Zhengzhou Hengyang Industrial Co., Ltd
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Triple pass rotary dryers consist of three lighter-duty drums of differing diameters nested inside each other. The drum is not set on a slope, but rather relies on pneumatic conveying to carry material through the unit.
Material is fed into the innermost drum, and is pushed out the end of that drum where it falls into the middle drum. Similarly, the material works its way through this drum, out the end, and into the remaining, outermost drum shell, where it moves through and is discharged at the end.
Triple pass dryers are generally employed for high-moisture applications where longevity is less of a concern. As such, they are often used in drying sand, biomass, 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 | 5.5×2 |
| Ф2.2*5m | 2.2 | 5 | 18.99 | 4-10 | 700-750 | 12-20 | 5.5×2 |
| Ф2.5*6m | 2.5 | 6 | 29.43 | 4-10 | 700-750 | 18-28 | 7.5×2 |
| Ф2.8*6m | 2.8 | 6 | 36.92 | 4-10 | 700-750 | 25-35 | 11×2 |
| Ф3.0*6m | 3 | 6 | 42.39 | 4-10 | 700-750 | 30-40 | 7.5×4 |
| Ф3.0*7m | 3 | 7 | 49.45 | 4-10 | 700-750 | 30-45 | 7.5×4 |
| Ф3.2*7m | 3.2 | 7 | 56.27 | 4-10 | 700-750 | 35-55 | 11×4 |
| Ф3.6*8m | 3.6 | 8 | 81.39 | 4-10 | 700-750 | 55-75 | 18.5×4 |
| Ф4.0*10m | 4 | 10 | 125.60 | 4-10 | 700-750 | 70-100 | 22×4 |
The triple-pass rotary 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, silica sand, etc.