Rotary drum dryer is a type of industrial dryer that can be used to used to dry materials such as biomass, sludge, wood chips, sawdust, and other organic materials. It is commonly used in the wood processing industry, as well as in the biomass and biofuel industries. They are efficient and cost-effective, and can handle large volumes of sawdust.

Rotary drum dryers can also be used in the agricultural, chemical, and mineral industries for drying a variety of materials such as grains, fertilizers, and ores. They are also used in the food industry for drying fruits, vegetables, and other food products.

Working Principle

This kind of dryer machine works by feeding sawdust into a rotating drum, which is heated by a burner. As the drum rotates, the sawdust is lifted and cascaded through the hot air, which evaporates the moisture.



The drum is the main component of the rotary drum dryer. It is a cylindrical shell made of steel or other materials that rotates on its axis. The drum is usually slightly inclined to facilitate the movement of the material through the dryer.


The drum is also equipped with lifting flights or paddles that help to lift and tumble the material as it moves through the dryer, ensuring that it is evenly exposed to the hot air and that it dries uniformly.

Features of The Rotary Drum Dryer

  • High capacity: Rotary drum dryers can handle large quantities of material, making them ideal for industrial applications.
  • Versatility: Rotary drum dryers can be used to dry a wide range of materials, including biomass, minerals, and chemicals.
  • Energy efficiency: Rotary drum dryers are energy-efficient, as they use less energy than other types of dryers.
  • Uniform drying: Rotary drum dryers provide uniform drying, ensuring that all parts of the material are dried evenly.
  • Low maintenance: Rotary drum dryers are easy to maintain and require minimal maintenance.
  • Reduced emissions: Rotary drum dryers can be designed to reduce emissions, making them environmentally friendly.
  • Cost-effective: Rotary drum dryers are cost-effective, as they are relatively inexpensive to operate and maintain.

How The Rotary Drum Dryer Works

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