Patents Assigned to MM Metals USA, LLC
  • System and method of producing low carbon ferrochrome and low carbon ferrochrome produced thereby
    Patent number: 10683564
    Abstract: A system and method for recovering a high yield of low carbon ferrochrome from chromite and low carbon ferrochrome produced therefrom. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 16, 2020
    Assignee: MM Metals USA, LLC
    Inventors: Daniel Shaw, James Saville, John Williams, Trevor N. Mustoe
  • Method for producing low carbon ferrochrome from chromite ore and low carbon ferrochrome produced thereby
    Patent number: 10648057
    Abstract: A method and system for recovering a high yield of low carbon ferrochrome from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 12, 2020
    Assignee: MM Metals USA, LLC
    Inventors: Daniel Shaw, James Saville, John Williams, Trevor N. Mustoe
  • Method and system for producing low carbon ferrochrome from chromite ore and low carbon ferrochrome produced thereby
    Patent number: 10508319
    Abstract: A method and system for recovering a high yield of low carbon ferrochrome from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: December 17, 2019
    Assignee: MM Metals USA, LLC
    Inventors: Daniel Shaw, James Saville, John Williams, Trevor N. Mustoe