What preparatory work is needed before NPK fertilizer production?
NPK fertilizer, an indispensable compound fertilizer in agricultural production, has a production quality that directly impacts crop growth and farm yield. Preparatory work before production is the first line of defense in ensuring product quality. This requires a comprehensive approach covering raw materials, equipment, technology, and compliance, safeguarding the smooth progress of the subsequent NPK fertilizer production process . Raw material selection and verification are core aspects of production preparation. The core nutrients of NPK fertilizer come from three basic raw materials: nitrogen, phosphorus, and potassium. Before production, the purity and content of these raw materials must be strictly controlled: nitrogen fertilizers should prioritize urea and ammonium chloride with qualified purity to avoid impurities affecting fertilizer efficiency; phosphorus fertilizers require testing the effective content of phosphorus pentoxide, eliminating caked or damp inferior phosph...