STUDIES ON TRANSPORT PROCESSES IN A SEGREGATING FLUIDIZED-BED

The behaviour of a strongly fluidising system composed of iron and gla ss particles with similar minimum fluidising velocities was studied, u nder steady and also under unsteady state conditions. The parameters w hich determine fluidisation behaviour were shown to be the depth of th e bottom layer and the fluidising velocity, and, based on these parame ters, a correlation was developed for predicting segregation. The down ward relative velocity of jetsam particles in the emulsion was measure d by two independent methods, and it was also demonstrated that under the conditions of this study only about 1% to 3% of the jetsam particl es reaching the layer interface is carried into the upper layer.