... kinds,one is one drum rotary dryer,one is three drum rotary dryer.2, Drum Rotary slag DryerDrum Rotary slag dryer is widely used ... energy consumption and convenient for transportation.3,Working Theory of Rotary slag dryerRotary slag dryer consist of a horizontally inclined ... one end and discharged at the other end. In direct-type rotary dryers, hot gases move through the cylinder in direct contact ...