Circulation Drying Machine

The Circulation Drying Machine uses a multi-layer belt drying system for continuous feed drying. Materials are evenly distributed on the conveyor belt while hot air passes through them to remove moisture.

The dryer can use coal-fired heating, electric heating, steam heating or hot-air heating. To save installation space, it can be configured with 3, 5 or 7 layers and is suitable for drying feed and various other materials.

Purpose of Drying

• Improve feed stability and extend product storage time.
• Improve physical properties of pellet feed, including hardness, taste and density.
• Reduce material viscosity for subsequent processing.
• Reduce moisture content.
• Help prevent microorganism growth and toxin production.

Drying Mechanism

Moisture within the feed pellets moves toward the surface as surface moisture evaporates. The drying medium then carries away the vaporised moisture, gradually reducing the moisture content of the pellets.

Drying Process Classification

Pellet-feed drying involves both heat transfer and mass transfer. According to the method used to transfer heat to the wet material, drying can be classified as:

Conduction Drying • Convection Drying • Radiation Drying • Combined Drying

Machine Functions

01 – Feed Pellet Drying

Freshly extruded feed pellets can contain 22% or more moisture. The drying equipment removes more than 10% of this moisture before the pellets are cooled to meet finished-product requirements.

02 – Continuous Belt Drying

The belt dryer provides a fully automated and continuous drying process, designed to achieve the required moisture reduction efficiently.

03 – Customisable Belt Structure

Depending on the material, the dryer can use a double-layer high-temperature-resistant polyester mesh belt or a stainless-steel crawler stencil structure, making it suitable for different particle sizes.

04 – Protects Pellet Quality

The drying process is designed to avoid damaging pellet surfaces, maintain pellet appearance, provide flexible drying-quality adjustment and improve moisture uniformity while preserving nutritional content.

Product Features

1. Recycles hot air to help save energy.
2. Uses a specialised air-distribution system to distribute hot air evenly.
3. Suitable for materials requiring a low drying rate and longer drying time.
4. Suitable for drying feed pellets, aquatic pellets and cereals.
5. Helps keep dried granules intact without breaking them.

Product Parameters