Chalcopyrite Leaching in Acidic Chloride Solution without Sulphates

Authors

  • Eduardo Luis Recalde Chiluiza Luis Recalde Chiluiza 1. Universidad de Santiago de Chile 2. Escuela Superior Politécnica del Litoral, ESPOL, Ecuador
  • Patricio Navarro Donoso Universidad de Santiago de Chile

DOI:

https://doi.org/10.29356/jmcs.v60i4.116

Keywords:

Chalcopyrite, Chloride, Ferrous, Leaching, Passivation

Abstract

Chalcopyrite leaching in acidic chloride solution without sulphates. The effect of dissolved oxygen and ferrous/ferric/cupric ions in solution on the leaching behavior of chalcopyrite and the phenomenology of the passivating layer formation on the chalcopyrite surface in an aqueous acidic chlorinated medium with dissolved oxygen and without sulphate are studied. The research was performed using pure chalcopyrite samples with particle sizes of +45 to -75 microns (-200+325 mesh). It was found that the formation of hydrogen sulfide (H2S) at room temperature and atmospheric pressure is a possible precursor of passivating species that prevent chalcopyrite dissolution.

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Author Biographies

Eduardo Luis Recalde Chiluiza Luis Recalde Chiluiza, 1. Universidad de Santiago de Chile 2. Escuela Superior Politécnica del Litoral, ESPOL, Ecuador

  1. Department of Metallurgical Engineering
  2. Facultad de Ingeniería en Ciencias de la Tierra, Campus Gustavo Galindo

Patricio Navarro Donoso, Universidad de Santiago de Chile

Department of Metallurgical Engineering

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Published

2017-10-12

Issue

Vol. 60 No. 4 (2016): Regular Issue

Section

Regular Articles

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