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US 2012/0067170 A1Published application
Extraction of gold from cathode associated gold concentrates
AssigneePrecious Metals Recovery Pty Ltd
InventorDean R. BUTLER
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Abstract
The invention involves a method for recovering gold from a gold concentrate comprising: dissolving gold from the concentrate in an aqueous liquor to provide a gold liquor; subjecting the gold liquor to electrolysis in an electrowinning cell to provide cathode-associated gold material; leaching the cathode associated gold material in an aqueous liquor under reducing conditions to provide a treated solid residue; and smelting the treated solid residue to recover gold.
Claims40
A method for recovering gold from a gold concentrate comprising:
- dissolving gold from the concentrate in an aqueous liquor to provide a gold liquor;
- subjecting the gold liquor to electrolysis in an electrowinning cell to provide cathode-associated gold material;
- leaching the cathode associated gold material in an aqueous liquor under reducing conditions to provide a treated solid residue;
- and
- smelting the treated solid residue to recover gold.
2 more elements
(canceled)
40-43. (canceled)
Dependencies are inferred from the claim text.