By optimizing the process system parameters and selecting reasonable operating parameters, the single-drum dryer has greatly improved thermal efficiency and reduced energy consumption. Its coal consumption and electricity consumption are 30-70% lower than those of general dryers, and the hourly output is increased by 50-85%.
Single Cylinder Dryer, also known as rotary drum dryer or single-drum horizontal dryer, is a high-efficiency horizontal drying equipment. Its main body is a long horizontal rotary drum, which rotates horizontally on four supporting wheels at both ends through the belts at both ends. The single-drum dryer is mainly composed of a drum, a front roller ring, a rear roller ring, gears, a retaining roller, a drag roller, a pinion, a discharging part, a lifting plate, a reducer, a motor, a hot air duct, a feeding chute, a furnace body and other parts. Its working principle is to put the material into the drying drum and use the hot air flow generated by the hot air furnace to heat and dry the material to dehydrate and dehumidify it.
As a high-efficiency, energy-saving and highly adaptable drying equipment, the single-drum dryer has been widely used in many industries such as building materials, coal, chemicals, and mineral processing. Its unique structure and functional design enable the material to fully contact the hot air flow during the drying process, achieving rapid and uniform drying, greatly improving the drying efficiency and reducing energy consumption. At the same time, the single-drum dryer also has the advantages of simple operation, easy maintenance, and small footprint, which meets the needs of different industries for drying equipment.
The movement of the material is due to the combined effect of inclination of the shell to the horizontal and the internal tumbling action or mechanical turn over thus the name tumbling dryer.
The cylinder body of the dryer is made of steel material, which has the characteristics of high hardness and high toughness; and compared with other materials, its wear resistance is higher.
Due to the high air velocity, the material is well dispersed in the gas phase, and the entire surface of the material can be used as the effective drying area, so the limited drying area is greatly increased.
The dryer system has good sealing performance and is equipped with a complete dust removal device so that the dust is small and the operating environment is good.
The new internal structure strengthens the cleaning and heat conduction of the dispersed materials.
1. Heat conduction: The single-drum dryer is usually equipped with a heat source system, such as a hot air furnace or a burner, to generate high-temperature hot air flow. The hot air flow enters the drum through the hot air duct of the dryer and comes into direct contact with the wet material. The moisture in the wet material evaporates rapidly at high temperature and is carried away by the hot air flow, thereby achieving the drying of the material.
2. Material tumbling: The drum of the single-drum dryer rotates under the drive of the motor. There is a lifting plate or other stirring device inside the drum. When the drum rotates, these devices will continuously turn up and scatter the material, so that the material is continuously tumbled and mixed in the drum. This tumbling and mixing helps the material to fully contact with the hot air flow and improve the drying efficiency. At the same time, tumbling can also prevent the material from forming accumulation and agglomeration in the drum, ensuring that the material is evenly heated.
3. Material conveying: During the rotation of the drum, the material will be affected by a certain gravity and the inclination angle of the drum, and thus move along the drum to the discharge end. This continuous material conveying process ensures the residence time of the material in the drum, so that the material is fully dried.
| Spec. (Dia.x Length mm） |
Volume（m³） | Capacity (t/h) | Gradient（%） | Highest Inlet Air Temperature（℃） |
Rotate Speed(r/min) | Main Motor(kw) |
| Φ600x6000 | 1.7 | 0.5-1.5 | 3～5 | 700～800 | 3～8 | 3 |
| Φ800x8000 | 4.1 | 0.8-2.0 | 3～5 | 700～800 | 3～8 | 4 |
| Φ800x10000 | 5.1 | 0.8-2.5 | 3～5 | 700～800 | 3～8 | 4 |
| Φ1000x10000 | 7.9 | 1.0-3.0 | 3～5 | 700～800 | 3～8 | 7.5 |
| Φ1000x12000 | 9.4 | 1.2-3.2 | 3～5 | 700～800 | 3～8 | 11 |
| Φ1200x8000 | 9 | 1.9-2.4 | 3～5 | 700～800 | 3～8 | 7.5 |
| Φ1200x10000 | 11.3 | 2.2-3.0 | 3～5 | 700～800 | 3～8 | 7.5 |
| Φ1200x12000 | 13.6 | 2.4-3.2 | 3～5 | 700～800 | 3～8 | 7.5 |
| Φ1500x12000 | 21.2 | 4.5-5.7 | 3～5 | 700～800 | 2～6 | 15 |
| Φ1500x14000 | 24.7 | 5.3-6.6 | 3～5 | 700～800 | 2～6 | 15 |
| Φ1500x16000 | 26.5 | 5.7-7.1 | 3～5 | 700～800 | 2～6 | 15 |
| Φ1800x12000 | 30.5 | 6.5-8.1 | 3～5 | 700～800 | 2～6 | 18.5 |
| Φ1800x14000 | 35.6 | 7.6-9.5 | 3～5 | 700～800 | 2～6 | 18.5 |
| Φ1800x16000 | 40.7 | 7.8-10.2 | 3～5 | 700～800 | 2～6 | 18.5 |
| Φ2000x18000 | 56.5 | 8.4-12.3 | 3～5 | 700～800 | 1.5～6 | 22 |
| Φ2000x20000 | 62.8 | 9.0-13.6 | 3～5 | 700～800 | 1.5～6 | 22 |
| Φ2200x16000 | 60.8 | 11.4-15.8 | 3～5 | 700～800 | 1.5～6 | 22 |
| Φ2200x18000 | 68.3 | 12.8-16.2 | 3～5 | 700～800 | 1.5～6 | 22 |
| Φ2200x20000 | 75.9 | 13.0-16.5 | 3～5 | 700～800 | 1.5～6 | 30 |
| Φ2400x16000 | 72.3 | 13.5-16.9 | 3～5 | 700～800 | 1.5～5 | 37 |
| Φ2400x18000 | 81.4 | 17.4-21.7 | 3～5 | 700～800 | 1.5～5 | 45 |
| Φ2400x20000 | 90.4 | 19.3-24.1 | 3～5 | 700～800 | 1.5～5 | 55 |
| Φ2600x24000 | 127.4 | 27.2-34.0 | 3～5 | 700～800 | 1.5～5 | 75 |
| Φ2600x28000 | 148.6 | 28.6-36.2 | 3～5 | 700～800 | 1.5～5 | 75 |
| Φ3000x20000 | 141.3 | 30.1-37.7 | 3～5 | 700～800 | 1.5～5 | 85 |
| Φ3000x25000 | 176.6 | 37.7-47.1 | 3～5 | 700～800 | 1.5～5 | 90 |
| Φ3200x25000 | 201 | 42.9-53.6 | 3～5 | 700～800 | 1.5～5 | 110 |
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