Three cylinder drying machine

Three cylinder drying machine

[ Capacity ]: 8-100t/h

[ Applicable Material ]:

Three cylinder drying machine is also called Triple-pass Rotary Drum Dryer. It is a kind of drying equipment to dry material with humidity or granularity in the industries of mineral dressing, building material.


The three cylinder dryer is mainly used for granularity material which is in the range of a certain humidity,such as yellow sand which used in dry mortar industry,all kinds of casting sand in casting industry,slag in building materials industry;also can dryingsmall granularity clay,coal,coal ash,iron powder,ore,silica sand and so on.

Working principle:

Materials enter the inner side of the drum through the feeding device to realize current flow drying process,then the materials enter the middle layer of the inner wall through the other end to realize counter current drying process.They are lifted in over and over in the middle layer which advance in two-steps forward and one-step back way.The three-drum dryers absorb heat from both inner drum and middle drum,which extend the drying time and realize the best drying condition.Finally,materials fall into the external layer of the drum from the other end of the middle layer, processing in a rectangle multi-loop way.The dried materials move quickly out of the drum under the hot air,while the wet ones remain because of their own weight.Materials are dried completely inside the rectangle shoveling plate and then cooled by the single drum cooler, thus finishing the whole drying process.



1.Compact structure,small floor area,the length cut down 60% than single cylinder rotary dryer,be helpful to plant layout

2. Self insulation efficiency of cylinder is as high as above 80%, which greatly improves thermal efficiency to 45%. (thermal efficiency of traditional monocular dryer is just 35%)

3. Fuel of three-drum rotary dryer can be coal,oil,gas,etc.It can dry block,granular and powder materials.

4.Discharge temperature <60 ℃,it could storage directly in the silo, no need cooling section.

5. It's without rack wheel transmission,but uses riding wheel drive, which is of smooth operation,high running rate,less maintenance,low cost,etc.


Model Diameter of outer cylinder(m) Length of outer cylinder (m) Drum volume(m³) Rotation speed(r/min) Max. air flow temperature(℃) Production capacity(t/h) Power(kw)
Ф2.0*4m 2 4 12.56 4-10 700-750 8-15 5.5x2
Ф2.2*5m 2.2 5 18.99 4-10 700-750 12-20 5.5x2
Ф2.5*6m 2.5 6 29.43 4-10 700-750 18-28 7.5x2
Ф2.8*6m 2.8 6 36.92 4-10 700-750 25-35 11x2
Ф3.0*6m 3 6 42.39 4-10 700-750 30-40 7.5x4
Ф3.0*7m 3 7 49.45 4-10 700-750 30-45 7.5x4
Ф3.2*7m 3.2 7 56.27 4-10 700-750 35-55 11x4
Ф3.6*8m 3.6 8 81.39 4-10 700-750 55-75 18.5x4
Ф4.0*10m 4 10 125.60 4-10 700-750 70-100 22x4

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