10-15 T/H Steam Granulation NPK Rotary Drum Fertilizer Line

The 10-15 T/H Steam Granulation NPK Rotary Drum Fertilizer Line is an industrial-capacity wet granulation plant designed for high-volume compound fertilizer manufacturers processing chemical salts such as urea, ammonium sulfate, DAP, MAP, and potassium chloride.

By injecting pressurized steam directly into the tumbling material bed inside the inclined cylinder, the process elevates material temperature and activates moisture binding without adding excess water. This steam-assisted thermal agglomeration technique speeds up granule formation, reduces fuel consumption in the downstream drying stage, and yields hard, smooth spherical NPK granules. The complete 10–15 T/H plant integrates dynamic multi-hopper loss-in-weight batching scales, heavy chain crushers, high-efficiency steam-injected drum granulators, rotary drying and cooling drums, multi-deck sizing screens, anti-caking coating units, and automated packaging scales. Manufactured by Gofine Machine with corrosion-resistant anti-stick rubber drum linings, heavy cast steel drive gears, and central PLC automation, this line achieves granulating yields exceeding 90% with low operational downtime.

To ensure operational stability and long-term reliability, the Gofine rotary drum granulator incorporates several precision-engineered features:

• Corrosion-Resistant Interior: The internal drum is lined with specialized UHMW-PE (Ultra-High Molecular Weight Polyethylene) or acid-resistant stainless steel plates. This minimizes material sticking and protects the shell from the corrosive nature of ammoniated compounds.
• Enhanced Granulation Rate: Through the optimization of drum inclination (typically 2.0% to 5.0%) and rotational speed, the system achieves a granulation rate exceeding 90%, with fewer fines requiring recycling.
• Steam Injection Technology: Integrated steam piping allows for the adjustment of material temperature and moisture levels, ensuring optimal plasticity for granule formation without relying on excessive liquid binders.
• Heavy-Duty Transmission: Featuring a large cast steel gear and a high-performance motor-reducer assembly, the unit maintains stable torque even under full-load conditions (capacities ranging from 1 t/h to 20 t/h).

This granulation system is highly versatile and suitable for:

• High-Concentration Compound Fertilizer: Producing formulas like 15-15-15 or 20-20-10.
• Ammoniation Granulation Processes: Integrating liquid ammonia, phosphoric acid, or sulfuric acid.
• Organic-Inorganic Mixtures: Processing bio-organic materials that require a specific moisture-heat balance for pelletizing.

The production sequence in the drum is a coordinated mechanical and chemical process:

• Material Feeding: Base powders (such as Urea, MAP, or Potassium Chloride) are fed into the rotating drum at a constant rate.
• Ammonia/Steam Injection: Under the rolling bed of material, gaseous ammonia steam are injected. The resulting chemical heat and moisture soften the particles.
• Rolling & Agglomeration: As the drum rotates, the softened materials collide and adhere to each other, forming spherical "seeds" that grow into full-sized granules through centrifugal force.
• Discharge: The finished granules exit the drum and are conveyed to drying and cooling units to finalize their structural hardness.

As a specialized manufacturer, we focus on equipment longevity and process efficiency. Our designs prioritize minimized maintenance intervals and stable operational performance. We provide comprehensive layout designs and technical support to ensure the equipment integrates seamlessly into your existing production plant.