Patents Assigned to Egberg Patents (Pty.) Limited
  • Classification of particulate material
    Patent number: 4311585
    Abstract: In this invention a method and apparatus for treating particulate material are provided. The apparatus includes a rotatable cylindrical vessel with a concentrate outlet near its operatively lowest part and a particulate feed inlet and a tailings outlet above the concentrate outlet. Means are included in the apparatus for preventing particles packing together at the cylindrical wall during rotation of the vessel.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: January 19, 1982
    Assignee: Egberg Patents (Pty.) Limited
    Inventor: Otto T. Bergstrom