JPH07127978A - Non-phosphoric acid spray repair material - Google Patents
Non-phosphoric acid spray repair materialInfo
- Publication number
- JPH07127978A JPH07127978A JP5295972A JP29597293A JPH07127978A JP H07127978 A JPH07127978 A JP H07127978A JP 5295972 A JP5295972 A JP 5295972A JP 29597293 A JP29597293 A JP 29597293A JP H07127978 A JPH07127978 A JP H07127978A
- Authority
- JP
- Japan
- Prior art keywords
- repair material
- phosphoric acid
- furnace
- weight
- spray repair
- 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
Landscapes
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、製鋼炉、溶解炉、回転
炉、電気炉などの製鋼炉あるいは取鍋などの各種製鋼用
容器の局部損傷部を熱間で補修するための補修材に関
し、さらに詳しくは、ガス混入率の少ない精錬鋼製鋼容
器の補修に適する非リン酸系吹付補修材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair material for hot repairing a locally damaged part of a steelmaking furnace such as a steelmaking furnace, a melting furnace, a rotary furnace, an electric furnace or a container for steelmaking such as a ladle. More specifically, the present invention relates to a non-phosphoric acid-based spray repair material suitable for repairing a refined steel steel container having a low gas mixture rate.
【０００２】[0002]
【従来の技術】各種製鋼炉や製鋼用容器の内壁は、溶鋼
や溶銑などによる摩耗ならびにスラグによる侵食などに
よって局部的に損傷を受け、炉全体の寿命を著しく短く
する。そこで稼働途中で生じた亀裂、脱落、溶解などの
損傷に対しては応急的に熱間での吹付補修などが行わ
れ、炉寿命の延長が図られ炉体保護がなされている。2. Description of the Related Art The inner walls of various steelmaking furnaces and steelmaking vessels are locally damaged by wear of molten steel, hot metal, etc. and erosion by slag, which significantly shortens the life of the entire furnace. Therefore, for damages such as cracks, falling off, and melting that occurred during operation, hot spray repairs were temporarily performed to extend the life of the furnace and protect the furnace body.
【０００３】吹付補修は、吹付補修材を吹付ガンを用い
て必要個所へ接着させるもので、補修個所に確実に補修
材を投入でき、炉の操業を中止することなく補修ができ
る。この場合、吹付補修材には以下の特性が要求され
る。すなわち、（１）補修時の操作性に適する流動性な
らびにスラリ−性を有すること、（２）スラグ侵食に対
する抵抗性として耐スラグ性に優れていること、（３）
損傷部と補修材との接着性が高く、使用条件下で焼結に
よる強固な構造を形成した耐スポ−リング性を有するこ
と、（４）高温における耐用性に優れること、（５）吹
付材による溶鋼への汚染がないこと、などの特性が求め
られる。In the spray repair, the spray repair material is adhered to a necessary place by using a spray gun, and the repair material can be surely put in the repair place, and the repair can be performed without stopping the operation of the furnace. In this case, the spray repair material is required to have the following characteristics. That is, (1) it has fluidity and slurry properties suitable for operability during repair, (2) it has excellent slag resistance as resistance to slag erosion, (3)
The damaged part and the repair material have high adhesiveness, have a sponging resistance that forms a strong structure by sintering under use conditions, (4) excellent durability at high temperature, and (5) spray material Characteristics such as no contamination of molten steel due to
【０００４】[0004]
【発明が解決しようとする課題】一般に吹付補修材には
補修操作時の補修材に流動性、スラリ−性を付与し、施
工後の使用温度での強度を保持するために結合剤が配合
されている。上記（１）、（２）、（３）に関しては従
来より結合剤としてリン酸塩などの無機化合物の他、Ｃ
ＭＣ、ＭＣ、ＰＶＡ、デキストリン、パルプ廃液などの
有機系結合剤の配合がなされている。特にリン酸塩は熱
間強度に優れ、解膠力が高く被吹付体への濡れ性が確保
できるため多用されてきた。しかし、リン酸を吹付補修
材に配合した場合には溶鋼がリン酸により汚染されて、
上記（５）の要求特性と矛盾する。特にリン酸成分は製
鋼工程において鋼の品質低下をきたすため、脱リン工程
が取り入れられている現状では好ましい成分ではなく、
ステンレスなどの特殊鋼の製造工程やレ−ドルでは特に
その要求が強い。一方、他の結合剤を使用した場合に
は、高温における耐用性に欠け、上記（４）の特性を満
足させることはできない。また、吹付補修は単に炉操業
