Patents Assigned to Joseph L. Young
  • Microbiological oxidation process for recovering mineral values
    Patent number: 5006320
    Abstract: A process for the biological oxidation of sulfide in sulfide-containing ore. Preferably, the ore is then subjected to cyanide leaching. The resulting leach tail solution can be subjected to cyanide precipitation, employing ferric sulfate which is generated during the biological oxidation step of the process. Furthermore, a process for efficiently aerating the ore slurry during the biological oxidation step is provided.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: April 9, 1991
    Assignees: William W. Reid, Joseph L. Young, U.S. Gold Corporation
    Inventors: William W. Reid, Joseph L. Young