METHOD OF SURFACE-TREATING PARTICULATE SOLIDS, MORE PARTICULARLY TITANIUM DIOXIDE PIGMENT PARTICLES.

摘要

The invention relates to a method of surface-treating inorganic particulate solids, more particularly titanium dioxide, in an aqueous suspension, the particles being surface-coated while the suspension is conveyed through a stirred mill. The method is preferably used in order to coat titanium dioxide particles with SiO2. The inventively treated particles have a very smooth, uniform and coherent shell and a significantly enhanced tinting strength.