中の損傷部に対する応急処置の効果の他、１回の吹付補
修により２チャ−ジ後でも高い残存率を有する補修材の
耐用性、耐熱性が期待される。近年多用されるようにな
ったＲＨ脱ガスなどの工程が実施される鋼種において
は、出鋼温度が１７００〜１８００℃と高くなり、上記
（２）、（３）、（４）を満たす優れた耐用性、耐熱性
を満足する補修材が求められる。しかし補修材の残存率
は炉の使用温度に依存し、出鋼温度１８００℃の高温に
なると従来の吹付補修材では１チャ−ジ後でも残存率は
０％近くとなるのが現状である。このように、純度高い
精錬が要求されつつある状況の中、優れた高温耐用性な
らびに高温付着性を有し、しかも溶鋼を汚染することの
ない非リン酸系吹付補修材の開発が強く求められてい
る。Generally, a spray repair material is blended with a binder in order to impart fluidity and slurry property to the repair material at the time of repair operation and to maintain the strength at working temperature after construction. ing. Regarding the above (1), (2), and (3), conventionally, in addition to inorganic compounds such as phosphate as a binder, C
An organic binder such as MC, MC, PVA, dextrin, pulp waste liquid, etc. is blended. In particular, phosphates have been widely used because of their excellent hot strength, high peptizing power, and their ability to secure wettability to the object to be sprayed. However, when phosphoric acid is added to the spray repair material, the molten steel is contaminated with phosphoric acid,
It contradicts the required characteristics of (5) above. In particular, the phosphoric acid component causes deterioration of the quality of the steel in the steelmaking process, so it is not a preferable component in the present situation where the dephosphorization process is incorporated,
This is especially required in the manufacturing process and ladles of special steel such as stainless steel. On the other hand, when other binders are used, the durability at high temperature is insufficient, and the characteristic (4) cannot be satisfied. Further, in addition to the effect of the first-aid measures for the damaged portion during the furnace operation, the spray repair is expected to have the durability and heat resistance of the repair material having a high residual rate even after two charges by one spray repair. In steel grades in which processes such as RH degassing, which have become widely used in recent years, are performed, the tapping temperature is as high as 1700 to 1800 ° C., which is excellent in satisfying the above (2), (3), and (4). Repair materials that satisfy durability and heat resistance are required. However, the residual rate of the repair material depends on the operating temperature of the furnace, and at the present time, when the tapping temperature is as high as 1800 ° C., the residual rate of the conventional sprayed repair material is close to 0% even after 1 charge. In this way, under the circumstances where high-purity refining is being demanded, it is strongly required to develop a non-phosphoric acid-based spray repair material that has excellent high-temperature durability and high-temperature adhesion, and that does not contaminate molten steel. ing.
【０００５】[0005]
【課題を解決するための手段】本発明者は、これら実情
に鑑み鋭意研究したところ、配合成分のＰＨを調整する
ことにより優れた補修材の緻密性ならびに解膠性が得ら
れ、付着後の高温での施工性の確保が行えることを見い
出し、本発明を完成するに至った。Means for Solving the Problems The present inventor has conducted diligent research in view of these circumstances, and as a result, by adjusting the PH of the compounding ingredients, excellent compactness and peptizing property of the repair material can be obtained, and It was found that the workability at high temperature can be secured, and the present invention has been completed.
