Kinetic study and mechanism of chalcocite and covellite oxidation process

Summary

Results of the experimental investigation of the copper natural sulfide minerals (chalcocite and covellite) oxidation process in the air atmosphere are presented in this paper. Based on data obtained using thermal analysis methods and by construction of PSD diagrams for the Cu-S-O system at different temperatures, mechanisms of the investigated processes were determined. DTA-TG-DTG and RDA methods were used for the investigations given in this paper. Kinetic parameters as well as activation energies of investigated processes were determined using Sharp's method of reduced halftime of reaction.