Fluid Bed Dryers are offered in static as well as Vibratory Design and are used for amorphous/ crystalline products with relatively close particle size distribution.
Vibratory fluid bed dryers are used for amorphous/ crystalline powders which are difficult to fluidise. Air fluidisation is supplemented by mechanical vibrations to achieve uniform bed distribution on the perforated plate.
The dryer offers better control on fluidisation, residence time, product moisture and dust levels.
Static fluid bed dryers are used for crystalline powders which are easy to fluidise. Air fluidisation is possible due to fairly uniform particle size distribution.