Foamability of Silica Suspensions in a Rotor-Stator Mixer

Abstract

A procedure is described for making aqueous silica suspensions with a desired particle size distribution. The influence of silica particles in different concentrations on foamability in a rotor-stator mixer for different rotational speeds has been studied by means of mixing characteristics. It appears that for low liquid flow rates, the solid particles have no influence on foamability. For high liquid flow rates, foamability decreases for increasing silica content; this effect becomes smaller for high rotational speeds. Rotational speed and silica content appear to have a combined effect on the process of foam formation.

Foaming of Silica Suspensions

“…Silica particles were in the range of 1-S f.lm. The preparation of the suspensions has been described earlier [2,3]. See also Reference [2] for a more detailed description of the equipment used.…”