Method for recovering precious metals and copper from leach solutions

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United States of America Patent

PATENT NO 9051625
APP PUB NO 20130091990A1
SERIAL NO

13524907

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Abstract

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The present disclosure is directed to a process for recovering a precious metal from a pregnant leach solution using a resin extractant. The precious metal is eluted from the loaded resin using an eluant comprising trithionate. The barren resin is contacted with a sulfide, bisulfide, and/or polysulfide to convert sorbed trithionate to thiosulfate. The desorbed thiosulfate is contacted with an oxidant and converted to trithionate for eluant recycle.

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Patent Owner(s)

Patent OwnerAddress
BARRICK GOLD CORPORATION161 BAY STREET SUITE 3700 TORONTO M5J 2S1

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choi, Yeonuk Oakville, CA 18 80
Langhans,, Jr John William Spring Creek, US 3 20
Wang, Qiankun Pitt Meadows, CA 5 11

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