rotary dryer machine 1.sawdust Drying machine 2.Material can be powder, straw husk ,shavings,chips Rotary Drum Drying Machine Introduction:It also named rotary drum drier, ... coal, limestone, grain, sand, clay and other materials. Rotary drum dryer working principleRotary dryer is a revolving round drum with a small slope ... the material by the belt conveyor or screw conveyor. wood rotary dryer machine