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

Junmo Ahn, Jiajia Wu, Jaeheon Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)54-62
Number of pages9
JournalHydrometallurgy
Volume187
DOIs
StatePublished - Aug 1 2019

Fingerprint

Hydrogen peroxide
Hydrogen Peroxide
Leaching
Acids
Copper
Organic acids
Oxidants
Chemical reactions
Solubility
Activation energy
Metals
methanesulfonic acid
chalcopyrite

Keywords

  • Alternative lixiviants
  • Chalcopyrite
  • Hydrogen peroxide
  • Methanesulfonic acid
  • MSA

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide. / Ahn, Junmo; Wu, Jiajia; Lee, Jaeheon.

In: Hydrometallurgy, Vol. 187, 01.08.2019, p. 54-62.

Research output: Contribution to journalArticle

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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.

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