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Acidic Ferric Sulfate Leaching of Primary Copper Sulfides Under Recycle Solution Conditions Observed in Heap Leaching: Effect of Major Species

G.P. O’Malley, A.N. Nikoloski

2023encopper extractionheap leachinghydrometallurgychalcopyriteferric sulfate

Abstract

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This paper explores the leaching of copper from low-grade chalcopyrite ores using acidic ferric sulfate under conditions that simulate recycle heap leaching. The objective is to examine how major cationic species, such as Fe3+/2+, Mg2+, Cu2+, and Al3+, along with the anionic SO42− species, influence copper extraction efficiency. Utilizing experimental methods that manipulated the concentrations of these species, significant findings emerged indicating that alterations in sulfate, iron, and aluminum concentrations markedly impacted copper extraction rates. While copper concentration exhibited a slight influence, magnesium levels were found to have negligible effects. Additionally, variations in iron and aluminum influenced sulfate concentration, with sulfate ions demonstrating the most substantial effect on copper extraction in recycle leach scenarios. These results underscore the critical role of solution composition in optimizing the heap leaching process for copper recovery from chalcopyrite.

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Cite This Work

@article{39726720-8d0e-4185-8828-713dc695a8d6,
  title={Acidic Ferric Sulfate Leaching of Primary Copper Sulfides Under Recycle Solution Conditions Observed in Heap Leaching: Effect of Major Species},
  author={G.P. O’Malley and A.N. Nikoloski},
  year={2023},
  language={en}
}
TY  - JOUR
TI  - Acidic Ferric Sulfate Leaching of Primary Copper Sulfides Under Recycle Solution Conditions Observed in Heap Leaching: Effect of Major Species
AU  - G.P. O’Malley
AU  - A.N. Nikoloski
PY  - 2023
LA  - en
ER  -

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