... . easy operation,l Roller Drying machine, rotating drying machineRoller Drying machine Drum dryer, also known as rotary drum drier, is the material ... , grain, sand, clay and other materials. Roller Drum dryerThe main part of the drum dryer for a with the horizontal were slightly ... from the low end,counter-current contact with material,also material can flow into the drum pipe with heat-carrying ...