Convective Rotary Drum Dryer

Convective drum dryer ABM

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Convective rotary drum dryers are used for drying granular, loose and bulk materials. They can be used for drying salt, coffee, various granules, powders, grain, nuts, seeds, fruit/vegetable bagasse, and many other products. When used in other industries, the dryer allows for the drying of salt, sand, expanded clay granules, and other similar non-flammable substances. For more information, send us a request.

The drum dryer can be configured to operate with either electric heating or gas heating (which can offer a lot more power), depending on your specific requirements and preferences.

Warning: It is not recommended to use the gas heating option for drying substances that are highly flammable, as doing so could pose a significant fire risk.

Convective rotary drum dryer for grain and spices

The product is introduced into the drying machine through a small hopper, where hot air is injected directly into the drum. The drying machine operates on a simple yet highly efficient principle. As the drum rotates, the product begins to tumble inside it. The combined action of the hot airflow and the drum's rotation gradually dries the material. This dryer, utilizing a convective drying method, is specifically designed for drying bulk materials through the simultaneous effects of hot airflow and the drum's rotational movement.

Dryers are designed for drying bulk materials and are suitable for continuous operation. The standard version is equipped with a 150 W circulation fan to provide a consistent flow of heated air throughout the drying process.

When ordering a dryer, you can choose the heat source. The electric version is available with 15 kW or 30 kW heating elements, while an optional gas (LPG) heater is also available. For applications requiring accurate temperature control, the electric version can be optionally equipped with a precision thermal controller, allowing the drying temperature to be automatically regulated according to the selected process parameters.

When selecting a heat source, it is important to note that the gas-heated version is not suitable for drying flammable or combustible products, as well as completely dry substances. In such cases, the materials being dried must have sufficient moisture content to prevent combustion. Additionally, the equipment and operating area for the dryer must be equipped with a fire extinguishing system.

Main components of the rotary drum dryer:

  • Rotary drum with paddles for drying
  • Robust stainless steel frame
  • Lifting mechanism for adjusting the drum angle
  • Stainless steel hopper for product loading
  • 150 W hot air circulation fan
  • Electric heater (15 kW or 30 kW) or optional gas (LPG) hot air generator

Drum dryers are widely used in sectors such as:

  • food processing
  • agriculture
  • chemical
  • construction
  • and other industrial fields.

Products that can be dried using convective rotary dryers:

Food industry

  • salt
  • coffee
  • grain
  • seaweed
  • nut bagasse
  • seeds
  • seed bagasse
  • fruit bagasse
  • vegetable bagasse
  • granules and others, etc.

Chemical industry

  • salts
  • sand
  • clay
  • expanded clay granules, etc.

Not recommended for drying products that are too powdery or tend to become excessively airborne during mixing and drying.

Additional options:

  • Protective covers for enhanced operator safety during operation
  • Frequency converter to adjust the drum rotation speed
  • Precision thermal controller for automatic temperature regulation
  • Electric or gas powered hot air generator
  • Feeding conveyor for consistent dosing
  • Cyclone dust collector for airborne particles
  • Material: Stainless steel
  • Principle of operation: Continuous mode
  • Country of origin: Slovakia