JP6464353B2 - Release material and its construction method - Google Patents

Release material and its construction method Download PDF

Info

Publication number
JP6464353B2
JP6464353B2 JP2014252097A JP2014252097A JP6464353B2 JP 6464353 B2 JP6464353 B2 JP 6464353B2 JP 2014252097 A JP2014252097 A JP 2014252097A JP 2014252097 A JP2014252097 A JP 2014252097A JP 6464353 B2 JP6464353 B2 JP 6464353B2
Authority
JP
Japan
Prior art keywords
mass
release material
refractory
component
slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2014252097A
Other languages
Japanese (ja)
Other versions
JP2016113655A (en
Inventor
俊久 佐々木
俊久 佐々木
博喜 内山
博喜 内山
松井　泰次郎
泰次郎 松井
新田　法生
法生 新田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Krosaki Harima Corp
Original Assignee
Krosaki Harima Corp
Nippon Steel and Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krosaki Harima Corp, Nippon Steel and Sumitomo Metal Corp filed Critical Krosaki Harima Corp
Priority to JP2014252097A priority Critical patent/JP6464353B2/en
Priority to TW104140321A priority patent/TWI569908B/en
Priority to PCT/JP2015/084416 priority patent/WO2016093237A1/en
Publication of JP2016113655A publication Critical patent/JP2016113655A/en
Application granted granted Critical
Publication of JP6464353B2 publication Critical patent/JP6464353B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/10—Supplying or treating molten metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/06—Constructional features of mixers for pig-iron
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Products (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

本発明は、溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布される剥離材、及びその施工方法に関する。   The present invention relates to a release material applied to the surface of a refractory for lining of a hot metal ladle or a molten steel pan, and a construction method thereof.

従前より、溶銑鍋又は溶鋼鍋においては、鉄皮の内張りに耐火物（内張り用耐火物）が施工されている。溶銑鍋又は溶鋼鍋の操業は、溶融金属（本明細書では、溶銑にスラグを含む溶融金属、あるいは溶鋼にスラグを含む溶融金属を総称して溶融金属という。）を受湯した後、溶融金属を排出し、その後、再び溶融金属を受湯するという繰り返しの操業が行われる。このとき、溶融金属が耐火物の組織に浸透すると、溶融金属が耐火物の表面に付着して排出されず、操業に支障をきたす。このため、溶融金属を排出した後、耐火物表面に残った溶融金属を突き落としたり、酸素ランス等を用いて耐火物表面に付着した溶融金属を洗浄して取り除く必要があった。しかし、溶融金属を取り除く際、耐火物も溶融金属と一緒に取り除かれてしまうという問題があった。   Conventionally, in a hot metal ladle or a molten steel pan, a refractory (a refractory for the lining) is applied to the inner lining of the iron skin. The operation of the hot metal ladle or molten steel pan is performed after receiving molten metal (in this specification, molten metal containing slag in the molten iron, or molten metal containing slag in the molten steel is collectively referred to as molten metal). After that, a repetitive operation is performed in which the molten metal is received again. At this time, if the molten metal penetrates into the structure of the refractory, the molten metal adheres to the surface of the refractory and is not discharged, which hinders operation. For this reason, after discharging the molten metal, it was necessary to push down the molten metal remaining on the surface of the refractory or to wash away the molten metal adhering to the surface of the refractory using an oxygen lance or the like. However, when removing the molten metal, there is a problem that the refractory is also removed together with the molten metal.

このため、溶融金属が耐火物の表面に付着しない特性（剥離性）を有する剥離材が要求されてきた。具体的に、剥離材としては、カーボンを主原料とする配合が知られている（例えば、特許文献１参照）。カーボンは、メタルやスラグに濡れにくく、メタルやスラグが耐火物へ浸透するのを抑制する浸透抑制機能を有する。   For this reason, the peeling material which has the characteristic (peelability) which a molten metal does not adhere to the surface of a refractory has been requested | required. Specifically, as a release material, a blend containing carbon as a main material is known (for example, see Patent Document 1). Carbon is difficult to get wet with metal and slag, and has a permeation suppression function that suppresses permeation of metal and slag into the refractory.

