, maintaining flexibility. This drying condition is appropriately set in the range of 0.5 to 24 hours at 80 to 180 ° C. according to the amount of water to be desorbed.

　酸化物前駆体含有液の付着量は、後述の通り、好ましくは、酸化物（ＣａＯ及びＡｌ_２Ｏ_３）換算量として、無機繊維１００質量部に対して２～５０質量部である。 As will be described later, the amount of the oxide precursor-containing liquid attached is preferably 2 to 50 parts by mass with respect to 100 parts by mass of the inorganic fiber as an oxide (CaO and Al ₂ O ₃ ) equivalent.

［ニードルブランケットにおける含浸部の位置］
　本発明の断熱保護部材は、上記のようにして、断熱保護部材の少なくとも積層体２と該基材部３の少なくとも一部に、好ましくは積層体２の基材部との結合部を有する端部、その対向端部及び基材部３側に、より好ましくは積層体２及び基材部３全体に酸化物前駆体含有液が含浸され、かつ未乾燥状態となっている含浸部（以下、単に「含浸部」と称す場合がある。）が形成されているものである。 [Position of impregnation part in needle blanket]
As described above, the heat insulating protective member of the present invention has an end having at least a bonded portion between the laminated body 2 and the base material portion of the laminated body 2 at least in the laminated body 2 and the base material portion 3 of the heat insulating protective member. Part, its opposite end and the base part 3 side, more preferably the laminated body 2 and the whole base part 3 are impregnated with the oxide precursor-containing liquid and are in an undried state (hereinafter, It may be simply referred to as “impregnated part”).

　この含浸部は、断熱保護部材が加熱炉内で使用される際に、少なくとも断熱保護部材の炉内露呈面（被加熱面）となる基材部３に形成されることが好ましい。これは未含浸部においてスケールによる浸食が発生するためでる。含浸部は、前記Ｈ方向において積層体２及び基材部３側から高さの１／２以上形成されること、特に断熱保護部材の全体が含浸部であることにより、耐スケール性を高めることができる。 This impregnated portion is preferably formed on the base material portion 3 which becomes at least the exposed surface (heated surface) of the heat insulating protective member when the heat insulating protective member is used in the heating furnace. This is because erosion due to scale occurs in the unimpregnated portion. The impregnated part is formed to be 1/2 or more of the height from the laminate 2 and the base material part 3 side in the H direction, and in particular, the entire heat insulating protective member is the impregnated part, thereby improving the scale resistance. Can do.

［含浸部及び断熱保護部材の水分量］
　本発明の断熱保護部材において、該含浸部の水分量は、当該含浸部の無機繊維１００質量部に対して５０～４００質量部である。含浸部の水分量が過度に少ない場合は、バインダー効果により可撓性がなくなる。また、繊維の発塵も多くなる。逆に含浸部の水分量が過度多い場合は、無機繊維成形体に少しの圧をかけただけで、無機繊維から液が漏れ出る。また、自重によって無機繊維成形体が押し潰され、このために端面の剥離が大きくなるという課題がある。また、含浸部の水分量が多過ぎると、使用時の加熱でマイグレーションと呼ばれる、水の乾燥に伴うゾルの物質移動が激しくおき、乾燥表面近傍での付着量が著しく高くなり、内部の付着量が低下することとなるため、耐熱衝撃性、加熱収縮率が悪化する。つまり含浸部全体の均一性を保つには含浸部の水分量は、４００質量部を超えないことが重要である。好ましくは、該含浸部の水分量は、含浸部の無機繊維１００質量部に対して８０～３５０質量部である。 [Moisture content of impregnated part and heat insulating protective member]
In the heat insulating protective member of the present invention, the water content in the impregnated part is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnated part. When the water content in the impregnated portion is excessively small, flexibility is lost due to the binder effect. In addition, the generation of fiber dust increases. On the contrary, when the water content in the impregnated portion is excessively large, the liquid leaks from the inorganic fiber only by applying a little pressure to the inorganic fiber molded body. Moreover, there exists a subject that an inorganic fiber molded object is crushed by dead weight, and, for this reason, peeling of an end surface becomes large. Also, if the water content in the impregnated part is too large, the mass transfer of the sol accompanying the drying of water, which is called migration due to heating during use, becomes intense, the amount of adhesion in the vicinity of the dry surface becomes extremely high, and the amount of internal adhesion Therefore, the thermal shock resistance and the heat shrinkage rate are deteriorated. That is, in order to maintain the uniformity of the entire impregnated part, it is important that the water content of the impregnated part does not exceed 400 parts by mass. Preferably, the water content in the impregnation part is 80 to 350 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnation part.

　本発明の断熱保護部材全体に含まれる水分量は、断熱保護部材全体の無機繊維１００質量部に対して５０～４００質量部である。断熱保護部材中の水分量が無機繊維１００質量部に対して５０質量部より少ないと、断熱保護部材の未乾燥状態を維持しにくく、また可撓性が低くなり施工時に剥離や割れの問題が生じる。断熱保護部材の水分量が無機繊維１００質量部に対して４００質量部より多いと、断熱保護部材に少しの圧をかけただけで、無機繊維から液が漏れ出る。また、自重によって断熱保護部材が押し潰され、このために端面剥離が大きくなるという課題がある。断熱保護部材全体の水分量は、好ましくは断熱保護部材全体の無機繊維１００質量部に対して１５０～３００質量部である。 The amount of water contained in the entire heat insulating protective member of the present invention is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers in the entire heat insulating protective member. If the moisture content in the heat insulating protective member is less than 50 parts by weight with respect to 100 parts by weight of the inorganic fibers, it is difficult to maintain the undried state of the heat insulating protective member, and the flexibility becomes low, causing problems of peeling and cracking during construction. Arise. When the moisture content of the heat insulating protective member is more than 400 parts by weight with respect to 100 parts by weight of the inorganic fiber, the liquid leaks from the inorganic fiber only by applying a little pressure to the heat insulating protective member. Moreover, the heat insulation protection member is crushed by its own weight, which causes a problem that end face peeling becomes large. The water content of the entire heat insulating protective member is preferably 150 to 300 parts by mass with respect to 100 parts by mass of the inorganic fibers of the entire heat insulating protective member.

