Rotary Drum Dryer

About Rotary Drum Dryer

Drying, roasting, heat treatment and cooing is achieved by passing the material being processed through a rotating horizontally inclined cylindrical drum. The stream of hot gas / air for drying and cold air for cooling, also, passes through the drum. As the drum rotates, the internals, Pusher Flights and Lifters, fitted into the drum tumble, slide, lift and shower and cascades the material into the air steam. In co- current dryers, the hot gas/air stream flows in the same direction as that of the product being dried, and in counter current model the drying gas / air stream travels against the flow of the product being dried. ln these dryers the product is directly exposed to i.e. in contact of the stream hot gas / air produced by the heat source.