The influence of inert particles on crystal sized distribution (CSD) in gas-liquid-solid three-phase fluidized crystallization process is studied with potassium chloride solution in a conical fluidized bed. The results show that nature of inert particles

volume concentration

size and shape affect crystal size distribution effectively

with the increase density

size and concentration of inert particles

CSD becomes worse. CSD also becomes worse with the increase of gas flow rate

however

when gas flow rate further increases

CSD will become better and then worse again. Increasing density

size

concentration of inert particles will make the effects of enhancing gas flow rate on CSD less effective

meanwhile the gas flow rate corresponding with the turning point of CSD from worse to better will increase. To inhibit the adverse effects of inert particles on CSD

light

small and low concentration particles should be used.