Showing papers by "Peter Baláž published in 1989"
TL;DR: In this paper, experimental results on the influence of preliminary mechanical activation on the thermal decomposition of chalcopyrite are presented and discussed, and the following experimental facts are found:==================¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯1. Increase in the temperature of the endothermic DTA peak of β-CuFeS2 from 821 K for a non-activated sample to 763 K for an optimally activated one.
Abstract: Experimental results on the influence of preliminary mechanical activation on the thermal decomposition of chalcopyrite are presented and discussed. The following experimental facts were found:
1.
a decrease in the temperature of the endothermic DTA peak ofβ-CuFeS2 from 821 K for a non-activated sample to 763 K for an optimally activated one;
2.
a decrease in the apparent activation energy of the thermal decomposition of CuFeS2 from 238 kJ mol−1 for a non-activated sample to 72 kJ mol−1 for an optimally activated sample.
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