The rotary dryer is made up of stove, screw conveyor or belt conveyor, cyclone separator, draught fan, blower, air-lock vavle and matched piples. Rotary dryer working principle: The lifting plates which are arranged reasonably with changeable angles in order, throws moisture materials into the rotary cylinder. Then water will be separated from the materials by hot air-flow and changed into vapour to be discharged into the atmosphere. Then the materials would be dryed.

