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GOLD RECOVERY FROM REFRACTORY CARBONACEOUS ORES BY PRESSURE OXIDATION AND THIOSULFATE LEACHING
GOLD RECOVERY FROM REFRACTORY CARBONACEOUS ORES BY PRESSURE OXIDATION AND THIOSULFATE LEACHING
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机译:加压氧化法和硫代硫酸盐浸提法从难处理碳矿石中回收金
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摘要
A process for recovering gold in which an ore slurry of refractory sulfidic and refractory carbonaceous ore having preg-robbing characteristics due to the presence of organic carbon is subjected to pressure oxidation in an autoclave. The oxidized ore slurry is mixed with a thiosulfate salt lixiviant, which mixture is maintained at a pH between 7 and 8.7 while the slurry is agitated in a stirred tank reactor system having agitated leach tanks. Gold is recovered from the gold-bearing leachate by cementation, adsorption on an adsorbent, or cyanidation.
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