发明公开
EP3004405A1 METHOD OF RECOVERING COPPER AND PRECIOUS METALS
有权
VERFAHREN ZUR WIEDERGEWINNON VON KUPFER UND EDELMETALLEN
- 专利标题: METHOD OF RECOVERING COPPER AND PRECIOUS METALS
- 专利标题(中): VERFAHREN ZUR WIEDERGEWINNON VON KUPFER UND EDELMETALLEN
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申请号: EP14739499.3申请日: 2014-06-06
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公开(公告)号: EP3004405A1公开(公告)日: 2016-04-13
- 发明人: VALKAMA, Kari , SINISALO, Pia , KARONEN, Janne , HIETALA, Kari
- 申请人: Outotec (Finland) Oy
- 申请人地址: Rauhalanpuisto 9 02230 Espoo FI
- 专利权人: Outotec (Finland) Oy
- 当前专利权人: Outotec (Finland) Oy
- 当前专利权人地址: Rauhalanpuisto 9 02230 Espoo FI
- 代理机构: Kolster Oy Ab
- 优先权: FI20135630 20130607
- 国际公布: WO2014195586 20141211
- 主分类号: C22B3/26
- IPC分类号: C22B3/26 ; C22B3/00 ; C22B15/00
摘要:
Provided is a method of recovering copper and one or more precious metals comprising leaching copper-bearing ore and/or concentrate under atmospheric or slightly pressurized conditions at a temperature below the boiling point of the leach solution in a sulfuric acidic solution in the presence of one or more alkali metal or alkali earth metal halides, whereby the total halide concentration is from 30 to 115 g/L, to dissolve copper and to obtain a leaching liquor comprising copper, sulfur species, and halides in solution. The leaching liquor is then subjected to a solid-liquid separation after which a first aqueous pregnant leach solution and a copper depleted leaching residue are obtained. Copper is purified by solvent extraction from the first aqueous pregnant leach solution to obtain a first copper-containing loaded organic solution and a first aqueous raffinate. The copper containing loaded organic solution is stripped and copper is recovered.
公开/授权文献
- EP3004405B1 METHOD OF RECOVERING COPPER AND PRECIOUS METALS 公开/授权日:2017-09-27
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