Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide

被引：42

作者：

Ahn, Junmo ^{[1
]}

Wu, Jiajia ^{[1
]}

Lee, Jaeheon ^{[1
]}

机构：

[1] Univ Arizona, Dept Min & Geol Engn, Tucson, AZ 85721 USA

来源：

HYDROMETALLURGY | 2019年 / 187卷

关键词：

Chalcopyrite; Alternative lixiviants; MSA; Methanesulfonic acid; Hydrogen peroxide; FERRIC ION; PART I; DISSOLUTION; PASSIVATION; CHLORIDE; KINETICS; SULFATE; THERMODYNAMICS; COPPER;

D O I：

10.1016/j.hydromet.2019.05.001

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Methanesulfonic acid (MSA) is an organic acid and was used to leach copper from chalcopyrite. MSA is a strong acid with higher solubility of various metals. A suite of leaching tests of chalcopyrite at 75 degrees C with various lixiviants exhibited that MSA showed the highest copper extraction of 47% at 96 h with 30 g/L MSA and 5 g/L ferric. The copper extraction increased to over 90% with hydrogen peroxide as an oxidant at 75 degrees C. The activation energy of the reaction with MSA and hydrogen peroxide was calculated to be 39.9 kJ/mol, indicating that the reaction is chemical reaction controlled.

引用

页码：54 / 62

页数：9

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