特開昭５９−１３５５７号公報JP 59-13557 A

しかしながら、カーボンは非常に酸化しやすい原料であり、剥離材中のカーボンが酸化してしまうと、カーボンによる浸透抑制機能が損なわれ、溶融金属が耐火物の表面に付着し浸透してしまい、剥離性が低下する問題があった。   However, carbon is a raw material that is very easy to oxidize, and if the carbon in the release material is oxidized, the permeation suppression function by the carbon is impaired, and the molten metal adheres to and penetrates the surface of the refractory, causing peeling. There was a problem that the performance decreased.

そこで、本発明が解決しようとする課題は、溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布される剥離材の剥離性の低下を防止することである。   Thus, the problem to be solved by the present invention is to prevent a decrease in the peelability of the release material applied to the surface of the refractory for the lining of the hot metal ladle or molten steel pan.

本発明者らは、剥離材に、鉄鋼製造プロセスから得られるキッシュ黒鉛と、バインダーとを含むことで、剥離性の低下を防止できる知見を得た。   The inventors of the present invention have found that the release material contains quiche graphite obtained from the steel production process and a binder, thereby preventing a reduction in peelability.

すなわち、本発明の剥離材は、溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布される剥離材であって、鉄鋼製造プロセスから得られるキッシュ黒鉛と、バインダーとを含み、前記キッシュ黒鉛は、その１００質量％中に、カーボン成分を６０質量％以上８０質量％以下、鉄成分を１５質量％以上３５質量％以下、スラグ成分を３質量％以上１５質量％以下含むことを特徴とするものである。 That is, the release liner of the present invention, there is provided a release material applied to the surface of the hot metal pan or lining refractories of ladle, seen containing a kish graphite obtained from iron and steel manufacturing process, a binder, wherein the kish graphite Includes 100% by mass of the carbon component in an amount of 60% by mass to 80% by mass, the iron component in an amount of 15% by mass to 35% by mass, and the slag component in an amount of 3% by mass to 15% by mass. Is.

また、本発明の剥離材の施工方法は、本発明の剥離材に水を添加して、溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布することを特徴とするものである。   Moreover, the construction method of the peeling material of this invention adds water to the peeling material of this invention, and is apply | coated to the surface of the refractory material for lining of a hot metal ladle or a molten steel pan.

本発明の剥離材は、鉄鋼製造プロセスから得られるキッシュ黒鉛（以下、単に「キッシュ黒鉛」という。）と、バインダーとを含む。このキッシュ黒鉛は、製鉄所において鉄鋼製造プロセスから副産物的に発生するものであって、溶融した鉄から過飽和の炭素として析出されるものであるから、必然的に鉄成分とスラグ成分を含む。このため本発明の剥離剤では、キッシュ黒鉛中に含まれる鉄成分とスラグ成分により低融点物質が生成され、この低融点物質が膜となり、カーボンの酸化抑制機能を担う。これにより、カーボンの酸化が抑制されるので、メタルやスラグに対するカーボンの浸透抑制機能（耐濡れ性）がいかんなく発揮され、剥離性の低下を防止することができる。   The release material of the present invention includes quiche graphite (hereinafter simply referred to as “quiche graphite”) obtained from a steel production process and a binder. This quiche graphite is generated as a by-product from the steel manufacturing process in steelworks, and is precipitated as supersaturated carbon from molten iron, and therefore necessarily contains an iron component and a slag component. For this reason, in the release agent of the present invention, a low-melting-point substance is generated by the iron component and the slag component contained in the quiche graphite, and this low-melting-point substance becomes a film and plays a role of suppressing the oxidation of carbon. Thereby, since the oxidation of carbon is suppressed, the carbon permeation suppressing function (wet resistance) with respect to metal and slag is fully exhibited, and deterioration of peelability can be prevented.

