Sulphuric acid leaching of mechanically activated chalcopyrite


  • Danny Guzmán University of Atacama
  • Stella Ordoñez University of Santiago de Chile
  • Claudio Aguilar Southern University of Chile
  • Paula Rojas Pontifical Catholic University of Valparaíso
  • Daniel Serafini University of Santiago de Chile
  • Washington Silva University of Atacama
  • Claudio Díaz University of Atacama



mechanical activation, CuFeS2, X-ray diffraction, leaching


In order to study the effect of mechanical activation on the sulphuric acid leaching of CuFeS2, four samples were milled using an Atritor mill during 1, 5, 8, and 15 h. The powders were microstructural and morphologically characterized by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The samples were leached using a solution of H2SO4 (0.54 M) at 298 K. The Cu+2 concentration was determined by means of atomic absorption spectrophotometry. The results obtained indicated that the increase in milling time results in increased recovery of Cu. The maximum recovery of Cu was 38.2 % for a milling time of 15 h.

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Author Biographies

Danny Guzmán, University of Atacama

Metallurgy Department.

Stella Ordoñez, University of Santiago de Chile

Department of Metallurgical Engineering.

Claudio Aguilar, Southern University of Chile

Institute of Thermomechanical Materials and Processes.

Paula Rojas, Pontifical Catholic University of Valparaíso

School of Mechanical Engineering.

Daniel Serafini, University of Santiago de Chile

Physics department.

Washington Silva, University of Atacama

Metallurgy department.

Claudio Díaz, University of Atacama

Physics department.


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How to Cite

Guzmán, D., Ordoñez, S., Aguilar, C., Rojas, P., Serafini, D., Silva, W., & Díaz, C. (2013). Sulphuric acid leaching of mechanically activated chalcopyrite. Revista Facultad De Ingeniería Universidad De Antioquia, (56), 32–39.

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