Reciprocating Patents (Class 209/277)
  • Patent number: 6820747
    Abstract: In a coal preparation plant which receives a raw coal feed and separates the raw coal feed into clean coal feed and refuse feed slurries using a media based separation process, an apparatus is provided for use therein. The inventive apparatus simultaneously processes the raw coal feed and clean coal feed and refuse feed slurries, while occupying minimal floor space within the coal preparation plant. The inventive apparatus includes a unitary vibrating screen assembly having a length and a width, wherein the width of the vibrating screen assembly is partitioned into three screen sections extending the length of the vibrating screen assembly. A deslime screen section receives the raw coal feed and separates the raw coal feed into coarse and fine sized fractions as the raw coal feed moves along the length of the deslime screen section. A refuse screen section receives the refuse feed slurry and removes separation media therefrom as the refuse feed slurry moves along the length of the refuse screen section.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: November 23, 2004
    Assignee: Sedgman, LLC
    Inventors: Larry A. Watters, Daniel S. Placha