JPS6060985A - Refractory composition for ladle lining - Google Patents
Refractory composition for ladle liningInfo
- Publication number
- JPS6060985A JPS6060985A JP58166195A JP16619583A JPS6060985A JP S6060985 A JPS6060985 A JP S6060985A JP 58166195 A JP58166195 A JP 58166195A JP 16619583 A JP16619583 A JP 16619583A JP S6060985 A JPS6060985 A JP S6060985A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- alumina cement
- alumina
- present
- 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】
〔技術分野〕
本発明は耐食性、耐スポーリング性および容積安定性に
すぐれた取鍋内張り用不定形耐火組成物に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a monolithic refractory composition for lining a ladle which has excellent corrosion resistance, spalling resistance and volume stability.
近年、取鍋内張りは省エネルギー、省力化の観点から、
逐次、不定形化が進められており、これまで珪石質、ロ
ウ石質、シャモント質、ロウ石−ジルコン質、珪石−ジ
ルコン質、高アルミナ質など、種々の材質が使用されて
きた。しかしながら、製鋼技術の進歩は真空脱ガス処理
などによる取鍋内張り溶鋼温度の上昇、滞留時間の延長
等を来たし、取鍋内張り耐火物はまずまず苛酷な条件に
さらされるようになってきた。In recent years, ladle lining has been improved from the viewpoint of energy saving and labor saving.
Progress has been made to make them into amorphous shapes, and various materials have been used so far, including silica, pyrite, chamont, pyrite-zircon, silica-zircon, and high alumina. However, advances in steelmaking technology have led to increases in the temperature of the molten steel lining the ladle and extension of residence time due to vacuum degassing treatments, etc., and the refractory lining of the ladle has come to be exposed to more or less severe conditions.
このため、従来の材質では取鍋の寿命の低下が著しく、
これらの苛酷な条件に適応する祠料の開発が望まれてい
た。For this reason, the life of the ladle is significantly reduced when using conventional materials.
It has been desired to develop an abrasive material that can withstand these harsh conditions.
このような要請に対し、過去、マグネシアなどの塩基性
材質が検討されてはきたが、ＭｇＯクリンカーに起因し
て耐スポーリング性が小さく、又、スラグ浸潤が大きく
、それによって亀裂、剥離が誘発されるなどの致命的欠
陥を有しており、実用化をみるに至っていない。In response to these demands, basic materials such as magnesia have been considered in the past, but they have low spalling resistance due to MgO clinker and large slag infiltration, which can lead to cracking and peeling. However, it has fatal flaws such as the fact that it is difficult to use, so it has not been put into practical use.
本発明は、作業性、耐亀裂性、耐スポーリング性を改良
してスピネル質耐火祠の苛酷な条件の下での耐用性の改
善を図り取鍋内張りへの適用を可能にしたものである。The present invention aims to improve the durability of spinel refractories under harsh conditions by improving workability, crack resistance, and spalling resistance, thereby making it possible to apply them to ladle linings. .
本発明に係る取鍋内張り用不定形耐火組成物はスピネル
クリンカ−６０重量部以上と、アルミナクリンカー１０
〜３５重量部と、アルミナセメント３〜１０重量部より
構成されている。The monolithic refractory composition for ladle lining according to the present invention contains 60 parts by weight or more of spinel clinker and 10 parts by weight of alumina clinker.
~35 parts by weight and 3 to 10 parts by weight of alumina cement.
本発明の特徴の第一は、スピネルクリンカ−の有する特
性、例えば熱膨張係数が小さいことや、スラグ浸透抵抗
性の大きいことなどを有効に利用したものであり、熱的
スポーリング性やスラグ浸透に起因する亀裂、剥離の抑
制に有効に寄与するものである。The first feature of the present invention is that it effectively utilizes the properties of spinel clinker, such as its low coefficient of thermal expansion and high resistance to slag penetration. This effectively contributes to suppressing cracks and peeling caused by.
本発明に使用するスピネルクリンカ−はＭｇＯ。The spinel linker used in the present invention is MgO.
ＡＱ２０ｚとして８５重量部以上含有していること必要
であり、９０重量部以上含まれていることが望ましい。It is necessary to contain 85 parts by weight or more as AQ20z, and preferably 90 parts by weight or more.
そして、スピネルクリンカ−の含有量は少なくとも６０
重量部である必要があり、６０重量部に満たない場合、
スピネルクリンカ−の特性が十分に発揮されない。and the spinel clinker content is at least 60
If it is less than 60 parts by weight,
The characteristics of spinel clinker are not fully exhibited.
