Rotary Drum Dryer

The best drying equipment for granule, powder or small lump material.

Rotary Drum Dryer Overview

Rotary Drum Dryer is a continuously operated industrial drying equipment, which is mainly used for drying moist materials by hot air or hot airflow inside the drum. It is suitable for large-scale drying of granular, powdery or lumpy materials, and is widely used in mining, chemical, food, agriculture and other industries for its stable operation and high efficiency.

Rotary Drum Dryer for Sale

Product Details

Features and Advantages of Rotary Drum Dryer

Features and Advantages

Highly efficient drying

The rotary drum dryer greatly accelerates the drying speed, because when the drum rotates, the platen lifts up the material and lets it contact with the hot airflow in all directions.

Stable operation

Simple structural design, no complicated parts and cumbersome operating mechanism, high reliability of equipment operation. Low failure rate during long-term continuous production.

Highly adaptable

The advantage of this dryer is that it can cope with the physical and chemical characteristics of different materials, such as particle size, humidity, viscosity and other differences, to meet diversified industrial drying needs.

Low energy consumption

The high heat energy utilisation of the rotary dryer is a major highlight. During the drying process, especially when equipped with a heat recovery system, the heat can be fully utilised, thus reducing wastage.

Flexibility in size

Rotary dryers offer a high degree of flexibility in terms of size selection. Whether you are a small business with low production requirements or a large plant with mass production requirements, you will find the right capacity for your plant.

Product quality guarantee

During the drying process, the problem of localised overheating or under-drying can be effectively avoided as the material is uniformly heated in the drum. This ensures the stability of the drying quality.

Main Technical Parameters of Rotary Drum Dryer

Main Technical Parameters

Modle Motor(kw) Diameter(mm) Length(mm) Speed (r/min) Capacity(t/h)
HXRD-800 5.5 800 8000 6 1-2
HXRD1000 7.5 1000 10000 5 2-4
HXRD1200 7.5 1200 12000 4.5 4-6
HXRD1500 11 1500 15000 4.5 6-8
HXRD1600 15 1600 16000 4.5 7-9
HXRD1800 22 1800 18000 4.5 9-11
HXRD2000 37 2000 20000 4.3 11-13
HXRD-2200 37 2200 22000 4 13-15
HXRD2400 45 2400 24000 4 15-18

Structural Components of Rotary Drum Dryer

Structural Components

Drum

The main drying part, consisting of an inclined cylindrical drum. Inside the drum, there is a platen, which is used to turn and throw the material to increase the contact area.

Heating system

Provides the heat source, which can be a variety of fuels (coal, oil, gas or electricity), and the hot air is usually generated through a combustion chamber or a hot air furnace.

Feeding and discharging devices

Ensures a continuous supply and discharge of material and is usually equipped with a screw conveyor or other conveying equipment.

Exhaust gas treatment systems

These include cyclones, baghouses and other equipment for treating exhaust gases and capturing fine particles.

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Working Principle of Rotary Drum Dryer

Working Principle

When the rotary drum dryer is working, the wet material enters the slightly inclined rotating cylinder from the feed port, and the lifting plate in the cylinder lifts the material so that it can fully contact with the hot air introduced. The hot air can be directly heated by the combustion gas or indirectly heated by the outside. The material moves along the axial direction under the action of gravity and the rotation of the cylinder. After the water evaporates, the dry material is discharged from the discharge port, and the water vapor is discharged by the exhaust system.

Rotary Drum Dryer Application Scenarios

Application Scenarios

Agricultural sector

For feed, it can quickly remove moisture and inhibit the growth of microorganisms. For fertiliser, the dried fertiliser is less likely to clump, making it easier to store and transport.

Mining Industry

In the mining industry, rotary dryers are used to dry ores, remove water from ores, increase the efficiency of subsequent beneficiation and smelting, and facilitate storage and transport.

Building materials industry

Gypsum, cement, lime, etc. in the building materials industry need to strictly control the moisture in the production process, through the dryer can be accurately dried to ensure stable product performance.

Chemical Industry

Rotary drum dryers effectively dry a wide range of chemical materials to ensure the accuracy of chemical reactions and product quality. Granular chemicals and dyes can be dried to production standards.

Environmental protection industry

For biomass and waste, after drying, resources can be recycled, such as biomass power generation, waste fertiliser, etc., to reduce the pollution of the environment.

Other fields

Rotary drum dryers are also used in other fields. For example, drying some raw materials in food processing, drying some herbs or pharmaceutical intermediates in the pharmaceutical industry.

Rotary Drum Dryer Buying Guide

Buying Guide

Define drying requirements

Equipment models and configurations should be selected according to the characteristics of the materials to be dried, including humidity, particle size, density, thermal sensitivity, etc.

Choosing the right heat source

According to the energy cost, environmental requirements and material characteristics, choose the appropriate heat source, such as coal-fired, gas, fuel oil or electric heating.

Considerations for equipment materials

Drying corrosive materials need to choose corrosion-resistant materials, while ordinary materials can choose carbon steel. High temperature drying applications require the selection of high temperature resistant materials.

Thermal efficiency and energy consumpti

Priority is given to equipment with multi-stage heat exchange structures or heat recovery devices to enhance thermal efficiency, reduce energy consumption and lower operating costs.

Degree of automation

When choosing, pay attention to the automation control system of the equipment, such as the controllability of temperature, airflow, speed, etc. This helps to improve production efficiency and reduce labour costs.

Equipment size and site

Select the appropriate size of equipment to ensure that the equipment capacity matches the production line. At the same time, consider the footprint and installation space of the equipment.

Frequently Asked Questions.

The rotary drum dryer is suitable for granular, powdery or lumpy materials, such as ores, sand, grains, fertiliser, coal sludge, sludge and so on. By adjusting the equipment configuration, it can adapt to different humidity and drying requirements.

The drying efficiency of rotary drum dryer depends on the material characteristics, humidity, heat source type and equipment configuration. Usually it can reach 80%-90% heat utilisation rate, which is higher than traditional drying equipment.

The heat source requirement is calculated based on the initial moisture content of the material, the processing capacity and the target moisture content. Manufacturers can provide specific heat source configuration recommendations, choose coal, gas, oil or electric heating and other methods.

Yes, it can. Rotary drum dryers are particularly suitable for high moisture materials such as sludge or coal sludge. It is necessary to ensure that a suitable heat source and platen design are configured to improve drying efficiency.

No, it is not complicated. Modern rotary drum dryer is equipped with automatic control system, which can monitor the temperature, speed, humidity and other parameters in real time, and the operation is simple and convenient.

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