Rheology in manufacturing ceramics and refractories. 7. Polydispersity and dilatancy of HCBS of a mixed composition

An example of highly concentrated ceramic suspensions of mullite and quartz sand characterized by a substantial dilatancy is used to show that the introduction of a highly disperse suspension of molten quartz into their composition makes it possible to diminish substantially or eliminate the effect of dilatant flow even at a volume fraction of the solid phase C-V = 0.71. The latter fact is connected with the growth of the parameter of polydispersity of solid-phase particles, which causes an increase in the volume of the kinetically free dispersion medium in the process of its deformation given that C-V of the dispersion system is comparable.