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This paper presents the results of experimental investigations of chalcocite (Cu 2 S) oxidation process in an air atmosphere. X‐ray and chemical analysis were used for phase composition determination of the starting sample. The kinetics of the process was defined by the formula derived regarding simultaneous heat and mass transfer to a reacting front in a spherical particle, where oxidation takes place. The following kinetic model including the effect of the above chosen parameter was established: image The activation molar energy of the oxidation process was found to be 129 kJ/mol for the temperature interval 400–525°C.
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Mihajlović et al. (2004) studied this question.
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