The Aqueous Oxidation of Pyrite

CIM Bulletin, 1952


The aqueous oxidation of pyrite in caustic solutions under oxygen pressure was investigated by measuring that effect of reaction variable on oxygen consumption by the reactions. F rom the results of this investigation, a model for the process has been proposed. In this model, sulphur diffuses as a positive ion through an oxide layer which forms on the sulphide particles and is then oxidized to sulphate ion. Iron is oxidized by substitution al diffusion of oxygen atoms into the oxide layer. The effect of most reaction variables on the rate of oxygen consumption can be explained with this model.
Keywords: Concentration, Consumption, oxidation, oxidation, oxygen, pyrite, sulphur, University of British Columbia, Oxygen, particles, Pressure, pyrite, sulphur