【０００６】すなわち本発明は、（イ）ＭｇＯ骨材１０
〜７０重量％、（ロ）ＣａＣＯ3被覆層を形成した特殊
ドロマイト骨材またはＣａＯ成分を４０重量％以上含有
したドロマイト骨材２０〜７０重量％、（ハ）珪酸塩１
〜１０重量％、（ニ）炭酸カルシウム１〜１０重量％、
（ホ）シリカ超微粉１〜５重量％、および（ヘ）硫酸マ
グネシウム０．１〜３．０重量％からなる非リン酸系吹
付補修材を提供するものである。以下、詳細に本発明を
説明する。That is, the present invention provides (a) MgO aggregate 10
˜70% by weight, (b) special dolomite aggregate having a CaCO 3 coating layer formed thereon or dolomite aggregate containing 40% by weight or more of CaO component 20 to 70% by weight, (c) silicate 1
-10 wt%, (d) calcium carbonate 1-10 wt%,
(E) A non-phosphoric acid-based spray repair material comprising 1 to 5% by weight of ultrafine silica powder and (f) 0.1 to 3.0% by weight of magnesium sulfate. Hereinafter, the present invention will be described in detail.
【０００７】本発明の非リン酸系吹付補修材では、Ｍｇ
Ｏ骨材としては従来一般に用いられているものを用いる
ことができる。その粒度については特に限定されるもの
ではないが、得られる補修材の強度や流動性、充填性の
点から粒径は７ｍｍ以下程度のものが好ましく、特に好
ましくは５．０ｍｍ以下のものである。配合量は、１０
〜７０重量％の範囲が好ましく、特に好ましくは１０〜
５０重量％の範囲である。In the non-phosphoric acid spray repair material of the present invention, Mg
As the O-aggregate, one generally used in the past can be used. The particle size is not particularly limited, but the particle size is preferably about 7 mm or less, and particularly preferably 5.0 mm or less, from the viewpoint of strength, fluidity, and filling property of the repair material to be obtained. . Compounding amount is 10
The range is preferably 70 to 70% by weight, particularly preferably 10 to
It is in the range of 50% by weight.
【０００８】本発明の非リン酸系吹付補修材では、Ｃａ
ＣＯ3被覆層を形成した特殊ドロマイト骨材またはＣａ
Ｏ成分を４０％以上含有したドロマイト骨材を使用でき
る。ドロマイト骨材の粒子径については特に限定される
ものではないが、ＭｇＯ骨材と同様の理由から７ｍｍ以
下であることが好ましく、特に好ましくは５ｍｍ以下で
ある。ドロマイト骨材は特に耐消化性を高めるために炭
酸ガスによる表面処理を施した特殊なものを用いる。こ
こで、炭酸ガスによる表面処理としては、ドロマイト骨
材あるいは合成ドロマイト骨材を炭酸ガス濃度８０％以
上、温度４００〜８００℃の雰囲気中にて３〜６時間程
度放置し、その表面を炭酸ガスと接触させてＣａＣＯ3
被覆層を形成する方法が好適に採用される。形成するＣ
ａＣＯ3被覆層の厚さは０．８〜１．０μｍとするのが
好ましく、この層厚の範囲で充分な耐消化性が得られ
る。また、ＣａＣＯ3被覆層を形成した特殊ドロマイト
骨材に代えてＣａＯを含有するドロマイト骨材を使用す
ることができる。ＣａＯは非リン酸系吹付補修材に配合
される珪酸成分と反応し、高温度域での熱間強度の高い
３ＣａＯ・ＳｉＯ2を形成する。従来はＳｉＯ2成分が高
温でＭｇＯ成分と液相を作るため、充分な熱間強度の確
保ができなかった。しかし本発明ではＣａＯ成分を積極
的に取り入れることにより３ＣａＯ・ＳｉＯ2を形成さ
せている。このためにはＣａＯは４０％以上の高濃度で
含有されることが好ましい。なお、これらＣａＣＯ3被
覆層を形成した特殊ドロマイト骨材またはＣａＯ成分を
４０％以上含有したドロマイト骨材の配合量は２０〜７
０重量％の範囲、特には７０重量％に近いほど好まし
い。In the non-phosphoric acid spray repair material of the present invention, Ca
Special dolomite aggregate or Ca with a CO 3 coating layer
Dolomite aggregate containing 40% or more of O component can be used. The particle size of the dolomite aggregate is not particularly limited, but is preferably 7 mm or less, and particularly preferably 5 mm or less for the same reason as the MgO aggregate. As the dolomite aggregate, a special one is used which has been surface-treated with carbon dioxide gas in order to particularly improve the digestion resistance. Here, as the surface treatment with carbon dioxide gas, dolomite aggregate or synthetic dolomite aggregate is left to stand for about 3 to 6 hours in an atmosphere having a carbon dioxide gas concentration of 80% or more and a temperature of 400 to 800 ° C. for about 3 to 6 hours. Contact with CaCO 3
A method of forming the coating layer is preferably adopted. Forming C
