No-Drying Fertilizer Production Equipment: Double Roller Extrusion Granulator
Overview
The Double Roller Extrusion Granulator, also known as a Dry Granulation Machine or Roll Press Compactor, is an advanced industrial equipment designed for transforming fine powders into dense, uniform granules without liquid binders. This machine utilizes Roll Press Compaction technology, where two synchronized, counter-rotating rollers apply extreme mechanical pressure to force raw material through precisely designed molds. The resulting sheet-like material is then broken down into uniform granules.
This granulation equipment excels in material densification, making it ideal for fertilizer production, chemical processing, and mineral agglomeration. It represents a clean, economical, and scalable solution for powder-to-granule conversion in continuous granulation processes.
Key Features
- Dry Granulation Process: Produces granules without moisture or liquid binders, eliminating drying steps and saving energy.
- High Pressure Roller Compaction: Robust rollers with hydraulic/spring-pressure system deliver high compression for hard, dense granules.
- Excellent Material Densification: Increases bulk density, improves storage/transport efficiency, and reduces dust.
- Continuous Automated Operation: High throughput with stable output quality and minimal operator intervention.
- Versatility: Processes fertilizers, chemicals, minerals, and industrial powders with customizable granule size/shape.
- Environmentally Friendly: Closed system minimizes dust pollution and avoids wastewater generation.
- Low Maintenance: High-wear-resistant materials ensure long service life and reduced downtime.
Applications
The Double Roller Extrusion Granulator serves multiple industries with its versatile capabilities:
- Fertilizer Granulation: Produces compound fertilizers, NPK fertilizers, and organic-inorganic blends from materials like ammonium chloride and potassium chloride.
- Chemical Granulation: Processes pigments, dyes, resins, pesticides, and insecticides to improve flowability.
- Mineral/Metal Industry: Agglomerates metal powders, coal fines, carbon black, and ores for improved handling.
- Pharmaceutical/Food Industry: Enables dry granulation for powder formulations requiring improved compression or flow properties.
- Other Industries: Used in ceramics, refractories, and recycling industrial by-products into granular forms.
Working Process
The continuous mechanical cycle consists of these stages:
1. Feeding: Powder material is fed uniformly into the hopper via screw conveyor.
2. Compaction Zone: Material enters the gap between counter-rotating rollers.
3. High-Pressure Extrusion: Rollers exert extreme pressure to compact material into solid sheets.
4. Sheet Formation: Compacted material exits as patterned sheets/ribbons.
5. Crushing/Sizing: Sheets are broken into fragments and screened for uniform granules.
6. Recycling: Fines and oversized particles are reprocessed for zero waste.
7. Final Output: Uniform granules are discharged for packaging/processing.
For enhanced granule quality, this equipment can be paired with a spheroidizing machine for spherical shaping or integrated into complete automated production lines.
Product Details
Complete double-roll extrusion granulation production line
About Us
Gaofen Machinery is a leading agricultural equipment supplier offering comprehensive products and services worldwide:
- Agricultural Equipment Supply: Complete range of fertilizer production machinery including granulators, crushers, mixers, dryers, and complete production lines.
- Expert Technical Support: Professional consultation for equipment selection and process optimization.
- Installation & Commissioning: Professional setup ensuring optimal equipment performance.
- Comprehensive Training: Customized programs for operational and maintenance skills.
- Reliable After-Sales: Maintenance, troubleshooting, and genuine spare parts supply.
- Customized Solutions: Personalized equipment and production lines for specific requirements.
Contact us today to explore partnership opportunities and discover how our innovative agricultural machinery can drive your success.
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