Slow-release fertilizer granule urea coating machine
2025-08-14Introduction: Enhancing Urea with Coating Technology
In modern agriculture, slow-release urea fertilizer is becoming increasingly popular due to its ability to reduce nitrogen loss, improve nutrient utilization, and minimize environmental pollution. The key to producing high-quality coated urea granules lies in using a reliable and efficient urea coating machine designed for fertilizer surface treatment.
we offer advanced fertilizer granule coating machines that apply precise layers of polymer, sulfur, or bio-based coatings on urea or NPK fertilizer granules, turning standard fertilizers into controlled-release products.
What Is a Urea Coating Machine?
A urea coating machine is a specialized piece of fertilizer processing equipment used to coat the surface of urea granules with a protective or slow-release layer. This coating process enhances the fertilizer's performance by:
Slowing the nutrient release rate
Improving water resistance
Reducing ammonia volatilization
Preventing caking and moisture absorption during storage
How Does the Slow-Release Urea Coating Process Work?
The coating process typically involves the following steps:
1. Preheating the Granules
The urea granules are gently preheated to ensure better adhesion of the coating material.
2. Coating Application
In a rotary coating drum, the granules are tumbled while a fine mist of coating material (e.g. polymer resin, sulfur, wax) is sprayed evenly onto their surface.
3. Curing or Cooling
After coating, the granules are cooled or cured to solidify the coating and ensure durability.
Benefits of Using a Fertilizer Granule Coating Machine
Improves fertilizer quality and storage stability
Enhances fertilizer market competitiveness
Supports precision agriculture and environment-friendly farming
Compatible with existing fertilizer granulation lines
Reduces fertilizer application frequency by up to 50%
Integration with Fertilizer Granulation Equipment
Our urea coating machine can be seamlessly integrated with a full fertilizer granulation production line, including:
Common Granulators for Coating-Compatible Fertilizer:
| Granulator Type | Main Use |
| Rotary Drum Granulator | High-capacity NPK or urea-based fertilizers |
| Disc Granulator (Pan Granulator) | Ideal for uniform granule shape |
| Double Roller Granulator | Dry granulation for compacted urea mixtures |
| Flat Die Granulator | Suitable for organic and blended fertilizers |
| New Type Organic Fertilizer Granulator | For pure organic materials before coating |
Boost Your Fertilizer Quality with Our Coating Machine
Ready to produce slow-release coated urea granules with high precision and efficiency?
