JPS6356190B2 - - Google Patents
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- Publication number
- JPS6356190B2 JPS6356190B2 JP56200031A JP20003181A JPS6356190B2 JP S6356190 B2 JPS6356190 B2 JP S6356190B2 JP 56200031 A JP56200031 A JP 56200031A JP 20003181 A JP20003181 A JP 20003181A JP S6356190 B2 JPS6356190 B2 JP S6356190B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- press
- parts
- basic
- water
- 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
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- 239000000463 material Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 10
- 239000001488 sodium phosphate Substances 0.000 claims description 9
- 239000011822 basic refractory Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims 1
- NFIYTPYOYDDLGO-UHFFFAOYSA-N phosphoric acid;sodium Chemical compound [Na].OP(O)(O)=O NFIYTPYOYDDLGO-UHFFFAOYSA-N 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 description 8
- 235000021317 phosphate Nutrition 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- 235000011008 sodium phosphates Nutrition 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
【発明の詳細な説明】
本発明は製鋼容器の損傷部分を熱間にて圧入補
修をする塩基性圧入材に関するものである。最近
鋼種の高級化によりRHや、DH等の真空脱ガス
装置の設置が各製鉄所にて行なわれ普及してい
る。このRHやDH等の脱ガス装置の溶鋼につか
るスノーケル部分は損傷が大きく、このため塩基
性熱間吹付材やアルミナ系の熱間圧入材による補
修が行なわれているが、施工方法や耐用性の面か
ら満足すべきまでに至つていないのが現状であ
る。
すなわち塩基性熱間吹付材では
１ リバウンドロスが多くかつ添加水分量が多い
ので多孔質の組織となりやすい。
２ 吹付材が層状に積み重り易く層の部分から剥
離しやすい。
３ 接着力が低く使用中に接着面より剥離しやす
い
といつた欠点があげられ、塩基性材料の本質的に
有する耐用性が得られていないのが現状である。
圧入補修は材料を適当量の水で混練後ポンプに
より10〜20ｍのホース内を圧送し、あらかじめ設
置した鉄枠内に圧入し、れんがの損傷部を補修す
る方法であるが、アルミナ系熱間圧入材では
１ 塩基性材料に比べ耐用性に劣る。
２ 溶けて浮遊したアルミナ粒は硬く鋼中の介在
物となり好ましくない。
といつた欠点があり、塩基性吹付材アルミナ系圧
入材ともに耐用性の点において不十分であり、さ
らに製鋼能力の向上、省エネルギーの観点より塩
基性圧入材の開発が望まれている現状である。
塩基性圧入材は１）アルミナ系圧入材に比べ耐
食性に優れている。２）吹付材に比べ均一で緻密
な組織を形成するため耐食性に優れかつ吹付材の
ようなリバウンドロスがないといつた特徴があげ
られる。
しかし塩基性圧入材は
１ 水で混練後硬化するのが早く、20〜30分かか
る圧入施工中に硬化し、ポンプ圧入が不可能と
なり可使時間の設定がしがたい。
２ 流動性があつてかつ粘性のある状態となりに
くい。
３ 圧入を入れても十分な展開性が得られない。
といつた技術的な問題があり、特に流動性と粘性
との関係から圧入性と圧入後の展開性を兼ね備え
ることが非常に難しく実用化に至つていない。
本発明の塩基性圧入材用の有効なバインダーに
つき種々検討した結果バインダーとして炭酸カル
シウム及び増粘剤、硬化遅延剤、難溶性ナトリウ
ム系リン酸塩等のリン酸塩を複合添加した塩基性
圧入材は水で混練後施工中においても極めて安定
であり、適度の粘弾性のある泥漿によつて圧入
性、圧入後の展開性および炉壁との接着性に優れ
かつ高温においてNa2O−CaO−P2O5系結合を形
成し、熱間強度、耐食性等に極めて優れている性
質を見出し本発明を完成するに至つたものであ
る。本発明は塩基性耐火骨材100重量部にバイン
ダーとして炭酸カルシウム１〜15重量部、増粘剤
としてPH６〜７を示すナトリウム系リン酸塩0.1
〜３重量部、硬化遅延剤としてPH７以上を示すナ
トリウム系リン酸塩0.1〜１重量部および常温水
に難溶性でかつ熱湯で溶解するナトリウム系リン
酸塩１〜５重量部からなることを特徴とする塩基
性圧入材である。
以下この発明の成分構成について説明する。こ
の本発明に使用される塩基性耐火骨材としてはマ
グネシアクリンカーを主体としたもので、他にク
ロム鉱、スピネル、アルミナ、カーボン等の耐火
骨材をも粒度調整して使用され得る。本発明に使
用されるバインダーの炭酸カルシウムは常温では
リン酸ナトリウム塩と反応をおこさず、高温にお
いて反応し熱間強度を向上させるものであり、均
一分散できるよう微粉として使用し74μ以下の微
粉を使用することが好ましい。炭酸カルシウムの
添加量は塩基性耐火骨材100重量部に対し１〜15
重量部が好ましく１重量部未満では十分な熱間強
度が得られず、また15重量部以上になると分解時
の炭酸ガス発生量が多くなり塩基性圧入材の組織
が多孔化し、耐用性が低下する。本発明における
バインダーの増粘剤としてはPH６〜７のリン酸塩
例えばトリメタリン酸ナトリウム、ヘキサメタリ
ン酸ナトリウムが使用できる。増粘剤の添加量は
塩基性耐火骨材100重量部に対して0.1〜３重量部
が好ましく、0.1重量部未満では泥漿粘性が小さ
く、また３重量部以上になると粘弾性が失なわれ
通常腰が弱いといわれる状態となり、ホース内で
粗粒が分離し、つまりやすいため好ましくない。
上記増粘剤単独では塩基性耐火骨材との反応に
よつて硬化しやすく圧入施工中に硬化し易いので
硬化遅延剤を使用する。
硬化遅延剤としてはPH７以上のリン酸ナトリウ
ム例えばNa2PO4、Na2HPO4、トリポリリン酸
ナトリウム、テトラポリリン酸ナトリウム等が使
用できる。硬化遅延剤の添加量は塩基性耐火骨材
100重量部に対し0.1〜１重量部が好ましい。0.1
重量部未満では硬化遅延効果が得られない。また
１重量以上は泥漿の粘弾性が失われ、ホース内で
粗粒が分離しつまりやすくなる。
増粘剤と硬化遅延剤によつて適度の粘弾性が得
られた泥漿は圧入施工中の圧送性、展開性は得ら
れるがさらに接着性および熱間強度を向上させる
ために常温水に対し難溶性でかつ熱湯で溶解する
リン酸塩を使用することが望ましい。すなわち圧
入施工中は好ましい泥漿粘性を阻害することな
く、圧入展開後は炉内温度によつて加熱された泥
