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Rotary Dryer

Rotary dryer is a kind of continuous rotating drum drying equipment with direct heating source. It is used to dry limestone, sand, coal, slag, clay, wood chips,sawdust, mining powder etc.

  • Feed Size: <10mm
  • Motor Power: 3-110KW
  • Processing capacity: 1-75 t/h

Rotary dryer is a kind of continuous rotating drum drying equipment with direct heating source. It is used to dry limestone, sand, coal, slag, clay, wood chips,sawdust, mining powder etc.

  • Feed Size: <10mm
  • Motor Power: 3-110KW
  • Processing capacity: 1-75 t/h

What is rotary dryer?

Rotary dryer is mainly used for drying various mineral materials, and it is a special equipment for drying and dehydrating high-humidity materials. The heat source of the dryer comes from the combustion device, which can be used in the way of down-flow or counter flow heating. The rotary drum dryer is mainly used in building materials, metallurgy, chemical plant, cement plant for drying of limestone slag, coal powder, slag, clay stone and so on. This dryer is particularly suitable for drying big granules in chemical industry, minerals, metallurgy industry. It can also dry special powder and granule material, such as lightweight calcium carbonate, floridian, magnetic particle, graphite, limestone, sand, coal, slag, clay, wood chips, mining powder etc.
 

How to choose rotary dryer?

Rotary dryers are useful in a variety of industrial applications and choosing the right dryer can enhance the efficiency of your entire materials processing system.The following are the general principles for the selection of drying equipment:

Material properties. Different material characteristics will affect drying efficiency. To ensure that thermal processing meets production targets. When selecting a rotary dryer, consider key material characteristics such as: Water content of raw material, the water content of the air outlet meets the standard, the specific heat of the material being processed, heat transfer characteristics of the material being processed, material granule size, material surface quality (abrasive, corrosive, etc.).

Direct or Indirect Heat application. Direct heat rotary dryers pass a stream of drying air through the drum. The drying air is directed in either a co-current flow (flowing the same direction as the material), or counter-current flow (moving in the opposite direction of the material). Direct dryers are the most common choice for drying bulk solids. If material to be dried cannot come into contact with oxygen, or needs a completely inert environment, an indirectly heated rotary dryer is a choice.

Rotary dryer plant surroundings. Things such as the surrounding atmosphere, air temperature, humidity, and elevation, will affect the dryer’s performance. For example, an increase in elevation means a decrease in the amount of oxygen in the atmosphere, making the air less dense and less combustible. Therefore, the dryer’s fan size may need to be increased to compensate at higher elevations.

A large number of components can be customized to meet most processing requirements. Additional customizations such as percussion systems, sealing options and structural materials can be combined to create an efficient drying solution that suits your unique processing requirements.

Product features

Drying factors can be adjusted, such as concentration of feeding liquid/thickness of material film, temperature of heating medium, rotating speed of the drum etc, which can change drying efficiency.

  • High Quality

    High heat efficiency. Inner dryer wall plate is weld in spiral, which increase the drying efficiency and larger capacity.

  • Customized Design

    The pin-pin replaceable gear is used to replace the traditional cast steel gear. It greatly reduces the maintenance cost and time.

  • Good Performance

    It can be used to dry powder or granular materials. For those materials with adhesion, it can be equipped with striking device to avoid wall sticking.

Working principle

Rotary dryers consist of a horizontally inclined rotating cylinder. Material is fed at one end and discharged at the other end. In direct-type rotary dryers, hot gases move through the cylinder in direct contact with the material, either with or against the direction of its flow. The cylinder is equipped with flights, which lift the material and shower it down through the hot gas stream.

Specification

Spec.
(Dia.x Length mm)
Volume(m³) Capacity (t/h) Gradient(%) Highest Inlet Air
Temperature(℃)
Rotate Speed(r/min) Main Motor(kw)
Φ600×6000 1.7 0.5-1.5 3~5 700~800 3~8 3
Φ800×8000 4.1 0.8-2.0 3~5 700~800 3~8 4
Φ800×10000 5.1 0.8-2.5 3~5 700~800 3~8 4
Φ1000×10000 7.9 1.0-3.0 3~5 700~800 3~8 7.5
Φ1000×12000 9.4 1.2-3.2 3~5 700~800 3~8 11
Φ1200×8000 9 1.9-2.4 3~5 700~800 3~8 7.5
Φ1200×10000 11.3 2.2-3.0 3~5 700~800 3~8 7.5
Φ1200×12000 13.6 2.4-3.2 3~5 700~800 3~8 7.5
Φ1500×12000 21.2 4.5-5.7 3~5 700~800 2~6 15
Φ1500×14000 24.7 5.3-6.6 3~5 700~800 2~6 15
Φ1500×16000 26.5 5.7-7.1 3~5 700~800 2~6 15
Φ1800×12000 30.5 6.5-8.1 3~5 700~800 2~6 18.5
Φ1800×14000 35.6 7.6-9.5 3~5 700~800 2~6 18.5
Φ1800×16000 40.7 7.8-10.2 3~5 700~800 2~6 18.5
Φ2000×18000 56.5 8.4-12.3 3~5 700~800 1.5~6 22
Φ2000×20000 62.8 9.0-13.6 3~5 700~800 1.5~6 22
Φ2200×16000 60.8 11.4-15.8 3~5 700~800 1.5~6 22
Φ2200×18000 68.3 12.8-16.2 3~5 700~800 1.5~6 22
Φ2200×20000 75.9 13.0-16.5 3~5 700~800 1.5~6 30
Φ2400×16000 72.3 13.5-16.9 3~5 700~800 1.5~5 37
Φ2400×18000 81.4 17.4-21.7 3~5 700~800 1.5~5 45
Φ2400×20000 90.4 19.3-24.1 3~5 700~800 1.5~5 55
Φ2600×24000 127.4 27.2-34.0 3~5 700~800 1.5~5 75
Φ2600×28000 148.6 28.6-36.2 3~5 700~800 1.5~5 75
Φ3000×20000 141.3 30.1-37.7 3~5 700~800 1.5~5 85
Φ3000×25000 176.6 37.7-47.1 3~5 700~800 1.5~5 90
Φ3200×25000 201 42.9-53.6 3~5 700~800 1.5~5 110

*The output will vary according to different materials, feed particle size and other factors

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