Process for recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates
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United States of America Patent
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Aug 9, 2016
Grant Date -
Nov 19, 2015
app pub date -
May 13, 2014
filing date -
May 13, 2014
priority date (Note) -
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Abstract
A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subjecting the feed material to pressure oxidation in the presence of surfactant and a halogen to produce a product slurry. The process also includes subjecting the product slurry to liquid/solid separation to obtain a pressure oxidation filtrate and solids comprising at least one of a compound of arsenic and a compound of antimony, and recovering copper from the pressure oxidation filtrate.
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