漿の中で急速に溶解し、接着強度および熱間強度
を向上させるものである。
常温水に対して難溶性であるが熱湯で溶解する
例えば溶解度が20℃で１重量％以下、50℃で５重
量％以下、80℃の熱湯で30重量％以上を有するリ
ン酸塩が好ましい。水に難溶性でかつ熱湯に溶解
するリン酸塩としてはグラハム塩等のナトリウム
系リン酸塩または少量のSiO2、Al2O3、K2O等を
含有するリン酸ナトリウム塩が使用できる。
水に難溶性でかつ熱湯に溶解するリン酸塩の添
加量は塩基性耐火骨材100重量部に対し１〜５重
量部が好ましい。１重量部未満では十分な接着強
度および熱間強度が得られる。また５重量部以上
になると塩基性圧入材中のリン酸塩量が過多とな
り熱間強度は低下する。
塩基性圧入材は予め粒度調整された塩基性耐火
骨材に炭酸カルシウムおよび上記の如く調整され
たバインダーを加え10〜15重量部の水分を添加
し、通常の混練機により容易に製造される。
つぎに本発明を実施例を挙げて具体的に説明す
る。
実施例
表１に塩基性圧入材の配合例を示す。珪酸ソー
ダやアルミナセメントを用いた塩基性圧入材は圧
送性が悪くかつ熱間強度が弱く、RHやDH等の
スノーケル内壁の溶鋼による摩耗の大きな所では
使用に耐えない。これに対しリン酸塩を結合剤と
したものは熱間強度が高くなるが本発明の範囲外
のリン酸塩の使用では泥漿の腰が弱く圧送時ホー
ス内の詰まりとなつて圧入材の第一歩である作業
性に難点があり好ましくない。
本発明の圧入材は圧送性、展開性、接着性、熱
間強度、耐食性にすぐれている。
実炉テストの結果も従来品のアルミナ系圧入
材と施工性の面で遜色はなく耐用性の面で格段に
すぐれていることが判明した。
【表】DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a basic press-fitting material for hot press-fitting repair of damaged parts of steel manufacturing containers. Recently, as steel grades have become higher grade, vacuum degassing equipment such as RH and DH has been installed at each steelworks and has become widespread. The snorkel part of degassing equipment such as RH and DH that comes into contact with molten steel is severely damaged, and repairs are being carried out using basic hot spraying material or alumina-based hot press-in material, but the construction method and durability are limited. The current situation is that we have not reached the point where we should be satisfied with this aspect. In other words, basic hot-sprayed materials tend to have a porous structure because they have a large rebound loss and a large amount of added water. 2. Sprayed materials tend to accumulate in layers and easily peel off from the layers. 3. Disadvantages include low adhesive strength and easy peeling from the adhesive surface during use, and the current state is that basic materials do not have the inherent durability. Press-in repair is a method in which the materials are mixed with an appropriate amount of water, then pumped through a 10 to 20 m hose, and then press-fit into a pre-installed steel frame to repair the damaged part of the brick. Press-fit materials have inferior durability compared to basic materials. 2. Melted and suspended alumina grains become hard inclusions in the steel, which is undesirable. Both basic sprayed and alumina press-fit materials are insufficient in terms of durability, and the current situation is that the development of basic press-fit materials is desired from the viewpoint of improving steelmaking capacity and saving energy. . Basic press-fit materials 1) have superior corrosion resistance compared to alumina-based press-fit materials; 2) Since it forms a more uniform and dense structure than sprayed materials, it has excellent corrosion resistance and does not suffer from rebound loss like sprayed materials. However, basic press-in materials harden quickly after being mixed with water, and harden during the press-fitting process, which takes 20 to 30 minutes, making it impossible to press-fit with a pump and making it difficult to set the pot life. 2. Fluidity is high and it is difficult to become viscous. 