rotary drum dryer

Rotary drum dryer is called dryer for short; it is a kind of dryer for handling a mass of materials. Due to its running is reliable, its operating flexibility is big, its adaptability is strong and its handling capacity is large, so it is widely used in many industries like metallurgy, building materials, food, light industry, chemical industry, coal, medicine and mineral product. Generally speaking, rotary drum dryer is adapt to granular materials, it also can be used to dry stick and cream materials or the materials with high quantity water through the method of blending materials partly. It has many advantages, such as big output, wide range of application, little flow resistance, and wide allowable variation range of operation, convenient operation, etc. It is usually used for drying sand, mineral powder, coal slurry, chicken manure, cattle manure, etc.

Rotary Drum Dryer's Operational Principle is:

The heat source of dryer is from combustion devices. This dryer adopts direct flow heating method. So the material should be sent to the shell by the feed chamber and feed chute. After that the material will be pushed backward by the spiral shoveling plate. As the dryer is located with a tilt, the material flows to the end by the gravity and circumduction meanwhile it is shoveled repeatedly by the shoveling plate to the upper end then comes down constantly, forming an even curtain in the drum and exchanging heat fully with the hot current in the drum. With the material being raised and scattered again and again, the moisture is dried gradually. Finally it is dried totally.

rotary drum dryer 's main features is :

1. The dryer is of strong overload capacity resistance, large process load, low fuel consumption, and low cost.

2. It adopts direct flow drying method. The gas fume and the material go to the dryer from the same side. By using the hyperthermia gas fume, the evaporation strength is very high. With the low outlet temperature, the heat efficiency is very high.

3. The operating parameter can be changed according to different materials. So that the material can form a stable fabric curtain and achieve fully heat exchange.

4. The new type feeding and discharging device solve the problem of feeding jam, discontinuous and uneven feeding, and returning charge which lighten the load of dedusting system.

5. The new inner structure strengthens the cleaning and heat conduction of the dispersed material, and eliminates the bonding in the inner drum wall. The adaptability to the material moisture and stickiness is stronger.

6. The zero level thrust of the dryer reduces the abrasion to the catch wheel and the riding wheel. The operation of the rotary drum is stable and reliable.

7. The dryer adopts the riding wheel device, which make the riding wheel and the rolling ring linear touch all the time. Thus the abrasive and the power loss are greatly reduced.

8. The granularity and the moisture and be controlled by the customer’s demand. When drying the coal slurry, the product moisture can be less than 8% and the granularity and be less than 8mm.