Abstract
Thermogravimetry has been employed to follow the progress of the oxidation reaction of cylindrical pellets of chalcopyrite concentrate blended with lime. Metallographic examination of pellet sections established the shrinking core pattern under the various experimental conditions. The rate of oxidation was investigated over the temperature range 753 to 873 K. To enable comparison with earlier work, subsequent leaching of calcines from the 773 K runs was also examined. Factors resulting in low copper recoveries have been examined thermodynamically and confirmed by X-ray diffraction analyses.
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Ahmadzai, H., Blairs, S., Harris, B. et al. Oxidation aspects of the lime-concentrate-pellet roasting process. Metall Trans B 14, 589–604 (1983). https://doi.org/10.1007/BF02653945
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DOI: https://doi.org/10.1007/BF02653945