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Mssbauer Study of Coal Desulfurization by Microwave Irradiation Combined With Manetic-Separation and Chemical Acid-Leaching
被引：12
作者：
翁斯灏
王杰
机构：
[1] China Center of Advanced Science and Technology (World Laboratory), P O Box , Beijing
[2] Department of Physics, East China Normal University, Shanghai , PRC,Department of Chemical Engineering for Energy Resources, East China University of Chemical Technology, Shanghai , PRC
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摘要：
<正> 57Fe Mssbauer spectroscopy was used to study the mechanism and regularity of coal desulfurization by microwave irradiation combined with magnetic-separation and with chemical acid-leaching. The results of phase analyses show that the decomposing reaction of pyrite intrinsic in coal, caused by the selective dielectric heating of microwave electromagnetic energy, FeS2→Fe1-xS→FeS, consecutively progresses towards the right-hand side with increased irradiation time. The whole process of microwave desulfurization of raw coal consists of the initiation, the promotion, and the saturation stages. The optimum desulfurization efficiency for microwave irradiation combined with magnetic-separation treatment and with chemical acid-leaching treatment can be attained by appropriately controlling the irradiation time to enable the corresponding microwave treatment to lie in the promotion stage and the saturation stage, respectively.
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页码：1289 / 1299
页数：11
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