发明授权
- 专利标题： Method and apparatus for vacuum decarburization refining of molten steel
- 专利标题（中）： 钢水真空脱碳精炼方法及装置
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申请号： US09712303申请日： 2000-11-14
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公开(公告)号： US06468467B1公开(公告)日： 2002-10-22
- 发明人: Kenichiro Miyamoto , Katsuhiko Kato , Akio Shinkai , Takayuki Kaneyasu , Shinya Kitamura , Hiroyuki Ishimatsu , Hiroshi Sugano , Keiichi Katahira , Ryuzou Hayakawa
- 申请人： Kenichiro Miyamoto , Katsuhiko Kato , Akio Shinkai , Takayuki Kaneyasu , Shinya Kitamura , Hiroyuki Ishimatsu , Hiroshi Sugano , Keiichi Katahira , Ryuzou Hayakawa
- 优先权： JP8/326178 19961120; JP8/337565 19961202; JP8/342442 19961207; JP9/120301 19970422; JP9/120302 19970422; JP9/123186 19970424; JP9/134299 19970507; JP9/220640 19970731
- 主分类号： C21C710
- IPC分类号： C21C710
摘要：
In a straight barrel type vacuum refining apparatus, use is made of a combination of: a decarburization method wherein the flow rate of oxygen fed into a vacuum tank and the flow rate of an inert gas fed into the vacuum tank are regulated and, at the same time, the flow rate of oxygen gas blown is reduced at a rate of 0.5 to 12.5 Nm3/h/t/min in a low carbon concentration region having a carbon concentration of not more than the critical carbon concentration; and a vacuum refining apparatus provided with dust accumulation preventing means.
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