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Electromagnetic and thermal modeling of microwave drying of fine coal

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Abstract

The principle of microwave drying of fine coal is based on the selective absorption of microwaves by water. Coal is a poor absorber of microwaves. As a result, water can be removed from fine coal by selectively heating water molecules. One of the difficult problems during microwave heating is the exact determination of temperature in the core of the materials. The electromagnetic energy absorption in coal/water mixtures during microwave drying is controlled by several factors including the dielectric properties of the constituents. In this paper, electromagnetic and thermal models of coal are presented that can predict the energy absorption and temperature distribution during microwave drying.

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Authors and Affiliations

  1. Dept. of Electrical Engineering, University of Nevada, Reno, NV, USA

    I. Chatterjee (assistant professor)

  2. Dept. of Chemical and Metallurgical Engineering, University of Nevada, Reno, NV, USA

    M. Misra (member SME, associate professor)

Authors
  1. I. Chatterjee
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  2. M. Misra
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Additional information

SME preprint 90-195, SME Annual Meeting, Feb. 26–March 1, 1990, Salt Lake City, UT. M&MP paper 90-633.

Discussion of this paper must be submitted, in duplicate, prior to Aug. 31, 1991.

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Chatterjee, I., Misra, M. Electromagnetic and thermal modeling of microwave drying of fine coal. Mining, Metallurgy & Exploration 8, 110–114 (1991). https://doi.org/10.1007/BF03402941

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  • DOI: https://doi.org/10.1007/BF03402941

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