A single-drum dryer dries materials by using a rotating drum and lifting plates to facilitate heat exchange between the material and high-temperature flue gas. It features excellent drying effect, high capacity, high operating rate, energy saving and environmental protection, simple operation and maintenance, and long service life. The combination of circumferential lifting plates at multiple angles significantly improves the heat exchange rate and shortens drying time.

Working Principle: The main body of the rotary dryer is a rotating cylinder with a certain angle, equipped with a fuel chamber, exhaust system, dust collection system, and feeding device. High-temperature flue gas is used as the drying medium, entering the drying drum under the suction of the exhaust device. Wet material enters the dryer drum through the feeding device and comes into contact with the high-temperature flue gas. The high-temperature flue gas transfers heat to the wet material through convection, radiation, and conduction—this is the heat transfer process. After the material is heated, the moisture evaporates and enters the drying medium—this is the mass transfer process. During the heat and mass transfer process, the material continuously moves due to the constant rotation of the cylinder, flowing from the high end to the low end. Driven by the exhaust fan, the gas also flows from high pressure to low pressure. In this movement of gas and material, the material is dried and discharged outside the machine, while the exhaust gas is collected and released into the atmosphere.

Performance Characteristics

1. The exterior is treated with high-strength external insulation material, greatly reducing heat loss.

2. The inner cylinder is treated with high-temperature anti-corrosion coating, reducing corrosion within the machine.

3. An internal vortex device improves thermal efficiency and increases the residence time of the material within the machine.

4. The multi-combination lifting plate design creates a rain-like material curtain across the cross-section, increasing the material-air contact area and reducing wind tunnel phenomena within the machine.

5. The drying heat supply can utilize a hot air furnace, a fluidized bed furnace, a gasification furnace, a natural gas furnace, a biomass furnace, etc., designed according to local resources, effectively reducing production costs.

6. The entire system adopts microcomputer automatic control and digital display tracking.

7. Low cost and high output; total investment is 30% lower than ordinary rotary dryers and comparable to vertical dryers.

8. Multiple models are available to suit different drying materials and time requirements.

Applicable Materials: Clay, shale, lump ore, slag, mineral powder, fly ash, titanium dioxide, bauxite, sludge, ceramsite, gypsum, etc.