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10,000–300,000 t/y NPK Double Roller Granulation Line – High Efficiency, Low Investment
10,000 -300,000 t/y NPK Double Roller Granulation Line - High Efficiency, Low Investment
NPK Fertilizer Production Line Overview
The Double Roller Extrusion Granulation Line is a modern, energy-efficient solution for producing NPK compound fertilizer, organic fertilizer, and BB fertilizer. Unlike traditional wet granulation processes, this line uses a dry extrusion method - no drying or cooling required, significantly reducing energy consumption and investment cost.
With annual capacity ranging from 10,000 to 300,000 tons, this production line is ideal for small to medium-sized fertilizer plants seeking high efficiency, low operating costs, and flexible formula adjustment.
Process Flow
Batching - Raw materials (urea, MAP, DAP, MOP, SSP, ammonium sulfate, etc.) are proportioned automatically.
Mixing - Materials are blended uniformly in a horizontal mixer.
Granulation - Double roller extruder presses the mixture into flakes or strips under high pressure.
Crushing & Screening - Flakes are crushed and screened into spherical granules.
Polishing (Optional) - Granules are rounded for smooth surface and uniform size.
Coating (Optional) - Anti-caking coating applied if required.
Packaging - Finished granules are automatically weighed and packed.
Applicable Raw Materials
Nutrient
Common Raw Materials
Nitrogen (N)
Urea, ammonium sulfate, ammonium chloride
Phosphorus (P)
MAP, DAP, SSP, calcium-magnesia phosphate
Potassium (K)
MOP (potassium chloride), SOP (potassium sulfate)
Additives
Trace elements (B, Mn, Zn, etc.), anti-caking agents
Key Advantages
No Drying Required - Dry granulation process saves energy and eliminates dryer/cooler investment.
High Granulation Rate - Over 90% of material forms qualified granules directly.
Wide Raw Material Adaptability - Suitable for urea, MAP, DAP, MOP, SSP, ammonium chloride, ammonium sulfate, etc.
Flexible Formula - Easy to adjust NPK ratios for high, medium, or low concentration fertilizers.
Low Operating Cost - Simple process, less labor, minimal maintenance.
Stable Operation - Mature technology with reliable mechanical design.
Environmentally Friendly - No waste water or exhaust gas during production.
Applications
Production of high, medium, and low concentration NPK compound fertilizer
Manufacturing of organic compound fertilizer
Blended fertilizer (BB fertilizer) granulation
Urea-based, ammonium-based, and sulfate-based fertilizer production
Zhengzhou Shenghong Heavy Industry Technology Co.,Ltd.(Short for “Shenghong”)is recognized globally as an expert in process design and equipment manufacturer on fertilizer industry, including organic fertilizer production line with 5000 to 100000 tons per year and compound fertilize... Zhengzhou Shenghong Heavy Industry Technology Co.,Ltd.(Short for “Shenghong”)is recognized globally as an expert in process design and equipment manufacturer on fertilizer industry, including organic fertilizer production line with 5000 to 100000 tons per year and compound fertilize...
