2025-06-21
Extrusion granulators are key shaping equipment in fertilizer production, directly compressing powdered materials into granules without binders, serving as core equipment for high-concentration compound fertilizers.
The granulation process completes in three steps:
1. Feeding & Compression: Powder materials are forced into mold holes
2. Forming & Extrusion: Cylindrical granules form under high pressure
3. Cutting & Shaping: Rotating blades cut extruded strips into uniform granules
1Material Feeding
Powdered materials are evenly fed into the granulator through a feeder
2Compression
Materials are strongly compressed between rollers and die, forming strips through die holes
3Cutting
Rotating blades cut the extruded strips into uniform granules
4Discharge
Formed granules are discharged through the outlet to next process
Working principle of extrusion granulator
|
Advantage |
Performance |
Economic Benefit |
|
Energy Saving |
30-50% energy saved by eliminating drying process |
15-20% production cost reduction |
|
Material Adaptability |
Handles high-concentration, hard materials |
98% raw material utilization rate |
|
Granule Quality |
High strength, low breakage rate |
95% premium product rate |
|
Easy Operation |
One-button start, automatic control |
30% labor cost reduction |
Extrusion granulators can integrate with:
· Pre-treatment: Crushers and mixers
· Post-treatment: Coolers, screens, coating machines
· Parallel Systems: 3-5 units for large-scale production
1. Smart Control: Real-time monitoring and auto-adjustment
2. Wear-resistant Materials: Tungsten carbide extends mold life 3x
3. Modular Design: 30-minute product changeover with quick mold replacement
References:
[1] "Fertilizer Production Equipment & Technology Manual" 2023 Edition
[2] IFA Extrusion Granulation Technology Report
[3] Bühler Group Extrusion Granulator White Paper