About a kinetics of dissolution of polydispersed
systems in the cascade of apparatus
Fedorov S.P., Sharikov Y.V., Lunev V.D.
The in-depth theoretical analysis of unsteady dissolution process of a polydispersed particles
ensemble in the cascade of apparatus with mixing devices is conducted that motive power of process (difference current
and equilibrium concentration of solution) differs from a stage to stage. The analytical solution of equations of a
mathematical model of this process for a case of constants in time (but different among themselves) values of motive
power in separate stages of the cascade presenting as practical, and theoretical concern is adduced. On the basis of
the solution of a problem a differential and integral cumulative distribution function of dissoluble particles on a
residence time in the cascade are constructed, the expression for a mean time of stay of such particles in first j
stages is adduced. Two particular examples of dissolution of polydispersed particles system, presenting definite
concern explicitly are considered, for one of them the condition of a steady run of activity of the cascade is
obtained. The conclusion about a reason of increase of a dispersion degree of grain-size particles composition is
made in process of their promoting on stages of the cascade.
The outcomes of this research supplement articles [, 6] within the framework of the general
concept of construction of mathematical models of phase transition processes in dispersed systems.
The brief presentation of the theory is adduced in \\ Инж. физ. журн. (Engineering and
physical journal), 1984, V. 46, № 3, P. 521.
The full text is deposited in ВИНИТИ, reg. № 5794-83 from 24.10.83.
