JPS63236783A - Manufacture of carbon adhesion-preventive refractory brick - Google Patents
Manufacture of carbon adhesion-preventive refractory brickInfo
- Publication number
- JPS63236783A JPS63236783A JP6806487A JP6806487A JPS63236783A JP S63236783 A JPS63236783 A JP S63236783A JP 6806487 A JP6806487 A JP 6806487A JP 6806487 A JP6806487 A JP 6806487A JP S63236783 A JPS63236783 A JP S63236783A
- Authority
- JP
- Japan
- Prior art keywords
- glaze
- firing
- brick
- carbon adhesion
- refractory brick
- 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.)
- Pending
Links
- 239000011449 brick Substances 0.000 title claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 11
- 229910052799 carbon Inorganic materials 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000010304 firing Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 3
- 239000005350 fused silica glass Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000004017 vitrification Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000004901 spalling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- HEHRHMRHPUNLIR-UHFFFAOYSA-N aluminum;hydroxy-[hydroxy(oxo)silyl]oxy-oxosilane;lithium Chemical compound [Li].[Al].O[Si](=O)O[Si](O)=O.O[Si](=O)O[Si](O)=O HEHRHMRHPUNLIR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052670 petalite Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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）
本発明はコークス炉等において、乾溜の際生成するター
ル分等のカーボン付着を防止すること及び付着したカー
ボン分を分離することが容易な耐火れんがの製造方法に
関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention is a refractory device that is used in coke ovens, etc., to prevent the adhesion of carbon such as tar produced during dry distillation, and to easily separate the adhering carbon. This relates to a method for manufacturing bricks.
（従来の技術）
コークス炉等においてカーボン耐着防止を目的として釉
薬を耐火物の表面に塗布した耐火物としては例えば特開
昭５９−１７４５８５号公報にて公知であるが、この公
知例は予じめ母材れんがを焼成し、その後釉薬を塗布し
、釉薬の融点以上の温度で加熱溶融し、所望の釉層を形
成するという方式にて製造している。このため焼成が２
回行われており、製造日数、コスト等の不利益が生じて
いる。(Prior Art) A refractory in which a glaze is applied to the surface of a refractory for the purpose of preventing carbon adhesion in a coke oven or the like is known, for example, in Japanese Patent Laid-Open No. 174585/1985, but this known example was not previously disclosed. It is manufactured by firing a base material brick, then applying a glaze, and heating and melting it at a temperature above the melting point of the glaze to form the desired glaze layer. Therefore, the firing time is 2
This has resulted in disadvantages such as production time and costs.
（発明が解決しようとする問題点）。(The problem that the invention seeks to solve).
本発明は、この二度焼成工程を省くべく、母材が素地段
階において釉薬を塗布し、一度の焼成にて、母材の焼結
及び釉薬の溶着を完了させることにより、カーボン附着
防止用耐火れんがを短期間にしかも安価に供給出来等多
大の利点をもたらすものである。In order to eliminate this double firing process, the present invention applies a glaze to the base material at the base stage, and completes the sintering of the base material and welding of the glaze in one firing. This method brings many advantages such as being able to supply bricks in a short period of time and at low cost.
（問題点を解決するための手段）
本発明は上記の点に鑑みて、母材と釉薬の焼成収縮及び
稼動時における膨張率等の最適組み合せを求めた結果、
これらの最適組み合わせを見つけ。(Means for Solving the Problems) In view of the above points, the present invention has been developed as a result of finding the optimal combination of firing shrinkage of the base material and glaze, expansion coefficient during operation, etc.
Find the best combination of these.
母材れんがの焼成と同時に釉薬のコーティングを可能に
したものである。This makes it possible to coat the glaze at the same time as firing the base brick.
本発明の母材としてはコークス炉用等加熱、冷却頻度の
多い用途には低膨張性、耐スポール性に優れた、コージ
ェライト含有又は溶融石英含有耐火物を使用する。As the base material of the present invention, a cordierite-containing or fused silica-containing refractory, which has low expansion and excellent spalling resistance, is used for applications that require frequent heating and cooling, such as for coke ovens.
