Fertilizer Granulator: How to Turn Powder into "Nutrient Pearls"?

In fertilizer production, there's a magical machine that transforms loose powder into uniform granules—the fertilizer production machine. Like a skilled pastry chef, it kneads various nutrients into uniformly sized "pearls," making fertilizer easier to store, transport, and use. Let's uncover the mysteries of this process.
Granulation Principle: A Powder Transformation
The core principle of fertilizer granulation is to allow fine powders to agglomerate and form under the influence of mechanical forces and a small amount of liquid. Like a snowball, tiny particles collide and adhere within the rotating granulator, gradually growing to the ideal size of 2-4 mm. This process requires precise control of moisture content, binder dosage, and mechanical parameters to ensure granule strength and uniformity.
Mainstream granulation technologies:
Rotary drum granulator
This involves a giant rotating drum, slowly agglomerating the raw materials. Suitable for large-scale production, it produces rounded granules with low density. While energy consumption is relatively high, maintenance is simple.
Double roller press granulator
Double roller press granulator uses high pressure to force wet powder through die holes to form the granules. The resulting granules are dense and strong, making them suitable for high-concentration compound fertilizers.
From factory to farmland, the value chain. High-quality fertilizer granules significantly improve the entire agricultural value chain: farmers can more precisely control fertilizer application, reducing waste; granular fertilizers are more evenly distributed in the soil, improving nutrient utilization; and mechanized fertilization equipment operates more smoothly. From humble powder to refined granules, fertilizer granulators complete the final mile of agricultural production. These tiny "nutritional pearls," in their standardized form, are making a significant contribution to global food security.