Patents by Inventor Morris J. V. Beattie

Morris J. V. Beattie has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Flotation separation of arsenopyrite from pyrite
    Patent number: 5171428
    Abstract: Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO.sub.3.sup.- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: December 15, 1992
    Inventors: Morris J. V. Beattie, Jean P. Duteroue
  • Process for recovering gold and silver from refractory ores
    Patent number: 4647307
    Abstract: A process for the hydrometallurgical recovery of precious metal from an ore or concentrate containing at least some arsenopyrite or pyrite.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: March 3, 1987
    Inventors: Rein Raudsepp, Ernest Peters, Morris J. V. Beattie
  • Hydrometallurgical copper process
    Patent number: 4632738
    Abstract: A novel hydrometallurgical process for the recovery of copper, and optionally iron, from sulfide copper concentrates containing common copper sulfides such as chalcopyrite, bornite and chalcocite using electrowinning cells wherein the anolyte and the catholyte are separated by a solution-impermeable cation exchange membrane.
    Type: Grant
    Filed: May 2, 1984
    Date of Patent: December 30, 1986
    Assignee: Great Central Mines Ltd.
    Inventors: Morris J. V. Beattie, William G. Bacon, Rein Raudsepp