The thickness of the aCO 3 coating layer is preferably 0.8 to 1.0 μm, and sufficient digestion resistance can be obtained within this layer thickness range. Further, instead of the special dolomite aggregate having the CaCO 3 coating layer formed thereon, dolomite aggregate containing CaO can be used. CaO reacts with the silicic acid component blended in the non-phosphoric acid spray repair material to form 3CaO.SiO 2 having high hot strength in a high temperature range. Conventionally, the SiO 2 component forms a liquid phase with the MgO component at a high temperature, so that sufficient hot strength cannot be secured. However, in the present invention, 3CaO.SiO 2 is formed by positively incorporating the CaO component. For this purpose, CaO is preferably contained at a high concentration of 40% or more. The blending amount of the special dolomite aggregate having the CaCO 3 coating layer or the dolomite aggregate containing 40% or more of CaO component is 20 to 7
The range of 0% by weight, particularly 70% by weight, is more preferable.
【０００９】本発明の非リン酸系吹付補修材に配合され
る他の成分としては珪酸塩、炭酸カルシウム、シリカ超
微粉、硫酸マグネシウムがある。これらの成分が、前記
ＭｇＯ骨材およびドロマイト骨材と混和される。この混
合物５．００ｇを、マグネットスターラーで攪拌をして
いる純水５００ｍｌ中に投入し、１０秒ごとにＰＨを測
定した場合に、約１０秒間ＰＨ８．５〜１０．５の範囲
であり、６０秒後のＰＨが１０．５〜１１．５の範囲で
あれば、通常、非リン酸系吹付補修材としての適度なス
ラリ−性ならびに結着性が得られる。すなわち、配合成
分により形成される水ガラスのゲル化が防止でき、ゲル
化防止により解膠力の確保が可能となる。また、解膠力
の確保により添加水量を減少することができ、補修材の
緻密層形成がなされる。特に、低水分化による緻密層の
形成により、ドロマイトと珪酸との反応による３ＣａＯ
・ＳｉＯ2の形成が円滑に促進され、素地強度の向上、
気孔率の低下によるスラグの浸透防止などの諸効果も生
ずる。加えて、解膠性の向上により被吹付体への濡れ性
も確保できる。一方、初期に強アルカリを示さず、経時
的にアルカリ度が強くなるため、経過時間に伴い水ガラ
スのゲル化が進み硬化保型性を発揮する。すなわち、被
吹付体への付着後の補修材は、ＭｇＯ骨材、ドロマイト
骨材から放出されるアルカリイオンが作用して水ガラス
がゲル化され、保型、硬化する。これによりシリカ超微
粉の凝集効果とあわせて、従来困難とされていた高温で
の施工性が確保される。なお、硫酸マグネシウムの添加
により焼結反応が促進され、高温での耐用性の著しい向
上も得られる。これら成分の配合量は珪酸塩１〜１０重
量％、炭酸カルシウム１〜１０重量％、シリカ超微粉１
〜５重量％、硫酸マグネシウム０．１〜３重量％の範囲
が好ましい。また、シリカ超微粉とは平均粒子径により
厳密に定義されるものではないが、おおむね平均粒子径
０．２０μｍ以下のシリカ粉をいう。Other components to be blended with the non-phosphoric acid spray repair material of the present invention are silicate, calcium carbonate, ultrafine silica powder and magnesium sulfate. These components are mixed with the MgO aggregate and the dolomite aggregate. When 5.00 g of this mixture was put into 500 ml of pure water which was stirred by a magnetic stirrer, and the pH was measured every 10 seconds, the pH was in the range of 8.5 to 10.5 for about 10 seconds, and 60 When the PH after second is in the range of 10.5 to 11.5, appropriate slurry property and binding property as a non-phosphoric acid spray repair material are usually obtained. That is, it is possible to prevent gelation of water glass formed by the blended components, and it is possible to secure peptization power by preventing gelation. Further, the amount of added water can be reduced by ensuring the peptizing power, and a dense layer of the repair material can be formed. In particular, due to the formation of a dense layer by lowering the water content, 3CaO by the reaction of dolomite and silicic acid
・ The formation of SiO 2 is promoted smoothly, and the strength of the substrate is improved.
