2006•Nonferrous MetalsRequires access

Study on Sphalerite Concentrate with High Indium and Iron Content by Acid Leaching under Pressure

Yan Jiang-feng

Abstract

A new technology of extracting indium and zinc was developed from and high indium and high iron sphalerite by acid leaching under pressure.The effects of granularity,sulphuric acid dosage,leaching time and oxygen partial pressure on leaching rate of indium and iron were investigated.The results show that adopting two-step pressurized acid leaching not only assures high leaching rates of zinc and indium,but also realizes selectivity leach of indium and iron and reduces acidity of leach liquor.

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Key concepts: Sphalerite, Indium, Leaching (pedology), Zinc, Oxygen pressure, Chemistry, Metallurgy, Lixiviant