发明授权
- 专利标题: Method of producing metal from metal oxides
- 专利标题(中): 从金属氧化物生产金属的方法
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申请号: US669863申请日: 1976-03-24
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公开(公告)号: US4072504A公开(公告)日: 1978-02-07
- 发明人: Orn G. Perdahl , Sven O. Santen
- 申请人: Orn G. Perdahl , Sven O. Santen
- 申请人地址: SW Goteborg
- 专利权人: Aktiebolaget Svenska Kullagerfabriken
- 当前专利权人: Aktiebolaget Svenska Kullagerfabriken
- 当前专利权人地址: SW Goteborg
- 优先权: SW7301099 19730126
- 主分类号: C21B5/02
- IPC分类号: C21B5/02 ; C21B11/02 ; C21B13/00 ; C21B13/14 ; C22B5/00 ; C21B11/00
摘要:
The present invention relates to a method for producing metal from metal oxides, especially iron from iron oxides by a pre-reduction as well as final reduction wherein the pre-reduced oxidic material as well as optional slag formers and optional recirculated gas are injected at the bottom through tuyeres or the like by means of a carrier gas, inert or reducing of a reactor resembling a shaft furnace filled with solid reducing agent during simultaneous supplying of energy, e.g. in the form of oxygen gas and hydrocarbon, the oxidic material being blown against a pillar of solid reducing agent at such a level that essentially all injected solid material is retained (e.g. by galling) on the lower end of the pillar to bring the oxidic material to instantaneous final reduction, melting and possible alloying of the reduced metal.
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