发明名称 |
PROCESS FOR PRODUCING PRE-REDUCED IRON. |
摘要 |
<p>A process for producing a pre-reduced iron which comprises: a drying step in which a raw iron oxide material selected from the group consisting of iron industry dust resulting from a steelmaking process and iron ore is dried to a given water content; a mixing step in which the raw iron oxide material which has undergone the drying step is mixed with a reducing material having a given water content to obtain a mixture; a pulverization step in which the mixture obtained in the mixing step is pulverized to 70-500 µm in terms of 80% cumulative particle diameter in sieving; a kneading step in which the water content of the mixture obtained by the pulverization step is regulated and then the mixture is kneaded; a briquetting step in which the mixture which has undergone the kneading step is briquetted to obtain briquettes; and a production step in which the briquettes obtained in the briquetting step are reduced with a rotary hearth furnace to produce a pre-reduced iron.</p> |
申请公布号 |
MX2010004099(A) |
申请公布日期 |
2010.05.14 |
申请号 |
MX20100004099 |
申请日期 |
2008.10.16 |
申请人 |
NIPPON STEEL CORPORATION |
发明人 |
HIROKI GOFUKU;YUKI KUWAUCHI;WATARU NAGAI;KAZUHISA FUKUDA;TAKASHI SAWAI |
分类号 |
C21B13/10;C22B1/16;C22B1/24;C22B7/02 |
主分类号 |
C21B13/10 |
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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