Kinetics and mechanism of the chalcopyrite-pyrite concentrate oxidation process

被引：0
|
作者：
Zivkovic, ZD
Mitevska, N
Savovic, V
机构：
[1] COPPER INST, YU-19210 BOR, YUGOSLAVIA
[2] COPPER SMELTER & REFINERY, YU-19210 BOR, YUGOSLAVIA
来源：
THERMOCHIMICA ACTA | 1996年 / 283卷
关键词：
activation energy; chalcopyrite-pyrite concentrate; DTA-TG-DTG; oxidation mechanism; oxidative roasting; sulphide concentrate; X-ray diffraction;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The results of comparative DTA-TG-DTG analysis of the chalcopyrite-pyrite concentrate oxidative roasting process are presented in this paper. The chemistry of the process characteristic of the system investigated is defined on the basis of comparative analysis of chemical potential change in the log p(so2)-log p(o2) diagram, X-ray analysis of oxidation products at 723, 873 and 1273 K and DTA-TG-DTG results. The activation energy values for the investigated processes are determined on the basis of DTA-TG-DTG results obtained for different heating rates by the methods of Kissinger and Ozawa.
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页码：121 / 130
页数：10
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