ALUMINUM HYDROXIDE AGGREGATED PARTICLES, PROCESS FOR PRODUCING THE SAME, VESSEL USED THEREFOR, AND PROCESS FOR PRODUCING ALUMINUM HYDROXIDE POWDER

摘要

An average particle diameter of more than 40 ㎛, and then 1,000 kg / cm ² pressure measured average particle size of less than 35 ㎛, than the L value of slurry obtained by mixing with glycerol 20 ㎖ and the aluminum hydroxide aggregated particles 10 g 69 the aluminum hydroxide aggregated particles are obtained by a method comprising the following steps: ; (A) feeding a supersaturated aqueous sodium aluminate solution to a vessel, ; (B) adding aluminum hydroxide seeds to the supersaturated aqueous sodium aluminate solution, ; Step (c) stirring the seed was added to the solution in the vessel continues to supply additional supersaturated aqueous sodium aluminate solution in the vessel to hydrolyze the supersaturated aqueous sodium aluminate solution, ; (D) separating the aluminum hydroxide aggregate particles from the aqueous sodium aluminate solution, and ; (E) the step of continuing to emit out of the vessel the aqueous sodium aluminate solution.