Extraction methods from refractory ores

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United States of America Patent

PATENT NO 11401578
SERIAL NO

16349862

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Abstract

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A method for extracting and separating Gold, Silver, Copper, Zinc and/or Lead from an Arsenic-containing ore, concentrate or tailings characterized in that the extraction is carried by roasting in the presence of a calcium-containing material and at least one of an alkali metal halide and alkaline metal halide. In the method, Arsenic remains immobilized in the extraction residue.

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Patent Owner(s)

Patent OwnerAddress
TCM RESEARCH LTDINVENT DCU DUBLIN CITY UNIVERSITY GLASNEVIN DUBLIN 9

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Terekhov, Dmitri S Ontario, CA 10 16
van, der Linde Colwyn S Boksburg, ZA 1 0

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