また、本発明においては、キッシュ黒鉛を使用することで、上記の効果以外にも以下の効果を奏する。   Moreover, in this invention, there exist the following effects other than said effect by using quiche graphite.

キッシュ黒鉛には鉄成分が含まれるので、塗布対象である耐火物の成分（例えば、Ａｌ２Ｏ３成分、ＣａＯ成分、ＳｉＯ２成分）と鉄成分とが低融点物質を形成することにより、１０００℃以上の高温時における剥離材の接着性が向上する。このため、操業時の高温下においても、剥離材は耐火物に十分に接着することができるので、剥離材が剥がれるのを防ぐことができる。 Since quiche graphite contains an iron component, the refractory component to be applied (for example, Al 2 O 3 component, CaO component, SiO 2 component) and the iron component form a low-melting-point material. The adhesion of the release material at a high temperature of ℃ or higher is improved. For this reason, since the release material can sufficiently adhere to the refractory even under high temperature during operation, it is possible to prevent the release material from peeling off.

また、キッシュ黒鉛には鉄成分が含まれるで、キッシュ黒鉛に含まれる鉄成分が溶融金属に溶け出すことで、鉄を回収できる効果もある。   Moreover, since an iron component is contained in quiche graphite, there exists an effect which iron can be collect | recovered because the iron component contained in quiche graphite melts into a molten metal.

さらには、キッシュ黒鉛は、従来使用されてきた人造黒鉛等よりも低コストであるから、剥離材のコストを低減できる。しかも、キッシュ黒鉛は、従来は廃棄処分されることが多かったことから、このキッシュ黒鉛を使用することで、資源の有効利用が実現でき、かつ、キッシュ黒鉛の処理費用の削減にもつながる。   Furthermore, the cost of the release material can be reduced because quiche graphite has a lower cost than conventionally used artificial graphite and the like. In addition, since quiche graphite has often been disposed of in the past, the use of quiche graphite enables effective use of resources and leads to a reduction in the processing cost of quiche graphite.

本発明の剥離材は、キッシュ黒鉛及びバインダーを含み、これらに水を添加し混合して施工（溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布）される。   The release material of the present invention contains quiche graphite and a binder, and is added to and mixed with water to be applied (applied to the surface of the refractory for the lining of the hot metal ladle or molten steel pan).

キッシュ黒鉛は上述のとおり、製鉄所において鉄鋼製造プロセスから副産物的に発生するものであって、溶融した鉄から過飽和の炭素として析出されるものである。したがって、キッシュ黒鉛中には、カーボン成分のほか、鉄成分及びスラグ成分が含まれている。鉄成分とは、金属鉄及び酸化鉄を総称するものである。スラグ成分とは、一般的に石灰（ＣａＯ）及びシリカ（ＳｉＯ２）を主成分とし、そのほかにアルミナ（Ａｌ２Ｏ３）、マグネシア（ＭｇＯ）を含むものである。なお、キッシュ黒鉛には、上記成分以外にもＮａ、Ｋ等の微量成分も含まれうる。また、一般的にスラグ成分には酸化鉄も含まれるが、本発明においては、スラグ成分に酸化鉄は含まないものとする。 As described above, quiche graphite is generated as a by-product from the steel manufacturing process in steelworks, and is precipitated as supersaturated carbon from molten iron. Therefore, the quiche graphite contains an iron component and a slag component in addition to the carbon component. The iron component is a general term for metallic iron and iron oxide. The slag component generally contains lime (CaO) and silica (SiO 2 ) as main components, and additionally contains alumina (Al 2 O 3 ) and magnesia (MgO). In addition to the above components, the quiche graphite may contain trace components such as Na and K. In general, iron oxide is also included in the slag component, but in the present invention, iron oxide is not included in the slag component.

ここで、剥離材中におけるキッシュ黒鉛の含有量は、剥離材の剥離性の低下防止及び剥離材の耐火物との接着性確保の点から、８０質量％以上９９．５質量以下が好ましい。   Here, the content of the quiche graphite in the release material is preferably 80% by mass or more and 99.5% by mass or less from the viewpoint of preventing the peelability of the release material from being lowered and ensuring the adhesion of the release material to the refractory.

