Fresh air is drawn in by means of a fan. The air is then passed through a filter and heated to produce warm air by use of electric heaters. If the product contains a solvent or inflammable substances, the dryer must be operated using steam and provided with a flame-proof motor. The heated air passes through the product container which has diffuser plates and a sieve. Due to the stream of air, the wet product gets fluidised. The material gets surrounded by the hot air and gets dried due to heat transfer. Moist air passes through a filter bag and an exhaust duct. The Fluid Bed Dryer is not suitable for drying of liquids or pastes.