JPH03174368A - Alumina/spinal-based casting material - Google Patents
Alumina/spinal-based casting materialInfo
- Publication number
- JPH03174368A JPH03174368A JP1308961A JP30896189A JPH03174368A JP H03174368 A JPH03174368 A JP H03174368A JP 1308961 A JP1308961 A JP 1308961A JP 30896189 A JP30896189 A JP 30896189A JP H03174368 A JPH03174368 A JP H03174368A
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- raw material
- spinal
- spinel
- particle diameter
- 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 title abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims abstract description 6
- 239000011029 spinel Substances 0.000 claims description 24
- 229910052596 spinel Inorganic materials 0.000 claims description 24
- 238000004901 spalling Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 238000011068 loading method Methods 0.000 abstract 3
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 13
- 239000002893 slag Substances 0.000 description 11
- 239000000395 magnesium oxide Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N Al2O Inorganic materials [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- UAMZXLIURMNTHD-UHFFFAOYSA-N dialuminum;magnesium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Mg+2].[Al+3].[Al+3] UAMZXLIURMNTHD-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は耐久ポーリング性に優れたアルミナ・スピネル
質流し込み材に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an alumina-spinel casting material with excellent durable poling properties.
［従来の技術］
近年、製鋼プロセスの多様化、すなわち（１）連鋳比率
の上昇及び脱ガス比率の増加、（２）取鍋精錬の導入、
及び（３〉溶鋼輸送に伴う出鋼温度の上昇、溶鋼の滞留
時間の延長、溶＃Ｉ４撹拌等により取鍋内張り耐火物は
苛酷な使用条件となってきた。[Prior art] In recent years, steelmaking processes have diversified, namely (1) an increase in the continuous casting ratio and an increase in the degassing ratio, (2) the introduction of ladle refining,
and (3) The refractory lining of the ladle has been subjected to severe usage conditions due to the rise in tapping temperature associated with the transportation of molten steel, the extension of the residence time of molten steel, and the stirring of molten steel #I4.
従来、取鍋用内張り耐火物は、ロー石、ジルコン質が主
体であったが、上記製鋼プロセスの多様化に加え、高級
鋼の要求が強く、Ｓ ｉ Ｏ２の少ない耐火物としてハ
イアルミナ質が使用されている。Traditionally, ladle lining refractories were mainly made of lowite or zircon materials, but in addition to the diversification of the steelmaking process mentioned above, there is a strong demand for high-grade steel, and high alumina materials are being used as refractories with low SiO2 content. It is used.
また、一部にマグネシア質等の塩基性材質が検討されて
いるが、熱的スポーリング及び構造的スポーリングによ
る亀裂・剥離が多く、実用化に至っていない。In addition, basic materials such as magnesia are being considered in some cases, but they have not been put to practical use because they often cause cracks and peeling due to thermal spalling and structural spalling.
［発明が解決しようとする課題］
ハイアルミナ質はロー石、ジルコン質に比べ、■スラグ
浸潤が大きい、■耐スポーリング性に劣る等の欠点があ
る。[Problems to be Solved by the Invention] Compared to lowite and zircon materials, high alumina materials have drawbacks such as (1) large slag infiltration and (2) poor spalling resistance.
ハイアルミナ質のスラグ浸潤を抑制する方法としては、
ＭｇＯ・Ａ ｌ ＊ ０３系スピネル及びマグネシアを
組み合わせたアルミナ・スピネル系、アルミナ・スピネ
ル・マグネシア系あるいはアルミナ・マグネシア系流し
込み材が特開昭５５−２３００４号公報、特開昭５９−
１２８７２７１号公報、特開昭５９−１２８２７２号公
報、特公昭６０−６０９８５号公報及び特公昭６４−８
７５７７号公報に提案されている。As a method of suppressing high alumina slag infiltration,
Alumina-spinel-based, alumina-spinel-magnesia-based or alumina-magnesia-based pouring materials that combine MgO・Al*03 spinel and magnesia are disclosed in JP-A-55-23004 and JP-A-59-
1287271, JP 59-128272, JP 60-60985, and JP 64-8
This is proposed in Publication No. 7577.
