Patent ID: 6153081
Filing Date: 2000-11-28
Classification: C22B,C25C,Y02P

Abstract:
A method of selectively recovering antimony and bismuth from a copper electrolyte comprising the steps of:(1) reducing Fe.sup.3+ ions existing in the copper electrolyte to Fe.sup.2+ ions by bringing the copper electrolyte into contact with metallic copper;(2) adsorbing the antimony and bismuth in the electrolyte onto a chelating resin by bringing the reduced solution obtained in step (1) in contact with the chelating resin;(3) washing the chelating resin with water;(4) obtaining a bismuth eluate in a bismuth elution process by eluting the bismuth by bringing a bismuth eluant solution containing a mixture of sulfuric acid at 20 to 30 g/l and sodium chloride at 120 to 180 g/l into contact with the washed chelating resin at a temperature of 40 to 60.degree. C.;(5) obtaining an antimony eluate in an antimony elution process by eluting the antimony by bringing an antimony eluant solution containing a mixture of sulfuric acid at 100 to 250 g/l and sodium chloride at 120 to 180 g/l into contact with the chelating resin at a temperature between 40.degree. C. and 60.degree. C. after the bismuth has been eluted.