FORMATION OF PELLET-LIKE FLOCS OF KAOLINITE BY POLYMER CHAINS

Insertion of a flocculant consisting of long molecules in a pulp of kaolinite of known thickness-diameter ratio and known specific surface results in increased flocculation and settling rate, but this is modified by the mechanical work given to the pulp. The relationship between the apparent viscosity, the settling phenomena of the suspension, its mechanical history, and the absorbed amount of flocculant was explored. It was found that large, compact kaolinite flocs, pellet-like in appearance, can be constructed from a suspension under special conditions. On the basis of the experimental results obtained, a direct pelletizing method from aqueous suspension might be developed. /A/