Patents Examined by Robert Halder
  • Upgrading of bauxites, bauxitic clays, and aluminum mineral bearing clays
    Patent number: 4303204
    Abstract: A process for the upgrading of aluminum mineral bearing raw materials by using at least three beneficiation treatment stages consisting of dispersion of a pulp of the material in specific pH ranges, screening in specific mesh sizes, and using at least one stage of high intensity magnetic separation.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: December 1, 1981
    Assignee: Reynolds Metals Company
    Inventor: David Weston