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

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

Yartası, Ahmet
Temur, Hakan
Kocakerim, M. Muhtar

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.

Conference or Workshop Item
PeerReviewed

2009-06

513