The Dissolution Kinetics Of Chalcopyrite Concentrate In Aqueous Chlorination Solutions Of Chalcopyrite Concentrate

摘要: In this study, the dissolution kinetics of chalcopyrite concentrate was investigated by using the solutions obtained with dissolution of chalcopyrite concentrate in water saturated with chlorine. Reaction temperature, solid-to-liquid ratio, stirring speed,[Fe3+],[Cu2+] and [H+] were chosen as parameters. It was determined that the dissolution rate of chalcopyrite concentrate increased with increasing reaction temperature,[Fe3+] and [H+], and decreasing solid-to-liquid ratio, but was not affected importantly by [Cu2+] and stirring speed. A mathematical expression representing the process was established by using experimental data and a package program, as follows, 1-(1-X) 1/3={0.803.(S/L)-0.32.(SS) 0.17.[Fe3+] 0.38.[Cu2+] 0.19.[H+] 1.19. exp (-31.78/RT)}. t Also, it was found that the dissolution rate was controlled by chemical reaction step with an activation energy of 31.78 kJ. mol-1 in the reaction temperature range 50-88 0C.