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    • Method for dewatering fine coal 

      Mining and Minerals Engineering; Center for Innovative Technology; Virginia Polytechnic Institute and State University; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Luttrell, Gerald H. (United States Patent and Trademark Office, 1995-10-17)
      Fine coals are dewatered in an energy efficient process in which a non-polar liquid or a mixture of different hydrophobic liquids are used to displace the water from the coal surface. This process works with higher rank ...