... , front and rear wheel unit, inside and outside of feeding device, gearing, high pressure air machine, shaker ... iron device (to ensure no hard sawdust of drying ), buffer gas pipeline dryer, automatic control ... 2-5 t/hSaw dust rotary dryer1, Thermal efficiency as high as 85% ( monocular dryer ... only 35%) to improving the thermal efficiency of 50%.2,Compared to the monocular dryer,small ...