What are the granulation methods for NPK fertilizer granulator machines?
NPK compound fertilizers, due to their diverse formulas and balanced nutrients, have become a core fertilizer in agricultural production. The granulation method directly determines the uniformity, strength, and nutrient retention rate of the fertilizer particles. Currently, there are three mainstream granulation methods for NPK fertilizer granulator machines on the market, suitable for different production scales, raw material characteristics, and finished product requirements. Choosing the right method can significantly improve production efficiency and reduce operating costs. Extrusion granulation is the preferred method for small and medium-sized NPK fertilizer plants and farmers. This method does not require the addition of large amounts of binders. It relies on the high-pressure extrusion between the granulator rollers and the granulation chamber to compress the NPK mixture into granules. The process is simple, energy-efficient, and maximizes nutrient retention. It is suitable fo...