For theDifference Between Triple Pass Rotary Dryer and Single Pass Rotary Dryer, here we make capacity 30t/h sand dryer as sample:

Single Pass Rotary Dryer:

Triple Pass Rotary Dryer:

The diameter of triple pass rotary dryer(Drum diameter is 3.0 meters) is bigger than the sigle pass rotary dryer(Drum diameter is 1.9 meters).

The length of triple pass rotary dryer(Drum Length is 6.0 meters) is much shorter than the sigle pass rotary dryer(Drum length is 11 meters).