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2016 , Vol. 16 >Issue 1: 115 - 119

DOI: https://doi.org/10.12034/j.issn.1009-606X.215309

Study on Leaching Reaction Mechanism of Coal Gangue Based on Microwave-assisted Solid Phase Method and ChemOffice Software

  • LIU Cheng-long XIA Ju-pei LI Wan-lin ZHOU Xin-tao
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  • Faculty of Chemical Engineering, Kunming University of Science and Technology Faculty of Chemical Engineering, Kunming University of Science and Technology Faculty of Chemical Engineering, Kunming University of Science and Technology Faculty of Chemical Engineering, Kunming University of Science and Technology

Received date: 2015-08-21

  Revised date: 2015-11-24

  Online published: 2016-12-22

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Abstract

The extraction of valuable components such as iron and aluminum from coal gangue by microwave-assisted solid reaction method was studied. The chemical and phase compositions and micro-morphology of coal gangue and the leaching products were characterized by SEM, XRD and EDS. The results showed that the leaching rate of iron and aluminum reached 98.13% and 95.07%, respectively by microwave-assisted solid reaction method. Moreover, the valuable components of iron and aluminum in the acid leaching products existed in the forms of FeH(SO4)2×2H2O, FeSO3, Al2SO4(OH)4×5H2O and AlH(SO4)2×2H2O. The microwave-assisted solid acid leaching mechanism was investigated by simulating the three-dimensional structures and intermolecular bond lengths of components with ChemOffice software, which was different from traditional thermal leaching one.

Key words： microwave-assisted solid reaction method; coal gangue; acid leaching; reaction mechanism; iron; aluminum

Cite this article

LIU Cheng-long XIA Ju-pei LI Wan-lin ZHOU Xin-tao . Study on Leaching Reaction Mechanism of Coal Gangue Based on Microwave-assisted Solid Phase Method and ChemOffice Software[J]. The Chinese Journal of Process Engineering, 2016 , 16(1) : 115 -119 . DOI: 10.12034/j.issn.1009-606X.215309

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