しかし、これらの材料は、その目的であるスラグ浸潤抑
制による構造的スポーリング、耐食性についてはスピネ
ルあるいはマグネシアの添加により格段に向上すること
が判明しているが、末だスポーリング性については充分
とは言えない。However, although it has been found that the structural spalling and corrosion resistance of these materials by suppressing slag infiltration, which is the purpose of these materials, can be significantly improved by adding spinel or magnesia, the spalling resistance is still insufficient. I can't say that.
このため、より耐スポーリング性に優れたハイアルミナ
質材料の開発が望まれている。Therefore, it is desired to develop a high alumina material with better spalling resistance.
［課題を解決するための手段コ
本発明者らは、アルミナ・スピネル質流し込み材の耐ス
ポーリング性を向上させるために鋭意研究を重ねた結果
、本発明を完成するに至った。[Means for Solving the Problems] The present inventors have completed the present invention as a result of intensive research to improve the spalling resistance of alumina spinel cast material.
即ち、本発明はアルミナ原料１０〜８２重量％、粒径０
．３論−以上のＭｇＯ−Ａｌ２Ｏ：＋系スピネル原料１
０〜７０重量％及びアルミナセメント８〜２０重量より
なる混合物に、粒径１０〜５０間のアルミナ質破砕粒を
外掛で１０〜４０重量％含有してなることを特徴とする
アルミナ・スピネル質流し込み材に係る。That is, in the present invention, the alumina raw material is 10 to 82% by weight and the particle size is 0.
．． Theory 3 - Above MgO-Al2O:+ spinel raw material 1
An alumina-spinel casting characterized by containing 10 to 40% by weight of crushed alumina grains having a particle size of 10 to 50 in a mixture consisting of 0 to 70% by weight of alumina cement and 8 to 20% by weight of alumina cement. Related to materials.
［作 用］
本発明で使用するスピネル原料は一種以上の電融スピネ
ルクリンカ−及び焼結スピネルクリンカ−であり、Ｍｇ
Ｏ，ＡｂＯｓの組成は理論組成のものが望ましい。[Function] The spinel raw materials used in the present invention are one or more types of fused spinel clinker and sintered spinel clinker, and include Mg
The composition of O and AbOs is preferably a theoretical composition.
該スピネル原料の粒径は０．３ｍｍ以上のものが望まし
い０本発明者らの行った実験によるとスピネルクリンカ
−微粉（０，３ｍｍ以下）を添加すると、流し込み材の
施工体を１６００℃に加熱した後の線変化率は収縮傾向
となり、また、加熱後の圧縮強さ比も大きくなり、この
結果、加熱面側と非加熱面側の組織が不均一となり、加
熱面側に形成された緻密層の背部での亀裂、剥離の原因
となる。The particle size of the spinel raw material is preferably 0.3 mm or more. According to experiments conducted by the present inventors, when spinel clinker fine powder (0.3 mm or less) is added, the cast material is heated to 1600°C. The rate of linear change after heating tends to shrink, and the compressive strength ratio after heating also increases.As a result, the structure on the heated side and non-heated side becomes uneven, and the dense structure formed on the heated side This can cause cracks and peeling at the back of the layer.
また、耐スラグ性はスピネルクリンカ−添加量と共に良
好となるが、スピネルクリンカ−７０重量％以上では粒
度構成の点でスピネルクリンカ−を微粉で添加すること
になる。このことは上述の組織の不均一の起こす原因と
なるので、スピネルクリンカ−の添加量としては１０〜
７０重量％が望ましい。Further, the slag resistance becomes better as the amount of spinel clinker added increases, but if the amount of spinel clinker is 70% by weight or more, the spinel clinker must be added in the form of fine powder in terms of particle size structure. This causes the above-mentioned non-uniform structure, so the amount of spinel clinker added should be 10 to 10.
70% by weight is desirable.
