Kinetics and mechanism of the chalcopyrite-pyrite concentrate oxidation process

Kinetics and mechanism of the chalcopyrite-pyrite concentrate oxidation process

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...

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Published in:Thermochimica acta Vol. 282; pp. 121 - 130
Main Authors: Z̆ivković, Z̆ivan D., Mitevska, Nataša, Savović, Veselin
Format: Journal Article
Language:English
Published: Elsevier B.V 01-07-1996
Subjects:
Activation energy
Chalcopyrite-pyrite concentrate
DTA-TG-DTG
Oxidation mechanism
Oxidative roasting
Sulphide concentrate
X-ray diffraction
Oxidation mechanism
Sulphide concentrate
X-ray diffraction
Chalcopyrite-pyrite concentrate
DTA-TG-DTG
Oxidative roasting
Activation energy
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Abstract 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 SO 2 -log p O 2 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.
AbstractList 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 SO 2 -log p O 2 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.
Author Mitevska, Nataša
Z̆ivković, Z̆ivan D.
Savović, Veselin
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  organization: Technical Faculty at Bor, 19210 Bor, Yugoslavia
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  fullname: Mitevska, Nataša
  organization: Copper Institute, 19210 Bor, Yugoslavia
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  givenname: Veselin
  surname: Savović
  fullname: Savović, Veselin
  organization: Copper Smelter and Refinery, 19210 Bor, Yugoslavia
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Cites_doi 10.1016/0040-6031(90)80022-Q
10.1016/0040-6031(76)85026-5
10.1016/0040-6031(80)80076-1
10.1007/BF01911411
10.1016/0040-6031(83)80125-7
10.1021/ac60131a045
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Keywords Oxidation mechanism
Sulphide concentrate
X-ray diffraction
Chalcopyrite-pyrite concentrate
DTA-TG-DTG
Oxidative roasting
Activation energy
Language English
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PublicationTitle Thermochimica acta
PublicationYear 1996
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References Kissinger (BIB8) 1957; 25
Z̆ivković, Savović (BIB2) 1994
Dimitrov, Hekimova, Asenov, Ruskov, Tomov (BIB3) 1980; 40
Vaughon, Craig (BIB7) 1978
Dimitrov, Boyanov (BIB4) 1983; 64
Z̆ivković, Milosavljević, S̆estak (BIB5) 1990; 157
Ozawa (BIB9) 1970; 2
Vanyukov, Zaitzev (BIB1) 1973
Karvan, Malinovski (BIB6) 1976; 17
Dimitrov (10.1016/0040-6031(96)02883-3_BIB3) 1980; 40
Z̆ivković (10.1016/0040-6031(96)02883-3_BIB2) 1994
Kissinger (10.1016/0040-6031(96)02883-3_BIB8) 1957; 25
Vaughon (10.1016/0040-6031(96)02883-3_BIB7) 1978
Ozawa (10.1016/0040-6031(96)02883-3_BIB9) 1970; 2
Z̆ivković (10.1016/0040-6031(96)02883-3_BIB5) 1990; 157
Vanyukov (10.1016/0040-6031(96)02883-3_BIB1) 1973
Dimitrov (10.1016/0040-6031(96)02883-3_BIB4) 1983; 64
Karvan (10.1016/0040-6031(96)02883-3_BIB6) 1976; 17
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Snippet The results of comparative DTA-TG-DTG analysis of the chalcopyrite-pyrite concentrate oxidative roasting process are presented in this paper. The chemistry of...
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SubjectTerms Activation energy
Chalcopyrite-pyrite concentrate
DTA-TG-DTG
Oxidation mechanism
Oxidative roasting
Sulphide concentrate
X-ray diffraction
Title Kinetics and mechanism of the chalcopyrite-pyrite concentrate oxidation process
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