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

被引：39
|
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
收藏
页码：54 / 62
页数：9
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