本発明の特徴の第二は、低ＣａＯアルミナセメントを結
合剤として使用し、さらに容積安定性の向上を図るため
、アルミナセメントーの粉末を添加した点にある。The second feature of the present invention is that low CaO alumina cement is used as a binder, and alumina cement powder is added in order to further improve volumetric stability.
アルミナセメントは、主として、ＣａＯとＭ２Ｏ３より
構成され、ＣａＯ量は１０〜５０重量％と広範囲に亙っ
ている。このようなアルミナセメントのスピネルに対す
る鉱物学的反応上の特徴は、ＭｇＯ−ＣａＯ−Ｍ２Ｏ３
系状態図から明らかなようにＣａＯｉｆが多いほど、Ｃ
ａ０−ＡＱ２０３．１２Ｃａ０ ・７ＡＱ２０３等の低
融点成分が形成されることである。Alumina cement is mainly composed of CaO and M2O3, and the amount of CaO ranges over a wide range from 10 to 50% by weight. The mineralogical reaction characteristics of such alumina cement to spinel are MgO-CaO-M2O3
As is clear from the system phase diagram, the more CaOif, the more C
A low melting point component such as a0-AQ203.12Ca0.7AQ203 is formed.
このことは、スピネル素材を結合するアルミナセメント
とじては、Ｃａ０ｔｔがより少ないことが望ましいこと
を示している。゛具体的にはＣａＯ量は２５重量部以下
がよく、このようなアルミナセメントとじては高アルミ
ナセメント、スーパー高アルミナセメントなどがある。This indicates that it is desirable for the alumina cement that binds the spinel material to have a lower Ca0tt content. ``Specifically, the amount of CaO is preferably 25 parts by weight or less, and examples of such alumina cement include high alumina cement and super high alumina cement.
又、アルミナ七メント以外にも、例えば珪酸ソーダ、珪
酸カリ、シリカゾル、リン酸、第１リン酸アルミ、リン
酸ソーダなど種々の結合剤があるが、これらはいずれも
Ｍｇ０Ｍ２０ｘ ５ｉ０２系、 ＭｇＯ−ＡＱ２０３−
３ｉＯｚ−Ｎａ２０系ｌＭｇＯＡＱ２０３ Ｐ２０ｃ、
系、 Ｍｇ０ＡＱ２０３−Ｐ２０５−Ｎａ２０系の低融
点物質を形成するため好ましくない。In addition to alumina heptament, there are various other binders such as sodium silicate, potassium silicate, silica sol, phosphoric acid, primary aluminum phosphate, and sodium phosphate, all of which are Mg0M20x 5i02 series, MgO-AQ203 −
3iOz-Na20 series lMgOAQ203 P20c,
This is not preferred because it forms a low melting point substance of the Mg0AQ203-P205-Na20 system.
本発明中でのアルミナセメントの添加量を３〜１０重量
部に限定した理由は、３重量部未満では強度が小さくポ
ンドとしての機能を発揮せず、又１０重量部を超えると
、耐食性及び容積安定性が低下するためである。The reason why the amount of alumina cement added in the present invention is limited to 3 to 10 parts by weight is that if it is less than 3 parts by weight, the strength will be low and it will not function as a pound, and if it exceeds 10 parts by weight, corrosion resistance and volume This is because stability decreases.
又本発明でアルミナセメントーを使用する目的は容積安
定性の向上にある。スピネルクリンカ−にアルミナセメ
ントを配合しただけでは高温度処理後、例えば１５００
℃で３時間加熱した後収縮傾向を示し、構造体として好
ましくない。Further, the purpose of using alumina cement in the present invention is to improve volumetric stability. If only alumina cement is mixed with spinel clinker, after high temperature treatment, e.g.
It shows a tendency to shrink after being heated at ℃ for 3 hours, making it undesirable as a structure.
収縮の原因は主として、アルミナセメントから来るもの
であり、セメント中の鉱物組成が一つの有力な要因と推
定される。The cause of the shrinkage is mainly due to the alumina cement, and the mineral composition in the cement is presumed to be one of the major factors.
この観点から、種々、検討を行なった結果、アルミナセ
メンカー粉末を配合することによって、収縮が改善され
ることが判明した。即ち、本発明に用いられるアルミナ
セメントの構成鉱物はＣａ０・２ＡＱｚＯ３、或いはＣ
ａ０−Ｍ２０３４Ｍ２０３であるが、これにＭ２Ｏ３を
添加することによって、高温度でＣａ０・６Ｍ２０３が
形成され、この時、膨張性を示す。又同時に、より高耐
火性となり、アルミナセメントの耐火性が改善されるこ
とになる。From this point of view, various studies were conducted and it was found that the shrinkage could be improved by blending alumina cementumcor powder. That is, the constituent mineral of the alumina cement used in the present invention is Ca0.2AQzO3 or C
By adding M2O3 to a0-M2034M203, Ca0.6M203 is formed at a high temperature, and at this time it exhibits expandability. At the same time, the alumina cement becomes more fire resistant and the fire resistance of the alumina cement is improved.
