Cold purifcation flter cakes generated in the hydrometallurgical processing of Angouran mine zinc concentrate commonly contain signifcant amounts of Zn,Cd,and Ni ions and thus are valuable resources for metal recovery.In this research,a nickel containing solution that was obtained from sulfuric acid leaching of the flter cake following cadmium and zinc removal was subjected to solvent extraction experiments using 10vol%LIX984N diluted in kerosene.Under optimum experimental conditions(pH 5.3,volume ratio of organic/aqueous(O:A)=2:1,and contact time=5 min),more than97.1%of nickel was extracted.Nickel was stripped from the loaded organic by contacting with a 200 g/L sulfuric acid solution,from which 77.7%of nickel was recovered in a single contact at the optimum conditions(pH 1-1.5,O:A=5:1,and contact time=15 min).
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