Now showing items 1-3 of 3

    • Cleaning and dewatering fine coal 

      Mining and Minerals Engineering; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Eraydin, Mert K.; Freeland, Chad (United States Patent and Trademark Office, 2017-10-17)
      Fine coal is cleaned of its mineral matter impurities and dewatered by mixing the aqueous slurry containing both with a hydrophobic liquid, subjecting the mixture to a phase separation. The resulting hydrophobic liquid ...
    • 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 ...
    • Method of separating and de-watering fine particles 

      Mining and Minerals Engineering; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan (United States Patent and Trademark Office, 2016-12-13)
      A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; ...