| 申请号 | TW107136509 | 申请日 | 2018-10-17 | 公开(公告)号 | TW201930223A | 公开(公告)日 | 2019-08-01 |
| 申请人 | NIPPON STEEL & SUMITOMO METAL CORP; | 发明人 | SAKAMOTO MOTOHIRO; | ||||
| 摘要 | A method according to the present invention provides a hot metal having a P concentration of 1.9 to 3.8 mass% and a Cr concentration of less than 0.2 mass% by supplying an oxygen source to a hot metal having a P concentration of 2 to 4 mass% and a Cr concentration of 0.3 to 1.2 mass% for dechromization under a condition where a slag basicity (CaO mass%)/(SiO2 mass%) is adjusted to greater than 0.1 and not more than 1 and the hot metal temperature is adjusted to be within the range of 1250 DEG C to 1500 DEG C. | ||||||
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