发明名称 |
PROCESSO PARA A FUNDICAO E REDUCAO CONTINUAS DE MINERIO DE FERRO E UNIDADE DE FUNDICAO E REDUCAO CONTINUAS DE MINERIO DE FERRO |
摘要 |
<p>A process for continuously smelting iron ore by use of coal to yield molten iron or semi-steel is disclosed. It comprises establishing a melt (38) covered by slag (8); inducing the slag and the molten iron to flow countercurrently to one another, toward opposite ends of the smelter (2); maintaining iron oxide-reducing conditions in that zone (12) of the smelter towards which the slag flows; maintaining carbon-oxidizing conditions in that zone (10) of the smelter towards which the iron flows; tapping the slag from the reducing zone end (12) of the smelter; tapping the iron from the other end (10); and adding to both zones iron ore, coal, oxygen, and flux sufficient to maintain in the tapped slag (44) an FeO content of about 5 weight percent or less and maintain in the tapped iron (46) a carbon content of about 0.5 to 5 weight percent. <IMAGE></p> |
申请公布号 |
BR9201979(A) |
申请公布日期 |
1993.01.05 |
申请号 |
BR19929201979 |
申请日期 |
1992.05.26 |
申请人 |
STEEL TECHNOLOGY CORPORATION |
发明人 |
RICHARD J. FRUEHAN;JAMES H. COX;F. ELLIOT |
分类号 |
C21B11/08;C21B13/00;F27B3/04;F27B3/10;(IPC1-7):C21B11/00 |
主分类号 |
C21B11/08 |
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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