Nitrogen, phosphorus and potassium compound fertilizer, referred to as NPK Compound Fertilizer, as a key nutrient recharge station in agricultural production, its importance is self-evident. This set of nitrogen (N), phosphorus (P), potassium (K) in one of the chemical fertilizer, through modern scientific and technological means to accurately match, to meet the diversified needs of plant growth. When it comes to the production and processing of fertilizer, it is necessary to mention the efficient and accurate fertilizer granulator, which plays a crucial role in the fertilizer production line.