The drying machine is mainly used for the drying of the particulate materials with certain humidity and granularity. The rotary dryer machine has the wide application range in the building materials, metallurgy, chemical and cement industries to dry the slag, limestone, coal powder, slag, clay and other materials as well as other small particles that can stand the high temperature and soot-stained materials. The rotary dryer machine is mainly comprised of rotary body, lifting blade, transmission device, supporting device and seals and other components.  

1. Compact structure, reasonable layout and simple structure.

2. Reliable operation, low energy consumption, high thermal efficiency of rotary dryer machine.

3. Easy to automatic control, reduce operating personnel,save the labor resources.

4. Small foundamental investment reduces the one-off investment.

The materials enter the inner layer of the drum dryer machine from the feeding device to realize the cocurrent drying material; the materials are lifted repeatedly in the inner layer by the lifting blade and scatter in spiral type to conduct heat exchange in the rotary dryer machine and the materials move to the other end to enter the middle layer, achieving countercurrent drying. The materials in the middle layer of the drum dryer machine are constantly lifted, which not only makes the materials in the middle layer fully absorb the heat of the inner drum, but also absorb the heat of the middle roller and prolong the drying time of rotary dryer machine, helping the materials to achieve the optimal dry state. After moving to the other end of the middle layer of the drum dryer machine the materials fall to the outside layer. In the outer layer, the materials move in the way of rectangular multi-loop to make the materials that have reached the drying effect be discharged out of the rotary dryer machine in the role of the hot air, while those wet materials that do not reach the drying effect can not move quickly because of the weight, but be dried in the rectangle lifting blade, thus completing the purpose of drying.

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