D. Calla‑Choque, N. A. Trejo‑Hernández
Chalcopyrite is one of the most abundant copper minerals found in the Earth’s crust, typically processed through pyrometallurgical methods. This study investigates the effect of pH on copper leaching in a PO4 3−–H2O2 system, addressing the challenges posed by the high chemical stability of chalcopyrite. The results demonstrate that copper recovery is strongly dependent on both pH and H2O2 concentration. Specifically, at a pH of 3, increasing the H2O2 concentration to 0.5 M significantly enhances the kinetics of chalcopyrite oxidation at low solid-to-liquid (S/L) ratios (20–50 g/L), resulting in rapid and efficient copper recovery exceeding 90%. However, at higher S/L ratios (100–200 g/L), both the kinetics and overall efficiency decrease. Additionally, iron dissolution remained below 3%, with phosphate effectively enhancing copper recovery while minimizing iron solubility. These findings indicate a promising avenue for improving copper extraction processes from chalcopyrite using hydrometallurgical methods.
@article{cc257b8c-e835-4562-8ba1-94623e0e6834,
title={2025 Calla Choque Phosphate Leaching of Chalcopyrite},
author={D. Calla‑Choque and N. A. Trejo‑Hernández},
year={2026},
language={en}
}TY - JOUR TI - 2025 Calla Choque Phosphate Leaching of Chalcopyrite AU - D. Calla‑Choque AU - N. A. Trejo‑Hernández PY - 2026 LA - en ER -
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