In fertilizer production, choosing the right granulation equipment is crucial for product quality and production efficiency. Disc granulators, rotary drum granulators, and drum granulators each have unique features. This article provides a detailed comparison to help you make an informed decision.
1. Disc Granulator Machine
Working Principle:
Material rolls into balls under centrifugal force and gravity on a tilted rotating disc, with binder spray assisting granulation.
Key Advantages:
- High granulation rate (85-95%)
- Excellent particle roundness
- Low energy consumption, easy operation
- Ideal for small batch multi-formula production
Best For:
Medium-small scale organic fertilizer, bio-fertilizer, and NPK compound fertilizer production, especially when frequent formula changes are needed.
1. Rotary Drum Granulator
Working Principle:
Material forms granules through rolling, agglomeration and compaction in a slowly rotating large drum.
Key Advantages:
- High capacity (up to 50 tons/hour)
- Suitable for high-moisture materials
- High particle strength
- Continuous production
Best For:
Large-scale NPK compound fertilizer, organic-inorganic compound fertilizer, and applications requiring high-strength granules.
3. Drum Granulator
Working Principle:
Combines drum rotation and extrusion principles, forming granules through both mechanical pressure and rolling action.
Key Advantages:
- High particle density
- Low moisture content
- Minimal dust pollution
- Strong adaptability
Best For:
Specialty fertilizers, micronutrient fertilizers, and applications requiring low moisture content and high-density granules.
Equipment Comparison
| Parameter | Disc Granulator | Rotary Drum Granulator | Drum Granulator |
| Capacity Range | 1-10 t/h | 10-50 t/h | 5-30 t/h |
| Energy Consumption | Low | Medium | Medium-High |
| Particle Characteristics | Good roundness | High strength | High density |
| Investment Cost | Low | High | Medium |
