Study on the Preparation of Nickel Cabonate Using Nickel Chloride Prepared from Nickel MHP

Generally NiSO 4 and NiCl 2 were used as raw materials for producing nickel carbonate. In the case of the produced nickel carbonate, Na 2 SO 4 and NaCl are generated on the surface and inside of the nickel carbonate to decrease the purity of the nickel carbonate. High purity nickel carbonate can be produced according to the degree of removal of such impurities. In this study, NiCl 2 produced by nickel MHP solvent extraction process was used to study the production of nickel carbonate. High purity nickel carbonate was prepared by the conditions according to the nickel salt and carbonate equivalence ratio, the reduction of Na and Cl in nickel carbonate according to the washing of nickel carbonate, and the reduction of Na and Cl according to the washing water temperature.