一方、アルミナ原料については、焼結アルミナ、電融ア
ルミナ、ボーキサイト及びパン土頁岩等のうちの一種以
上が使用できる。しかし、５ｉｎ２の増加は低融性物質
の生成原因となるため焼結アルミナ、電融アルミナが望
ましい、ボーキサイト、パン土頁岩等については、粗粒
〈３開以上）での添加が望ましい、添加量については１
０〜８２重量％である。On the other hand, as for the alumina raw material, one or more of sintered alumina, fused alumina, bauxite, pansoil shale, etc. can be used. However, an increase in 5in2 causes the formation of low-melting substances, so sintered alumina and fused alumina are preferable. For bauxite, pansoil shale, etc., it is preferable to add coarse particles (3 in. or more). Addition amount About 1
It is 0 to 82% by weight.
アルミナセメントは従来よりキャスタブルに使用される
ものであり、本発明においては結合剤及びスラグ浸潤抑
制を目的に使用される。添加量としては８〜２０重量％
が望ましい、すなわち、８重量％未満では強度が不充分
であり、且つスラグ浸潤抑制効果も少ない、また、２０
重量％を越えると低融物の生成量が多くなり、耐食性が
低下する。Alumina cement has conventionally been used for castables, and in the present invention, it is used as a binder and for the purpose of suppressing slag infiltration. The amount added is 8-20% by weight.
In other words, if it is less than 8% by weight, the strength is insufficient and the effect of suppressing slag infiltration is also small.
If the content exceeds % by weight, the amount of low-melting substances produced increases and corrosion resistance deteriorates.
以上、スピネル原料、アルミナ原料及びアルミナセメン
トよりなる配合物は、スラグ浸潤が少なく、加熱面側と
非加熱面側の組成の均一性が図られた耐スポール性に優
れた流し込み材である。しかし、スピネル原料、アルミ
ナ原料は１％膨張率が高く、弾性率も高いため、ロー石
、ジルコン質に比べ朱だ耐スポーリング性に劣る。As described above, the mixture consisting of the spinel raw material, the alumina raw material, and the alumina cement is a pouring material with excellent spalling resistance, with little slag infiltration, and with uniform composition on the heated and non-heated surfaces. However, since spinel raw materials and alumina raw materials have a high 1% expansion rate and high elastic modulus, they are inferior in vermilion spalling resistance compared to loite and zircon materials.
そこで、本発明者らは、上記配合物にアルミナ質破砕粒
を添加することにより亀裂の伸張を抑制することで本発
明品を得た。ここで、アルミナ質破砕粒は電磁アルミナ
、パン土頁岩、アルミナ質れんが等より選ばれた一種以
上の粒径１０〜５０−のフレット及びインペラー粉砕機
等で粉砕された破砕粒が望ましい、すなわち、粒径ｌ１
０ｌ１１以下のものでは亀裂抑制効果が少なく、５０ｍ
ｍを超えると施工性が低下する。Therefore, the present inventors obtained the product of the present invention by adding crushed alumina particles to the above-mentioned mixture to suppress the extension of cracks. Here, the alumina crushed grains are preferably crushed grains of one or more selected from electromagnetic alumina, pansoil shale, alumina brick, etc., with a particle size of 10 to 50 and crushed by a fret and impeller crusher, etc., that is, Particle size l1
If it is less than 0l11, the crack suppression effect is small, and the
If it exceeds m, workability deteriorates.
焼結アルミナ及びスピネル等の球状粒、ペレット粒もあ
るが、これらはマトリックス部との接着性が悪く、亀裂
抑制効果が少ない。There are also spherical particles and pellet particles such as sintered alumina and spinel, but these have poor adhesion to the matrix and have little crack suppression effect.
アルミナ質原料破砕粒の添加量としては、上記配合物に
対して外掛で１０〜４０重量％が望ましい、すなわち、
１００重量％未満はスポーリングによる亀裂抑制効果が
少なく、４０重量％を超えると施工性が低下する。The amount of crushed alumina raw material to be added is preferably 10 to 40% by weight based on the above formulation, that is,
If it is less than 100% by weight, the effect of suppressing cracks due to spalling will be small, and if it exceeds 40% by weight, workability will deteriorate.