本発明において使用するアルミナセメントーの添加量を
１０〜３５重量部に限定した理由は、アルミナタリンカ
ー添加量が１０重量部未満では焼成後の線変化率はプラ
スとはならず、又３５重量部を超えると熱間膨張数が大
きくなり、耐スポーリング性が低下し、又耐食性、耐浸
潤性が低下するノこめである。The reason why the amount of alumina cement used in the present invention is limited to 10 to 35 parts by weight is that if the amount of alumina cement added is less than 10 parts by weight, the linear change rate after firing will not be positive; If it exceeds 100%, the hot expansion number increases, the spalling resistance decreases, and the corrosion resistance and infiltration resistance decrease.
以下、実施例によって本発明の効果を具体的に説明する
。Hereinafter, the effects of the present invention will be specifically explained using Examples.
実施例１
粒度調整したＭｇＯ： Ｍｚ Ｏｘの重量比が２８ ：
７２のスピネルクリンカ−７４重量部に、ＡＱｚＯ３
９８重量部の電融アルミナ微１５） ２０ ｆｆｉ ｆ
ｆｉ部及びＣａＯ１５重量部とＡＱ２０３８４重量部の
アルミナセメント６重量部を配合し、所定量の水を添加
して、十分に混練した後４０ Ｘ ４０ Ｘ １６ｈｍ
の形状に鋳込め成形した。Example 1 Particle size adjusted MgO: MzOx weight ratio is 28:
72 spinel clinker - 74 parts by weight, AQzO3
98 parts by weight of fused alumina fine 15) 20 ffi f
6 parts by weight of alumina cement containing 15 parts by weight of fi, 15 parts by weight of CaO, and 6 parts by weight of AQ20384 were mixed, a predetermined amount of water was added, and the mixture was sufficiently kneaded.
It was cast into the shape of.
２０℃で２４時間養生し、 １１０℃で２４時間乾燥の
後、８００℃で３時間、及び１５００℃で３時間焼成し
た後、品質を測定した。その結果を別表に示す。After curing at 20°C for 24 hours, drying at 110°C for 24 hours, and baking at 800°C for 3 hours and 1500°C for 3 hours, the quality was measured. The results are shown in the attached table.
なお、比較のため、同様にして作製したアルミナ質及び
マグネシア質材料の品質を併記した。比較品１〜３は、
アルミナセメントが本発明の範囲外にあり、同じく比較
品４〜６においては、スピネルクリンカ−の配合量が本
発明の範囲外にあり、同じく比較品７〜８においては、
アルミナセメントーの配合量が本発明の範囲外にある。For comparison, the quality of alumina and magnesia materials produced in the same manner is also shown. Comparative products 1 to 3 are
In Comparative Products 4 to 6, the alumina cement was outside the scope of the present invention, and in Comparative Products 4 to 6, the amount of spinel clinker was outside the scope of the present invention, and in Comparative Products 7 to 8,
The amount of alumina cement added is outside the scope of the present invention.
これから明らかなようにセメントの添加量が３重量部未
満でば強度の低下が大きい一方、１０重量部を超えると
耐食性と容積安定性が大きく低下する。また、マグネシ
ア質材料では耐スポーリング性が劣り、アルミナ質材料
では耐スポーリング性と耐食性において劣ることが判る
。これに対して、本発明は従来のアルミナ質及びマグネ
シア質に比べ、耐久ポーリング性、耐食性、及び容積安
定性においてずぐれた性状を示している。As is clear from this, if the amount of cement added is less than 3 parts by weight, the strength will be greatly reduced, while if it exceeds 10 parts by weight, the corrosion resistance and volume stability will be greatly reduced. It is also found that magnesia materials have poor spalling resistance, and alumina materials have poor spalling resistance and corrosion resistance. On the other hand, the present invention exhibits superior properties in terms of durable poling property, corrosion resistance, and volume stability compared to conventional alumina and magnesia materials.
