Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1992, Vol. 3 ›› Issue (2): 121

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TRACKING PYRITIC SULFUR DURING THE MICROWAVE-- CHEMICAL DESULEFURIZATION OF COAL USING MOSSBAUER SPECTROSCOPY

Weng Sihao(翁斯灏)1, Wang Jie(王 杰)2   

  1. 1 East China Normal University, Shanghai 200062, China;
    2 East China University of Chemical Technology, Shanghai 200281, China
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Weng Sihao(翁斯灏), Wang Jie(王 杰). TRACKING PYRITIC SULFUR DURING THE MICROWAVE-- CHEMICAL DESULEFURIZATION OF COAL USING MOSSBAUER SPECTROSCOPY.Nuclear Science and Techniques, 1992, 3(2): 121

Abstract: The transformations of pyrite in coal during the microwave-chemical treatment for desulfurization of coal was studied with Mössbauer spectroscopy of 57Fe. The results for phase analyses show that the selective dielectric heating by microwave energy can give rise to the thermal decomposition of pyrite FeS; in coal to new phases, pyrrhotite Fe1-xS (0<x≤0.125) and troilite FeS which can be dissolved in dilute HC1 solution. Therefore the microwave irradiation combined with the acid washing treatment will be an effective method of desulfurization of coal.

Key words: Coal, Desulfurization, Microwave irradiation, Acid- washing, M?ssbauer spectroscopy