　積層体２全体の水分量は、積層体２全体の無機繊維１００質量部に対して、５０～４００質量部、特に１５０～３００質量部であることが好ましい。なかでも、積層体２の基材部との結合部を有する端部とその対向端部において、基材部との結合部を有する端部の水分量が対向端部と比較して高いことが好ましい。 The moisture content of the entire laminate 2 is preferably 50 to 400 parts by mass, particularly 150 to 300 parts by mass with respect to 100 parts by mass of the inorganic fibers of the entire laminate 2. Especially, in the edge part which has a coupling | bond part with the base material part of the laminated body 2, and its opposing edge part, it is that the moisture content of the edge part which has a coupling | bond part with a base material part is high compared with an opposing edge part. preferable.

　基材部との結合部を有する端部における、該端部の無機繊維１００質量部に対する水分量は、耐スケール性向上及び嵩密度向上の観点から、５０～４００質量部であることが好ましく、より好ましくは１００～３５０質量部、特に好ましくは２００～３００質量部である。測定方法としては、基材部との結合部を有する端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、当該試験片の無機繊維１００質量部に対する水分量を測定する。 The amount of water with respect to 100 parts by mass of the inorganic fiber at the end part having the joint part with the base material part is preferably 50 to 400 parts by mass from the viewpoint of improving the scale resistance and the bulk density, More preferred is 100 to 350 parts by mass, and particularly preferred is 200 to 300 parts by mass. As a measuring method, an end test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) having a joint with the base material is collected, and the moisture content of the test piece with respect to 100 parts by mass of the inorganic fiber. Measure.

　対向端部における、該端部の無機繊維１００質量部に対する水分量は、耐スケール性向上及び嵩密度向上の観点から、５０～４００質量部であることが好ましく、より好ましくは７５～３００質量部、特に好ましくは１００～２００質量部である。測定方法としては、対向端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、試験片の無機繊維１００質量部に対する水分量を測定する。 The amount of water in the opposite end with respect to 100 parts by mass of the inorganic fibers is preferably 50 to 400 parts by mass, more preferably 75 to 300 parts by mass, from the viewpoint of improving scale resistance and bulk density. Particularly preferred is 100 to 200 parts by mass. As a measuring method, a test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) at the opposite end is sampled, and the moisture content with respect to 100 parts by mass of the inorganic fiber of the test piece is measured.

　基材部３全体の水分量は、基材部３全体の無機繊維１００質量部に対して、５０～４００質量部、特に１５０～３００質量部であることが好ましい。 The water content of the whole base material part 3 is preferably 50 to 400 parts by weight, particularly 150 to 300 parts by weight with respect to 100 parts by weight of the inorganic fibers of the whole base material part 3.

［焼成後における酸化物の付着量］
　酸化物前駆体含有液は、含浸部において、焼成後の酸化物（ＣａＯ及びＡｌ_２Ｏ_３）付着量（以下、単に「酸化物付着量」と称す場合がある。）が含浸部の無機繊維１００質量部に対して２～５０質量部となるように断熱保護部材のニードルブランケットに含浸される。この酸化物付着量は、含浸部の無機繊維１００質量部に対して好ましくは５～３０質量部、最も好ましくは１０～２５質量部である。酸化物付着量が少ない場合は、所望の耐スケール性が得られない場合がある。逆に多すぎると、含浸部の密度が高くなり、熱収縮率の悪化や耐熱衝撃性、耐機械衝撃性の低下が見られる。また、カルシウム成分が繊維表面に多量に存在する場合は、カルシウム成分と無機繊維で、低融点成分を多量に生成するため、含浸部の耐熱性が低下する。 [Amount of oxide deposited after firing]
In the impregnated part, the oxide precursor-containing liquid has an amount of deposited oxide (CaO and Al ₂ O ₃ ) after firing (hereinafter, sometimes simply referred to as “amount of deposited oxide”) of the impregnated part. The needle blanket of the heat insulating protection member is impregnated so as to be 2 to 50 parts by mass with respect to 100 parts by mass. The oxide adhesion amount is preferably 5 to 30 parts by mass, and most preferably 10 to 25 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnated part. When the oxide adhesion amount is small, the desired scale resistance may not be obtained. On the other hand, when the amount is too large, the density of the impregnated portion increases, and deterioration of the thermal shrinkage rate, thermal shock resistance and mechanical shock resistance are observed. Further, when the calcium component is present in a large amount on the fiber surface, the calcium component and the inorganic fiber produce a large amount of a low melting point component, so that the heat resistance of the impregnated portion is lowered.

　断熱保護部材全体の酸化物付着量は、含浸部の酸化物付着量と同様な理由から、断熱保護部材全体の無機繊維１００質量部に対して、５～４０質量部、特に８～３０質量部であることが好ましい。 For the same reason as the oxide adhesion amount of the impregnation part, the oxide adhesion amount of the entire heat insulation protection member is 5 to 40 parts by mass, particularly 8 to 30 parts by mass with respect to 100 parts by mass of the inorganic fibers of the whole heat insulation protection member. It is preferable that

　積層体２全体の酸化物付着量は、含浸部の酸化物付着量と同様な理由から、積層体２全体の無機繊維１００質量部に対して、５～４０質量部、特に８～３０質量部であることが好ましい。なかでも、積層体２の基材部との結合部を有する端部とその対向端部において、基材部との結合部を有する端部の酸化物前駆体含有液量が対向端部と比較して高いことが好ましい。 For the same reason as the oxide adhesion amount of the impregnation part, the oxide adhesion amount of the entire laminate 2 is 5 to 40 parts by mass, particularly 8 to 30 parts by mass with respect to 100 parts by mass of the inorganic fibers of the entire laminate 2. It is preferable that Especially, the oxide precursor containing liquid amount of the edge part which has the coupling | bond part with the base material part of the laminated body 2 and its opposing edge part is compared with the opposing edge part. Therefore, it is preferable that it is high.

　基材部との結合部を有する端部においては、酸化物前駆体含有液が酸化物付着量として該端部の無機繊維１００質量部に対して、耐スケール性向上及び嵩密度向上の観点から、８～５０質量部であることが好ましく、より好ましくは１５～４０質量部、特に好ましくは２５～３５質量部である。測定方法としては、基材部との結合部を有する端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、試験片の無機繊維１００質量部に対する酸化物前駆体含有液量（酸化物付着量換算）として測定する。 In the end portion having the joint portion with the base material portion, the oxide precursor-containing liquid as an oxide adhesion amount with respect to 100 parts by mass of the inorganic fiber at the end portion from the viewpoint of improving the scale resistance and the bulk density. The amount is preferably 8 to 50 parts by mass, more preferably 15 to 40 parts by mass, and particularly preferably 25 to 35 parts by mass. As a measuring method, an end test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) having a joint portion with the base material portion is collected, and an oxide precursor with respect to 100 parts by mass of the inorganic fiber of the test piece. Measured as the amount of body-containing liquid (in terms of oxide adhesion).

　対向端部においては、酸化物前駆体含有液が酸化物付着量として該対向端部の無機繊維１００質量部に対して、スキッドポスト又はスキッドビーム等の施工対象物の曲率が高い場合の施工性向上及び施工対象物の表面に付着しているスケールへの耐スケール性付与の観点から、８～５０質量部であることが好ましく、より好ましくは１２～４０質量部、特に好ましくは１５～３０質量部である。測定方法としては、対向端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、試験片の無機繊維１００質量部に対する酸化物前駆体含有液量（酸化物付着量換算）として測定する。 At the opposite end, the workability when the oxide precursor containing liquid has a high curvature of an object to be constructed such as a skid post or a skid beam with respect to 100 parts by mass of the inorganic fiber at the opposite end as an oxide adhesion amount. From the viewpoint of improvement and imparting scale resistance to the scale attached to the surface of the construction object, the amount is preferably 8 to 50 parts by mass, more preferably 12 to 40 parts by mass, and particularly preferably 15 to 30 parts by mass. Part. As a measurement method, a test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) at the opposite end is collected, and the amount of oxide precursor containing liquid (oxide adhesion) with respect to 100 parts by mass of the inorganic fiber of the test piece. Measured as a quantity).

　基材部３全体の酸化物付着量は、含浸部の酸化物付着量と同様な理由から、断熱保護部材全体の無機繊維１００質量部に対して、５～４０質量部、特に８～３０質量部であることが好ましい。 For the same reason as the amount of oxide attached to the impregnated portion, the amount of oxide attached to the entire base portion 3 is 5 to 40 parts by weight, particularly 8 to 30 parts by weight, based on 100 parts by weight of the inorganic fibers of the entire heat insulating protective member. Part.

　本発明の断熱保護部材の含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）は、１０～３３０であり、好ましくは３０～１００であり、特に好ましくは３２～７０である。 The molar ratio of Al to Ca (Al / Ca) in the entire impregnated portion of the heat insulating protective member of the present invention is 10 to 330, preferably 30 to 100, particularly preferably 32 to 70.

　含浸部全体とは、含浸部を構成する無機繊維と付着物との全体を表わす。含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）とは、無機繊維成形体の含浸部に存在するニードルブランケットを構成する無機繊維に含まれるＡｌのモル量と酸化物前駆体含有液に由来するＡｌのモル量の和に対する無機繊維に含まれるＣａのモル量と酸化物前駆体含有液に由来するＣａのモル量の和の比である。施工前の断熱保護部材と、施工後、加熱により焼成された断熱保護部材とにおいて、ＡｌとＣａのモル比率（Ａｌ／Ｃａ）は実質的に等しい。 The whole impregnation part represents the whole of inorganic fibers and deposits constituting the impregnation part. The molar ratio of Al to Ca (Al / Ca) in the entire impregnated part is based on the molar amount of Al contained in the inorganic fibers constituting the needle blanket present in the impregnated part of the inorganic fiber molded body and the oxide precursor containing liquid. It is a ratio of the sum of the molar amount of Ca contained in the inorganic fiber to the sum of the molar amount of Al derived from the sum of the molar amount of Ca derived from the oxide precursor-containing liquid. The molar ratio (Al / Ca) of Al and Ca is substantially equal between the heat insulation protective member before construction and the heat insulation protective member fired by heating after construction.

　本発明の断熱保護部材の含浸部全体のＡｌ：Ｓｉ：Ｃａモル比は、７７．２～７９．５：１８．９～２１．６：０．９～２．２であることが、耐スケール性、耐熱性及び耐熱衝撃性の観点から好ましい。ここで、含浸部全体のＡｌのモル量及びＣａのモル量は、上記の通り、含浸部に存在するニードルブランケットを構成する無機繊維に含まれるＡｌ及びＣａの各モル量と酸化物前駆体含有液に由来するＡｌ及びＣａの各モル量との合計である。Ｓｉのモル量はニードルブランケットを構成する無機繊維に含まれるＳｉのモル量である。 The Al: Si: Ca molar ratio of the entire impregnated portion of the heat insulating protective member of the present invention is 77.2 to 79.5: 18.9 to 21.6: 0.9 to 2.2. From the viewpoint of heat resistance, heat resistance and thermal shock resistance. Here, the molar amount of Al and the molar amount of Ca in the entire impregnated portion are, as described above, each of the molar amounts of Al and Ca contained in the inorganic fibers constituting the needle blanket present in the impregnated portion and the oxide precursor content. It is the sum of the molar amounts of Al and Ca derived from the liquid. The molar amount of Si is the molar amount of Si contained in the inorganic fibers constituting the needle blanket.

　含浸部におけるＡｌ量、Ｃａ量及びＳｉ量は蛍光Ｘ線分析によって測定することができる。 The amount of Al, the amount of Ca and the amount of Si in the impregnated part can be measured by fluorescent X-ray analysis.

　積層体２全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）は、含浸部全体のＡｌとＣａのモル比率（Ａｌ／Ｃａ）と同様な理由から、通常１０～３３０であり、好ましくは３０～１００であり、特に好ましくは３２～７０である。 The molar ratio of Al to Ca (Al / Ca) in the entire laminate 2 is usually 10 to 330, preferably 30 to 30 for the same reason as the molar ratio of Al to Ca in the entire impregnation part (Al / Ca). 100, particularly preferably 32 to 70.

