Patents Assigned to ANGLO PLATINUM MANAGEMENT SERVICES (PROPRIETARY) LIMITED
  • UPGRADING OF PRECIOUS METALS CONCENTRATES AND RESIDUES
    Publication number: 20130177487
    Abstract: A process for upgrading a precious metals-containing concentrate or residue results in near-quantitave removal of base metals and several impurity elements at elevated temperatures. The precious metals-containing concentrate or residue is exposed to oxygen or an oxygen-containing environment in an oxidative pre-treatment step followed by treatment with a hydrochlorinating agent in a hydrochlorination step to form an upgraded concentrate or residue.
    Type: Application
    Filed: June 17, 2011
    Publication date: July 11, 2013
    Applicant: ANGLO PLATINUM MANAGEMENT SERVICES (PROPRIETARY) LIMITED
    Inventors: Alain Roy, Boyd R. Davis, Leslie James Bryson, Lloyd Robert Nelson, Stephen Farring Woollam, Victor Loyiso Vusumzi Mtotywa