母材の特性として耐スポール性を耐火性からコージェラ
イトとして又は溶融石英を２０〜３０％含有するものが
一般的であるが、焼成収縮率は後述の釉薬との関連から
０．３％以下と変動が少ないものが適している。（実施
例参照）
釉薬の溶融温度は、母材の焼結温度・より低く、実炉使
用温度（１３００℃以下）より高く設定する必要がある
。又、釉薬は母材と同様な膨張特性すなわち低膨張性を
もたらすものが良く、本質的成分として、Ｓｉｎ、、
Ａｎ２０．、ＭｇＯ，Ｌｉ、Ｏｌに、０１Ｎａ、 ０
を含むものである。The base material is generally made of cordierite or contains 20 to 30% of fused quartz for its spall resistance due to its fire resistance, but the firing shrinkage rate is 0.3% or less due to the relationship with the glaze described below. One with little fluctuation is suitable. (See Examples) The melting temperature of the glaze needs to be set lower than the sintering temperature of the base material and higher than the actual furnace usage temperature (1300° C. or lower). In addition, the glaze should preferably have the same expansion characteristics as the base material, that is, low expansion, and should contain Sin,...
An20. , MgO, Li, Ol, 01Na, 0
This includes:
焼成条件としては釉薬の硝子化に重要な管理項目であり
、焼成不足の時は硝子化反応が完了せず釉層表面が多孔
質となり１反対に焼成過剰の時は釉薬が流れ、必要な釉
層が流下し、母材表面が露出するため、ゼーゲル錐によ
る±１０℃の実効温度管理が必要である。Firing conditions are an important control item for turning the glaze into vitrification; if the firing is insufficient, the vitrification reaction will not be completed and the surface of the glaze layer will become porous; on the other hand, if the firing is over-firing, the glaze will flow and the required glaze will be formed. Since the layer flows down and the base material surface is exposed, effective temperature control of ±10°C using a Seegel cone is required.
（実施例） 本発明を更に詳細に説明するべく以下に実施例を示す。(Example) Examples are shown below to explain the present invention in more detail.
母材配合を通常のれんが製造法に従い、粉砕、混合、成
形、乾燥した素地に、良く混合した釉薬を、れんがの所
定面に塗布、吹き付は等で、コーティングし、再乾燥後
、ゼーゲル錐で５ＫＩＩないし１２番で焼成したもので
ある。The base material composition is crushed, mixed, molded and dried according to the usual brick manufacturing method, and then a well-mixed glaze is applied to the specified surface of the brick, sprayed, etc. to coat it, and after re-drying, it is segel-shaped. It was fired at No. 5KII to No. 12.
母材（釉薬Ｈベース）重量（％）
ＢＣＤＥ
焼結コージェライト −１５２５３５−溶融石英
−−−−２０
粘土質シヤモツト ８５ ６０ ７０ ５０
・ ６５バインダー粘土 １５ １５ １５
１５ １５焼成収縮率 ０．１５ ０，
１５ ０．２０ ０，３５ ０．２０耐スポーリング性
村 × Δ Ｏｏ 。Base material (Glaze H base) Weight (%) BCDE Sintered cordierite -152535-Fused quartz
-----20 Clay Shamotsu 85 60 70 50
・65 binder clay 15 15 15
15 15 Firing shrinkage rate 0.15 0,
15 0.20 0,35 0.20 Spalling resistance village × Δ Oo.
釉薬の溶着状況中２ Ｘ Δ ０ Δ ０
＊ｌ １０００℃１５分急熱、３分水冷、１２分空冷
×印：１０回以下で剥離
Δ印：１０〜１５回で剥離
０印：１５回で剥離無し
・２ ×印：剥離の有るもの
Δ印：亀裂の有るもの
０印：硝子化し、剥離、亀裂の無いもの釉薬（母材Ｃベ
ース）重量（％）
Ｆ Ｇ ＨＩ
ペタライト ７０％ ８０％ ９０％ ９
０％無定形シリカ ２５ １５ ８
８マグネシア ＋２．５ ＋２．５
＋２．５ ＋２．５バインダー粘土 ５ ５
２ ２水硝子２号液 ＋３ ＋３
＋３ ＋６水 ＋４０ ＋
４０ ＋４０ ＋４０Ｌｉ、０
２．６ ２．９ ３．４ ３．３
Ｒ，０１，６１，６１，６２，２
釉薬の表面状況・２ × Δ ０ Δ
実施例より、母材としては焼成収縮率が０〜０．３％、
１０００℃における熱間線膨張率が０．４〜０．５％
の範囲にあるＣ、Ｅ材質が適していることがわかる。Glaze welding status 2 X Δ 0 Δ 0
*l Rapid heating at 1000℃ for 15 minutes, water cooling for 3 minutes, air cooling for 12 minutes × mark: Peeling after 10 times or less Δ mark: Peeling after 10 to 15 times 0 mark: No peeling after 15 times ・2 × mark: Peeling Δ mark: with cracks 0 mark: with no vitrification, peeling, or cracks Glaze (base material C) weight (%) F G HI Petalite 70% 80% 90% 9
0% amorphous silica 25 15 8
8 Magnesia +2.5 +2.5
+2.5 +2.5 binder clay 5 5
2 2 water glass No. 2 liquid +3 +3
+3 +6 water +40 +
40 +40 +40Li, 0
2.6 2.9 3.4 3.3
R, 01, 61, 61, 62, 2 Glaze surface condition・2 × Δ 0 Δ
From the examples, the base material has a firing shrinkage rate of 0 to 0.3%,
Hot linear expansion coefficient at 1000℃ is 0.4-0.5%
It can be seen that materials C and E within the range of are suitable.
