发明名称 |
Method for the treating stainless steel refining slag |
摘要 |
The slag in a molten state formed at a step of refining stainless steel is adjusted such that the slag has a basicity in the range of 1.3-4.0, and the slag is mixed with a sulfur-containing material wherein the sulfur is zero or minus in valence, thereby setting the concentration of sulfur in the slag to be not less than 0.2% by weight. The slag is so modified that Cr<6+> is substantially completely prevented from being eluted and can be effectively utilized as a roadbed material and a reclamation material for civil works. The slag is quenched at such a speed of cooling that the temperature of the slag is decreased from 1200° C. to 400° C. within 48 hours so that noticeable effects are attained.
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申请公布号 |
US6732547(B1) |
申请公布日期 |
2004.05.11 |
申请号 |
US20000700020 |
申请日期 |
2000.11.09 |
申请人 |
JFE STEEL CORPORATION |
发明人 |
MATSUNAGA HISAHIRO;TADA CHIKASHI;KUMAGAI MASATO;SAKURAYA TOSHIKAZU |
分类号 |
C04B5/06;C21C5/00;C21C5/28;C21C5/54;C21C7/00;C21C7/068;C22B7/04;F27D15/00;(IPC1-7):C04B5/06 |
主分类号 |
C04B5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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