Patents by Inventor Benjamin D. Cooley

Benjamin D. Cooley 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).

  • Sulfate precipitation during oxidative ammonium leach of Cu, Ni, Zn sulfide ores
    Patent number: 4153522
    Abstract: In the recovery of copper, nickel or zinc from sulfide ores by leaching with ammonium sulfate solution containing free ammonia in the presence of oxygen to form a leach solution containing dissolved copper, nickel or zinc ammonia sulfate complex, an alkaline metal hydroxide (preferably calcium hydroxide) is introduced into the leaching operation to precipitate the sulfate ion formed and to release ammonia combined therewith as ammonium ion.
    Type: Grant
    Filed: May 31, 1978
    Date of Patent: May 8, 1979
    Assignee: The Anaconda Company
    Inventors: Nathaniel Arbiter, Benjamin D. Cooley