また、キッシュ黒鉛１００質量％に占めるカーボン成分の量は、６０質量％以上８０質量％以下、キッシュ黒鉛１００質量％に占める鉄成分の量は、１５質量％以上３５質量％以下、キッシュ黒鉛１００質量％に占めるスラグ成分の量は、３質量％以上１５質量％以下が好ましい。各成分が上記範囲内であると、剥離性に優れた効果が得られる。   The amount of the carbon component in 100% by mass of the quiche graphite is 60% by mass or more and 80% by mass or less, and the amount of the iron component in the 100% by mass of the quiche graphite is 15% by mass or more and 35% by mass or less. The amount of the slag component in% is preferably 3% by mass or more and 15% by mass or less. The effect excellent in peelability is acquired as each component exists in the said range.

バインダーは、施工時、剥離材に接着機能を付与するために用いる。バインダーとしては、アルミナセメント、リン酸、珪酸、フェノール樹脂等を用いることが可能であるが、水溶性を有し、かつ、水に溶解した際に粘性を発現又は糊化するものであって、１０００℃以下で消失する水溶性高分子が好ましい。水溶性高分子としては、サンザンカム、カラヤガム、グァーガム、ローカストビーンガム、カラギーナン、キサンタンガム、アラビアガム、寒天、ゼラチン、小麦粉でんぷん、馬鈴薯でんぷん、甘藷でんぷん、米でんぷん、タロイモでんぷん、ヤマイモでんぷん、タピオカでんぷん、マンナン、コーンスターチ、デキストリン、ふのり、アルギン酸ソーダ、ＣＭＣ（カルボキシルメチルセルロース）、及びＭＣ（メチルセルロース）から選択される１種又は２種以上を使用できる。   The binder is used to give an adhesive function to the release material during construction. As the binder, it is possible to use alumina cement, phosphoric acid, silicic acid, phenol resin, etc., but it has water solubility and develops or gelatinizes viscosity when dissolved in water, Water-soluble polymers that disappear at 1000 ° C. or lower are preferred. Examples of water-soluble polymers include Sanzancum, Karaya gum, Gua gum, locust bean gum, carrageenan, xanthan gum, gum arabic, agar, gelatin, flour starch, potato starch, sweet potato starch, rice starch, taro starch, yam starch, tapioca starch, manio starch , Corn starch, dextrin, funari, sodium alginate, CMC (carboxyl methylcellulose), and one or more selected from MC (methylcellulose) can be used.

なお、剥離材中におけるバインダーの含有量は、剥離材の耐火物との接着性確保及び経済性の点から、０．５質量％以上２０質量％以下が好ましい。   In addition, the content of the binder in the release material is preferably 0.5% by mass or more and 20% by mass or less from the viewpoint of securing the adhesion of the release material to the refractory and economical.

また、剥離材に水を混ぜることで、剥離材が有機糊料のようになり、著しく粘性が増加し、耐火物との接着性を向上させることができる。水の添加量は、剥離材の耐火物との接着性確保及び施工作業（内張り耐火物表面への塗布作業）の作業性の点から、キッシュ黒鉛及びバインダーの合量に対して外掛けで５０質量％以上１２０質量％以下とするのが好ましい。   Further, by mixing water with the release material, the release material becomes like an organic paste, the viscosity is remarkably increased, and the adhesion to the refractory can be improved. The amount of water to be added is 50 on the basis of the total amount of quiche graphite and binder from the viewpoint of ensuring the adhesion of the release material to the refractory and the workability of construction work (application work on the lining refractory surface). It is preferable to set it as mass% or more and 120 mass% or less.

