Hydrothermal oxidative leaching of Cu and Se from copper anode slime in a diluted H2SO4 solution

Shuai Rao,Dongxing Wang,Hongyang Cao,Wei Zhu,Lijuan Duan,Zhiqiang Liu

Separation and Purification Technology（2022）

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摘要

•Above 99% of Cu and Se were extracted from copper anode slime by oxidation pressure leaching.•H2SO4 concentration exerted a significant on the transformation pathway of selenide.•Cu2Se was directly oxidized into CuSeO3·2H2O with weak pH atmosphere.•The oxidation of Ag2Se was more difficult than that of Cu2Se.

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关键词

Copper anode slime,Selenide,Oxidation pressure leaching,Transformation mechanism

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