BOEHMITE PRECIPITATION FROM SOIDUM ALUMINATE SOLUTION AT ELEVATED TEMPERATURE

摘要

Substantially pure boehmite is produced by heating an aqueous sodium aluminate solution to a temperature of about 115 DEG -145 DEG C., preferably about 120 DEG -130 DEG C., treating the heated solution with alumina seed material and separating a boehmite precipitate from the solution. A particularly preferred seed material is boehmite gel.