上記の水溶性高分子及び水を使用しなくても、剥離材に、バインダーとして、綿実油、菜種油、ゴマ油などの植物性油、ラードなどの動物性油、石油系コールタール、石炭系コールタール、グリセリンなどの多価アルコールを使用すると、粘性が発現し、これにキッシュ黒鉛を混ぜて塗布しても剥離性は得られる。しかし、上記の油や多価アルコールは、環境悪化、臭気発生、引火、高コストといったデメリットがある。したがって、バインダーとしては水溶性高分子を使用し、水を添加して施工（内張り用耐火物表面への塗布作業）することが好ましい。   Even without using the above water-soluble polymer and water, as a binder, vegetable oil such as cottonseed oil, rapeseed oil, sesame oil, animal oil such as lard, petroleum-based coal tar, coal-based coal tar, When a polyhydric alcohol such as glycerin is used, viscosity develops, and peelability can be obtained even if quiche graphite is mixed and applied thereto. However, the above oils and polyhydric alcohols have disadvantages such as environmental deterioration, odor generation, ignition, and high cost. Therefore, it is preferable to use a water-soluble polymer as the binder and add water to perform the construction (application work on the refractory surface for the lining).

また、本発明の剥離材においては、防腐剤、殺菌剤、分散剤、界面活性剤、有機繊維及び無機繊維から選択される１種又は２種以上をキッシュ黒鉛及びバインダーの合量に対して外掛けで０．０１質量％以上０．１質量％以下添加してもよい。なお、耐火物への剥離材の塗布時において、接着性をより向上させるには、施工対象の表面が１００℃以下、好ましくは５０℃以下であることが好ましい。   In the release material of the present invention, one or more selected from preservatives, bactericides, dispersants, surfactants, organic fibers and inorganic fibers are excluded from the total amount of quiche graphite and binder. You may add 0.01 mass% or more and 0.1 mass% or less by multiplying. In addition, in order to improve adhesiveness more at the time of application | coating of the peeling material to a refractory, it is preferable that the surface of construction object is 100 degrees C or less, Preferably it is 50 degrees C or less.

表１の各例の剥離材について、剥離性を評価した。   About the release material of each example of Table 1, peelability was evaluated.

Figure 0006464353
Figure 0006464353

剥離性は次の要領で評価した。
まず、外形２００×２００×１５０ｍｍの中心にφ１００ｍｍ×１００ｍｍの孔が設けられている坩堝型金枠にアルミナ７０質量％を含む不定形耐火物を鋳込み、養生、乾燥した。このようにして得られた坩堝の内面側（φ１００ｍｍ×１００ｍｍの孔が形成されている内面）に、表１に示す配合の剥離材を刷毛で塗布した後、予め高周波加熱装置で１５００℃に加熱しておいた溶鋼及びスラグを孔に注いだ。そして、溶鋼及びスラグを冷却した後、坩堝を逆さまにひっくり返して、坩堝中の溶鋼及びスラグを取り出し、坩堝中の耐火物への付着量を評価することで、耐火物に対する溶鋼及びスラグの剥離性の確認を行った。耐火物への溶鋼及びスラグの付着量が少ないほど、耐火物への付着を防ぐことができるので、剥離性が高く良好ということである。 The peelability was evaluated as follows.
First, an amorphous refractory containing 70% by mass of alumina was cast into a crucible-type metal frame provided with a hole of φ100 mm × 100 mm in the center of an outer shape of 200 × 200 × 150 mm, and cured and dried. A release material having the composition shown in Table 1 was applied to the inner surface side of the crucible thus obtained (inner surface on which holes of φ100 mm × 100 mm were formed) with a brush, and then heated to 1500 ° C. in advance with a high-frequency heating device. The molten steel and slag that had been prepared were poured into the holes. Then, after cooling the molten steel and slag, the crucible is turned upside down, the molten steel and slag in the crucible are taken out, and the amount of adhesion to the refractory in the crucible is evaluated, thereby peeling the molten steel and slag from the refractory. The sex was confirmed. The smaller the amount of molten steel and slag attached to the refractory, the better the peelability is because it can be prevented from adhering to the refractory.

