JPS60231453A - Porous refractories and manufacture - Google Patents
Porous refractories and manufactureInfo
- Publication number
- JPS60231453A JPS60231453A JP8574984A JP8574984A JPS60231453A JP S60231453 A JPS60231453 A JP S60231453A JP 8574984 A JP8574984 A JP 8574984A JP 8574984 A JP8574984 A JP 8574984A JP S60231453 A JPS60231453 A JP S60231453A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- fiber
- sio
- sol
- porous refractory
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高温用耐火断熱材、高温流体用フィルター、
触媒担体等に用いる少なくとも１０００ｒ以上の耐熱性
を有するセラミックファイバー製の多孔性耐火物及びそ
の製造法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a fireproof insulation material for high temperatures, a filter for high temperature fluids,
The present invention relates to a porous refractory made of ceramic fibers having a heat resistance of at least 1000 r for use as a catalyst carrier, etc., and a method for producing the same.
溶融金属の湯道、タンディツシュ、バーナータイル、電
気炉の内張等に用いる高温用耐火断熱材、高温流体用フ
ィルター、高温反応用触媒担体等として用いる七ラミッ
クファイバー成形品は、一般にＳｉＯ繊維、ＡＩＯ繊維
、Ａｔ ０−８ｉＯ繊維を、２ ２３ ２３ ２
シリカゾル、アルミナゾルを含有する水中に分散し、真
空成形を行ない、乾燥した成形品を１２５０〜１３００
Ｃで１〜１．５時間焼成して得ている。しかしこれら
の製品の曲げ強さくＪ工Ｓ ９５０３−１９６９．５，
７曲げ強さによる。以下間し）は２〜４・ｋβであって
なお充分ではない。シリカゾル、アルミナゾル以外のリ
ン酸、水ガラス等を結合剤として用いると、繊維を劣化
させ、逆に曲げ強さか低下したり、耐熱性を低下させた
りして好ましくない。Heptaramic fiber molded products used as high-temperature fireproof insulation materials for molten metal runners, tundishes, burner tiles, electric furnace linings, filters for high-temperature fluids, catalyst carriers for high-temperature reactions, etc. are generally made of SiO fibers, AIO fibers, etc. Fibers, At 0-8iO fibers, are dispersed in water containing 2 23 23 2 silica sol and alumina sol, vacuum formed, and the dried molded product is 1250 to 1300
It is obtained by firing at C for 1 to 1.5 hours. However, the bending strength of these products is J Engineering S 9503-1969.5,
7 Depends on bending strength. (below) is 2 to 4·kβ, which is still not sufficient. If phosphoric acid, water glass, or the like other than silica sol or alumina sol is used as a binder, it is not preferable because it deteriorates the fibers and conversely reduces bending strength or heat resistance.
本発明は上記のセラミック繊維の耐熱性を低下すること
なく、従来よりも曲げ強さの大きな成形品からなる多孔
性耐火物、及びその耐火物を安価に得るための製造法を
供せんとするものである。The present invention aims to provide a porous refractory made of a molded product with greater bending strength than before without reducing the heat resistance of the ceramic fibers, and a manufacturing method for obtaining the refractory at a low cost. It is something.
本発明は上記目的を達するため、ＳｉＯ繊維、Ａｔ Ｏ
繊維、ＡＡＯ−３ｉＯ繊維の一つまたは複数２３ ２３
２
からなる繊維の集合体の繊維の交差点が、主としてＳｉ
Ｏ、ＢＯからなる組成物で融着されている２ ２ ３
多孔性耐火物を構成したこと、及びこれら繊維をＳｉＯ
ゾルを含有する水中に分散し、真空成形し、乾燥焼成を
行なった後、ＢＯを溶解含有する水溶 ３
液に浸漬し、乾燥焼成して多孔性耐火物を得ることにあ
る。In order to achieve the above object, the present invention uses SiO fiber, AtO
Fibers, one or more of AAO-3iO fibers 23 23
The intersection of the fibers of the fiber aggregate consisting of 2
The 2 2 3 porous refractory was constructed by fusion bonding with a composition consisting of O and BO, and these fibers were bonded with SiO
The purpose is to obtain a porous refractory by dispersing it in water containing a sol, vacuum forming it, drying it and baking it, then immersing it in an aqueous solution containing dissolved BO, drying it and baking it.
