A review on the electrochemical analysis of sulfide minerals-Pyrite, chalcopyrite, and galena

Abstract

This review provides an overview of the electrochemical analysis of sulfide minerals-pyrite, chalcopyrite, and galena-from 2020 to 2024 and focuses on applications in flotation, leaching, and weathering. Key electrochemical techniques such as open circuit potential, cyclic voltammetry, linear sweep voltammetry, Tafel polarization, and electrochemical impedance spectroscopy have been extensively employed to elucidate the surface chemistry, redox processes, and reaction kinetics of these minerals. This research focuses on pyrite oxidation related to acid mine drainage, flotation, and gold leaching; chalcopyrite passivation during leaching; and galena oxidation in relation to leaching and weathering. Additionally, interactions between sulfide minerals and reagents, as well as galvanic interactions in flotation processes, have also been reviewed. This review can enhance the understanding of electron transfer to and from sulfide minerals during redox processes in flotation, leaching, and weathering.

Keywords

Electrochemical analysis / Sulfide minerals / Pyrite / Chalcopyrite / Galena

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