Fertilizer Production Lines

Fertilizer production lines process chemical fertilizer ingredients or organic feedstocks, such as livestock manure and crop residues, into finished granular or powdered fertilizers.

Compacted Compound Fertilizer Production Line

Compacted Compound Fertilizer Production Line

Compacted compound fertilizer production lines turn powdered raw materials into granules at ambient temperature, so no heating is required during the forming stage.

The powders are first pressed into dense sheets, which are then crushed and screened to produce flattened granules or flakes measuring 3–10 mm. Compaction granulation is suitable for ammonium sulfate, ammonium chloride, potassium chloride, potassium sulfate, salts, bulk blend fertilizer ingredients, and binary or ternary compound fertilizers with nutrient contents of 25%–53%.

Our compacted compound fertilizer production lines can be customized in layout and annual capacity, with a compact process design, lower energy use, reduced environmental impact, stable operation and easier maintenance.

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Production Process
  • Preparation and Mixing of Raw Material

    Compacted compound fertilizer production starts with the crushing and screening of fermented organic waste with a moisture content of around 30%–35% to improve particle uniformity. It then goes through magnetic separation to remove impurities. After this, the treated material is mixed with binders and other components according to the fertilizer formulation. All materials are carefully measured and blended into a batching system until a consistent mixture is obtained for the next stage.

  • Material Feeding and Granulation

    The prepared mixture is first transported by a fixed belt conveyor to the feeding system; there a disc feeder ensures a steady and continuous flow into the granulator. Inside the granulator, the material gradually becomes column-shaped particles with similar diameter and length thanks to the continuous movement and aggregation.

  • Shaping and Polishing

    The column-shaped particles are conveyed by belt to a polishing and shaping unit that gradually smooths them into more uniform spherical granules through continuous movement and friction.

  • Low-Temperature Drying

    The spherical granules are dried in a low-temperature, high-airflow dryer designed for organic fertilizer production, while exhaust gases are treated through a dust removal system to control emissions.

  • Cooling and Screening

    After drying, the fertilizer granules are cooled using air in a cooling and screening system. Exhaust gases are treated again through a dust removal system. Once the granules are cooled, they pass through a screen that is installed at the end of the production line, separating fine powder and oversized particles, both of which are returned to the mixing and granulation stage for reprocessing.

  • Final Packaging

    Qualified granules are transported to a finished product silo, then measured and packed using an automatic quantitative packaging system before storage or shipment.

Production Process Diagram
Production Process Diagram
Suitable Formulations for Compaction
Product Type Typical Formulations (N-P-K) Raw Material Description
Nitrogen-based compound fertilizer 15-15-15, 16-16-16 Ammonium chloride, ammonium phosphate, and potassium chloride are commonly used. Ammonium chloride also helps improve binding during compaction.
Sulfur-based compound fertilizer 16-8-18, 15-15-15 (sulfur based) Ammonium sulfate, phosphate sources, and potassium sulfate are used. Ammonium sulfate is harder in structure and usually requires finer grinding before processing.
Organic–inorganic compound fertilizer 10-5-10 (organic matter ≥20%) Suitable for compaction processing. Fermented poultry manure and humic acid powders can be directly blended with inorganic nutrients.
Special-purpose fertilizer 25-10-5 (high nitrogen) Higher levels of ammonium chloride or ammonium sulfate are used to support stronger granule formation.
Finished Fertilizer Granules
  • Finished Fertilizer Granules
  • Finished Fertilizer Granules
  • Finished Fertilizer Granules
Main Equipment
  • Roller Compactor Dry GranulatorRoller Compactor Dry Granulator
  • DryerDryer
  • Cooling EquipmentCooling Equipment
  • Coating MachineCoating Machine
  • Rotary Drum ScreenRotary Drum Screen
  • Hammer Roller CrusherHammer Roller Crusher
  • Baghouse Dust CollectorBaghouse Dust Collector
  • Packing and Palletizing EquipmentPacking and Palletizing Equipment
Customer Projects
  • 128 Installed Compaction Granulation Lines128 Installed Compaction Granulation Lines
  • 48 Installed Compaction Granulation Lines48 Installed Compaction Granulation Lines
  • 12 Installed Compaction Granulation Lines12 Installed Compaction Granulation Lines