The invention discloses a preparation method of high-purity superfine spherical
cobalt carbonate, and belongs to the field of preparation of
metal powder materials. The preparation method is as follows:
metal cobalt is used as a
raw material to prepare a
cobalt salt solution, a complexing agent is used for prepare a complexed
cobalt salt solution from the
cobalt salt solution, a mixture of an
ammonium salt and
urea is prepared in to a precipitant solution, a dispersant is added into the precipitant solution, the complexed
cobalt salt solution and the precipitant are added agent according to a certain volume ratio by a parallel flow feeding method into a reactor for reaction, the
reaction temperature is controlled at 50-80 DEG C, the pH value is controlled to 7.8-8.3, and the stirring speed is 60-200rpm, and finally the superfine spherical cobalt
carbonate is obtained by washing, filtering and
drying of prepared cobalt
carbonate. The preparation method has the advantages of simple production process, easy control, short
production cycle, high efficiency and
continuous production, a prepared cobalt carbonate product has the advantages of good mobility, uniform
particle size distribution, spherical microtopography, high
chemical purity and good chemical properties.