COLLOID CHEMICAL CONTROL OF KAOLINITE PROPERTIES RELATED TO CERAMIC PROCESSING

Abstract

Experimental data on structure formation in highly concentrated aqueous dispersions of kao- linite were analyzed using rheological models. The physicochemical properties of the clay mineral surface were studied during heating at a range of temperatures, and correlation of acid-base properties with physicomechanical characteristics of the spatial structures formed during heating was obtained. It was shown that interparticle interactions and plastic yield mechanisms under load are dependent upon inter- facial phenomena. A method for estimating optimal structural parameters was developed for semidry dispersions, enabling regulation of physicochemical and mechanical properties of ceramic mixtures during processing.