Patents Assigned to Goldcorp Inc.
  • Patent number: 11759767
    Abstract: An adsorbent composition comprising particles consisting of a core which is at least partially coated with an adsorbent material is disclosed. The core is selected so that it has at least one of: (i) wear resistance; (ii) resistance to corrosive conditions; (iii) at least one thermoplastic material; and (iv) a low porosity. A suitable core material is polystyrene. Adsorbent materials suitable for the coating include activated carbon and metal oxides such as silica and alumina. The adsorbent composition may be used for the adsorption of metals and metal ions in ore processing, for instance for the separation of precious metals such as gold.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: September 19, 2023
    Assignee: Goldcorp Inc.
    Inventors: Nuri Belgasem Ali Hmidi, Eduard Guerra
  • Patent number: 11517913
    Abstract: Methods and systems for preparing ore for precious metal extraction is provided. For example, a method comprises crushing ore; grinding the crushed ore; screening the ground ore to separate ore particles into a first group of large ore particles and a first group of small ore particles; crushing the first group of large ore particles; screening the crushed ore to separate into a second group of large ore particles and a second group of small ore particles; separating the second group of small ore particles from the screen into a third group of large particles and a third group of small particles; milling the third group of large ore particles; separating milled particles into a fourth group of large particles and a fourth group of small particles; and sending the third and fourth group of small particles for further metal extraction processing.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: December 6, 2022
    Assignee: GOLDCORP INC.
    Inventors: Peter Lind, Simon Hille, Marcus Tomlinson
  • Patent number: 11124857
    Abstract: A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As3+ to As5+ and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: September 21, 2021
    Assignee: GOLDCORP INC.
    Inventors: Marcus Tomlinson, Teodoro Martinez, Simon Hille
  • Publication number: 20200376497
    Abstract: Methods and systems for preparing ore for precious metal extraction is provided. For example, a method comprises crushing ore; grinding the crushed ore; screening the ground ore to separate ore particles into a first group of large ore particles and a first group of small ore particles; crushing the first group of large ore particles; screening the crushed ore to separate into a second group of large ore particles and a second group of small ore particles; separating the second group of small ore particles from the screen into a third group of large particles and a third group of small particles; milling the third group of large ore particles; separating milled particles into a fourth group of large particles and a fourth group of small particles; and sending the third and fourth group of small particles for further metal extraction processing.
    Type: Application
    Filed: December 3, 2018
    Publication date: December 3, 2020
    Applicant: GOLDCORP INC.
    Inventors: Peter LIND, Simon HILLE, Marcus TOMLINSON
  • Patent number: 10370739
    Abstract: A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As3+ to As5+ and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 6, 2019
    Assignee: GOLDCORP, INC.
    Inventors: Marcus Tomlinson, Teodoro Martinez, Simon Hille
  • Publication number: 20190143303
    Abstract: An adsorbent composition comprising particles consisting of a core which is at least partially coated with an adsorbent material is disclosed. The core is selected so that it has at least one of: (i) wear resistance; (ii) resistance to corrosive conditions; (iii) at least one thermoplastic material; and (iv) a low porosity. A suitable core material is polystyrene. Adsorbent materials suitable for the coating include activated carbon and metal oxides such as silica and alumina. The adsorbent composition may be used for the adsorption of metals and metal ions in ore processing, for instance for the separation of precious metals such as gold.
    Type: Application
    Filed: May 5, 2017
    Publication date: May 16, 2019
    Applicant: Goldcorp Inc.
    Inventors: Nuri Belgasem Ail HMIDI, Eduard Guerra
  • Patent number: 9885095
    Abstract: A process is provided for separation of at least one metal sulfide from a mixed sulfide concentrate. The process includes: subjecting the mixed sulfide concentrate to flotation in which at least one sulfide including antimony, arsenic and a first metal is floated and at least one sulfide including a second metal is depressed. The flotation yields a first metal concentrate having the at least one sulfide including antimony, arsenic and the first metal and a second metal concentrate having the at least one sulfide including the second metal. The first metal concentrate is leached to yield a further concentrate and a leach solution. The further concentrate includes the first metal and the leach solution includes soluble antimony and soluble arsenic. The process further includes oxidizing the leach solution to yield an antimony precipitate and an arsenic solution, and forming a stable arsenic compound from the arsenic solution.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: February 6, 2018
    Assignee: GOLDCORP INC.
    Inventors: Marcus Tomlinson, Teodoro Martinez, Simon Hille
  • Publication number: 20110192548
    Abstract: A tire cage is disclosed for containing the debris from a tire explosion. The cage includes a lightweight energy absorbing material for protecting structural members of the cage from tire explosion damage so that the cage is reusable. The energy absorbing material may be a metallic foam or other open celled structured material that is able to absorb large amounts of kinetic energy by permanently deforming. The cage is particularly effective in containing explosions of large equipment tires 6 to 12 feet in diameter and having a stored kinetic energy in a range of approximately 900 kilojoules to 1500 kilojoules.
    Type: Application
    Filed: April 15, 2011
    Publication date: August 11, 2011
    Applicant: Goldcorp Inc.
    Inventors: Dennis J. Dupray, Donald Kent Wilson
  • Patent number: 6132696
    Abstract: A method for the manufacture of precipitated calcium carbonate from impure calcium oxide of improved color is disclosed. The method comprises admixing impure calcium oxide with an aqueous solution consisting essentially of a salt of at least one compound selected from the group consisting of organic amines of the formula RNH.sub.2 and alkanolamines of the formula NH.sub.2 (R.sup.1 OH), where R and R.sup.1 are alkyl groups of 1-4 carbon atoms, and hydrochloric or nitric acid. The solution obtained is treated with a reducing agent e.g. sodium hydrosulphite, separated from insoluble matter and then treated with carbon dioxide or the carbonate of the amine or alkanolamine at a temperature of at least 50.degree. C. Preferably, the amine of the salt and of the carbonate are the same, and the salt is used in at least the stoichiometric amount to dissolve the lime.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: October 17, 2000
    Assignee: Goldcorp Inc.
    Inventors: Alvin Lee Porter, William Joseph Wilson
  • Patent number: 5939036
    Abstract: A method for the manufacture of precipitated calcium carbonate from impure calcium oxide of improved colour is disclosed. The method comprises admixing impure calcium oxide with an aqueous solution consisting essentially of a salt of at least one compound selected from the group consisting of organic amines of the formula RNH.sub.2 and alkanolamines of the formula NH.sub.2 (R.sup.1 OH), where R and R.sup.1 are alkyl groups of 1-4 carbon atoms, and hydrochloric or nitric acid. The solution obtained is separated from insoluble matter and then treated with carbon dioxide or the carbonate of the amine or alkanolamine. Preferably, the amine of the salt and of the carbonate are the same, and the salt is used in at least the stoichiometric amount to dissolve the lime.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: August 17, 1999
    Assignee: Goldcorp Inc.
    Inventors: Alvin Lee Porter, William Joseph Wilson