3. Even with press-fitting, sufficient expandability cannot be obtained. There are technical problems such as these, and in particular, due to the relationship between fluidity and viscosity, it is very difficult to achieve both press-fitting properties and expandability after press-fitting, and it has not been put into practical use. As a result of various studies on effective binders for the basic press-fit material of the present invention, the basic press-fit material contains calcium carbonate as a binder, a thickener, a hardening retardant, and a phosphate such as a hardly soluble sodium phosphate. is extremely stable even during construction after being kneaded with water, and has excellent press-in properties, expandability after press-in, and adhesion to the furnace wall due to the slurry having an appropriate viscoelasticity. They discovered that it forms P 2 O 5 -based bonds and has extremely excellent properties such as hot strength and corrosion resistance, leading to the completion of the present invention. The present invention uses 100 parts by weight of basic refractory aggregate, 1 to 15 parts by weight of calcium carbonate as a binder, and 0.1 parts of sodium phosphate having a pH of 6 to 7 as a thickener.
~3 parts by weight, 0.1 to 1 part by weight of a sodium phosphate having a pH of 7 or higher as a hardening retardant, and 1 to 5 parts by weight of a sodium phosphate that is sparingly soluble in water at room temperature and soluble in hot water. It is a basic press-in material. The component structure of this invention will be explained below. The basic refractory aggregate used in the present invention is mainly composed of magnesia clinker, but other refractory aggregates such as chromite, spinel, alumina, and carbon may also be used by adjusting the particle size. Calcium carbonate, the binder used in the present invention, does not react with sodium phosphate at room temperature, but reacts at high temperatures to improve hot strength.It is used as a fine powder to ensure uniform dispersion, with a particle size of 74μ or less. It is preferable to use The amount of calcium carbonate added is 1 to 15 parts by weight per 100 parts by weight of basic fire-resistant aggregate.
If it is less than 1 part by weight, sufficient hot strength will not be obtained, and if it exceeds 15 parts by weight, the amount of carbon dioxide gas generated during decomposition will increase, the structure of the basic injection material will become porous, and its durability will decrease. do. As the thickener for the binder in the present invention, phosphates having a pH of 6 to 7, such as sodium trimetaphosphate and sodium hexametaphosphate, can be used. The amount of the thickener added is preferably 0.1 to 3 parts by weight per 100 parts by weight of the basic refractory aggregate; if it is less than 0.1 part by weight, the slurry viscosity will be small, and if it is more than 3 parts by weight, the viscoelasticity will be lost and usually This is not desirable because it causes the hose to be said to be weak, and coarse particles separate inside the hose, making it prone to clogging. If the above-mentioned thickener is used alone, it tends to harden due to reaction with the basic refractory aggregate and hardens during press-fitting, so a hardening retardant is used. As the curing retarder, sodium phosphate having a pH of 7 or higher, such as Na 2 PO 4 , Na 2 HPO 4 , sodium tripolyphosphate, sodium tetrapolyphosphate, etc. can be used. The amount of curing retardant added is based on the basic refractory aggregate.
