However, participation of H2O2 and •OH, if any, in oxidation of the
sulfide ore pulp components and hence in deteriorating of the concentrate
grade and recovery of metal-sulfides has not yet been explored. In
an attempt to fill this gap,we have estimated the concentration of H2O2
in pulp liquid at different times of grinding and different grinding environments.
Thus the effect of pH, type of grinding (wet or dry grinding),
and different pyrite, chalcopyrite and galena fractions in mixtures with sphalerite on formation of hydrogen peroxide was investigated. In this
paper, the results of these investigations were presented and discussed
various pathways for the generation of H2O2.