High Capacity NPK Fertilizer Drum Granulation Equipment Plant

For commercial fertilizer manufacturers aiming to maximize daily output and lower unit operational costs, system throughput and continuous reliability are paramount. The High Capacity NPK Fertilizer Drum Granulation Equipment Plant is designed specifically to meet large-scale industrial demands, transforming vast volumes of raw chemical powders—including urea, ammonium sulfate, DAP, MAP, and potassium chloride—into uniform, high-density spherical NPK granules.

By harnessing steam-assisted or liquid-injected wet agglomeration inside an optimized, continuous inclined rotating cylinder, fine particles tumble smoothly, binding into hard, dust-free granules under controlled surface tension and mechanical rolling forces. The plant seamlessly integrates high-throughput loss-in-weight dynamic batching units, heavy-duty chain crushers, high-capacity rotary drying and cooling drums, multi-deck rotary sizing screens, anti-caking oil coating units, and automated quantitative bagging scales. As a dedicated factory supplier, Gofine Machine builds this high-capacity plant with thick-walled alloy steel shells, precision-machined heavy drive gears, and corrosion-resistant, anti-stick flexible rubber or stainless steel inner liners—ensuring granulating yields above 90% and stable 24/7 continuous operation.

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.