具体的な剥離性の評価は、注いだ溶鋼及びスラグの１質量％未満が耐火物へ付着していた場合を◎（優）、注いだ溶鋼及びスラグの１質量％以上１０質量％未満が耐火物へ付着していた場合を○（良）、注いだ溶鋼及びスラグの１０質量％以上が耐火物へ付着していた場合を×（不可）として評価した。   Specific evaluation of peelability is ◎ (excellent) when less than 1% by mass of the poured molten steel and slag adheres to the refractory, and more than 1% by mass and less than 10% by mass of the poured molten steel and slag are refractory. The case where it adhered to the object was evaluated as ◯ (good), and the case where 10% by mass or more of the poured molten steel and slag adhered to the refractory was evaluated as x (impossible).

実施例１〜９、１４、１５及び参考例１０〜１３は、剥離性が○（良）以上となり、良好な結果を示した。特に、キッシュ黒鉛１００質量％中に含まれるカーボン成分、鉄成分及びスラグ成分が上述の好ましい範囲内である実施例１〜９、１４、１５については、剥離性が◎（優）となった。 In Examples 1 to 9, 14, 15 and Reference Examples 10 to 13 , the peelability was ◯ (good) or higher, indicating good results. In particular, in Examples 1 to 9, 14, and 15 in which the carbon component, the iron component, and the slag component contained in 100% by mass of quiche graphite were within the above-described preferable ranges, the peelability was ◎ (excellent).

比較例１は、カーボン源として鱗状黒鉛を用いた例であり、剥離性が×（不可）となった。   Comparative Example 1 is an example using scaly graphite as a carbon source, and the peelability was x (impossible).

比較例２は、酸化防止剤としてＢ４Ｃを添加した例である。この例では、酸化防止剤を添加することで、カーボンの酸化抑制効果が得られ、剥離性が得られることを期待したが、十分な酸化抑止効果は得られず剥離性は×（不可）となった。 Comparative Example 2 is an example in which B 4 C was added as an antioxidant. In this example, it was expected that by adding an antioxidant, an effect of suppressing the oxidation of carbon was obtained, and a peelability was expected, but a sufficient oxidation inhibitory effect was not obtained and the peelability was x (impossible). became.

Claims (4)

溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布される剥離材であって、鉄鋼製造プロセスから得られるキッシュ黒鉛と、バインダーとを含み、前記キッシュ黒鉛は、その１００質量％中に、カーボン成分を６０質量％以上８０質量％以下、鉄成分を１５質量％以上３５質量％以下、スラグ成分を３質量％以上１５質量％以下含む、剥離材。 A hot metal pan or release material applied to the surface of the lining refractories of ladle, and kish graphite obtained from iron and steel manufacturing process, a binder viewed including the Kish graphite, in its 100 wt%, A release material comprising 60% to 80% by mass of a carbon component, 15% to 35% by mass of an iron component, and 3% to 15% by mass of a slag component . 前記バインダーは水溶性高分子である請求項１に記載の剥離材。   The release material according to claim 1, wherein the binder is a water-soluble polymer. 前記キッシュ黒鉛を８０質量％以上９９．５質量％以下、前記バインダーを０．５質量％以上２０質量％以下含む請求項１又は２に記載の剥離材。   The release material according to claim 1 or 2, comprising 80% by mass to 99.5% by mass of the quiche graphite and 0.5% by mass to 20% by mass of the binder. 請求項１から３のいずれかに記載の剥離材に水を添加して、溶銑鍋又は溶鋼鍋の内張り用耐火物の表面に塗布する剥離材の施工方法。 The construction method of the peeling material which adds water to the peeling material in any one of Claim 1 to 3 , and apply | coats to the surface of the refractory material for lining of a hot metal ladle or a molten steel pan.
JP2014252097A 2014-12-12 2014-12-12 Release material and its construction method Expired - Fee Related JP6464353B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2014252097A JP6464353B2 (en) 2014-12-12 2014-12-12 Release material and its construction method
TW104140321A TWI569908B (en) 2014-12-12 2015-12-02 Release agent and its construction method
PCT/JP2015/084416 WO2016093237A1 (en) 2014-12-12 2015-12-08 Release material and method for applying same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014252097A JP6464353B2 (en) 2014-12-12 2014-12-12 Release material and its construction method

