Double Roller Press Type Dry Powder Fertilizer Granulator Machine

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).

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 offers 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 sizes.
• 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 has 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 extreme pressure to compact material into a solid sheet.
4. Formation of Sheet/Ribbon: Compacted material exits as a thin, dense sheet with specific patterns.
5. Crushing and Sizing: Sheet is broken down into smaller 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 the final product.

This equipment can be used with a spheroidizing machine for better granule quality or integrated into a complete automated granulation production line.

As a leading agricultural equipment supplier, Gaofen Machinery offers:

• Comprehensive range of high-efficiency agricultural machinery
• Expert technical support and consultation
• Professional installation & commissioning services
• Comprehensive training programs
• Reliable after-sales service and spare parts
• Customized solutions for specific requirements

Contact us today to explore partnership opportunities and discover how our innovative agricultural machinery and solutions can drive your success.