本発明は、上記１００００以上の耐熱性を有する繊維を
、例えば約３０〜１ ｍｒｎ 、大部分を５〜７ ｍｍ
の長さにしたものを、水１００重量部に対し約１０重量
部以下と、シリカゾルを固形分で１〜２重量部を水に分
散し、真空成形し、乾燥した成形品を１２５０〜１３０
０ Ｃで１〜１．５時間焼成する。繊維間に含まれた水
が乾燥によって蒸発し、水中に分散されていたシリカゾ
ルが濃縮され、更に焼成後、繊維１００重量部に対し９
〜１０重量部が融着された状態になるようにする。次い
でＢＯを水１００重量部に対し ３
約１部溶解した硼酸水中に上記焼成した成形品を浸漬し
、引き」二げて乾燥し、１２５０〜１ａｏｏ ｔＺ’で
１〜１．５時間焼成する。ＢＯは焼成後で繊維１００重
量 ３
部に対し２〜ｉｏ重量部好ましくは３〜５重量部が結合
された状態になるようにするのが良いＱ硼酸は３０ｏ
ＣでＢＯになる。ＢＯの融点５７７Ｃで沸点２３ ２３
＋
１５００ ｔｌ：’以」−であるが、９００Ｃ頃から部
分的に昇華を始め主として繊維の交差点の隙間に集まり
、シリカゾルによるＳｉＯと反応し一種の硼酸ガラスと
なって繊維の交差点を融着する。このとき繊維中の成分
の一部もこの中に溶解することがあるが、繊維の組成を
変化させ、耐熱性を低下させるような反応は生じない。The present invention uses fibers having a heat resistance of 10,000 or more, for example, about 30 to 1 mrn, and most of them 5 to 7 mm.
100 parts by weight or less per 100 parts by weight of water, and 1 to 2 parts by weight of silica sol as a solid content are dispersed in water, vacuum formed, and dried.
Calcinate at 0 C for 1-1.5 hours. The water contained between the fibers evaporates during drying, and the silica sol dispersed in the water is concentrated.
~10 parts by weight should be fused. Next, the fired molded product is immersed in boric acid water containing about 1 part of BO dissolved in 100 parts by weight of water, dried by pulling, and fired for 1 to 1.5 hours at 1250 to 100 tZ'. After firing, it is recommended that 2 to io parts by weight, preferably 3 to 5 parts by weight, be bound to 3 parts by weight of 100 parts of fiber.
C becomes BO. The melting point of BO is 577C and the boiling point is 23 23
+ 1500 tl: 'here' - However, from around 900C, it begins to partially sublimate and mainly collects in the gaps between the intersections of the fibers, reacts with SiO produced by the silica sol, becomes a type of boric acid glass, and fuses the intersections of the fibers. . At this time, some of the components in the fibers may also be dissolved therein, but no reaction occurs that changes the composition of the fibers or lowers their heat resistance.
本発明例と他の例との曲げ強さくｋｇｆｉｍ ）と、嵩
密度０内を次表に示す。The following table shows the bending strength (kgfim) and bulk density of the present invention example and other examples within 0.
上表で用いたＡ１２０３−８ｉＯ繊維は商品名カオウ一
部として出願人市販のセラミック繊維、Ａｔ２０３繊維
は商品名サフイルとして英国工Ｃ工製の市販セラミック
繊維、Ａ１２０３−Ｂ２０３−８１０２繊維は商品名ネ
クステル３１２として英国工Ｃ工製の市販のセラミック
繊維である。The A1203-8iO fiber used in the above table is a ceramic fiber commercially available from the applicant under the trade name Kaoh, the At203 fiber is a commercially available ceramic fiber manufactured by British Industrial Co., Ltd. under the trade name Safil, and the A1203-B203-8102 fiber is a commercially available ceramic fiber manufactured by the applicant under the trade name Nextel. 312 is a commercially available ceramic fiber made by British company C.
