... rotary drum dryer for fertilizers 1.Suitable for drying sawdust, sand,slag,vinasse etc 2.High capacity 3.Easy operation Rotary drum dryer1. ... driving device, supporting device and seal ring.3. Main features:1. Reasonable design2. High-efficiency3. Low consumption, energy saving4. Easy to maintain5 ... type of heating with heat soure from firing unit. The material to be dried is pushed back immindiately by ...