　基材部との結合部を有する端部におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）は、含浸部全体のＡｌとＣａのモル比率（Ａｌ／Ｃａ）と同様な理由から、通常１０～３３０であり、好ましくは３０～１００であり、特に好ましくは３２～７０である。測定方法としては、基材部との結合部を有する端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、当該試験片の含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）を、ニードルブランケットを構成する無機繊維に含まれるＡｌのモル量と酸化物前駆体含有液に由来するＡｌのモル量の和に対する無機繊維に含まれるＣａのモル量と酸化物前駆体含有液に由来するＣａのモル量の和の比を用いて算出する。 The molar ratio of Al to Ca (Al / Ca) at the end having the joint with the base material is usually 10 to 330 for the same reason as the molar ratio of Al to Ca in the entire impregnation part (Al / Ca). And preferably 30 to 100, particularly preferably 32 to 70. As a measurement method, an end test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) having a joint portion with the base material portion is collected, and Al and Ca in the entire impregnation portion of the test piece are collected. The molar ratio (Al / Ca) is the molar amount of Ca contained in the inorganic fiber relative to the sum of the molar amount of Al contained in the inorganic fiber constituting the needle blanket and the molar amount of Al derived from the oxide precursor-containing liquid. It calculates using the ratio of the sum of the molar amount of Ca originating in an oxide precursor containing liquid.

　対向端部におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）は、含浸部全体のＡｌとＣａのモル比率（Ａｌ／Ｃａ）と同様な理由から、通常１０～３３０であり、好ましくは３０～１００であり、特に好ましくは３２～７０である。測定方法としては、基材部との結合部を有する端部の試験片（例えば、幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍ）を採取し、当該試験片の含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）を、ニードルブランケットを構成する無機繊維に含まれるＡｌのモル量と酸化物前駆体含有液に由来するＡｌのモル量の和に対する無機繊維に含まれるＣａのモル量と酸化物前駆体含有液に由来するＣａのモル量の和の比を用いて算出する。 The molar ratio of Al to Ca (Al / Ca) at the opposite end is usually 10 to 330, preferably 30 to 100, for the same reason as the Al to Ca molar ratio (Al / Ca) of the entire impregnated part. Particularly preferred is 32-70. As a measurement method, an end test piece (for example, width 12.5 mm × depth 60 mm × height 10 mm) having a joint portion with the base material portion is collected, and Al and Ca in the entire impregnation portion of the test piece are collected. The molar ratio (Al / Ca) is the molar amount of Ca contained in the inorganic fiber relative to the sum of the molar amount of Al contained in the inorganic fiber constituting the needle blanket and the molar amount of Al derived from the oxide precursor-containing liquid. It calculates using the ratio of the sum of the molar amount of Ca originating in an oxide precursor containing liquid.

　基材部３全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）は、含浸部全体のＡｌとＣａのモル比率（Ａｌ／Ｃａ）と同様な理由から、通常１０～３３０であり、好ましくは３０～１００であり、特に好ましくは３５～８０である。 The molar ratio of Al to Ca (Al / Ca) in the whole base material part 3 is usually 10 to 330, preferably 30 for the same reason as the molar ratio of Al to Ca in the whole impregnation part (Al / Ca). -100, particularly preferably 35-80.

［ＣａＯの作用］
　含浸部を有する本発明の断熱保護部材が炉内で加熱され、酸化物前駆体含有液が高温で焼成された場合、酸化物前駆体含有液から生成したＣａＯ成分の一部が無機繊維内部に拡散する。含浸部全体におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）が上記範囲にあることで、高温まで焼成した時に、無機繊維内部に適量のＣａＯが拡散する。無機繊維内部に適量のＣａＯが存在することで、無機繊維中にＦｅＯが拡散しにくくなる。つまり無機繊維とＦｅＯとの反応が抑制される。このため、断熱保護部材の耐スケールが向上する。含浸部におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）が１０より少ない場合は、無機繊維とその内部に拡散したＣａＯにより、無機繊維との低融点化合物を大量に生成するため、耐熱性、耐熱衝撃性が低下するおそれがある。また、含浸部におけるＡｌとＣａのモル比率（Ａｌ／Ｃａ）が３３０より多い場合は、ＣａＯの拡散が不十分で、耐スケールが向上しないおそれがある。特にムライト（３Ａｌ_２Ｏ_３・２ＳｉＯ_２）組成の無機繊維を用いた場合は、高温で焼成されると、ムライトの結晶相と、ムライト成分にＣａＯが拡散した結晶相が生成する。この場合、耐熱衝撃性、耐熱性、耐機械衝撃性に優れるムライト結晶相を残したまま、ＣａＯが繊維内部に拡散しているため、耐ＦｅＯ性が向上すると考えられる。 [Action of CaO]
When the heat-insulating protective member of the present invention having an impregnated part is heated in a furnace and the oxide precursor-containing liquid is baked at a high temperature, a part of the CaO component generated from the oxide precursor-containing liquid is inside the inorganic fiber. Spread. When the molar ratio of Al to Ca (Al / Ca) in the entire impregnated portion is in the above range, an appropriate amount of CaO diffuses into the inorganic fiber when fired to a high temperature. The presence of an appropriate amount of CaO inside the inorganic fiber makes it difficult for FeO to diffuse into the inorganic fiber. That is, the reaction between inorganic fibers and FeO is suppressed. For this reason, the scale resistance of a heat insulation protection member improves. When the molar ratio of Al to Ca (Al / Ca) in the impregnated part is less than 10, since a large amount of low melting point compound with the inorganic fiber is generated by the inorganic fiber and CaO diffused therein, the heat resistance and heat resistance There is a risk that impact properties will be reduced. Moreover, when the molar ratio of Al to Ca (Al / Ca) in the impregnation part is more than 330, the diffusion of CaO is insufficient and the scale resistance may not be improved. Particularly in the case of using mullite _{_{_{(3Al 2 O 3 · 2SiO 2}}} ) composition of the inorganic fibers, when fired at a high temperature, and the crystal phase of mullite, the crystal phase of CaO diffused into mullite component generates. In this case, it is considered that FeO resistance is improved because CaO diffuses inside the fiber while leaving a mullite crystal phase excellent in thermal shock resistance, heat resistance, and mechanical shock resistance.

