Process for recovering gold from ores

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United States of America Patent

PATENT NO 11041227
APP PUB NO 20190292628A1
SERIAL NO

16302204

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Abstract

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A process for recovering gold from a gold-containing raw material, comprising leaching the gold-containing material with an aqueous solution comprising elemental bromine and bromide source to form a pregnant leach solution with the gold dissolved therein; separating said pregnant leach solution from the gold-depleted raw material, removing elemental bromine from said pregnant leach solution, extracting the gold from the pregnant leach solution in an acidic environment into an organic extractant, to form a gold-loaded extract and bromide-containing raffinate, stripping the extract with an alkaline aqueous solution to form a gold-bearing aqueous solution, generating gold (Au0) and treating bromide-containing stream(s) to produce recyclable elemental bromine.

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Patent Owner(s)

Patent OwnerAddress
BROMINE COMPOUNDS LTDP O BOX 180 BE'ER-SHEVA 84101

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bergstein, Freiberg Mira Omer, IL 5 14
Fabian, Tal Kiryat Tivon, IL 1 0
Krumbein, Rubin Sharon Kibbutz Naan, IL 3 2
Larmour-Ship, Keren Mitzpe Netofa, IL 2 0
Miller, Alan Haifa, IL 47 1132
Shandalov, Elizabeta Omer, IL 2 0

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