Drying of Welding Powder: In the fluidized bed, the entire solid material is rendered into a quasi-fluid state by the air currents. The solid material flows in a counter current to the upward current of air. The overflow weir is height-adjustable and, by the influencing of the height of the fluidized bed, enables adjustment of the solid material residence time. Due to constant flowing of air around every solid particle, sensitive wet granulate or powders can be dried very gently in fluidized beds.