　このことは、当該無機繊維成形体を１４００℃、８時間で焼成した後に、Ｘ線回折法（ＸＲＤ）にて検出されるピークとして、ムライト結晶相を示すピークとＣａＯ－Ａｌ_２Ｏ_３－ＳｉＯ_２系結晶相を示すピークが存在することで確認することができる。 This is because, after firing the inorganic fiber molded body at 1400 ° C. for 8 hours, as a peak detected by X-ray diffraction (XRD), a peak showing a mullite crystal phase and a CaO—Al ₂ O ₃ —SiO ₂ _This can be confirmed by the presence of a peak indicating a _two- system crystal phase.

　Ｃａ成分が繊維内部まで拡散していることは、電子線マイクロアナライザー（ＥＰＭＡ）を用いた元素マッピングにより確認することができる。 It can be confirmed by element mapping using an electron beam microanalyzer (EPMA) that the Ca component has diffused into the fiber.

［断熱保護部材の運搬、施工］
　本発明の断熱保護部材は、乾燥による水分量の減少を防ぐため、真空梱包やシュリンク梱包などで梱包して保管、輸送されることが好ましい。 [Transportation and construction of insulation protection members]
In order to prevent the moisture content from being reduced due to drying, the heat insulating protective member of the present invention is preferably packed and stored and transported by vacuum packing or shrink packing.

　以下に、実施例により本発明の実施形態を説明するが、本発明はその要旨を超えない限り、これらに限定されるものではない。なお、本実施例に記載の項目は以下の方法によって測定した。 Hereinafter, embodiments of the present invention will be described by way of examples. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded. The items described in the examples were measured by the following methods.

　積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部を、それぞれ積層体下部及び積層体上部とする記す場合がある。 The end portion having the joint portion between the base material portion of the laminate and the base material portion in the vertical direction and the opposite end portion thereof may be referred to as the lower portion of the laminate and the upper portion of the laminate, respectively.

［水分量］
断熱保護部材含浸部の水分率は、断熱保護部材を１５０℃で１２時間乾燥し、乾燥前の断熱保護部材の質量Ｗ_１と乾燥後の断熱保護部材の質量Ｗ_２との差（Ｗ_１－Ｗ_２）から水分量を求め、無機繊維１００質量部に対する水分の質量比として算出した。 [amount of water]
The moisture content of the heat-insulating protective member-impregnated portion is obtained by drying the heat-insulating protective member at 150 ° C. for 12 hours, and the difference between the mass W ₁ of the heat-insulating protective member before drying and the mass W ₂ of the heat-insulating protective member after drying (W ₁ − The water content was determined from (W ₂ ) and calculated as a mass ratio of water to 100 parts by mass of the inorganic fibers.

　測定に使用した試料は、積層体上部及び積層体下部については幅１２．５ｍｍ×奥行き６０ｍｍ×高さ１０ｍｍにカットした試験片を、基材部については幅１０ｍｍ×奥行き６０ｍｍ×高さ１２．５ｍｍにカットした試験片を用いた。 The sample used for the measurement was a test piece cut into a width 12.5 mm × depth 60 mm × height 10 mm for the upper part of the laminate and the lower part of the laminate, and a width 10 mm × depth 60 mm × height 12.5 mm for the base part. The test piece cut into pieces was used.

［酸化物付着量］
　断熱保護部材含浸部の酸化物付着率は、断熱保護部材を１２００℃で８時間焼成した後、断熱保護部材の質量を測定し、断熱保護部材中の無機繊維のニードルブランケットの質量を差し引いて酸化物付着量を求め、断熱保護部材中の無機繊維１００質量部に対する酸化物付着量の質量比として算出した。 [Oxide adhesion amount]
The oxide adhesion rate of the heat insulating protective member impregnated portion is oxidized by baking the heat insulating protective member at 1200 ° C. for 8 hours, measuring the mass of the heat insulating protective member, and subtracting the mass of the needle blanket of inorganic fibers in the heat insulating protective member. The object adhesion amount was calculated and calculated as a mass ratio of the oxide adhesion amount to 100 parts by mass of the inorganic fibers in the heat insulating protective member.

［脱落確認試験］
　断熱保護部材に３ｍｍ厚程度モルタルを塗り、直径３４０ｍｍ、高さ８００ｍｍの不定形耐火物の筒に施工し、昇温時間５℃／分、１４００℃、８時間の条件で焼成し、脱落するかしないかを試験した。
＜評価基準＞
　○：脱落せず、隙間もなかった
　×：脱落した [Dropping confirmation test]
Do you apply mortar about 3mm thick to the insulation protection member, apply it to a tube of irregular refractory with a diameter of 340mm and a height of 800mm, and fire it under conditions of 5 ° C / min, 1400 ° C, 8 hours? It was tested for it.
<Evaluation criteria>
○: No dropout, no gap ×: Dropped

［耐スケール性試験］
　断熱保護部材を１５０℃で１２時間乾燥し、Ｒ＝３４（弦長＝１４５ｍｍ、矢向＝４０ｍｍ）の不定形耐火物にモルタルを３ｍｍ厚程度塗り、積層体の対向端部側を接着した。基材部の上に、５ｍｍ角で厚さ１ｍｍの鉄ペレットを載せた状態で電気炉に入れ、１４００℃まで５時間で昇温し、この温度に５時間保持した後、降温後取り出して、酸化鉄による深さ方向の浸食度合いから下記基準で評価した。
＜評価基準＞
　　○：浸食深さが０ｍｍを超え１０ｍｍ以下
　　×：浸食深さが１０ｍｍを超える [Scale resistance test]
The heat insulating protective member was dried at 150 ° C. for 12 hours, mortar was applied to an irregular refractory having R = 34 (string length = 145 mm, arrow direction = 40 mm) to a thickness of about 3 mm, and the opposite end portions of the laminate were bonded. Put the iron pellet of 5 mm square and 1 mm thickness on the base material, put it in an electric furnace, raise the temperature to 1400 ° C. in 5 hours, hold at this temperature for 5 hours, take out after cooling down, The evaluation was made according to the following criteria from the degree of erosion by iron oxide in the depth direction.
<Evaluation criteria>
○: Erosion depth exceeds 0 mm and 10 mm or less ×: Erosion depth exceeds 10 mm

