The Measurement of the Size Distribution of Irregular Particles by Liguid-solid Fluidization in a High Reynolds Number

Abstract

A method for measuring the particle size distribution of irregularly shaped and large particles in a Reynolds number which varied from 122 to 633 has been developed from the relationship between the pressure drop, ΔP_i, across a fixed and a fluidized bed and the superficial velocity, u_i. It is recognized by experiments that the equivalent diameter in the fixed and the fluidized bed corresponds to the volume-surface mean diameter, i. e. the specific surface.
The particle size distributions calculated by a computer analysis of the ΔP_i and u_i were in good agreement with the particle size distributions obtained by the weighed measurement of glass beads, crushed glass and crushed rocks.