It is preferably 0.1 to 1 part by weight per 100 parts by weight. 0.1
If it is less than 1 part by weight, no curing retardation effect can be obtained. Moreover, if the weight exceeds 1 weight, the viscoelasticity of the slurry is lost, and coarse particles tend to separate and clog inside the hose. The slurry has a suitable viscoelasticity due to the thickener and hardening retardant, so it can be pumped and spreadable during press-in construction, but it is difficult to resist water at room temperature in order to improve adhesiveness and hot strength. It is desirable to use phosphates that are soluble and dissolve in hot water. That is, during press-fitting, the desired slurry viscosity is not impaired, and after press-fitting and development, it rapidly dissolves in the slurry heated by the furnace temperature, improving adhesive strength and hot strength. Phosphates that are sparingly soluble in room temperature water but soluble in hot water, for example, have a solubility of 1% by weight or less at 20°C, 5% by weight or less at 50°C, and 30% by weight or more in hot water at 80°C. As the phosphate that is sparingly soluble in water and soluble in hot water, sodium phosphates such as Graham's salt or sodium phosphate salts containing a small amount of SiO 2 , Al 2 O 3 , K 2 O, etc. can be used. The amount of the phosphate salt, which is sparingly soluble in water and soluble in hot water, is preferably 1 to 5 parts by weight per 100 parts by weight of the basic refractory aggregate. If the amount is less than 1 part by weight, sufficient adhesive strength and hot strength can be obtained. Moreover, if it exceeds 5 parts by weight, the amount of phosphate in the basic injection material becomes excessive and the hot strength decreases. The basic injection material is easily produced by adding calcium carbonate and the binder adjusted as described above to basic refractory aggregate whose particle size has been adjusted in advance, and adding 10 to 15 parts by weight of water, using a conventional kneading machine. Next, the present invention will be specifically explained with reference to Examples. Examples Table 1 shows blending examples of basic injection materials. Basic injection materials using sodium silicate or alumina cement have poor pumpability and low hot strength, and cannot be used in areas where the inner wall of the snorkel is subject to significant wear due to molten steel, such as RH and DH. On the other hand, when phosphate is used as a binder, the hot strength is high, but when phosphate is used outside the scope of the present invention, the stiffness of the slurry is weak and the hose becomes clogged during pumping, resulting in the intrusion material becoming clogged. First, there is a problem with workability, which is undesirable. The press-fitting material of the present invention has excellent pressability, expandability, adhesiveness, hot strength, and corrosion resistance. The results of actual furnace tests revealed that the workability was comparable to conventional alumina-based press-in materials, and it was significantly superior in terms of durability. 【table】
Claims (1)
て炭酸カルシウム１〜15重量部、増粘剤としてPH
６〜７を示すナトリウム系リン酸塩0.1〜３重量
部、硬化遅延剤としてPH７以上を示すナトリウム
系リン酸塩0.1〜１重量部および常温水に難溶性
でかつ熱湯で溶解するナトリウム系リン酸塩１〜
５重量部からなることを特徴とする塩基性圧入
材。1 100 parts by weight of basic refractory aggregate, 1 to 15 parts by weight of calcium carbonate as a binder, and PH as a thickener.
0.1 to 3 parts by weight of a sodium phosphate having a pH of 6 to 7, 0.1 to 1 part by weight of a sodium phosphate having a pH of 7 or higher as a hardening retardant, and sodium phosphoric acid that is sparingly soluble in water at room temperature and soluble in boiling water. 1~ salt
A basic press-fitting material comprising 5 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56200031A JPS58104071A (en) | 1981-12-14 | 1981-12-14 | Basic press injecting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56200031A JPS58104071A (en) | 1981-12-14 | 1981-12-14 | Basic press injecting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58104071A JPS58104071A (en) | 1983-06-21 |
| JPS6356190B2 true JPS6356190B2 (en) | 1988-11-07 |
Family
ID=16417663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56200031A Granted JPS58104071A (en) | 1981-12-14 | 1981-12-14 | Basic press injecting material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58104071A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61291465A (en) * | 1985-06-18 | 1986-12-22 | 品川白煉瓦株式会社 | Monolithic refractory composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543821A (en) * | 1977-06-13 | 1979-01-12 | Harima Refractories Co Ltd | Castable refractory material |
| JPS56104781A (en) * | 1980-01-21 | 1981-08-20 | Shinagawa Refractories Co | Basic spray refractory composition |
-
1981
- 1981-12-14 JP JP56200031A patent/JPS58104071A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543821A (en) * | 1977-06-13 | 1979-01-12 | Harima Refractories Co Ltd | Castable refractory material |
| JPS56104781A (en) * | 1980-01-21 | 1981-08-20 | Shinagawa Refractories Co | Basic spray refractory composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58104071A (en) | 1983-06-21 |
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