第２図はＡｔ ０−３ｊ、Ｏ繊維をシリカゾルのみを２
３ ２
結合剤として用い成形焼成した多孔性耐火物の電子顕微
鏡写真であるが、８１０２粒子が粒状で繊維表面に部分
的にしか融着しておらず、繊維の交差点を結合した部分
が極めて僅かである。これに対し本発明多孔性耐火物は
第１図の電子顕微鏡写真に示すようにＡ４０−５ｉＯ繊
維の交差点を完全に融２ ３ ２
着しており、繊維の組成も変化することなく原状を保っ
ていることが判る。Figure 2 shows At 0-3j, O fibers and silica sol only.
3 2 This is an electron micrograph of a porous refractory that has been molded and fired as a binder, and shows that the 8102 particles are granular and only partially fused to the fiber surface, and the portions where fiber intersections are bonded are extremely small. It is. In contrast, the porous refractory of the present invention completely fuses the intersections of A40-5iO fibers, as shown in the electron micrograph in Figure 1, and maintains its original state without changing the composition of the fibers. It can be seen that
上表でＢ２Ｏ３を成分として含有するＡｔ２０３−Ｂ２
０３− Ｓ ｉ Ｏ２繊維を使用した成形体では、５１
０２ゾルを結合剤として用いただけで成形体全組成中に
占めるＳｉＯ含有量が増加するに従い曲げ強さが増加し
ているが、これは焼成の際に繊維成分が反応して低融点
組成物を生じ溶融物を多量に生じて繊維自体も溶融し収
縮したことによるものである。このようになると繊維の
もつ耐熱性が低下してしまう。At203-B2 containing B2O3 as a component in the above table
03- In the molded article using S i O2 fiber, 51
When only using 02 sol as a binder, the bending strength increases as the SiO content in the overall composition of the molded product increases, but this is because the fiber components react during firing and the low melting point composition This is because a large amount of molten material was produced and the fibers themselves melted and shrunk. When this happens, the heat resistance of the fibers decreases.
また従来のＳｉＯゾル・Ａ７！Ｏゾルだけを結合剤と２
２ ３
した場合には繊維の交差点が充分結合されないため曲げ
強さが向」ニせず、リン酸、水ガラスを結合剤として用
いたものでは、焼成によって組成が変化し、繊維が劣化
した。Also, the conventional SiO sol A7! O sol only as binder and 2
In the case of 2 3, the bending strength was not improved because the intersections of the fibers were not bonded sufficiently, and in the case of those using phosphoric acid and water glass as binders, the composition changed due to firing and the fibers deteriorated.
以上本発明多孔性耐火物によれば、繊維自体の組成を変
化せず従って繊維の耐熱性を低下させずに、曲げ強さの
大きい多孔性耐火物を提供できるので、取扱いに強度を
必要とする高温用断熱材、高温用フィルター、触媒担体
等へ、ＳｉＯ繊維、１１０ 繊維、ｋｌ Ｏ−３ｊ、Ｏ
繊維成形品の用途を拡大 ３
できる。As described above, according to the porous refractory of the present invention, it is possible to provide a porous refractory with high bending strength without changing the composition of the fiber itself and without reducing the heat resistance of the fiber. For high temperature insulation materials, high temperature filters, catalyst carriers, etc., SiO fiber, 110 fiber, kl O-3j, O
It is possible to expand the uses of fiber molded products.
また本発明製造法では、繊維の組成、用途に対し耐火性
と、曲げ強さを考慮して、結合剤としてのＳｉＯ、Ｅ
Ｏの付加量を容易に調節でき、５ｉｎ２２ ２ ３
ゾル、ＢＯ粉を使用して安価に強度の大きい多孔性耐火
物を提供できる。In addition, in the manufacturing method of the present invention, SiO, E
The amount of O added can be easily adjusted, and porous refractories with high strength can be provided at low cost using 5in2223 sol and BO powder.
第１図はＡＩ ０−３ｉＯ繊維を用いた本発明による２
３ ２
多孔性耐火物の電子顕微鏡写真図、第２図はＡ１２０３
− Ｓ ］−０繊維をＳｉＯゾルを結合剤として成形焼
成し２ま
た多孔性耐火物の電子顕微鏡写真図である。
出 願 人 インライト・ノ・ブコツク耐火株式会社代
理人 弁理土中村勝成Figure 1 shows 2 according to the present invention using AI 0-3iO fibers.
