INFLUENCE OF FLOW PARAMETERS ON THE EFFECTS OF PARTICLES SEPARATION IN FAST SHEAR FLOW

The influence of the shear rate and the distribution of voids in a fast gravitational flow of granular materials on the efficiency of separation by size and density was studied by the method of mathematical modeling. It has been established that for intensive separation of large particles using the segregation effect, it is advisable to maintain high shear rates (75…85s^-1) in the layer volume.

The influence of the shape of the distribution of the volume fraction of voids in a fast gravitational flow on the intensity of quasi-diffusion separation has been studied. It has been established that the formation of a parabolic convex porosity profile in the gravitational flow at its maximum value in the central part of the flow contributes to an increase in the intensity of separation of an admixture of small particles and particles of various densities.