2003•Nonferrous MetalsRequires access

Roasting and Cyanide Leaching Process Study on As, Sb and C Content Refractory Gold Concentrate

Yun Wang

Abstract

The gold extraction recovery from Zhenyuan arsenic and antimony bearing carbnous concentrate with cyanide leaching process is less than 10%, and it can be raised to 73.2% with roasting-cyandiation process. The gold recovery can be improved further to 90.4% with antimony removal with sodium sulfide, followed by roasting and cyanide leaching process. The antimony concentrates can be sold as by product.

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Key concepts: Roasting, Antimony, Gold cyanidation, Sodium cyanide, Leaching (pedology), Arsenic, Cyanide, Sulfide