本発明の流し込み材は上記原料を単に混合すれば作製す
ることができる。The pouring material of the present invention can be produced by simply mixing the above raw materials.
［実 施 例Ｊ
以下に実施例を挙げて本発明の流し込み材を更に説明す
る。[Example J] The pouring material of the present invention will be further explained with reference to Examples below.
なお、第１表には実施例に使用した原料の化学成分を、
第２表には本発明の実施例を比較例と比較して示す、第
２表に示す各配合物は所定の水を添加して混練した後、
金枠に流込み底形し、２０℃で２４時間養生し、１０５
℃で２４時間乾燥後、以下に示す各試験に供した。Table 1 shows the chemical components of the raw materials used in the examples.
Table 2 shows examples of the present invention in comparison with comparative examples. Each of the formulations shown in Table 2 was prepared by adding a predetermined amount of water and kneading.
Pour into a metal frame, shape the bottom, cure at 20℃ for 24 hours,
After drying at ℃ for 24 hours, it was subjected to each test shown below.
〈１〉加熱後線変化率（１６００℃−３時間） ： Ｊ
ＩＳ Ｒ２５５５（２）加熱後圧縮強さ（１０００℃−
３時間、１ａｏｏ℃−３時間） ： ＪＩＳ Ｒ２５５
３
（３）侵食試験
■装Ｗ：回転ドラム侵食試験装置
■試料形状： ５０Ｘ２００Ｘ６５鶴−■温度・時間＋
１６５０℃−３０分間スラグ投入１５分↑ １２０分
８００℃
３サイクル
１６５０℃−３０分間
１５分↑ １２０分
８００℃
３サイクル
■スラグ：転炉スラグ（Ｃａｂ／ ５ｉＯｚ＝ ３．６
５）１．２ｋｇ／サイクル
［発明の効果］
本発明の流し込み材は従来のハイアルミナ質、アルミナ
・スピネル質、アルミナ・スピネル・マグネシア質及び
アルミナ・マグネシア質に比べＭｇ０−ｋｌｘｏｓ系ス
ピネル原料の添加量及び粒度の選定、及びアルミナ質破
砕粒の使用により耐食性及び耐スラグ性のみならず、高
温での収縮抑制及び加熱面側と非加熱面側の組織の均一
化が図られることにより耐スポーリング性に優れている
。<1> Linear change rate after heating (1600°C-3 hours): J
IS R2555 (2) Compressive strength after heating (1000℃-
3 hours, 1aoo℃-3 hours): JIS R255
3 (3) Erosion test ■ Equipment W: Rotating drum erosion test device ■ Sample shape: 50 x 200 x 65 crane - ■ Temperature/time +
1650℃ - 30 minutes Slag input 15 minutes ↑ 120 minutes 800℃ 3 cycles 1650℃ - 30 minutes 15 minutes ↑ 120 minutes 800℃ 3 cycles ■Slag: Converter slag (Cab/5iOz = 3.6
5) 1.2 kg/cycle [Effect of the invention] The casting material of the present invention has the advantage of adding Mg0-klxos spinel raw material compared to conventional high alumina, alumina/spinel, alumina/spinel/magnesia, and alumina/magnesia. By selecting the amount and particle size, and using crushed alumina particles, it not only provides corrosion resistance and slag resistance, but also suppresses shrinkage at high temperatures and makes the structure uniform on the heated and non-heated surfaces, resulting in anti-spalling properties. Excellent in sex.
従って、最近の製鋼プロセスの多様化、高級鋼の要求に
対し、本発明の流し込み材は亀裂、剥離が少なく、安定
した高耐用性が得られる材質である。Therefore, in response to the recent diversification of steel manufacturing processes and the demand for high-grade steel, the cast material of the present invention is a material that is less prone to cracking and peeling and provides stable and high durability.
