What is the process of wet granulation?
Wet granulation is a key process in fertilizer production, transforming fine powders into uniform, stable pellets. This method not only improves the physical properties of fertilizers but also enhances their efficiency in storage, transportation, and application. For global agriculture, uniform granular fertilizers mean more precise fertilization and higher crop yields. Below, we explore step-by-step the specific workflow of wet granulation in fertilizer manufacturing. Raw Material Pretreatment: Laying the Foundation It all starts with preparing the raw materials. Common fine powder materials in fertilizer production, such as urea, phosphates, or potash salts, are first screened and weighed. Using vibrating screens or air-jet sieves, lumps and impurities are removed to ensure purity. Controlling initial moisture content is crucial—typically kept below 5% to prevent caking or degradation in subsequent steps. This stage sets a stable foundation for the entire granulation process.
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