Barrick Gold Corporation
Method for pre-treatment of gold-bearing oxide ores

Last updated:

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