Patents Assigned to Rio Algom Limited
  • Sulfuric acid extraction of uranium from its ores
    Patent number: 4131639
    Abstract: A method of extracting uranium from its ores, by mixing ground ore with sulphuric acid to give a moist ore containing a sulphuric acid concentration of less than 4N, without forming a continuous liquid phase, and curing the moist ore at 50.degree. to 100.degree. C while passing an oxidizing gas through it.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: December 26, 1978
    Assignee: Rio Algom Limited
    Inventor: James T. Mather