Various effects such as prevention of permeation of slag due to a decrease in porosity also occur. In addition, the improved peptization property ensures the wettability to the sprayed object. On the other hand, since it does not show a strong alkali in the initial stage and the alkalinity becomes stronger over time, the gelation of the water glass progresses with the passage of time, and the curing shape retention property is exhibited. That is, in the repair material after being attached to the sprayed body, the alkali glass released from the MgO aggregate and the dolomite aggregate acts to gel the water glass, and the shape is retained and cured. As a result, the workability at high temperature, which has been difficult to achieve in the past, is secured together with the aggregating effect of silica ultrafine powder. The addition of magnesium sulfate promotes the sintering reaction, and the durability at high temperature is significantly improved. The amount of these components is 1 to 10% by weight of silicate, 1 to 10% by weight of calcium carbonate, and ultrafine silica powder 1
The range of ˜5% by weight and 0.1 to 3% by weight of magnesium sulfate is preferable. Further, the ultrafine silica powder is not strictly defined by the average particle diameter, but refers to silica powder having an average particle diameter of 0.20 μm or less.
【００１０】本発明の非リン酸系吹付補修材を製造する
にあたっては、特に限定がなく通常の方法により製造す
ることができる。例えば所定量の配合成分を混合し、ロ
−ルパンなどで混練すればよい。The non-phosphoric acid-based spray repair material of the present invention can be manufactured by a usual method without any particular limitation. For example, a predetermined amount of compounding ingredients may be mixed and kneaded with a roll pan or the like.
【００１１】また、本発明の非リン酸系吹付補修材の使
用方法についても特に限定はなく、従来の吹付補修材と
同様に使用することができ、回転炉、電気炉などの損傷
部に吹き付けガンにより補修材を投入し、熱間で吹付補
修する。The method of using the non-phosphoric acid-based spray repair material of the present invention is not particularly limited, and it can be used in the same manner as the conventional spray repair material, and can be sprayed on a damaged portion such as a rotary furnace or an electric furnace. A repair material is put in with a gun, and hot spray repair is performed.
【００１２】[0012]
【実施例】以下に実施例に基づき本発明を具体的に説明
するが、本発明はこれらに限定されるものではない。EXAMPLES The present invention will be specifically described below based on examples, but the present invention is not limited thereto.
【００１３】（実施例１〜２、比較例１〜２：熱間曲げ
強度）表−１に示す配合割合の諸成分をロ−ルパンで混
練して吹付補修材を製造した。この吹付補修材を８００
℃、１２００℃、１４００℃にて加熱し、各温度におけ
る熱間曲げ強さを測定した。その結果、比較例に示す従
来品は低温では熱間曲げ強度が高いものの、温度上昇に
伴い強度が低下した。しかし、本発明品では高温におけ
る優れた曲げ強度が観察された。(Examples 1 and 2, Comparative Examples 1 and 2: Hot Bending Strength) Various components having the compounding ratios shown in Table 1 were kneaded in a roll pan to produce spray repair materials. 800 this spray repair material
C., 1200.degree. C., and 1400.degree. C. were heated, and hot bending strength at each temperature was measured. As a result, the conventional products shown in Comparative Examples had high hot bending strength at low temperatures, but the strength decreased with increasing temperature. However, in the product of the present invention, excellent bending strength at high temperature was observed.