Publications (2)

Publication Number Publication Date
JP2016113655A JP2016113655A (en) 2016-06-23
JP6464353B2 true JP6464353B2 (en) 2019-02-06

Family

ID=56107415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014252097A Expired - Fee Related JP6464353B2 (en) 2014-12-12 2014-12-12 Release material and its construction method

Country Status (3)

Country Link
JP (1) JP6464353B2 (en)
TW (1) TWI569908B (en)
WO (1) WO2016093237A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63204097A (en) * 1987-02-19 1988-08-23 小島　政利 Release agent for extraneous slag of molten iron ladle
JPH03137049A (en) * 1989-10-19 1991-06-11 Nippon Steel Corp Manufacture of carbonaceous solid-containing refractories
JP3231454B2 (en) * 1993-03-16 2001-11-19 新日本製鐵株式会社 High temperature lubricant composition
JP3108372B2 (en) * 1996-11-15 2000-11-13 品川白煉瓦株式会社 Immersion nozzle joining method
WO2006035840A1 (en) * 2004-09-29 2006-04-06 Tdk Corporation Conductive particle manufacturing method, conductive paste, and electronic component manufacturing method
JP4905134B2 (en) * 2005-03-25 2012-03-28 東レ株式会社 Planar antenna and manufacturing method thereof
KR101066789B1 (en) * 2010-11-29 2011-09-21 주식회사 넥스텍 Sinter bearing and maufacturing method thereof

Also Published As

Publication number Publication date
TW201630672A (en) 2016-09-01
TWI569908B (en) 2017-02-11
JP2016113655A (en) 2016-06-23
WO2016093237A1 (en) 2016-06-16

Similar Documents

Publication Publication Date Title
JP2014073504A (en) Mold wash for casting
JP2008151425A (en) Repair method of magnesia carbon brick
CN104550679A (en) Environment-friendly alcohol-based coating for sand mold casting
JP2016037647A (en) Frame spray material
JP2011093726A (en) Molded refractory for metal casting, method for manufacturing molded refractory for metal casting, castable refractory composition, and holding member of molten metal for metal casting
JP6464353B2 (en) Release material and its construction method
JP5777561B2 (en) Brick for stainless steel refining ladle and stainless steel refining ladle
KR101225907B1 (en) Process for the production of enamelled steel sheet or part
JP6497405B2 (en) Mud material for closing blast furnace outlet
CN105418085A (en) Magnesia carbon gunning material
JP2007314875A (en) Antioxidant composition for heat-treatment of steel pipe
BR112016015610B1 (en) method for suppressing back face oxidation of carbon containing refractory, coating structure and carbon containing refractory
JP2013116830A (en) Monolithic refractory for dry spray
TWI478892B (en) No carbon and aluminum magnesium does not burn bricks
JP6340131B1 (en) Hot repair spray material
JP6537286B2 (en) Unshaped refractory composition for metal casting, method for producing the same, cured product of unshaped refractory composition for metal casting
JP2002363532A (en) Adhesion inhibitor for rubber
JP4822192B2 (en) Non-fired carbon-containing refractories
JP6432616B2 (en) Method of applying heat insulating material to nozzle for continuous casting of steel
JP2008120608A (en) Oxidation preventing coating material for graphite-containing refractory
TW201807200A (en) Desulfurization agent for steelmaking and desulfurizing method capable of effectively achieving the desulfurization effect and greatly reducing the desulfurization cost in the steelmaking process
CN103992122B (en) A kind of aluminium stove prepurging preservative
JP2021120334A (en) Hot spraying repair material
JP5656285B2 (en) Indefinite refractory
JP2022053646A (en) Extending method for unshaped refractory

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20171002

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20180904

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20181105

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20181120

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20181130

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20181130

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20181130

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20181130

R150 Certificate of patent or registration of utility model

Ref document number: 6464353

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees