Effect of cathodic polarization on the floatability of chalcopyrite in the absence of oxygen

Rest potential, cyclic voltammetry and chronopotentiometry measurements were made to study the effects of cathodic polarization of chalcopyrite, simulating the mineral contacted with grinding media under a nitrogen atmosphere. The reaction products on the chalcopyrite surface were identified by XPS, and the mechanism of the cathodic reaction was proposed. Microflotation tests were performed to investigate the effects of surface changes on the floatability of chalcopyrite.