Abstract <p>Scientific principles of hydrochemical dispersion of inorganic nonmetal powder materials are formulated. The effect of hydrochemical nanodispersion of quartz and chalk microparticles under the conditions of a wedging destructive action of surface-active substances and a “pseudocavitation” thermohydrodynamic action of a boiling suspension upon a fast-repeating interchange of thermal, chemical, and physical gradients generated in a coarsely dispersed system is found. A geometric model of the origination of this process is developed, and a generalized equation describing the effect of various processing parameters on the degree of hydrochemical dispersion of inorganic ceramic-forming particles is proposed. The following is determined on the basis of the investigation of the effect of hydrochemical treatment on the change in the sizes and volume fraction of dispersed quartz and chalk particles in an aqueous dispersion medium: (1) two opposite processes compete in the process of hydrochemical treatment, namely, nanodispersion and aggregation of nanoparticles, and (2) upon long-term execution of hydrochemical treatment, the aggregates obtained in an aqueous dispersion medium are broken down to nanoobjects, increasing the fraction of nanoparticles in the dispersed system.</p>