Particles were dried in a vibro-fluidized bed and the drying characteristics in a constant drying rate period are discussed. Ion exchange resin particles were used for sample because they were fluidized smoothly even at a somewhat high moisture content.
The effects of vibration on the uniformity of moisture content in the bed were remarkable when air velocities become lower than the minimum fluidization velocity u_mf. The bed could be dried uniformly and it had no moisture content distributions under the appropriate vibrational conditions, even when air velocities were lower than u_mf.
The uniformity of moisture content in the bed depended upon air velocity, vibrational intensity, and height of bed.