Claims (1)
ＭｇＯ・Ａｌ＿２Ｏ＿３系スピネル原料１０〜７０重量
％及びアルミナセメント８〜２０重量よりなる混合物に
、粒径１０〜５０ｍｍのアルミナ質破砕粒を外掛で１０
〜４０重量％含有してなることを特徴とするアルミナ・
スピネル質流し込み材。Crushed alumina particles with a particle size of 10 to 50 mm are added to a mixture of 10 to 82 weight percent of alumina raw material, 10 to 70 weight percent of MgO・Al_2O_3 spinel raw material with a particle size of 0.3 mm or more, and 8 to 20 weight of alumina cement. So 10
Alumina containing ~40% by weight
Spinel pouring material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1308961A JPH0633180B2 (en) | 1989-11-30 | 1989-11-30 | Alumina-spinel casting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1308961A JPH0633180B2 (en) | 1989-11-30 | 1989-11-30 | Alumina-spinel casting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03174368A true JPH03174368A (en) | 1991-07-29 |
| JPH0633180B2 JPH0633180B2 (en) | 1994-05-02 |
Family
ID=17987323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1308961A Expired - Fee Related JPH0633180B2 (en) | 1989-11-30 | 1989-11-30 | Alumina-spinel casting material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633180B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4325208C2 (en) * | 1992-08-24 | 2000-10-26 | Nippon Steel Corp | Fireproof cast material |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517163A (en) * | 1974-06-17 | 1976-01-21 | Frymaster Corp | Shokuryohinfuraiagesochono seigyosochioyobi taikoshoanzenkairo |
| JPS534022A (en) * | 1976-07-02 | 1978-01-14 | Harima Refractories Co Ltd | Refractories for blast furnace exit conduits |
| JPS5523004A (en) * | 1978-08-02 | 1980-02-19 | Towa Taika Kogyo Kk | Spinel castable refractories |
| JPS6060985A (en) * | 1983-09-08 | 1985-04-08 | 新日本製鐵株式会社 | Refractory composition for ladle lining |
| JPS61215268A (en) * | 1985-03-18 | 1986-09-25 | 川崎製鉄株式会社 | Monolithic refractories for molten metal vessel |
| JPS6241771A (en) * | 1985-08-14 | 1987-02-23 | 川崎製鉄株式会社 | Prevention of crack and spalling of monolithic refractories |
| JPS6487577A (en) * | 1987-08-29 | 1989-03-31 | Harima Ceramic Co Ltd | Monolithic alumina-spinel refractory |
| JPH026373A (en) * | 1988-06-24 | 1990-01-10 | Kawasaki Refract Co Ltd | Cast amorphous refractory |
-
1989
- 1989-11-30 JP JP1308961A patent/JPH0633180B2/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517163A (en) * | 1974-06-17 | 1976-01-21 | Frymaster Corp | Shokuryohinfuraiagesochono seigyosochioyobi taikoshoanzenkairo |
| JPS534022A (en) * | 1976-07-02 | 1978-01-14 | Harima Refractories Co Ltd | Refractories for blast furnace exit conduits |
| JPS5523004A (en) * | 1978-08-02 | 1980-02-19 | Towa Taika Kogyo Kk | Spinel castable refractories |
| JPS6060985A (en) * | 1983-09-08 | 1985-04-08 | 新日本製鐵株式会社 | Refractory composition for ladle lining |
| JPS61215268A (en) * | 1985-03-18 | 1986-09-25 | 川崎製鉄株式会社 | Monolithic refractories for molten metal vessel |
| JPS6241771A (en) * | 1985-08-14 | 1987-02-23 | 川崎製鉄株式会社 | Prevention of crack and spalling of monolithic refractories |
| JPS6487577A (en) * | 1987-08-29 | 1989-03-31 | Harima Ceramic Co Ltd | Monolithic alumina-spinel refractory |
| JPH026373A (en) * | 1988-06-24 | 1990-01-10 | Kawasaki Refract Co Ltd | Cast amorphous refractory |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4325208C2 (en) * | 1992-08-24 | 2000-10-26 | Nippon Steel Corp | Fireproof cast material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633180B2 (en) | 1994-05-02 |
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