... in EuropeOur new design three drum sand rotary dryer is developed on the common rotary drum dryer, which enhance the heating ... of the body, heating efficiency up to 80%(single drum dryer heating efficiency is only 35%), lower comsumption, capacity ... directradiatorHeating sourceCoal, oil, electricity, gas, biomass materialsRotation speed8-10 r/minRotation Power7.5 KW New Design 3 Drum Sand Rotary Dryer