... one drum rotary drye.Three Drum Dryer Application: Mainly used in drying Slag, Sand, Coal, Iron Powder, Ore, Quartz ... same work principle, the material go into outside drum, in the drying working process, the material make three times ... of dust collector is long.4. The material of this dryer is alloy steel, more wear-resistant and longer ... -956-846 Rotary dryer for silica sand used in construction field