Drum granulation, as an efficient and environmentally friendly granulation process, demonstrates significant advantages in fertilizer production, particularly in the following aspects:

1. Particle Quality Advantages

• Uniform Particles with Smooth Surfaces
  Through slow rotation of the drum, raw material particles collide and bind during rolling, forming spherical or near-spherical granules. The three-stage growth process (nucleation, particle growth, and granule formation) ensures uniform particle size and smooth surfaces, enhancing product appearance and flowability.

• High Particle Strength
  Post-drying, particles form a solid bridge structure, offering superior hardness and resistance to caking. Compared to other methods (e.g., disc granulation), drum-granulated particles exhibit higher strength, minimizing breakage during transportation and storage.

• Precise Control Over Liquid Addition
  Optimizing liquid (water or granulation promoters) addition prevents slurry liquefaction or insufficient binding, ensuring quality. For example, in high-solid products (e.g., 64% diammonium phosphate, DAP), controlling liquid crosslinking during spray granulation significantly enhances particle strength.

2. Production Efficiency and Cost Benefits

• High Production Capacity
  Drum granulators achieve high throughput, with large-scale units reaching dozens of tons per hour. Automation via non-contact microwave moisture meters and DCS systems reduces manual intervention, boosting efficiency.

• Energy-Efficient Design
  The process minimizes energy waste by optimizing material flow and energy utilization. Technical upgrades can eliminate drying steps, further reducing energy consumption and dust emissions.

• Cost-Effectiveness
  By improving first-pass granulation rates and reducing recycle ratios, production costs are lowered. For instance, a enterprise producing high-quality compound fertilizer via this technology achieved颗粒强度 and nutrient content compliant with national standards, enhancing market competitiveness and global sales.

3. Environmental and Emission Benefits

• Strict Compliance with Environmental Standards
  Emissions meet stringent standards like DB37/2376-2019 for particulate matter, SO₂, and NOx. Water scrubbers recycle absorption liquid for farmland use, achieving waste resourceization.

• Low Noise and Solid Waste Management
  Noise levels adhere to GB12348-2008, while solid waste handling follows GB18599-2001, ensuring eco-friendly operations.

• Resource Conservation
  Precise liquid control and process optimization minimize raw material waste and energy use. Technologies like curtain coating integrated with drum granulation enable efficient, water-saving production.

4. Adaptability and Flexibility

• Versatility Across Fertilizer Types
  Suitable for producing MAP, potassium sulfate magnesium, granular urea, and others. Adjusting parameters (drum speed, inclination, liquid addition) allows customization of particle size and nutrient ratios to meet market demands.

• Technological Innovation Potential
  Recent advancements, such as non-contact microwave moisture meters and optimized granulation algorithms, enhance automation and product quality. Innovations like curtain coating-drum granulation integration further elevate efficiency.

In summary, fertilizer drum granulation excels in particle quality, efficiency, environmental performance, adaptability, and innovation, making it a preferred choice for efficient, eco-friendly fertilizer production.