Abstract
A previous investigation showed that corrosion currents estimated from polarization curves for the pyrrhotite - grinding media system under abrasion correlated well with corrosion currents estimated from marked ball wear test data by applying Faraday’s law. Freshly abraded metal debris were magnetically attracted to pyrrhotite and lowered the rest potentials of the mineral particles, thereby affecting the corrosive wear. The investigation was extended to explore the interactions between a non-magnetic sulfide mineral, pyrite, and abraded metal debris and their effects on the corrosive wear mechanism. The electrochemical behavior of a three-electrode system involving pyrrhotite, pyrite, and grinding media was also investigated as a first step toward elucidating the nature of interactions that occur in grinding complex sulfide ores.
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