Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption
Patent
·
OSTI ID:1089418
A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.
- Research Organization:
- Virginia Polytechnic Institute & State University (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-02NT41607; FC26-05NT42457
- Assignee:
- NETL
- Patent Number(s):
- 8,500,847
- Application Number:
- 13/094,139
- OSTI ID:
- 1089418
- Country of Publication:
- United States
- Language:
- English
Cyanide detoxification process
|
patent | April 2003 |
Recovery of precious metals
|
patent | August 1985 |
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