50,000–100,000 TPY Rotary Drum Steam NPK Fertilizer Production Line with 1-10 Tons per Hour and ≥90% Granulation Rate

Automatic steam granulation line designed for high-capacity NPK fertilizer production with optimal efficiency and uniform granule quality.

Raw materials are precisely metered by computerized belt weighers and fed into a rotary drum granulator. Saturated steam is injected directly into the rolling material bed, where it condenses and releases heat that partially dissolves chemical bonds (such as urea), creating a highly uniform liquid phase.

Under this optimal thermal-moisture state, the powder spheres easily roll into dense pellets. The resulting wet pellets proceed through a massive rotary dryer for moisture removal, followed by cooling in a counter-flow cooler, screening for size grading, anti-caking oil application, and final automated bagging.

This production line serves as the global standard for large commercial NPK operations. It is specifically tailored for high-capacity, high-concentration compound fertilizer manufacturing, including formulations such as NPK 15-15-15 or high-nitrogen blends like 20-10-10.

• Prilled or pulverized urea
• Ammonium nitrate
• Ammonium sulfate
• Diammonium phosphate (DAP)
• Triple superphosphate (TSP)
• Potassium chloride
• Inert fillers (such as clay or talc powder)