Now showing items 1-2 of 2

    • Apparatus for improved ash and sulfur rejection 

      Mining and Minerals Engineering; Virginia Tech Intellectual Properties, Inc.; Yoon, Roe-Hoan; Luttrell, Gerald H. (United States Patent and Trademark Office, 1996-06-04)
      An apparatus for separating impurities from coal, includes a device for removing a predetermined amount of ash-forming substances from the coal and a device for removing a predetermined amount of high specific gravity ...
    • 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; ...