抄録
In order to clarify the effects of particle size and density on the segregation of the particles, some experiments on the permeation of the particles having different size and density from those of the bed were carried out in a moving bed by using glass beads and spherical particles of alumina with various sizes and densities.
The results indicate that a simple flowing pattern of the particles exists in the moving bed and the degree of permeation can be represented by the following empirical equation.
xT/xB=0.8(ρT/ρB)+1.2(DB/DT)n-1
where n=1 at DT≤DB or n=2atDT>DB and xT/xB is the quantity defined as an index of the permeation degree of the particles in a moving bed, which is independent of the moving distance of the bed. It is suggested that the segregation characteristic of the solid mixtures of particles having two different sizes and densities in a horizontal rotating conical vessel is closely related to the value of xT/xB obtained in the moving bed.