【００１４】（実施例３、比較例３：施工性および耐用
性）実施例１、比較例１と同じ配合組成の吹付補修材を
調製した後、実炉にて使用し、付着、剥離、ホッピング
などの施工性ならびに１チャ−ジ後、２チャ−ジ後の残
存率を測定した。施工条件を表−２に、結果を表−３に
示す。従来品では施工時に小さな剥離が観察されたが、
本発明品においては良好な付着性を有し、剥離は全く観
察されなかった。また、従来品は１８００℃の温度条件
において１チャ−ジ後の残存率は０％であったが、本発
明品においては２チャ−ジ後でも３０％の残存率を有
し、高温における優れた耐用性が観察された。(Example 3, Comparative Example 3: Workability and Durability) After preparing a spray repair material having the same composition as in Example 1 and Comparative Example 1, it was used in an actual furnace for adhesion, peeling and hopping. The workability such as the above and the residual rate after 1 charge and 2 charges were measured. The construction conditions are shown in Table-2 and the results are shown in Table-3. With conventional products, small peeling was observed during construction,
The product of the present invention had good adhesion and no peeling was observed. Further, the conventional product had a residual rate of 0% after 1 charge under the temperature condition of 1800 ° C., but the inventive product has a residual rate of 30% even after 2 charges, which is excellent at high temperature. Durability was observed.
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】[0017]
【表３】 [Table 3]
【００１８】[0018]
【発明の効果】本発明による非リン酸系吹付補修材は、
結合剤としてリン酸を含有しないために溶鋼にリン酸の
混入がない。このため精錬鋼製鋼容器の補修に用いれ
ば、精錬鋼を汚染することなく吹付補修が可能となる。
また、本発明においては配合成分によりＰＨを調整し水
ガラスの解膠力を確保している。このため低水分量で吹
付補修材が調製され、緻密度の高い吹付補修材の生成な
らびに高温で耐用性のある３ＣａＯ・ＳｉＯ2の形成の
促進がなされ、硫酸マグネシウムの配合による焼結反応
の促進、シリカ超微粉の凝集反応と相まって１８００℃
前後の高温においても優れた耐用性を有する。加えて、
本発明の非リン酸系吹付補修材を用いた場合には、炉操
業中の損傷部に対する応急処置にとどまらず、１回の吹
付補修により２チャ−ジ後でも高い残存率を保持するこ
とができる。The non-phosphoric acid spray repair material according to the present invention is
Since phosphoric acid is not contained as a binder, there is no mixing of phosphoric acid in molten steel. Therefore, if it is used for repairing a refined steel steel container, it is possible to perform spray repair without contaminating the refined steel.
Further, in the present invention, the peptizing power of the water glass is ensured by adjusting the pH by the compounding ingredients. Therefore, a spray repair material is prepared with a low water content, a highly dense spray repair material is generated, and formation of 3CaO / SiO 2 that is durable at high temperature is promoted, and the sintering reaction is promoted by mixing magnesium sulfate. , 1800 ℃ coupled with the agglomeration reaction of ultrafine silica powder
It has excellent durability even at high and low temperatures. in addition,
When the non-phosphoric acid-based spray repair material of the present invention is used, it is possible to maintain a high residual rate even after two charges after a single spray repair, as well as emergency measures for damaged parts during furnace operation. it can.
Claims (1)
（ロ）ＣａＣＯ3被覆層を形成した特殊ドロマイト骨材
またはＣａＯ成分を４０重量％以上含有したドロマイト
骨材２０〜７０重量％、（ハ）珪酸塩１〜１０重量％、
（ニ）炭酸カルシウム１〜１０重量％、（ホ）シリカ超
微粉１〜５重量％、および（ヘ）硫酸マグネシウム０．
１〜３．０重量％からなる非リン酸系吹付補修材。(A) 10 to 70% by weight of MgO aggregate,
(B) 20 to 70% by weight of special dolomite aggregate having a CaCO 3 coating layer or dolomite aggregate containing 40% by weight or more of CaO component, (c) 1 to 10% by weight of silicate,
(D) 1 to 10% by weight of calcium carbonate, (e) 1 to 5% by weight of ultrafine silica powder, and (f) magnesium sulfate of 0.
