Upgrading of precious metals concentrates and residues

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9194022
APP PUB NO 20130177487A1
SERIAL NO

13806106

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Abstract

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A process for upgrading a precious metals-containing concentrate or residue results in near-quantitave removal of base metals and several impurity elements at elevated temperatures. The precious metals-containing concentrate or residue is exposed to oxygen or an oxygen-containing environment in an oxidative pre-treatment step followed by treatment with a hydrochlorinating agent in a hydrochlorination step to form an upgraded concentrate or residue.

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Patent Owner(s)

Patent OwnerAddress
RUSTENBURG PLATINUM MINES LIMITED55 MARSHALL STREET JOHANNESBURG 2001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bryson, Leslie James Benoni, ZA 2 1
Davis, Boyd R Kingston, CA 9 134
Mtotywa, Victor Loyiso Vusumzi Midrand, ZA 1 1
Nelson, Lloyd Robert Johannesburg, ZA 1 1
Roy, Alain Kingston, CA 13 422
Woollam, Stephen Farring Johannesburg, ZA 1 1

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