［外観観察］
断熱保護部材を１５０℃で１２時間乾燥し、３ｍｍ厚程度モルタルを塗り、直径３４０ｍｍ、高さ８００ｍｍの不定形耐火物の筒に施工し、昇温時間５℃／分、１４００℃、８時間の条件で焼成した後の不定形耐火物と断熱保護部材との隙間を観察した。
＜評価基準＞
　○：隙間なし
　△：隙間がごくわずか存在する
　×：隙間が無数に存在する [Appearance observation]
The insulation protection member is dried at 150 ° C. for 12 hours, coated with a mortar of about 3 mm thickness, applied to a tube of an irregular refractory having a diameter of 340 mm and a height of 800 mm, and the temperature rising time is 5 ° C./min, 1400 ° C., 8 hours. The clearance gap between the amorphous refractory and the heat insulation protective member after baking on conditions was observed.
<Evaluation criteria>
○: No gap Δ: Very little gap ×: Innumerable gap

［実施例１］
　平均繊維径が５．５μｍであり、実質的に繊維径３μｍ以下の繊維を含まない、アルミナ７２質量％とシリカ２８質量％とを含む多結晶質アルミナ／シリカ系繊維を集積してニードリングしてなるニードルブランケット（三菱ケミカル株式会社製　商品名　ＭＡＦＴＥＣ^ＴＭ　ＭＬＳ、厚さ１２．５ｍｍ、ニードル痕密度５打／ｃｍ^２、嵩密度１２８ｋｇ／ｍ^３、面密度１６００ｇ／ｍ^２）を奥行き６００ｍｍ×幅１８００ｍｍに加工したものを基材部とした。前記ニードルブランケットを奥行き６００ｍｍ×幅１００ｍｍに加工したものを２つ折りにし、谷部分を基材部にアルミナ糸で縫合し、無機繊維成形体を得た。（Ｈ＝５０ｍｍ） [Example 1]
A polycrystalline alumina / silica fiber containing 72% by mass of alumina and 28% by mass of silica, which has an average fiber diameter of 5.5 μm and does not substantially contain fibers having a fiber diameter of 3 μm or less, is accumulated and needsling. Needle blanket (trade name MAFTEC ^™ MLS, manufactured by Mitsubishi Chemical Corporation, thickness 12.5 mm, needle mark density 5 strokes / cm ² , bulk density 128 kg / m ³ , surface density 1600 g / m ² ), depth 600 mm × width What was processed into 1800 mm was made into the base-material part. The needle blanket processed to a depth of 600 mm and a width of 100 mm was folded in half, and the valley portion was sewn to the base material portion with an alumina thread to obtain an inorganic fiber molded body. (H = 50mm)

　酸化物前駆体含有液として、酢酸を分散剤としたアルミナゾル溶液に、酢酸カルシウム一水和物をＡｌとＣａのモル比率（Ａｌ／Ｃａ）が１２になるように添加し、酸化物換算の固形分濃度を７．０質量％に調整した液を作製した。この液を無機繊維成形体全体に含浸させた後、基材部側を吸引口に接地させ吸引力８．０ｍ^３／ｍｉｎで吸引し、１００℃、３時間乾燥し、断熱保護部材を得た。 As an oxide precursor-containing liquid, calcium acetate monohydrate is added to an alumina sol solution containing acetic acid as a dispersant so that the molar ratio of Al to Ca (Al / Ca) is 12, and the solid in terms of oxide is added. A liquid having a partial concentration adjusted to 7.0% by mass was prepared. After this liquid was impregnated into the entire inorganic fiber molded body, the base material side was grounded to the suction port, sucked at a suction force of 8.0 m ³ / min, and dried at 100 ° C. for 3 hours to obtain a heat insulating protective member. .

　得られた断熱保護部材の積層体上部、積層体下部、基材部及び全体の水分量、酸化物付着量、含浸部のＡｌとＣａのモル比率（Ａｌ／Ｃａ）及び嵩密度の測定結果を表１に示す。また、直径３４０ｍｍ、高さ８００ｍｍの不定形耐火物の筒に施工した際の断熱保護部材各部位の圧縮率と圧縮時における無機繊維の嵩密度及び焼成後における嵩密度を、並びに、施工された断熱保護部材の脱落確認試験、耐スケール性試験及び外観検査を上述の方法で評価した結果を表２に示す。 Measurement results of laminated body upper part, laminated body lower part, base material part and total moisture content, oxide adhesion amount, impregnated Al / Ca molar ratio (Al / Ca) and bulk density of the obtained heat insulation protective member Table 1 shows. In addition, the compression ratio of each part of the heat-insulating protective member when applied to an irregular refractory cylinder having a diameter of 340 mm and a height of 800 mm, the bulk density of the inorganic fiber during compression, and the bulk density after firing were applied. Table 2 shows the results of evaluating the drop-off confirmation test, the scale resistance test, and the appearance inspection of the heat insulation protective member by the above-described methods.

［実施例２］
　実施例１と同様の形状に加工をした後、積層体の対向端部側を吸引口に接地させたこと以外は同様にして断熱保護部材を作製し、実施例１同様の評価を行った。結果を表１及び表２に示す。 [Example 2]
After processing into the same shape as Example 1, the heat insulation protection member was produced similarly except having made the opposing edge part side of a laminated body contact the suction port, and evaluation similar to Example 1 was performed. The results are shown in Tables 1 and 2.

［比較例１］
　実施例１と同様の形状に加工をした後、前駆体液を含浸以降の工程しないこと以外は同様にして断熱保護部材を作製し、実施例１同様の評価を行った。結果を表１及び表２に示す。 [Comparative Example 1]
After processing into the same shape as Example 1, the heat insulation protection member was produced similarly except not performing the process after impregnation with a precursor liquid, and evaluation similar to Example 1 was performed. The results are shown in Tables 1 and 2.

［考察］
　表１及び表２に記載の結果より、本願の断熱保護部材である実施例１及び実施例２は、比較例１と比較して、脱落確認試験、耐スケール性試験及び外観検査について良好であった。一方、比較例１は酸化物前駆体含有液を含浸させていないため、断熱保護部材がスケールに浸食されてしまい、耐スケール試験及び外観観察が不良であった。 [Discussion]
From the results shown in Tables 1 and 2, Example 1 and Example 2 which are heat insulation and protection members of the present application were better than the Comparative Example 1 in terms of the dropout confirmation test, the scale resistance test, and the appearance inspection. It was. On the other hand, since Comparative Example 1 was not impregnated with the oxide precursor-containing liquid, the heat insulating protective member was eroded by the scale, and the scale resistance test and appearance observation were poor.

