Recovery of gold and silver from complex refractory sulphide ores by cyanidisation and oxidation with peroxides
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United States of America Patent
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Nov 16, 1993
Grant Date -
N/A
app pub date -
Dec 24, 1991
filing date -
Apr 28, 1989
priority date (Note) -
Expired
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Abstract
A method of recovering precious metals from a silver bearing ore containing polybasite, pearcite, pyrargyrite, tetrahedrite or argentite by mixing the ore with an alkali metal or alkaline earth metal peroxide in slurry or solid, leaching the ore with a cyanide solution, and recovering the precious metals from the cyanide solution.
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