Patent ID: 9051625
Filing Date: 2015-06-09
Classification: C22B,Y02P

Abstract:
1. A method, comprising: (a) contacting a precious metal-containing solution with a barren resin to form a precious metal-loaded resin and a precious metal barren solution; (b) contacting the precious metal-loaded resin with a precious metal eluant comprising a trithionate to form a precious metal-rich eluant and a barren resin comprising trithionate; (c) contacting the barren resin with at least one of a sulfide, bisulfide and polysulfide to convert at least a portion of the trithionate into thiosulfate; and (d) contacting the thiosulfate with an oxidant to convert at least a portion of the thiosulfate into a trithionate for recycle to step (b) as an eluant component.