发明名称 |
Recovery of precious metals from metal alloys produced aluminothermically from base metal smelter slag |
摘要 |
A method of recovering precious metals from metal alloys produced aluminothermically from base metal smelter slag, includes treating the metal alloy with aqueous sulphuric acid solution having a pH of not greater than about 2 to cause dissolution of nickel and/or cobalt and iron and to cause formation of hydrogen sulfide which reacts with copper in the metal alloy to form a copper sulfide precipitate containing at least one precious metal, and separating the copper sulphide precipitate containing at least one precious metal from the remaining solution containing cobalt sulphate and/or nickel sulphate and ferrous sulphate.
|
申请公布号 |
US6440194(B1) |
申请公布日期 |
2002.08.27 |
申请号 |
US20000716425 |
申请日期 |
2000.11.21 |
申请人 |
FENICEM MINERALS INC. |
发明人 |
KROFCHAK DAVID;BERARDI ROBERTO |
分类号 |
C22B3/08;C22B7/04;C22B11/02;(IPC1-7):C22B3/08;C22B11/00 |
主分类号 |
C22B3/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|