发明授权
- 专利标题: Process for recovering valuable metals from an iron dust
- 专利标题(中): 从铁粉中回收贵重金属的工艺
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申请号: US2353申请日: 1993-01-06
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公开(公告)号: US5279643A公开(公告)日: 1994-01-18
- 发明人: Yasuo Kaneko , Tsuneyuki Inoue
- 申请人: Yasuo Kaneko , Tsuneyuki Inoue
- 申请人地址: JPX Ibaraki
- 专利权人: Kaneko; Yasuo
- 当前专利权人: Kaneko; Yasuo
- 当前专利权人地址: JPX Ibaraki
- 优先权: JPX4-026159 19920117; JPX4-163662 19920529
- 主分类号: C21B3/04
- IPC分类号: C21B3/04 ; C22B7/02 ; C22B13/02 ; C22B19/04 ; C21B13/02
摘要:
A process for recovering valuable metals from an iron dust using a shaft furnace is disclosed. The iron dust is agglomerated and supplied into a the shaft furnace together with a lump coke and a flux. Valuable metal oxides contained in the iron dust are reduced in this shaft furnace. Volatile metals containing zinc and lead among the valuable metals thus reduced are volatilized within the shaft furnace and reoxidized, and then discharged from the shaft furnace together with an exhaust gas so as to be recovered as a crude zinc oxide. The reduced metal iron and slag are accumulated on a bottom portion of the shaft furnace in their molten states, and then separated and recovered.
公开/授权文献
- US4782641A Scissors truss connector plates 公开/授权日:1988-11-08