PROCESS FOR SEPARATING AMORPHOUS PRECIPITATED SILICA AND AMORPHOUS PRECIPITATED SILICA OBTAINED BY THIS PROCESS

摘要

Amorphous precipitated silica obtained from an aqueous solution of an alkali silicate by a process in several stages, this silica preferably having a specific surface area of about 150 m ** 2 / g, an average particle size of 6 to 15 microns , and a mass volume of at least 3.5 cm ** 3 / g.