... roller drier,rotary drying machine Roller Drum drying machine 1.High efficiency 2.good performance. 3. easy operation,l Roller Drying machine, rotating drying machine, , Introduction:Roller Drying machine ... , grain, sand, clay and other materials. Roller Drum dryerThe main part of the drum dryer ... the feeding end by hopper of feeding machine through charging pipe .Feeding pipeline slopping angle ...