　実施例１と実施例２を比較すると、実施例１は酸化物前駆体含有液を、基材部側に吸引口を接地させて脱液しているため、施工面（積層体上部）の水分と付着量が少なく、構成材料であるニードルブランケットが有する柔軟性と反発力を維持できるため優れている。また、曝露面となる基材部、積層体下部に酸化物前駆体含有液を比較的多く付着できるため、より高い耐スケール性を付与できるため優れている。これに対して、実施例２は積層体の対向端部側に吸引口を接地させて脱液しているため、基材部の酸化物前駆体含有液の付着量が相対的に少なく、脱落はしないものの、一部分隙間が空いていることが観察された。 Comparing Example 1 and Example 2, in Example 1, the oxide precursor-containing liquid was drained by grounding the suction port on the base material side, so that the moisture on the construction surface (upper part of the laminate) The amount of adhesion is small, and the flexibility and repulsive force of the needle blanket that is a constituent material can be maintained, which is excellent. Moreover, since a comparatively much oxide precursor containing liquid can adhere to the base-material part used as an exposed surface, and a laminated body lower part, since higher scale resistance can be provided, it is excellent. On the other hand, in Example 2, since the suction port was grounded on the opposite end side of the laminate to drain the liquid, the attached amount of the oxide precursor-containing liquid in the base material portion was relatively small, and the drop off occurred. Although not, it was observed that some gaps were left.

　本発明を特定の態様を用いて詳細に説明したが、本発明の意図と範囲を離れることなく様々な変更が可能であることは当業者に明らかである。
　本出願は、２０１６年５月１３日付で出願された日本特許出願２０１６－０９７２３０に基づいており、その全体が引用により援用される。 Although the present invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the invention.
This application is based on Japanese Patent Application No. 2016-097230 filed on May 13, 2016, which is incorporated by reference in its entirety.

　１，１Ａ～１Ｃ　断熱保護部材
　２，２Ａ～２Ｃ　積層体
　３　基材部
　４　縫糸
　５　ニードルブランケット
　７　凹所
　１０　施工対象物
　１１　接着剤層
　２１　スキッドポスト
　２２　スキッドビーム DESCRIPTION OF

SYMBOLS

1,1A-1C Thermal

insulation protection member

2,2A-2C Laminated body 3 Base material part 4 Sewing thread 5 Needle blanket 7 Recess 10 Construction object 11 Adhesive layer 21 Skid post 22 Skid beam

