The three pass rotary dryer is used to dry ore slag, flyash, quartz sand, etc, the size should be below 20mm. Three pass rotary dryer features: The rotary dryer shell is self-insulation, thermal efficiency up to 80%(single drum dryer is only 35), the production increase 100%. The whole shell length is shorter than the single drum 60%, it is good for the technology layout, reduce the factory area, and reduce the foundation investment. It is high efficiency, outside of the cylinder is 60 degree, the discharging temperature is lower than 60 degree. The outlet temperature is low, ehich can increase the dust collector equipment llife.
