Double Roller Extrusion Granulator for Complete Fertilizer Production Line

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 the need for liquid binders. This machine utilizes the principle of Roll Press Compaction, where two synchronized, counter-rotating rollers apply extreme mechanical pressure to the raw material, forcing it through precisely designed molds (roll surfaces). The resulting product is sheet-like material that is then broken down and screened into uniform granules.

This Granulation Equipment is widely recognized for its efficiency in Material Densification, making it a preferred choice in industries such as fertilizer production, chemical processing, and mineral agglomeration. It is a cornerstone of modern Continuous Granulation Processes, offering a clean, economical, and scalable solution for Powder to Granules conversion.

• Dry Granulation Process: Produces granules without adding moisture or liquid binders, eliminating the need for subsequent drying steps.
• High Pressure Roller Compaction: Equipped with robust rollers and powerful hydraulic/spring-pressure system for hard, low-moisture granules.
• Excellent Material Densification: Increases bulk density of raw materials, improving storage and transportation efficiency.
• Continuous and Automated Operation: Designed for seamless integration into production lines with high throughput.
• Versatility and Adaptability: Processes various materials including fertilizers, chemicals, and minerals with customizable granule size/shape.
• Environmentally Friendly: Closed system minimizes dust pollution and avoids wastewater generation.
• Low Maintenance and Robust Construction: Built with high-wear-resistant materials for long service life.

The Double Roller Extrusion Granulator is a versatile machine with extensive applications across multiple industries:

• Fertilizer Granulation: Producing high-quality compound fertilizers, NPK fertilizers, and organic-inorganic compound fertilizers.
• Chemical Granulation: Processing pigments, dyes, resins, pesticides, and insecticides.
• Mineral and Metal Industry: Agglomerating metal powders, coal fines, carbon black, and various ores.
• Pharmaceutical and Food Industry: Dry granulation for powder formulations to improve compression characteristics.
• Other Industries: Production of ceramics, refractories, and recycling of industrial by-products.

The working process of the Double Roller Extrusion Granulator is a continuous mechanical cycle:

1. Feeding: Raw powder material is fed uniformly into the granulator's hopper.
2. Compaction Zone: Material enters the gap between two counter-rotating rollers.
3. High-Pressure Extrusion: Rollers exert high pressure to compact material into a solid sheet.
4. Formation of Sheet/Ribbon: Compacted material exits as a thin, dense sheet with patterns.
5. Crushing and Sizing: Sheet is broken down into fragments and screened for uniform granules.
6. Recycling: Fines and oversized particles are recycled back to the feeding system.
7. Final Product Output: Uniformly sized granules are discharged as final product.

For better granule quality, this equipment can be used with a spheroidizing machine for spherical shaping and polishing, or integrated into a complete automated granulation production line.

As a leading agricultural equipment supplier with extensive export experience, Gaofen Machinery offers:

• Agricultural Equipment Supply: Wide variety of high-efficiency machinery including complete fertilizer production lines.
• Expert Technical Support: Professional consultation for equipment selection and process optimization.
• Installation & Commissioning: Professional setup ensuring operational readiness.
• Comprehensive Training Services: Customized programs for operational and maintenance skills.
• Reliable After-Sales Service: 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 and solutions can drive your success.