Claims

　アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、
　該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有する断熱保護部材であって、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化物前駆体含有液が未乾燥状態で付着している含浸部が設けられており、
　該含浸部の水分量が、該含浸部の無機繊維１００質量部に対して５０～４００質量部であり、
　該断熱保護部材全体の水分量が断熱保護部材全体の無機繊維１００質量部に対して５０～４００質量部であり、
　前記酸化物前駆体含有液は、焼成により酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を生じさせる成分を含有しており、
　前記含浸部においては、酸化物前駆体含有液が酸化物換算量として該含浸部の無機繊維１００質量部に対して２～５０質量部となるように付着している断熱保護部材。 A laminate in which a folded back of an alumina fiber needle blanket is laminated;
A heat-insulating protective member having a base material portion made of an alumina fiber needle blanket attached to one surface of the laminate on the folded portion side of the needle blanket,
The folded portion of the needle blanket and the base material portion are combined,
At least a part of the laminate and the base material portion is provided with an impregnation portion where the oxide precursor-containing liquid is attached in an undried state,
The amount of water in the impregnated part is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnated part,
The moisture content of the whole heat insulating protective member is 50 to 400 parts by mass with respect to 100 parts by mass of the inorganic fibers of the whole heat insulating protective member,
The oxide precursor-containing liquid contains a component that produces an alumina-calcia composition containing aluminum oxide and calcium oxide by firing,
In the impregnation part, an insulating protection member in which the oxide precursor-containing liquid is attached in an amount of 2 to 50 parts by mass with respect to 100 parts by mass of the inorganic fibers in the impregnation part as an oxide equivalent amount.
　前記含浸部におけるＡｌとＣａのモル比（Ａｌ／Ｃａ）が１０～３３０である、請求項１に記載の断熱保護部材。 The heat insulating protective member according to claim 1, wherein a molar ratio of Al to Ca (Al / Ca) in the impregnated portion is 10 to 330.
　前記積層体の高さＨが３０～１５０ｍｍである、請求項１又は２に記載の断熱保護部材。 The heat insulating protective member according to claim 1 or 2, wherein a height H of the laminate is 30 to 150 mm.
　前記積層体の嵩密度が０．１０～０．７５ｇ／ｃｍ^３である、請求項１～３のいずれか１項に記載の断熱保護部材。 The heat insulating protective member according to any one of claims 1 to 3, wherein a bulk density of the laminate is 0.10 to 0.75 g / cm ³ .
　前記積層体と基材部とはアルミナ質の糸によって縫着されて接合されている、請求項１～４のいずれか１項に記載の断熱保護部材。 The heat insulating protective member according to any one of claims 1 to 4, wherein the laminate and the base material portion are sewn and joined with an alumina-based thread.
前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の酸化物前駆体含有液量が該対向端部よりも多い、請求項１～５のいずれか１項に記載の断熱保護部材。 In the end portion having the joint portion between the base material portion of the laminate and the base material portion in the vertical direction and the opposite end portion thereof, the amount of the oxide precursor containing liquid at the end portion having the joint portion with the base material portion is The heat-insulating protective member according to any one of claims 1 to 5, wherein the heat-insulating protective member is larger than the opposed end portions.
　前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の水分量が該対向端部よりも多い、請求項１～６のいずれか１項に記載の断熱保護部材。 In the end portion having the joint portion between the base material portion of the laminate and the base material portion in the vertical direction and the opposite end portion thereof, the moisture content of the end portion having the joint portion with the base material portion is larger than the facing end portion. The heat insulating protective member according to any one of claims 1 to 6, wherein
　前記積層体の基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、該基材部との結合部を有する端部の嵩密度が該対向端部と比較して高い、請求項１～７のいずれか１項に記載の断熱保護部材。 The bulk density of the end portion having the joint portion with the base material portion at the end portion having the joint portion between the base material portion and the base material portion in the vertical direction of the laminate and the opposite end portion thereof is The heat insulating protective member according to any one of claims 1 to 7, which is relatively high.
　前記基材部、該基材部と垂直方向における基材部との結合部を有する端部とその対向端部において、各部における無機繊維の嵩密度が、基材部、該基材部との結合部を有する端部、該対向端部の順に高くなる、請求項１～８のいずれか１項に記載の断熱保護部材。 The bulk density of the inorganic fiber in each part of the base material part, the end part having the joint part between the base material part and the base material part in the vertical direction, and the opposite end part thereof is the base material part and the base material part. The heat insulating protection member according to any one of claims 1 to 8, wherein the heat insulating protection member becomes higher in the order of an end portion having a coupling portion and the opposite end portion.
　請求項１～９のいずれか１項に記載の断熱保護部材を製造する方法であって、
　前記積層体を構成するためのニードルブランケットと前記基材部とを重ね合わせ、前記折り返し部となる部分で接合する工程と、
　前記積層体を構成するためのニードルブランケットをこの接合部分で基材部と垂直方向に折り立てる工程と
を有する断熱保護部材の製造方法。 A method for producing the heat insulating protective member according to any one of claims 1 to 9,
Overlaying the needle blanket and the base material part for constituting the laminate, and joining at the part to be the folded part,
The manufacturing method of the heat insulation protection member which has the process of folding up the needle blanket for comprising the said laminated body in a perpendicular direction with a base material part in this junction part.
　請求項１ないし９のいずれか１項に記載の断熱保護部材を、炉体の内面又は炉内部材の表面に取り付ける工程を有する断熱保護部材の施工方法。 A construction method for a heat insulating protective member, comprising a step of attaching the heat insulating protective member according to any one of claims 1 to 9 to an inner surface of a furnace body or a surface of a member in the furnace.
　前記断熱保護部材の基材部と反対側の面を、炉体の内面又は炉内部材の表面に取り付ける工程を有する、請求項１１に記載の断熱保護部材の施工方法。 The method for constructing a heat insulation protection member according to claim 11, further comprising a step of attaching a surface of the heat insulation protection member opposite to the base material portion to an inner surface of the furnace body or a surface of a member in the furnace.
　前記炉内部材の施工対象面が凸曲面である、請求項１１又は１２に記載の断熱保護部材の施工方法。 The construction method of the heat insulation protective member according to claim 11 or 12, wherein a construction target surface of the in-furnace member is a convex curved surface.
　前記炉内部材は、スキッドポスト又はスキッドビームである、請求項１３に記載の断熱保護部材の施工方法。 The method for constructing a heat insulating protection member according to claim 13, wherein the in-furnace member is a skid post or a skid beam.
　請求項１ないし９のいずれか１項に記載の断熱保護部材が表面に装着されている炉内部材。 An in-furnace member on which a heat insulating protective member according to any one of claims 1 to 9 is mounted.
　前記炉内部材はスキッドポスト又はスキッドビームである、請求項１５に記載の炉内部材。 The in-furnace member according to claim 15, wherein the in-furnace member is a skid post or a skid beam.
　前記断熱保護部材は、アルミナ・カルシア系組成物を含有する、請求項１５又は１６に記載の炉内部材。 The in-furnace member according to claim 15 or 16, wherein the heat insulating protective member contains an alumina / calcia composition.
　請求項１ないし９のいずれか１項に記載の断熱保護部材が炉体内面又は炉内部材の表面に装着されている加熱炉。 A heating furnace in which the heat insulating protective member according to any one of claims 1 to 9 is mounted on the inner surface of the furnace body or the surface of the in-furnace member.
　前記炉内部材はスキッドポスト又はスキッドビームである、請求項１８に記載の加熱炉。 The heating furnace according to claim 18, wherein the in-furnace member is a skid post or a skid beam.
　前記断熱保護部材は、アルミナ・カルシア系組成物を含有する、請求項１８又は１９に記載の加熱炉。 The heating furnace according to claim 18 or 19, wherein the heat insulating protective member contains an alumina-calcia composition.
　断熱保護部材が表面に装着されている炉内部材であって、
　前記断熱保護部材は、アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有し、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を含有することを特徴とする炉内部材。 An in-furnace member in which a heat insulating protection member is mounted on the surface,
The heat-insulating protective member is a base material comprising a laminate in which a folded back of an alumina fiber needle blanket is laminated, and an alumina fiber needle blanket attached to one surface of the laminated body on the folded portion side of the needle blanket And
The folded portion of the needle blanket and the base material portion are combined,
An in-furnace member comprising an alumina / calcia composition containing aluminum oxide and calcium oxide in at least a part of the laminate and the base material.
　前記炉内部材はスキッドポスト又はスキッドビームである、請求項２１に記載の炉内部材。 The in-furnace member according to claim 21, wherein the in-furnace member is a skid post or a skid beam.
　断熱保護部材が炉体内面又は炉内部材の表面に装着されている加熱炉であって、
　前記断熱保護部材は、アルミナ繊維のニードルブランケットの折り返し体が積層された積層体と、該ニードルブランケットの折り返し部分側の該積層体の１つの面に取り付けられたアルミナ繊維のニードルブランケットからなる基材部とを有し、
　該ニードルブランケットの折り返し部分と該基材部とが結合され、
　該積層体と該基材部の少なくとも一部に、酸化アルミニウム及び酸化カルシウムを含むアルミナ・カルシア系組成物を含有することを特徴とする加熱炉。 A heating furnace in which the heat insulation protection member is mounted on the inner surface of the furnace body or the surface of the in-furnace member,
The heat-insulating protective member is a base material comprising a laminate in which a folded back of an alumina fiber needle blanket is laminated, and an alumina fiber needle blanket attached to one surface of the laminated body on the folded portion side of the needle blanket And
The folded portion of the needle blanket and the base material portion are combined,
A heating furnace comprising an alumina calcia composition containing aluminum oxide and calcium oxide in at least a part of the laminate and the base material.
　前記炉内部材はスキッドポスト又はスキッドビームである、請求項２３に記載の加熱炉。 The heating furnace according to claim 23, wherein the in-furnace member is a skid post or a skid beam.