发明授权
- 专利标题: Process for the direct reduction of metal oxides
- 专利标题(中): 直接还原金属氧化物的方法
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申请号: US458096申请日: 1974-04-05
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公开(公告)号: US3953196A公开(公告)日: 1976-04-27
- 发明人: Richard F. Obenchain
- 申请人: Richard F. Obenchain
- 专利权人: Obenchain Richard F
- 当前专利权人: Obenchain Richard F
- 主分类号: C22B5/10
- IPC分类号: C22B5/10 ; C21B11/02 ; C21B13/00 ; C21B13/02 ; C21B13/14
摘要:
Metal oxides are directly reduced by charging metal oxide-carbonaceous agglomerates to a shaft furnace, passing said pellets downwardly countercurrent to a flow of hot gases in a reduction zone, wherein the agglomerates are heated to 2000.degree.-2400.degree.F. and reduction effected while the agglomerates maintain their integrity, and then transferring the reduced pellets to a melting zone. In the melting zone, having a controlled atmosphere, the pellets melt and a mass of molten metal and slag is formed and then discharged from the melting zone.
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