Claims (1)
アルミナタリン力−を１０〜３５重量部と、アルミナセ
メント３〜１０重量部から成ることを特徴とする取鍋内
張り用不定形耐火組成物。1. At least 60 parts by weight of spinel clinker;
A monolithic refractory composition for lining a ladle, comprising 10 to 35 parts by weight of alumina talin and 3 to 10 parts by weight of alumina cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58166195A JPS6060985A (en) | 1983-09-08 | 1983-09-08 | Refractory composition for ladle lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58166195A JPS6060985A (en) | 1983-09-08 | 1983-09-08 | Refractory composition for ladle lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6060985A true JPS6060985A (en) | 1985-04-08 |
| JPH0348156B2 JPH0348156B2 (en) | 1991-07-23 |
Family
ID=15826845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58166195A Granted JPS6060985A (en) | 1983-09-08 | 1983-09-08 | Refractory composition for ladle lining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6060985A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990475A (en) * | 1987-08-29 | 1991-02-05 | Harima Ceramic Co. Ltd. | Alumina-spinal monolithic refractories |
| JPH03174368A (en) * | 1989-11-30 | 1991-07-29 | Shinagawa Refract Co Ltd | Alumina/spinal-based casting material |
| WO1992018440A1 (en) * | 1991-04-16 | 1992-10-29 | Shinagawa Refractories Co., Ltd. | Unshaped alumina spinel refractory |
| JPH06629A (en) * | 1991-02-20 | 1994-01-11 | Nippon Steel Corp | Hollow fire resistant material for molten metal vessel with induction heating device |
| US5283215A (en) * | 1991-11-26 | 1994-02-01 | Ceramic Co., Ltd. Harima | Refractories for casting process |
| US5681786A (en) * | 1996-10-28 | 1997-10-28 | Krosaki Corporation | Castable refractory rich with alumina coarse grains |
| US5681785A (en) * | 1996-10-28 | 1997-10-28 | Krosaki Corporation | Castable refractory containing alumina coarse grains |
| FR2788762A1 (en) * | 1999-01-26 | 2000-07-28 | Lafarge Aluminates | Clinker-type hydraulic binder for refractory concrete, especially for a steel ladle wear lining, has a high magnesia spinel phase content and a low calcium aluminate phase content |
| JP2002519302A (en) * | 1998-07-06 | 2002-07-02 | シーメンス アクチエンゲゼルシヤフト | Molding material for producing refractory lining and fired molded member, lining, and method for producing molded member |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59128271A (en) * | 1982-12-29 | 1984-07-24 | 株式会社神戸製鋼所 | Flow in material for molten iron desilicating launder |
-
1983
- 1983-09-08 JP JP58166195A patent/JPS6060985A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59128271A (en) * | 1982-12-29 | 1984-07-24 | 株式会社神戸製鋼所 | Flow in material for molten iron desilicating launder |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990475A (en) * | 1987-08-29 | 1991-02-05 | Harima Ceramic Co. Ltd. | Alumina-spinal monolithic refractories |
| JPH03174368A (en) * | 1989-11-30 | 1991-07-29 | Shinagawa Refract Co Ltd | Alumina/spinal-based casting material |
| JPH06629A (en) * | 1991-02-20 | 1994-01-11 | Nippon Steel Corp | Hollow fire resistant material for molten metal vessel with induction heating device |
| US5316571A (en) * | 1991-04-16 | 1994-05-31 | Shinagawa Refractories Co., Ltd. | Alumina-spinel type monolithic refractories |
| EP0535233A1 (en) * | 1991-04-16 | 1993-04-07 | Shinagawa Refractories Co., Ltd. | Unshaped alumina spinel refractory |
| WO1992018440A1 (en) * | 1991-04-16 | 1992-10-29 | Shinagawa Refractories Co., Ltd. | Unshaped alumina spinel refractory |
| EP0535233B1 (en) * | 1991-04-16 | 1995-03-08 | Shinagawa Refractories Co., Ltd. | Unshaped alumina spinel refractory |
| US5283215A (en) * | 1991-11-26 | 1994-02-01 | Ceramic Co., Ltd. Harima | Refractories for casting process |
| US5681786A (en) * | 1996-10-28 | 1997-10-28 | Krosaki Corporation | Castable refractory rich with alumina coarse grains |
| US5681785A (en) * | 1996-10-28 | 1997-10-28 | Krosaki Corporation | Castable refractory containing alumina coarse grains |
| JP2002519302A (en) * | 1998-07-06 | 2002-07-02 | シーメンス アクチエンゲゼルシヤフト | Molding material for producing refractory lining and fired molded member, lining, and method for producing molded member |
| FR2788762A1 (en) * | 1999-01-26 | 2000-07-28 | Lafarge Aluminates | Clinker-type hydraulic binder for refractory concrete, especially for a steel ladle wear lining, has a high magnesia spinel phase content and a low calcium aluminate phase content |
| WO2000044684A1 (en) * | 1999-01-26 | 2000-08-03 | Lafarge Aluminates | Clinker hydraulic binder, use and method for making same |
| US6730159B1 (en) | 1999-01-26 | 2004-05-04 | Lafarge Aluminates | Clinker hydraulic binder, use and method for making same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0348156B2 (en) | 1991-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |