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The Rotary Drum Ammoniation Granulator is a core component in large-scale compound fertilizer production lines, specifically engineered for the manufacturing of high-concentration NPK and complex fertilizers. Unlike cold granulation methods, this equipment utilizes a chemical reaction (ammoniation) and steam heat to transform raw materials into uniform, high-strength granules.
By injecting gaseous ammonia or nitrogen solutions directly into the material bed, the granulator facilitates a controlled chemical process that enhances nutrient distribution. This equipment is an ideal choice for fertilizer manufacturers seeking to balance high output with consistent particle integrity.
Technical Features & Advantages
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).
Application Scope
This granulation system is highly versatile and suitable for:
High-Concentration Compound Fertilizer: Producing formulas like 15-15-15 or 20-20-10.
Organic-Inorganic Mixtures: Processing bio-organic materials that require a specific moisture-heat balance for pelletizing.
Working Process: How It Functions
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.
Why Choose Gofine Solutions?
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.
GOFINE MACHINE is a premier manufacturer and total solution provider in the fertilizer equipment industry. We specialize in the design, engineering, manufacturing, and installation of complete fertilizer production lines, including high-efficiency fertilizer granulators, composting equipment, o... GOFINE MACHINE is a premier manufacturer and total solution provider in the fertilizer equipment industry. We specialize in the design, engineering, manufacturing, and installation of complete fertilizer production lines, including high-efficiency fertilizer granulators, composting equipment, o...