... shaker , stove, dust and sand removal device, iron device (to ensure no hard sawdust of drying ), buffer gas pipeline dryer ... moisture index. Reasonable structure, high output, low energy consumption,to be more easy automaticity and operated.So three roller drying ... 85% ( monocular dryer only 35%) to improving the thermal efficiency of 50%.2,Compared to the monocular dryer,small occupation reduced about ...