发明名称 |
Gold recovery from refractory carbonaceous ores by pressure oxidation and thiosulfate leaching |
摘要 |
A process for recovering gold in which an ore slurry of refractory sulfidic and refractory carbonaceous ore having preg-robbing characteristics due to the presence of organic carbon is subjected to pressure oxidation in an autoclave. The oxidized ore slurry is mixed with a thiosulfate salt lixiviant, which mixture is maintained at a pH between 7 and 8.7 while the slurry is agitated in a stirred tank reactor system having agitated leach tanks. Gold is recovered from the gold-bearing leachate by cementation, adsorption on an adsorbent, or cyanidation.
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申请公布号 |
US5536297(A) |
申请公布日期 |
1996.07.16 |
申请号 |
US19950389016 |
申请日期 |
1995.02.10 |
申请人 |
BARRICK GOLD CORPORATION |
发明人 |
MARCHBANK, ANDREW R.;THOMAS, KENNETH G.;DREISINGER, DAVID;FLEMING, CHRISTOPHER |
分类号 |
C22B3/08;C22B3/46;C22B11/00;C22B15/00;(IPC1-7):C22B3/46 |
主分类号 |
C22B3/08 |
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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