Electrochemical behaviour of sulphide minerals under open circuit conditions

Rao, M. ; Yelloji, K. ; Natarajan, K. A. (1986) Electrochemical behaviour of sulphide minerals under open circuit conditions Transactions of the Indian Institute of Metals, 39 (6). pp. 582-591. ISSN 0972-2815

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Abstract

The following galvanic series increasing activity, holds in a 2.0 pH H2SO4 medium: pyrite, molybdenite, chalcopyrite, sphalerite, pyrrhotite, galena. Based on the combination potential values, the probable anodic (oxidation) reaction in a bimineral contact is predicted. When 2 sulfide minerals are in contact, the active mineral undergoes oxidation resulting in the formation of corroded surfaces as is observed by SEM. The galvanic current in a bimineral couple depends on the p.d. between the anode and the cathode.

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