How are NPK fertilizers produced?
NPK fertilizers, the "nutritional cornerstone" of agricultural production, are produced through an industrial process that scientifically combines three core elements: nitrogen, phosphorus, and potassium. From natural raw materials to standardized finished products, the NPK fertilizer production process involves multiple precise steps to ensure balanced nutrients and stable fertilizer efficacy. Raw material pretreatment is the foundation of production. Nitrogen sources typically use urea or ammonium nitrate, phosphorus sources come from monoammonium phosphate and diammonium phosphate processed from acid-digested phosphate rock, and potassium sources are derived from potassium salts such as potassium chloride or potassium sulfate. These raw materials are first stored in dedicated silos. Agglomerated materials are crushed by a crusher, and then screened through a vibrating screen to obtain uniform particles.Simultaneously, magnetic separation equipment removes metal impurities...