Treatment of refractory carbonaceous sulfide ores for gold recovery
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United States of America Patent
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May 8, 1990
Issued Date -
N/A
app pub date -
Sep 13, 1989
filing date -
Oct 31, 1988
priority date (Note) -
Expired
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Abstract
Refractory carbonaceous sulfide ores are treated in a manner so as to improve gold recovery by a treatment in specific combination of steps whereby the ore is treated with chlorine after pretreatment and before cyanidation; the particular steps in the treatment of the ore have been found to be necessary as the conventional pretreatment will not improve the yields on any economic basis.
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