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) |
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Pages (from-to) | 54-62 |
Number of pages | 9 |
Journal | Hydrometallurgy |
Volume | 187 |
DOIs | |
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