Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process

The paper presents the results of experimental investigation of the chalcopyrite-pyrite concentrate oxidation in the air. Characterisation of the initial sample and oxidation products was done by ICP-AES, XRD, EDXRF methods. Phase stability diagrams were constructed for Cu-Fe-S-O system at 25, 450,...

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Bibliographic Details
Published in:	Metalurgija Vol. 54; no. 2; p. 311
Main Authors:	Mitovski, A, Štrbac, N, Manasijević, D, Sokić, M, Daković, A, Živković, D, Balanović, Lj
Format:	Paper
Language:	English
Published:	Hrvatsko Metalursko Društvo (HMD) 01-04-2015
Subjects:	copper concentrate oxidation thermal analysis
Online Access:	Get full text
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Summary:	The paper presents the results of experimental investigation of the chalcopyrite-pyrite concentrate oxidation in the air. Characterisation of the initial sample and oxidation products was done by ICP-AES, XRD, EDXRF methods. Phase stability diagrams were constructed for Cu-Fe-S-O system at 25, 450, 650 and 900 °C. Equilibrium composition of the charge for the optimal oxidation process was calculated. DTA-TG analysis was used for monitoring the oxidation process. Kinetic parameters in non-isothermal conditions were determined, based on Kissinger and Ozawa methods.Values of activation energies showed that all stages of the oxidation process occur in the kinetic field.
Bibliography:	128949
ISSN:	0543-5846 1334-2576