Patents Examined by Pritish Darji
  • Process for reduced alkali consumption in the recovery of silver
    Patent number: 8252254
    Abstract: The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by hot curing of the autoclave discharge slurry followed by decomposition of argentojarosite using strong acid consumers.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: August 28, 2012
    Assignee: Barrick Gold Corporation
    Inventors: Yeonuk Choi, Peter D. Kondos, Jacques McMullen