Barrick Gold Corporation
Method for pre-treatment of gold-bearing oxide ores
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Abstract:
The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
Status:
Grant
Type:
Utility
Filling date:
11 Oct 2017
Issue date:
24 Mar 2020