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 | |
| State | Published - Aug 1 2019 |
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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 journal › Article
}
TY - JOUR
T1 - Investigation on chalcopyrite leaching with methanesulfonic acid (MSA) and hydrogen peroxide
AU - Ahn, Junmo
AU - Wu, Jiajia
AU - Lee, Jaeheon
PY - 2019/8/1
Y1 - 2019/8/1
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 - Methanesulfonic acid
KW - MSA
UR - http://www.scopus.com/inward/record.url?scp=85065712639&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065712639&partnerID=8YFLogxK
U2 - 10.1016/j.hydromet.2019.05.001
DO - 10.1016/j.hydromet.2019.05.001
M3 - Article
AN - SCOPUS:85065712639
VL - 187
SP - 54
EP - 62
JO - Hydrometallurgy
JF - Hydrometallurgy
SN - 0304-386X
ER -