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

Junmo Ahn; Jiajia Wu; Jaeheon Lee

doi:10.1016/j.hydromet.2019.05.001

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

Junmo Ahn, Jiajia Wu, Jaeheon Lee

Mining and Geological Engineering

Research output: Contribution to journal › Article

5 Scopus citations

Abstract

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 °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 °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.

Original language	English (US)
Pages (from-to)	54-62
Number of pages	9
Journal	Hydrometallurgy
Volume	187
DOIs	https://doi.org/10.1016/j.hydromet.2019.05.001
State	Published - Aug 2019

Keywords

Alternative lixiviants
Chalcopyrite
Hydrogen peroxide
MSA
Methanesulfonic acid

ASJC Scopus subject areas

Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.hydromet.2019.05.001

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Ahn, J., Wu, J., & Lee, J. (2019). Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide. Hydrometallurgy, 187, 54-62. https://doi.org/10.1016/j.hydromet.2019.05.001

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abstract = "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 °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 °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.",

keywords = "Alternative lixiviants, Chalcopyrite, Hydrogen peroxide, MSA, Methanesulfonic acid",

author = "Junmo Ahn and Jiajia Wu and Jaeheon Lee",

year = "2019",

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doi = "10.1016/j.hydromet.2019.05.001",

language = "English (US)",

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T1 - Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide

AU - Ahn, Junmo

AU - Wu, Jiajia

AU - Lee, Jaeheon

PY - 2019/8

Y1 - 2019/8

N2 - 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 °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 °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.

AB - 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 °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 °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.

KW - Alternative lixiviants

KW - Chalcopyrite

KW - Hydrogen peroxide

KW - MSA

KW - Methanesulfonic acid

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