A FOURIER-TRANSFORM INFRARED STUDY OF THE OXIDATION OF PYRITE

被引：33

作者：

DUNN, JG ^{[1
]}

GONG, WQ ^{[1
]}

SHI, DG ^{[1
]}

机构：

[1] CSIRO,DIV MINERAL PROD,BENTLEY LAB,PERTH,WA,AUSTRALIA

来源：

THERMOCHIMICA ACTA | 1992年 / 208卷

关键词：

D O I：

10.1016/0040-6031(92)80173-T

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The oxidation of pyrite in an air atmosphere has been studied using Fourier transform infrared (FTIR) spectroscopy to identify phases present in the temperature range 430-680-degrees-C. Evidence of the formation of sulfate was obtained; the species was identified mainly as anhydrous iron(II) sulfate by comparison with the spectra of various iron sulfates and data from the literature. Iron(III) sulfate also formed as a minor phase. The FTIR analysis was supported by chemical analysis, both methods giving a maximum of iron(II) sulfate formed between 500 and 550-degrees-C. The FTIR method could be used to follow quantitatively the disappearance of pyrite as the oxidation progressed.

引用

页码：293 / 303

页数：11

共 12 条

[1]

BANERJEE AC, 1980, THERM ANAL, V2, P241

[2] THE EFFECT OF EXPERIMENTAL-VARIABLES ON THE MECHANISM OF THE OXIDATION OF PYRITE .1. OXIDATION OF PARTICLES LESS THAN 45-MU-M IN SIZE [J].

DUNN, JG ;

DE, GC ;

OCONNOR, BH .

THERMOCHIMICA ACTA, 1989, 145 :115-130

[3]

Gadsden, 1975, INFRARED SPECTRA MIN

[4] FORBIDDEN TRANSITIONS IN INFRA-RED SPECTRA OF TETRAHEDRAL ANIONS .3. SPECTRA-STRUCTURE CORRELATIONS IN PERCHLORATES SULPHATES AND PHOSPHATES OF FORMULAR MXO4 [J].

HEZEL, A ;

ROSS, SD .

SPECTROCHIMICA ACTA, 1966, 22 (11) :1949-+

[5] OXIDATION OF IRON (II) SULFIDE [J].

KENNEDY, T ;

STURMAN, BT .

JOURNAL OF THERMAL ANALYSIS, 1975, 8 (02) :329-337

[6]

LUGANOV VA, 1982, CAN METALL QUART, V21, P157

[7]

PAHLMAN JE, 1986, 9059 US BUR MIN REP

[8]

PANNETIE.G, 1965, B SOC CHIM FR, P609

[9] KINETICS AND MECHANISM OF THE DECOMPOSITION OF PYRITE UNDER CONVENTIONAL AND QUASI-ISOTHERMAL QUASI-ISOBARIC THERMOANALYTICAL CONDITIONS [J].

PAULIK, F ;

PAULIK, J ;

ARNOLD, M .

JOURNAL OF THERMAL ANALYSIS, 1982, 25 (02) :313-325

[10]

Ross S.D., 1972, INORGANIC INFRARED R

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