Double Roller Fertilizer Granulator for Compound & Organic Fertilizer Production

In modern fertilizer manufacturing, eliminating energy-intensive drying processes while achieving high pelletization density is a primary operational objective. The Double Roller Fertilizer Granulator is an advanced extrusion pelletizing machine engineered specifically for dry-process granulation without requiring binders or external moisture additions. It is widely utilized across compound NPK fertilizer plants, organic-inorganic fertilizer lines, and specialized chemical fertilizer production facilities.

Operating on a ambient-temperature dry extrusion principle, fine raw materials (such as urea, ammonium sulfate, potassium chloride, DAP, MAP, and fermented organic compost powders) are fed into a mechanical hopper and forcibly compressed between two high-strength counter-rotating roller shells. The intense hydraulic or mechanical pressing force transforms the loose powder into high-density sheets or solid blocks, which are subsequently broken down and shaped by an integrated sizing and screening circuit into uniform, hard-surfaced granules. Manufactured by Gofine Machine with wear-resistant alloy roller shells, heavy-duty gearboxes, and centralized PLC automation, this double roller granulator achieves high single-pass pelletization yields, reduces energy consumption, and prevents thermal degradation of heat-sensitive nutrients.

• No Drying Required: Dry extrusion process eliminates the need for drying equipment, saving 30-50% energy
• Wide Application: Suitable for over 20 types of raw materials including NPK, DAP, MAP, ammonium chloride, and organic materials
• High Granulation Rate: ≥90% granulation rate ensures minimal material waste 
• Customizable Granule Shape: Ball, oval, rod, and pill shapes available by changing roller molds
• Low Temperature Operation: Process temperature stays below 40°C, preserving nutrient integrity
• Compact Design: Space-saving footprint suitable for both small and large production facilities

The double roller granulator works on the principle of extrusion granulation. Raw materials are fed into the hopper and transported to the gap between two counter-rotating rollers. The rollers, equipped with matching hemispherical cavities, compress the material into dense granules as they pass through. The compacted sheets are then broken into individual granules and screened to the desired size.
Unlike wet granulation methods, this dry extrusion process requires no drying or cooling equipment, significantly reducing energy consumption and production costs.

Applicable Raw Materials
NPK compound fertilizers (urea, DAP, MAP, ammonium chloride, ammonium sulfate)
Organic materials (chicken manure, cow dung, pig manure after composting)
Mineral fertilizers (potassium chloride, potassium sulfate)
Bentonite, kaolin, and other industrial powders
Cat litter and absorbent materials

Application Scenarios
NPK compound fertilizer production lines (1-50 t/h)
Organic fertilizer granulation plants
BB fertilizer manufacturing facilities
Cat litter and industrial granule production
Mineral powder granulation

Why Choose Gofine's Double Roller Granulator?
10+ years of manufacturing experience
ISO9001 quality certified, CE compliant
Customizable roller materials (stainless steel, alloy steel) for different applications
OEM/ODM service available
Complete after-sales support including installation and training
Exported to 50+ countries worldwide

FAQ
Q: What granule sizes can the double roller granulator produce? A: Standard sizes range from 3mm to 10mm. Custom sizes
are available upon request by changing the roller mold.
Q: Does the machine require a binder for granulation? A: For most compound fertilizer materials, no binder is needed. For
some organic materials with low stickiness, a small amount of binder may be required.
Q: What is the delivery time? A: Standard models: 15-20 days. Customized models: 25-35 days.
Q: Do you provide installation service? A: Yes, we provide on-site installation, commissioning, and operator training. Remote
guidance is also available.
Q: What warranty do you offer? A: 12 months warranty from the date of delivery, excluding wearing parts (roller skins).

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