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      The rotary drum dryer working principle

      News time:2018-05-23

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      Rotary Drum Dryer Working Principle
      Rotary drum dryer is managing by bringing it into direct contact having a heated gas. The dryer is produced up of a big, rotating cylindrical tube. The dryer slopes somewhat so that the discharge end is lower as opposed to materials feed end to be able to convey the information by way of the dryer below.
      The wet materials are transported into the material hopper by the belt conveyor and bucket elevator, and gets into the feeding terminal through feed pipe with feeder of material hopper. The pitch of the feeding pipe should be more than the natural pitch of materials in order to help the materials flow into the drying machine successfully. The cylinder of drying machine is a rotary cylinder which is oblique slightly.

      The materials are fed from the relatively higher terminal, heat carrier comes in from the lower terminal, and sometimes the heat carrier and materials get into the cylinder together fluid bed dryer. Along with the revolving of cylinder, the materials move to the lower terminal due to the gravity. When the wet materials move forward, it receives the heat from the heat carrier directly or indirectly. As a result, the wet materials are dried, and discharged out by belt conveyor or screw conveyor on the outlet. There is a shoveling plate inside the cylinder in order to shovel materials up and cast it out, to increase the connection surface, to promote drying efficiency, and accelerate the forward movement of materials.
      Generally, the heat carrier can be hot air and chimney flue. After the heat carrier is dried, the materials mingled with air should be collected with cyclone dust collector. If there is need to reduce the content of dust mixed with tail gas, the heat carrier should be subject to bag dust collector or wet dust collector before it is discharged.

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