发明授权
US4483827A Hydrometallurgical process for the recovery of valuable metals from
sulfidic, silicate-containing raw materials
失效
用于从硫化物,含硅酸盐的原料中回收有价金属的湿法冶金工艺
- 专利标题: Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials
- 专利标题(中): 用于从硫化物,含硅酸盐的原料中回收有价金属的湿法冶金工艺
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申请号: US396461申请日: 1982-07-08
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公开(公告)号: US4483827A公开(公告)日: 1984-11-20
- 发明人: Seppo O. Heimala
- 申请人: Seppo O. Heimala
- 申请人地址: FIX Outokumpu
- 专利权人: Outokumpu Oy
- 当前专利权人: Outokumpu Oy
- 当前专利权人地址: FIX Outokumpu
- 优先权: FIX812642 19810826
- 主分类号: B03B9/00
- IPC分类号: B03B9/00 ; B03D1/02 ; C01G1/00 ; C22B3/00 ; C22B3/08 ; C22B15/00 ; C22B21/00 ; C22B26/22 ; C22B47/00 ; C01G3/00 ; C01G9/00 ; C01G45/00 ; C01G53/00
摘要:
The invention relates to a process for the recovery of valuable metals from sulfidic, silicate-containing raw materials by slurrying the raw material in water, by subjecting the slurry to a selective leach under atmospheric conditions and in an acidic milieu, and by separating the valuable-metal containing solution from the solid leach residue.When the leach is carried out by introducing an oxygen-bearing gas into the slurry which contains finely-divided sulfide and carbon, the acidity of the slurry drops in a controlled manner so that a high efficiency of oxygen, and a high selectivity of the leach as regards valuable metals, are obtained. Owing to the presence of carbon the oxygen is reduced very easily and so oxygen efficiency is high and the rate of dissolving of the valuable metals increases in the slurry mixture.
公开/授权文献
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