Patent ID: 6197273
Filing Date: 2001-03-06
Classification: B01J,B22F,C01B,C01G,C01P

Abstract:
A process for production of fine spherical particles of a carbonate or a hydroxide of nickel, cobalt or copper which comprises: dissolving a carbonate or a hydroxide of nickel, cobalt or copper having the general formula (I)M(CO.sub.3).sub.x/2.(OH).sub.ywherein M represents Ni, Co or Cu, and x and y are numerals satisfying the followings: 0.ltoreq.x.ltoreq.2, 0.ltoreq.y.ltoreq.2 and x+y=2, in aqueous ammonia, converting the resulting solution to a W/O emulsion containing droplets of the solution in a non-aqueous medium, and then removing volatile components including ammonia from within the droplets, thereby precipitating a basic carbonate or a hydroxide of nickel, cobalt or copper in the droplets.