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Microwave Drying of Fine Coal
  • Published Date:
    1/1/1986
Filetype[PDF-5.71 MB]


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Microwave Drying of Fine Coal
Details:
  • Personal Authors:
    Lindroth, David P.
  • Description:
    The objective of this research by the Bureau of Mines was to determine the technical feasibility and associated pilot data for drying minus 1/4-in coal with microwave energy at a frequency of 2.45 GHz. The drying data were obtained experimentally on three coal types: bituminous, subbituminous, and lignite. The experiments were performed with a custom-designed conveyorized microwave oven having a continuous power capability of 12 kW. Drying efficiencies near the theoretical maximum of 1.54 kg of water per kilowatt hour of energy input were achieved for two coals and two sizes; overall drying efficiencies averaged 77 pct.

  • Collection(s):
    National Institute for Occupational Safety and Health
  • Supporting Files:
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