PROCESS FOR RECOVERING OF NI-CD AND GRAPHITE FROM ACCUMULATOR WASTAGE IN FORM NI- AND CD-SALTS OF HIGH PURITY AND IN FORM GRAPHITE BASIC-MATERIAL SUITABLE FOR ACCUMULATOR PRODUCTION

摘要

Cd ions are sepd. from Ni ions by selective solvent extraction using an organic phosphorus derivative. Cd remains in the organic phase and Ni and other impurities remain in the aq. phase, from which Ni is further removed by another solvent extraction with hydroxy-oxime. Both Cd and Ni are recovered separately from their organic soln. by H2SO4, cadmium hydroxide and nickel hydroxide are then pptd. from the sulphate solns