2009•Yunnan MetallurgyRequires access

Research on Acid Leaching of Yunnan Low-grade Oxidized Copper Ore

Guowen Wang

Abstract

The oxidation rate of Yunnan copper ore is 90.64%,in which the main copper minerals is dioptase and cuprite,and those minerals are difficulty to be leached.Base on results of copper phase analysis and comparison of acid leaching and ammonia leaching,the test of acid leaching is carried out for which the dosage of sulfuric acid is 80kg/t,grind size is 54.5% of-200 mesh,leaching time is 100min,the leaching rate of Cu could reach 71.68%.

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Key concepts: Cuprite, Leaching (pedology), Copper, Sulfuric acid, Lixiviant, Chemistry, Metallurgy, Ammonia