Method of removal of impurities from gold concentrate containing sulfides
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United States of America Patent
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Mar 1, 2005
Grant Date -
N/A
app pub date -
Apr 26, 2002
filing date -
Aug 12, 1999
priority date (Note) -
Expired
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Abstract
The present invention focuses on the method for the removal of impurities, such as tellurium and bismuth, from gold concentrate containing sulfides. According to the present method, the impurities are leached from the gold concentrate with the aid of an acidic aqueous solution, at an elevated temperature, whereby the impurities dissolve and the gold remains in the concentrate.
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