Patents Assigned to International PGM Technologies
  • Recycling of solids in oxidative pressure leaching of metals using halide ions
    Patent number: 9039806
    Abstract: The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more passes through the high temperature leaching step.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: May 26, 2015
    Assignee: International PGM Technologies
    Inventors: David B. Dreisinger, Chris A. Fleming
  • RECYCLING OF SOLIDS IN OXIDATIVE PRESSURE LEACHING OF METALS USING HALIDE IONS
    Publication number: 20100206135
    Abstract: The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more passes through the high temperature leaching step.
    Type: Application
    Filed: May 11, 2007
    Publication date: August 19, 2010
    Applicant: International PGM Technologies
    Inventors: David Dreisinger, Chris Fleming
  • RECYCLING OF SOLIDS IN OXIDATIVE PRESSURE LEACHING OF METALS USING HALIDE IONS
    Publication number: 20100018351
    Abstract: The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more passes through the high temperature leaching step.
    Type: Application
    Filed: May 11, 2007
    Publication date: January 28, 2010
    Applicant: International PGM Technologies
    Inventors: Cashman R.S. Mason, Juris R. Harlamovs, David B. Dreisinger, Baruch Grinbaum