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公开(公告)号:JP2008063633A
公开(公告)日:2008-03-21
申请号:JP2006244752
申请日:2006-09-08
Applicant: Kurosaki Harima Corp , Nippon Steel Corp , 新日本製鐵株式会社 , 黒崎播磨株式会社
Inventor: SHIMIZU KOICHI , TAKAYANAGI YUSAKU , TANAKA MANJIRO , TAMAKI TAKEYUKI , GOTO KIYOSHI
IPC: C21C7/10
Abstract: PROBLEM TO BE SOLVED: To achieve the long service life of an immersion tube in which the invasion of the outer air into a vacuum vessel caused by the deformation at the upper part of a core metal, is prevented and the pick-up of nitrogen gas in the treated molten steel is reduced and further, the arrangement of magnesia-carbon bricks on the inner periphery of the immersion tube can be performed.
SOLUTION: In the immersion tube constructing monolithic refractory on the inner and the outer surface of the core metal; till at least 200 mm from the upper end of the core metal, the thickness of the core metal is regulated to the range of 30-50 mm.
COPYRIGHT: (C)2008,JPO&INPITAbstract translation: 要解决的问题:为了实现浸入管的长使用寿命,其中防止由于芯金属上部的变形引起的外部空气侵入真空容器,并且拾取 处理后的钢水中的氮气减少,并且还可以进行浸渍管内周上的氧化镁 - 碳砖的布置。 解决方案:在芯管的内表面和外表面上的浸入管中构成整体耐火材料; 直到与芯金属的上端至少200mm,芯金属的厚度被调节到30-50mm的范围。 版权所有(C)2008,JPO&INPIT
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公开(公告)号:JPWO2005087406A1
公开(公告)日:2008-01-24
申请号:JP2006511021
申请日:2005-03-14
CPC classification number: C04B35/6262 , B22D41/54 , C04B35/03
Abstract: ドロマイトクリンカーを配合した耐火物を溶鋼と接する面に配置した連続鋳造ノズルにおいて、溶鋼を鋳造する際に長時間の鋳造や溶鋼中のアルミナによる稼動面への優れたアルミナ付着防止機能とともに耐食性を改善する。配合物が平均粒度が0.8mm以下でCaOの含有量が50質量%以下のドロマイトクリンカーからなり、しかもCaOの質量含有量をW1とし、同じくMgOの質量含有量をW2としたときのW1/W2の比が0.33以上になるように配合バインダーを添加して混練、成形、熱処理して得られる耐火物である。また、配合物がドロマイトクリンカーとマグネシアクリンカーからなり、ドロマイトクリンカーの粒度構成における1mm以下の粒子の質量%をWDとし、マグネシアクリンカーの粒度構成における1mm以下の粒子の質量%をWMとしたとき、WD/WMの比が0.5以上15以下であり、CaO成分の含有質量%をW1とし、MgO成分の含有質量%をW2としたとき、W1/W2の比が0.33〜3.0である。
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公开(公告)号:JP4034858B2
公开(公告)日:2008-01-16
申请号:JP29767597
申请日:1997-10-14
Applicant: 黒崎播磨株式会社
IPC: C04B35/66 , C04B35/634
CPC classification number: C04B35/63488 , C04B35/66 , C04B2235/3206 , C04B2235/3217
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公开(公告)号:JP2008001548A
公开(公告)日:2008-01-10
申请号:JP2006171353
申请日:2006-06-21
Applicant: Kurosaki Harima Corp , 黒崎播磨株式会社
Inventor: TAKAHASHI NOBUYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a monolithic refractory which can be rapidly heated and dried without occurring an explosive fracture, expansion, cracks and the like after worked with application water. SOLUTION: The monolithic refractory is manufactured by adding polypropylene fibers whose surfaces are adhered with a sulfonic acid compound and/or a carboxylic acid compound of 0.01-1 mass% in outer percentage to a refractory raw material of 100 mass%. As the fluidity falling of the monolithic refractory can be prevented by adhering the sulfonic acid compound and/or the carboxylic acid compound on a surface, polypropylene fibers having a large fiber diameter can be used. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题:提供一种可以快速加热和干燥的整体耐火材料,在施加水后加工而不发生爆炸性破裂,膨胀,裂纹等。 解决方案:整体耐火材料是通过将表面与外部百分比为0.01-1质量%的磺酸化合物和/或羧酸化合物的表面粘附到100质量%的耐火材料中而制成的。 通过将磺酸化合物和/或羧酸化合物粘附在表面上可以防止整体耐火材料的流动性下降,可以使用具有大纤维直径的聚丙烯纤维。 版权所有(C)2008,JPO&INPIT
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220.
公开(公告)号:JP2007292601A
公开(公告)日:2007-11-08
申请号:JP2006120729
申请日:2006-04-25
Applicant: Kurosaki Harima Corp , Nippon Steel Corp , 新日本製鐵株式会社 , 黒崎播磨株式会社
Inventor: TANAKA SHINJI , NITTA NORIO
Abstract: PROBLEM TO BE SOLVED: To provide a wear resistance evaluation method, capable of performing evaluation that better coincides with actual usage environment, with respect to the wear resistance of a refractory material, especially a trough material. SOLUTION: (a) The sample S of the refractory material is brought into contact with a two-layered melt comprising a molten metal 1 and the molten slag 2 placed on the molten metal 1 over both layers 1 and 2 and the sample S and the melts 1 and 2 are relatively vibrated, to make the sample S worn out by the melts 1 and 2. (b) The wearing of the sample S is performed, while replenishing the melt 1 and 2 with a carbonaceous raw material at appropriate times. Next, the wear amount of the sample S is measured, and the wear resistance of the sample S is evaluated, on the basis of the measured the wear amount. COPYRIGHT: (C)2008,JPO&INPIT
Abstract translation: 要解决的问题:提供耐磨性评价方法,其能够进行与耐用材料,特别是槽材料的耐磨性相比,更好地与实际使用环境一致的评价。 解决方案:(a)使耐火材料的样品S与包含熔融金属1的两层熔体和放置在熔融金属1上的熔融炉渣2在两层1和2上接触,并且样品 S和熔体1和2相对振动,使样品S被熔体1和2磨损。(b)进行样品S的磨损,同时用碳质原料补充熔体1和2 适当的时候 接下来,测量样品S的磨损量,并且基于测量的磨损量来评价样品S的耐磨性。 版权所有(C)2008,JPO&INPIT
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