Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 34: Issue 4
Influence of mechanical activation on decomposition of a chalcopyrite-pyrite mixture in an oxidizing atmosphere
Authors:
K. TkáčováMining Institute Slovak Academy of Sciences Solovjevova 45 043 53 Košice Č.S.S.R.

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P. BalážMining Institute Slovak Academy of Sciences Solovjevova 45 043 53 Košice Č.S.S.R.

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T. A. Korneva

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Pages:
1031–1041
Online Publication Date:
25 Jul 2005
Publication Date:
01 Jul 1988
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01913508
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The influence of the addition of pyrite and mechanical activation on an oxidative decomposition of chalcopyrite was studied. The course of the thermoanalytical curves and X-ray identification of the products showed that addition of pyrite affects mainly the endothermic processes taking place in region of low temperatures but does not significantly influence the temperature of CuSO4 formation and its content in the products of decomposition. Changes in fine and superfine structure of chalcopyrite brought about by mechanical activation at grinding cause the complex of exothermic oxidative reactions to proceed at temperatures as much as 180 deg lower than for a non activated sample. The endothermic effect of these oxidation reactions become more marked and the proportion of CuSO4 in the products of the oxidative decomposition increases significantly.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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