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Title:
METHOD FOR CARBON-CATALYSED THIOSULFATE LEACHING OF GOLD-BEARING MATERIALS
Document Type and Number:
WIPO Patent Application WO/2021/001690
Kind Code:
A3
Abstract:
The present disclosure is directed to a thiosulfate leaching process for precious metal recovery. In the process, a precious metal is leached from a precious metal-bearing material by contacting the precious metal-bearing material with a particulate carbon-based material, a thiosulfate, an anion exchange resin and an oxidant to form a slurry comprising the leached precious metal. The particulate carbon-based materials serves as a catalyst for dissolution rates and precious metal recoveries during the leaching.

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Inventors:
OLVERA OLMEDO OSCAR (CA)
DOMANSKI DANIEL (CA)
Application Number:
PCT/IB2020/000795
Publication Date:
February 04, 2021
Filing Date:
January 21, 2020
Export Citation:
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Assignee:
BARRICK GOLD CORP (CA)
International Classes:
C22B3/12; B01D11/02; C22B3/42; C22B3/44; C22B11/00
Foreign References:
US10161016B22018-12-25
US20020092377A12002-07-18
US5536297A1996-07-16
US6344068B12002-02-05
US5354259A1994-10-11
US4778519A1988-10-18
US20030051581A12003-03-20
US7985277B22011-07-26
CA2209559A11998-01-16
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