Fertilizer Wet Granulation: Scientifically Transforming Powder into Efficient Granules
Wet granulation is a critical shaping technology in fertilizer production, converting fine powder raw materials into uniform, stable granules through liquid binders. This process not only enhances the physical properties of fertilizers but also maximizes their effectiveness in storage, transportation, and application. For global agriculture, uniform granular fertilizers mean more precise fertilization and higher resource utilization efficiency. Raw Material Pretreatment: Ensuring Quality Foundation Wet granulation begins with meticulous preparation of raw materials. Commonly used fine powder materials in fertilizer production, such as urea and phosphates, are first screened and weighed. Lumps and impurities are removed using vibrating screens or air-jet sieves to ensure purity. Controlling initial moisture content is crucial—typically maintained below 5%—to prevent caking issues in subsequent processes and establish a stable foundation for the entire granulation. For certain moisture-sensitive materials, small amounts of anti-caking agents, such as talc, may be added to further improve handling properties.
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