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IJCT Vol.15(2) [March 2008] >


Title: Dissolution kinetics of calcined chalcopyrite ore in sulphuric acid solution
Authors: Gülfen, Mustafa
Aydin, Ali Osman
Keywords: Chalcopyrite
Calcination
Thermal analysis
XRD analysis
Sulphation
Dissolution kinetics
Issue Date: Mar-2008
Publisher: CSIR
Abstract: The dissolution kinetics of the primary calcined chalcopyrite ore from Damar mine area in Artvin city, Turkey was investigated in sulphuric acid solution. The ore was calcined for 1, 2 and 3 h at 373, 473, 573, ....1273 K temperatures. Then the calcined samples were dissolved in sulphuric acid solution. The calcination temperature and time, sulphuric acid concentration, solid/liquid ratio, agitation rate, particle size, dissolution temperature and time were determined. In addition the sulphation of the sulphide ore between 573-1073 K temperatures was examined. Finally, the activation energy in the dissolution was calculated as 4.04 kJ/mole for the calcined chalcopyrite ore. It was found that the dissolution process was controlled by limit film diffusion.
Page(s): 180-185
ISSN: 0971–457X
Source:IJCT Vol.15(2) [March 2008]

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