Fertilizer Coating Machine

The coating machine melts the coating material in the heating tank and then sprays it onto the fertilizer.

Product Features

With “solving fertilizer coating pain points, ensuring uniform coating & functional stability” as the core goal, our fertilizer coaters integrate targeted technologies:

  • Uniform Coating for Diverse Fertilizer Granules:

For irregular organic fertilizer granules (manure/straw-based): Adopt “rotary drum + multi-point spray” design, with adjustable drum speed (10-30 rpm) and spray pressure (0.3-0.8 MPa), ensuring coating coverage ≥98% and thickness variation ≤0.1mm;For regular chemical fertilizer granules (urea/ammonia phosphate): Use “fluidized bed + air-blowing coating” technology, creating a stable air cushion to suspend granules, avoiding collision damage and realizing 360° uniform coating.

  • Multi-Coating Material Compatibility:

Compatible with all fertilizer coating materials—water-based anti-caking agents (for organic fertilizer), solvent-based slow-release resins (for compound fertilizer), and liquid microbial agents (for biological fertilizer);Equipped with temperature-controlled material tanks (5-60℃ adjustable) to maintain coating material fluidity (critical for high-viscosity resins), avoiding clogging.

  • Strong Coating Adhesion & Wear Resistance:

Add “post-coating hot air curing” module (temperature 40-80℃) to enhance coating adhesion—after testing, coating shedding rate is ≤2% during transportation (vs. 8%-12% for ordinary coaters);For abrasive fertilizer granules (e.g., mineral-based fertilizer), the coater inner wall is lined with wear-resistant polyurethane (HRC 65+), extending service life to 7-9 years.

Application Scenarios (Fertilizer Production Links)

Our fertilizer coaters cover all coating links of fertilizer production lines, targeting different fertilizer types:

  • Organic Fertilizer Anti-Caking Coating: Rotary drum coaters for fermented organic fertilizer granules (particle size 2-5mm), applying natural anti-caking agents (e.g., attapulgite powder suspension) to reduce caking rate from 40% to ≤5% during storage.
  • Chemical Fertilizer Slow-Release Coating: Fluidized bed coaters for compound fertilizer/urea granules, coating slow-release resins (e.g., polyurethane) to extend nutrient release period from 1-2 months to 3-6 months, improving fertilizer utilization.
  • Biological Fertilizer Microbial Coating: Low-temperature coating machines (35-50℃) for microbial fertilizer granules, applying liquid microbial agents (e.g., nitrogen-fixing bacteria) with “cold air drying” to retain 95%+ viable bacteria, meeting GB/T 23473 standards.
  • Special Fertilizer Nutrient Enhancement: Customized multi-layer coaters for trace element fertilizer, coating zinc/boron chelates on basic fertilizer granules to realize “one granule with multiple nutrients”, suitable for high-value cash crops (fruits, vegetables).
  • Small-Batch & Large-Scale Production:

Mini rotary coaters (capacity 0.5-2 tons/hour) for small organic fertilizer workshops;Continuous fluidized bed coaters (capacity 5-20 tons/hour) for large compound fertilizer plants with 24/7 production needs.

Pricing System

Adopt “factory direct supply + fertilizer line customization” with no middlemen, cutting procurement costs by 18%-28% vs.

Why Choose Us for Fertilizer Coaters?

As a coater supplier specialized in fertilizer industry, we provide solutions tailored to fertilizer production needs:

  • Industry Expertise: 8-person R&D team (7+ years in fertilizer coating technology), holding 10 national patents (e.g., “Organic Fertilizer Anti-Caking Coating System”, “Low-Temperature Microbial Fertilizer Coater”);
  • Tailored Customization: Analyze fertilizer type (organic/chemical/biological), granule size (1-8mm), and coating function (anti-caking/slow-release/nutrient) to optimize coater structure—e.g., adding anti-corrosion liners for acid-based fertilizer coating, or increasing spray points for irregular organic granules.
  • Proven Success Cases:

A 30,000-ton/year organic fertilizer plant in China reduced storage caking rate from 38% to 4% with our rotary coater, cutting inventory loss by 25%;

A Brazilian compound fertilizer plant extended nutrient release period to 5 months with our fluidized bed coater, increasing product market price by 18%;

A U.S. microbial fertilizer enterprise retained 96% of viable bacteria with our low-temperature coater, passing EPA organic product certification.

Build High-Value Fertilizer Production Together

Whether you need to solve organic fertilizer caking, improve chemical fertilizer slow-release effect, or add nutrients to special fertilizer, we provide coaters that match your production line. Contact us for free coating tests (using your fertilizer samples to verify uniformity and adhesion) and customized quotes—our team helps you enhance fertilizer quality and market competitiveness.

FAQ

Pre-select the materials in advance to ensure uniform particle size; adjust the coating solution concentration through experiments to the optimal range (usually determined based on the characteristics of the coating material); calibrate the roller speed according to the material properties (generally adjusted between 10-30 r/min); regularly clean the nozzle debris, inspect and adjust the nozzle angle to ensure uniform atomization.
The coating solution was not dried sufficiently, resulting in an unstable film layer; the surface of the material particles was damp or contained impurities, which affected the adhesion; the coating layer was too thick, leading to increased brittleness; the drying temperature was too low or the drying time was insufficient.
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