Patents Assigned to Teck Resources Limited
  • Patent number: 9410225
    Abstract: A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subjecting the feed material to pressure oxidation in the presence of surfactant and a halogen to produce a product slurry. The process also includes subjecting the product slurry to liquid/solid separation to obtain a pressure oxidation filtrate and solids comprising at least one of a compound of arsenic and a compound of antimony, and recovering copper from the pressure oxidation filtrate.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 9, 2016
    Assignees: Teck Resources Limited, Aurubis AG
    Inventors: Henry Salomon-de-Friedberg, Hee Mun Jang
  • Publication number: 20150329937
    Abstract: A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subjecting the feed material to pressure oxidation in the presence of surfactant and a halogen to produce a product slurry. The process also includes subjecting the product slurry to liquid/solid separation to obtain a pressure oxidation filtrate and solids comprising at least one of a compound of arsenic and a compound of antimony, and recovering copper from the pressure oxidation filtrate.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 19, 2015
    Applicants: Teck Resources Limited, Aurubis AG
    Inventors: Henry Salomon-de-Friedberg, Hee Mun Jang
  • Publication number: 20110303051
    Abstract: A process for recovering copper from heap leach residues, the process comprising treating heap leach residues to provide treated heap leach residues providing improved permeability of a heap of the treated heap leach residues, and leaching the heap of the treated heap leach residues with a leaching solution. Treating the heap leach residues includes: a) blending the heap leach residues with additional material to provide a blend; or b) agglomerating the heap leach residues; or c) both blending the heap leach residues with additional material and agglomerating.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 15, 2011
    Applicant: Teck Resources Limited
    Inventors: Jose Alberto Gonzalez, Christian Ruben Jara Heck, Hector M. Lizama