釉薬としてはＬｉ２Ｏが３〜４％、Ｒ２０が１〜２％の
範囲にあるＨ材質が適していることがわかる。It can be seen that H material having a Li2O content of 3 to 4% and an R20 content of 1 to 2% is suitable as a glaze.
（発明の効果）
これらのカーボン付着防止耐火物をコークス炉ドアーに
施工し、稼動開始後３ケ月後に点検したところ釉薬を施
していない耐火れんが部はカーボンが付着し始めている
に対し、施釉部にはカーボン付着は全く認めら九ず光沢
を有していた。(Effect of the invention) When these carbon adhesion prevention refractories were applied to a coke oven door and inspected 3 months after the start of operation, carbon began to adhere to the unglazed refractory bricks, while carbon was beginning to adhere to the glazed parts. No carbon adhesion was observed and the film had a glossy appearance.
Claims (3)
結及び釉層の溶着を同時焼成によって行うことを特徴と
するカーボン附着防止用耐火れんがの製造方法。(1) A method for producing fireproof bricks for preventing carbon adhesion, characterized in that a glaze layer is applied to the surface of a base brick, and sintering of the base brick and welding of the glaze layer are performed by simultaneous firing.
における１０００℃の熱間線膨張率が０．４〜０．５％
の範囲にあることを特徴とする特許請求の範囲第１項記
載のカーボン附着防止用耐火れんがの製造方法。(2) The firing shrinkage rate of the base material brick is 0.3% or less, and the hot linear expansion coefficient at 1000°C after firing is 0.4 to 0.5%.
A method for manufacturing a refractory brick for preventing carbon adhesion according to claim 1, wherein the refractory brick is within the range of claim 1.
４％、Ｒ＿２Ｏ（Ｎａ＿２Ｏ、Ｋ＿２Ｏ）を１〜２％、
ＭｇＯを２〜３％、残部がＡｌ＿２Ｏ＿３−ＳｉＯ＿２
を主体とすることを特徴とする。特許請求の範囲第１項
記載のカーボン附着防止用耐火れんがの製造方法。(3) The composition of the glaze forming the glaze layer is Li_2O, 3~
4%, R_2O (Na_2O, K_2O) 1-2%,
2-3% MgO, balance Al_2O_3-SiO_2
It is characterized by being mainly . A method for manufacturing a refractory brick for preventing carbon adhesion according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806487A JPS63236783A (en) | 1987-03-24 | 1987-03-24 | Manufacture of carbon adhesion-preventive refractory brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806487A JPS63236783A (en) | 1987-03-24 | 1987-03-24 | Manufacture of carbon adhesion-preventive refractory brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63236783A true JPS63236783A (en) | 1988-10-03 |
Family
ID=13362978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6806487A Pending JPS63236783A (en) | 1987-03-24 | 1987-03-24 | Manufacture of carbon adhesion-preventive refractory brick |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63236783A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995031418A1 (en) * | 1994-05-17 | 1995-11-23 | Asahi Chemical Company, Limited | Glazing layer forming composition for hot coating of oven refractory and method of forming glazing layer |
-
1987
- 1987-03-24 JP JP6806487A patent/JPS63236783A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995031418A1 (en) * | 1994-05-17 | 1995-11-23 | Asahi Chemical Company, Limited | Glazing layer forming composition for hot coating of oven refractory and method of forming glazing layer |
| US6096432A (en) * | 1994-05-17 | 2000-08-01 | Asahi Chemical Company, Limited | Glazing layer-forming composition for hot-coating of furnace refractories and method of forming glazing layer |
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