GOLD – CYANIDE

BY MATTHEW BRACERESEARCHERS at Australia's Hydrometallurgy CRC (Cooperative Research Centre) have successfully recovered gold from solution using resins in an effort to reduce the industry's reliance on cyanide extraction. Thiosulphate is seen to be an environmentally friendly alternative to cyanide for gold extraction so the researchers have been looking at methods of recovery after gold is leached with thiosulphate. Research into cyanide alternatives is important because of the problems associated with some ore types and cyanide's poor public image. While the ...


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