Extraction of gold from cathode associated gold concentrates

Details Extraction of gold from cathode associated gold concentrates Extraction of gold from cathode associated gold concentrates

C - Chemistry, Metallurgy

22

B

C22B 3/00 (2006.01) C22B 11/00 (2006.01)

Patent

CA 2760345

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.

L'invention concerne un procédé de récupération d'or à partir d'un concentré d'or, comprenant : la dissolution de l'or du concentré dans une liqueur aqueuse pour obtenir une liqueur d'or; la soumission de la liqueur d'or à une électrolyse dans une cellule d'extraction électrolytique pour obtenir un matériau en or associé à une cathode; la lixiviation du matériau en or associé à une cathode dans une liqueur aqueuse dans des conditions réductrices pour obtenir un résidu solide traité; et la fusion du résidu solide traité pour récupérer l'or.

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