TABLE OF CONTENTS The current theoretical considerations regarding the fundamentals of the process are based on the accepted classic representations, created by Rittinger, Richards and Finkel. These representations are based on the following assumptions:
The velocity of the flow is assumed to be uniform in the cross section of the apparatus.
The mass nature of the process is restricted only by empirical consideration of constricted conditions in the determination of the finite velocities of deposition of particles of fixed narrow size classes. In this case, the hovering velocity is assumed to be equal to the consolidated velocity of settling. This should reflect in an implicit manner the effects of the mechanical interaction of the particles with each other and with the walls of the apparatus, and also the effect of the solid phase on the carrying capacity of the flow as a whole. Otherwise, the mechanism of the process of classification is examined on the basis of the behaviour of a separate isolated particle.
It is assumed that the distribution of the solid phase in the cross section of the apparatus is uniform.
The determination of the relationship between the hovering velocity and the settling velocity of the same particles in a moving medium indicates that it is necessary to take into account the structure of the flow when developing a model of cascade separation. Our investigations of mass phenomena in the separation processes have contributed this factor to the account when developing the process theory. However, at...
