Matters needing attention in the operation of rotary drum dryer equipment in organic fertilizer production line

FAQ News 5100
Rotary drum dryer equipment

Use and structural features of the dryer: tumble dryer, also called tumble dryer. It is widely used in building materials, metallurgy, chemical industry, cement industry to dry slag, clay and other materials. The dryer is mainly composed of rotary body, lifting plate, rotating device, supporting device and sealing ring and other components. It has the characteristics of reasonable structure, excellent production, high product quality, low energy consumption and convenient operation.

The rotary cylinder dryer is mainly composed of the front and rear supporting wheel devices of the cylinder device, the feeding and discharging device, the transmission device and the gear cover and other components. (Auxiliary equipment matched with the dryer: combustion chamber, feeding and discharging equipment, dust collection equipment, etc. are not within the scope of this machine). It is mainly used in mineral processing, building materials, metallurgy, chemical industry and other departments to dry materials with a certain humidity or particle size. The rotary dryer has strong adaptability to materials, can dry various materials, and the operation of the equipment is simple and reliable, so it is widely used.

tumble dryer

Modern Equipment

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Working principle of rotary drum dryer


The heat source of the rotary drum dryer comes from the combustion device, and the equipment adopts the downstream heating method. Therefore, the materials that need to be dried slip into the cylinder from the feed box and feed, and are pushed backward by the spiral lifting board. Due to the inclined placement of the dryer, on the one hand, the material flows to the back end under the action of gravity and rotation; The curtain fully exchanges heat with the hot air in the cylinder. As the material is repeatedly scattered, the moisture contained in it is gradually dried, so as to achieve the purpose of drying.
[Scope of application]: Rotary cylinder dryer is mainly used for drying materials with a certain humidity or particle size in mineral processing, building materials, metallurgy, chemical industry and other departments. It is also suitable for drying in the production of phosphate fertilizer, compound fertilizer and organic fertilizer.

【Equipment advantages】:

  1. High degree of mechanization, large production capacity, continuous operation.
  2. The structure is excellent and simple, the material runs smoothly through the resistance of the cylinder, and the operation is convenient.
  3. Few failures, low maintenance costs, and low power consumption.
  4. Wide application range and good drying uniformity.

Precautions for use of rotary drum dryer

  1. The moisture content of the dried material is greater than the specified value. The way to eliminate it is to control the production capacity of the dryer and increase or reduce the heat supply.
  2. The rolling ring oscillates against the operation of the cylinder. The reason is that the side of the concave joint of the rolling ring is not clamped. The elimination method is to use a backing plate to keep the rolling ring and the concave joint even and properly clamped to prevent over-tightening and easy have an accident.
  3. Reasons for the destruction of the meshing gap between the large gear and the pinion: a. wear of the tug wheel b. wear of the retaining wheel c. wear of the pinion.
  4. The reason for the vibration of the whole body: a. The connection between the tugboat device and the base is damaged. The elimination method is to correct the fastening connection part to make it in the correct position; b. The side of the rolling ring is worn. Turn or replace.

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