2004•Hydrometallurgy of ChinaRequires access

Examination on Solidification Roast and Cyanide Leaching of Gold Concentration Containing Arsenic and Sulphur

Yanmin Zhang

Abstract

Mineral components and solidification roast and leaching gold process conditions from the concentration containing arsenic and sulphur are introduced. Leaching mechanisms is discussed also. The results show that for gold concentrate solidification roasted, arsenic and sulphur solidification rate is 90%. Gold leaching rate can reach 88.4% if mix oxidant(H_2O_2+KMnO_4) as required and leaching aid(G) are used when gold is leaching from the roasted product with cyanide.

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Key concepts: Leaching (pedology), Arsenic, Sulfur, Cyanide, Gold cyanidation, Chemistry, Gold ore, Metallurgy