A hollow blade dryer is a type of industrial equipment used for drying materials. It is particularly effective for handling pastes, powders, and slurries. Here's a quick overview of how it works and its benefits:
How It Works
- Design: The dryer consists of a horizontal trough containing rotating hollow blades. These blades are heated internally by a thermal fluid (like steam or oil).
- Operation: As the material is fed into the dryer, it is mixed by the rotating blades. The heat from the blades transfers to the material, evaporating moisture.
- Efficiency: The design allows for efficient heat transfer and uniform drying, often reducing drying times significantly.
Technical Parameters:
Model | KJG-2.7 | KJG-24 | KJG-52 | KJG-81 | KJG-110 |
Heat transfer area | 2.7 | 24 | 52 | 81 | 110 |
effective volume | 0.06 | 1.53 | 3.96 | 6.43 | 9.46 |
revolution | 15-30 | 10-20 | 10-20 | 5-15 | 5-10 |
power | 2.2 | 11 | 30 | 55 | 95 |
width of dryer body | 306 | 1118 | 1474 | 1828 | 2210 |
total width | 736 | 1474 | 1854 | 2286 | 2668 |
length of dryer body | 1956 | 3454 | 5258 | 6020 | 6122 |
total length | 2972 | 6147 | 8306 | 9678 | 9880 |
distance between feeding and disharging | 1752 | 3150 | 4954 | 5562 | 5664 |
height in center | 380 | | 1066 | 1220 | 1220 |
total height | 762 | | 2032 | 2464 | 2668 |
steam inlet | (2) 3/4 | (2) 1 | (2) 11/2 | (2) 11/2 | (2) 2 |
water outlet | (2) 3/4 | (2) 1 | (2) 11/2 | (2) 11/2 | (2) 2 |
Applications:
A hollow blade dryer is a specialized industrial equipment used for drying various materials. Here are some key applications:
1. Food Processing
- Drying Fruits and Vegetables: Used to remove moisture from products like potatoes, carrots, and fruits, maintaining quality and extending shelf life.
- Powder Production: Ideal for drying and granulating food powders, such as milk powder or starch.
2. Chemical Industry
- Chemical Powders: Effective for drying chemical substances and intermediates, ensuring uniform moisture content.
- Granulation: Often used to produce granulated materials from fine powders.
3. Pharmaceuticals
- Active Pharmaceutical Ingredients (APIs): Utilized for drying APIs, ensuring they meet strict quality and safety standards.
- Granulation of Formulations: Helps in the production of granules for tablets and other dosage forms.
4. Mineral Processing
- Mineral Concentrates: Efficient in drying concentrates from mineral processing, such as talc or clay, reducing shipping weight and improving handling.
5. Recycling
- Waste Materials: Can be used to dry recycled materials, such as plastics, before further processing.
6. Textiles
- Fiber Drying: Used in the textile industry for drying fibers and fabrics, ensuring they are ready for further processing.

Benefits
- Energy Efficiency: The design minimizes energy consumption due to efficient heat transfer.
- Compact Design: Requires less space compared to other drying systems.
- Versatility: Suitable for a wide range of materials, including heat-sensitive products.
- Consistency: Provides uniform drying with minimal risk of overheating or degradation.