NICKEL AND COBALT RECOVERY PROCESS FROM AN ELUTE USING SOLVENT EXTRACTION

摘要

nickel and cobalt recovery process from an eluate employing solvent extraction and nickel or cobalt containing product obtained by such process. The present invention relates to a process comprising the following steps: (a) beneficiation or preparation of nickel and / or cobalt-containing ore, in addition to other base metals; (b) ore leaching: may occur in various forms and combinations; (c) pulp resin: the product obtained from the leaching is subjected to resin treatment following a countercurrent flow, eliminating the solid-liquid separation step; (d) solvent extraction: the eluate obtained after resin elution is subjected to operation in one or more solvent extraction stages for nickel and cobalt separation and one or more stages for purification of nickel-containing raffinate, if necessary; (e) Nickel electrolysis: The raffinate obtained in step (d) or the effluent solution of the previous nickel-containing stage feeds the electrolysis step to obtain the final product as nickel cathode; and (f) cobalt along with some impurities are contained in the solvent re-extraction solution, which should feed a cobalt recovery precipitation unit.