Non-phosphoric acid spray repair material consisting of 1 to 3.0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5295972A JP2733644B2 (en) | 1993-11-02 | 1993-11-02 | Non-phosphoric acid spray repair material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5295972A JP2733644B2 (en) | 1993-11-02 | 1993-11-02 | Non-phosphoric acid spray repair material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07127978A true JPH07127978A (en) | 1995-05-19 |
| JP2733644B2 JP2733644B2 (en) | 1998-03-30 |
Family
ID=17827479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5295972A Expired - Fee Related JP2733644B2 (en) | 1993-11-02 | 1993-11-02 | Non-phosphoric acid spray repair material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2733644B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879661A (en) * | 2019-04-08 | 2019-06-14 | 北京利尔高温材料股份有限公司 | A kind of coating tundish material and preparation method thereof |
| CN114213113A (en) * | 2021-12-30 | 2022-03-22 | 河南陇耐耐火材料有限公司 | Steel ladle hot-patching material, preparation method thereof and steel ladle hot-patching method |
-
1993
- 1993-11-02 JP JP5295972A patent/JP2733644B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109879661A (en) * | 2019-04-08 | 2019-06-14 | 北京利尔高温材料股份有限公司 | A kind of coating tundish material and preparation method thereof |
| CN109879661B (en) * | 2019-04-08 | 2021-10-08 | 北京利尔高温材料股份有限公司 | Tundish coating material and preparation method thereof |
| CN114213113A (en) * | 2021-12-30 | 2022-03-22 | 河南陇耐耐火材料有限公司 | Steel ladle hot-patching material, preparation method thereof and steel ladle hot-patching method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2733644B2 (en) | 1998-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113716941B (en) | High-corrosion-resistance low-expansion magnesia carbon brick and preparation method thereof | |
| KR100741491B1 (en) | Deoxidizing refractory composition for preparing steel with high purity and preparing method thereof | |
| US5124288A (en) | Refractory material containing calcium carbonate-stabilized synthetic dolomite | |
| KR940001661B1 (en) | Refractory material containing calcium carbonate stabilized synthetic dolomite | |
| WO1992018440A1 (en) | Unshaped alumina spinel refractory | |
| JP2733644B2 (en) | Non-phosphoric acid spray repair material | |
| JPS5834423B2 (en) | Basic refractory composition | |
| JP2021084115A (en) | Tundish coating material | |
| JPS5934674B2 (en) | Basic refractory composition | |
| JPH09278552A (en) | Flame-spraying material for furnace | |
| KR100213320B1 (en) | Process for producing spray deposit | |
| JP7068255B2 (en) | CaO-ZrO2 composition, CaO-ZrO2 composition manufacturing method, CaO-ZrO2-containing refractory and casting nozzle | |
| JPH0524911A (en) | Graphite-containing mgo-cao based refractories | |
| JPH09188572A (en) | Repairing materila for cold apraying containing synthetic magnesia-clinker | |
| JP2003128457A (en) | Calcia clinker and refractory product obtained using the same | |
| JPH0230364B2 (en) | SEIKOYOSHINKUDATSUGASUSOCHINORAININGUKOZO | |
| KR100348662B1 (en) | Spray composition for repairing furnace inner wall | |
| JPH08268768A (en) | Monolithic refractory material for casting | |
| JPH10287479A (en) | Alumina flame spray material and method for repairing lining refractory of kiln | |
| JPH03126678A (en) | Casting monolithic refractory for lining molten metal vessel | |
| JPH0235706B2 (en) | ||
| JPH01141873A (en) | Refractory for vessel for pretreatment of hot metal | |
| JPH04182361A (en) | Repairing material for spraying | |
| JPS59217667A (en) | Lime non-baked refractories | |
| JPH069265A (en) | Refractory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: R3D02 |
|
| LAPS | Cancellation because of no payment of annual fees |