发明名称 |
Precious metal recovery using thiocyanate lixiviant |
摘要 |
Precious metal-containing mineral material is subjected to an acidic thiocyanate leach to dissolve the precious metal as a precious metal-thiocyanate complex. A feed of the thiocyanate leach solution may include a large molar ratio of ferric iron to thiocyanate. Precious metal may be removed from pregnant thiocyanate leach solution, such as by transferring precious metal from precious metal-thiocyanate complex to precious metal-cyanide complex and then loading the precious metal-cyanide complex onto an adsorbent material. Remaining cyanide in the thiocyanate leach solution may be converted to thiocyanate for additional leaching of precious metal.
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申请公布号 |
US7285256(B2) |
申请公布日期 |
2007.10.23 |
申请号 |
US20030651184 |
申请日期 |
2003.08.28 |
申请人 |
NEWMONT USA LIMITED |
发明人 |
WAN RONG YU;LEVIER K. MARC |
分类号 |
C22B11/00;C01G55/00;C22B11/08;C22B15/00 |
主分类号 |
C22B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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