3 2 Electron micrograph of porous refractory, Figure 2 is A1203
-S]-0 fibers are molded and fired using SiO sol as a binder, and are electron micrographs of porous refractories. Applicant: Inrite No. Bukoku Fireproofing Co., Ltd. Agent: Katsunari Donakamura, Patent Attorney
Claims (1)
繊維２ ２３ ２３ ２ の一つまたは複数からなる繊維集合体の繊維の交差点が
主としてＳ工０ 、ＢＯからなる組成物で２ ２ ３ 融着されていることを特徴とする多孔性耐火物。 （２） ｓ１ｏ繊維、Ａ７！２０３繊維、Ａ１２０３−
８工０２繊維の一つまたは複数をＳｉＯゾルを含有する
水中に分散し、真空成形し、乾燥焼成を行なった後・Ｂ
Ｏを溶解含有する水溶液に浸漬し、乾燥焼成３ することを特徴とする多孔性耐火物の製造法。[Claims] (]) s1o fiber, At O fiber, A70-SiO
1. A porous refractory, characterized in that the intersections of fibers of a fiber assembly consisting of one or more fibers 2 23 23 2 are fused with a composition mainly consisting of SO and BO. (2) s1o fiber, A7!203 fiber, A1203-
After dispersing one or more of the 8-02 fibers in water containing SiO sol, vacuum forming, and drying and firing, B
A method for producing a porous refractory, which comprises immersing it in an aqueous solution containing dissolved O, followed by drying and firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8574984A JPS60231453A (en) | 1984-04-27 | 1984-04-27 | Porous refractories and manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8574984A JPS60231453A (en) | 1984-04-27 | 1984-04-27 | Porous refractories and manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60231453A true JPS60231453A (en) | 1985-11-18 |
| JPH0148225B2 JPH0148225B2 (en) | 1989-10-18 |
Family
ID=13867497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8574984A Granted JPS60231453A (en) | 1984-04-27 | 1984-04-27 | Porous refractories and manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60231453A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263917A (en) * | 1986-05-08 | 1987-11-16 | Ibiden Co Ltd | High heat-resistant roll |
| JPS62284011A (en) * | 1986-05-31 | 1987-12-09 | Ibiden Co Ltd | High heat resistant roll |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4935627A (en) * | 1972-06-30 | 1974-04-02 | Du Pont | |
| JPS5163812A (en) * | 1974-11-30 | 1976-06-02 | Toyota Motor Co Ltd | DANNETSUYOSERAMITSUKUSENISEIKEITAI |
| JPS52137030A (en) * | 1976-05-04 | 1977-11-16 | Minnesota Mining & Mfg | Manufacture of refractory fiber |
| JPS547359A (en) * | 1977-06-17 | 1979-01-20 | Canon Inc | Dichroic film having suitable half-width |
| JPS5537500A (en) * | 1978-09-08 | 1980-03-15 | Us Government | Refractory composite |
| JPS57123604A (en) * | 1981-01-23 | 1982-08-02 | Mitsubishi Electric Corp | Heat resistant composite insulator |
-
1984
- 1984-04-27 JP JP8574984A patent/JPS60231453A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4935627A (en) * | 1972-06-30 | 1974-04-02 | Du Pont | |
| JPS5163812A (en) * | 1974-11-30 | 1976-06-02 | Toyota Motor Co Ltd | DANNETSUYOSERAMITSUKUSENISEIKEITAI |
| JPS52137030A (en) * | 1976-05-04 | 1977-11-16 | Minnesota Mining & Mfg | Manufacture of refractory fiber |
| JPS547359A (en) * | 1977-06-17 | 1979-01-20 | Canon Inc | Dichroic film having suitable half-width |
| JPS5537500A (en) * | 1978-09-08 | 1980-03-15 | Us Government | Refractory composite |
| JPS57123604A (en) * | 1981-01-23 | 1982-08-02 | Mitsubishi Electric Corp | Heat resistant composite insulator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62263917A (en) * | 1986-05-08 | 1987-11-16 | Ibiden Co Ltd | High heat-resistant roll |
| JPS62284011A (en) * | 1986-05-31 | 1987-12-09 | Ibiden Co Ltd | High heat resistant roll |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0148225B2 (en) | 1989-10-18 |
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