Non-drying granular fertilizers include urea, ammonium phosphate, compound fertilizer, potash fertilizer granules, and more. Fertilizer granulation represents one of the key development trends in modern fertilizer production. Compared with powdered fertilizers, granular fertilizers offer superior physical properties including:

• Dust-free operation
• Long-term storage without agglomeration
• Excellent flow characteristics
• Easy spreading application
• Suitable for aerial application by plane
• Slow-release properties for improved fertilizer utilization

Granular fertilizer processing granulators are primarily used for compound fertilizer production. The three main non-drying granulation methods each have distinct characteristics. Tianci recommends the twin-roll extrusion granulator for optimal performance.

This method requires adding binders to the powder, followed by drying and sieving processes. The addition of binders (typically clay) and water introduces ineffective ingredients that reduce the final product's nutrient content.

Involves dissolving powder in water, followed by cooling, crystallization, separation, crushing, and sieving. This complex process results in high operational costs, significant energy consumption, and reduced market competitiveness.

Utilizes tablet presses or extrusion granulators to forcibly compress powdered potassium fertilizer into tablets, which are then processed into granules through slicing, granulating, and sieving. Two main types include roller type and wheel roller type extrusion systems.

The roller extrusion granulator employs rolling molding and crushing processes to form granules. This extrusion granulation production method accommodates a wide range of raw materials, with over 20 different materials successfully processed including:

• Ammonium nitrate
• Urea
• Ammonium chloride
• Calcium nitrate
• Potassium chloride
• Potassium sulfate

The extrusion granulation process enables rapid product formula changes, allowing a single equipment setup to produce over 30 different product formulations with minimal downtime.