发明名称 |
Menetelmä kuparin ja jalometallien talteenottamiseksi |
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. |
申请公布号 |
FI20135630(A) |
申请公布日期 |
2014.12.08 |
申请号 |
FI20130005630 |
申请日期 |
2013.06.07 |
申请人 |
OUTOTEC (FINLAND) OY |
发明人 |
VALKAMA, KARI;SINISALO, PIA;KARONEN, JANNE;HIETALA, KARI |
分类号 |
C22B15/00;C22B3/00;C22B3/26;C22B11/00 |
主分类号 |
C22B15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|