... device, supporting device and sealing ring, feeding device, discharging device, gears, gearbox, motor, dust collector, furnace and etc.Heat Resource:coal, coal gas, natural gas, LPG gas, wood, and ... for the slag in the cement factories and premixed dry mortar production line.The material ... granular size is around 20-40mm.Installation and practice:Compared with single cylinder dryer, reduce ...