Patents Assigned to Anglo Mineral Resources, Inc.
  • Extraction method for refractory precious metal ore
    Patent number: 4421724
    Abstract: Cyanic extraction of precious metal from comminuted, refractory precious metal ore as well as refractory precious metal concentrates and tailings from such ore is effected with rapidity and high yield by agitationally treating the refractory material with an aerated, alkaline solution containing a high concentration of water soluble cyanide and a low concentration of chemical oxidizer such as potassium permanganate.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: December 20, 1983
    Assignee: Anglo Mineral Resources, Inc.
    Inventor: Larry B. Hunnel