发明名称 |
Method for making molten iron. |
摘要 |
A method for making molten iron includes the steps of feeding a raw material mixture containing an iron oxide material and a carbonaceous reductant into a heating reduction furnace to reduce iron oxide in the raw material mixture with the carbonaceous reductant into solid reduced iron; transporting the solid reduced iron to a melting furnace; and combustion of a carbonaceous material supplied as fuel to melt the solid reduced iron in the melting furnace for producing molten iron. After the metallization of the solid reduced iron is enhanced to at least 60%, the solid reduced iron is transported to the melting furnace. The amounts of oxygen and the carbonaceous material supplied to the melting furnace are controlled so that the secondary combustion ratio of Co gas in the melting furnace is reduced to 40% or less. The heat transfer efficiency of the secondary combustion heat to the molten iron is preferably increased to at least 60%. |
申请公布号 |
ZA200306673(B) |
申请公布日期 |
2004.07.21 |
申请号 |
ZA20030006673 |
申请日期 |
2003.08.27 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD.) |
发明人 |
ISAO KOBAYASHI;ITSUO MIYAHARA;HIDETOSHI TANAKA;KOJI TOKUDA |
分类号 |
C21B |
主分类号 |
C21B |
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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