Introduction
When designing a biofertilizer production line, choosing the right granulation machine is critical for ensuring product quality and operational efficiency. Two of the most common types of granulators used in biofertilizer manufacturing are the disc granulator and the drum granulator. Each has its own advantages, limitations, and ideal applications. This blog will help you compare them in a practical, professional, and accessible way.
1. Granulation Principles and Operating Mechanism
- Disc Granulator: Uses a rotating pan and adjustable angle to agitate and shape powdery material into granules with the help of water or binders.
- Drum Granulator: A large, rotating cylindrical drum continuously tumbles raw material, allowing granule formation through layering and agglomeration.
Both use wet granulation, but the disc granulator offers more precise control, while the drum granulator is better suited for high-throughput operations.
2. Production Capacity and Scale
- Pan granulator:
- Ideal for small to medium biofertilizer plants (1–6 t/h)
- Easier to install and operate
- Perfect for project startups and decentralized plants
- Drum Granulator:
- Designed for medium to large-scale facilities (5–20 t/h or more)
- Better for centralized, industrial-scale production
Recommendation: Choose based on your target production volume and available space.
3. Granule Size Control and Uniformity
- Disc Granulator:
- Offers better control over granule size by adjusting pan angle and moisture content
- Generally produces more uniform, round granules
- Drum Granulator:
- Suitable for larger-sized granules but with slightly wider size variation
- Effective for robust, high-strength pellets
If granule appearance and precision matter, disc granulation is often preferred.
4. Maintenance and Operation
- Disc Granulator:
- Simple structure, fewer moving parts
- Easier to clean and maintain
- Drum Granulator:
- Requires more maintenance due to longer drum length and internal components
- Suitable for experienced operators
Conclusion
Both granulators can produce high-quality biofertilizer pellets when matched with the right process and raw material. In general:
- Use a disc granulator for small to medium production, better granule control, and lower operational complexity.
- Choose a drum granulator for high-output projects where efficiency and durability are priorities.
📌 Still unsure which is right for your plant? Explore our full range of granulation solutions or contact our experts for custom equipment recommendations.
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