Patents Represented by Attorney High W. Glenn

Find this attorney in the Justia Lawyer Directory

  • Selective flotation of inorganic sulfides from coal
    Patent number: 4867868
    Abstract: Pyritic sulfur is removed from coal or other carbonaceous material through the use of humic acid as a coal flotation depressant. Following the removal of coarse pyrite, the carbonaceous material is blended with humic acid, a pyrite flotation collector and a frothing agent within a flotation cell to selectively float pyritic sulfur leaving clean coal as an underflow.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: September 19, 1989
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Kenneth J. Miller, Wu-Wey Wen