The drum granulator, also known as the turning drum granulator, is one of the main equipment for producing organic fertilizer, compound fertilizer, and mixed fertilizer, suitable for large-scale production of both cold and hot granulation as well as high, medium, and low concentration mixed fertilizers. The drum granulator has a high granulation rate and its internal structure can be customized with special materials based on the actual properties of the material, achieving features like corrosion resistance, wear resistance, low energy consumption, and long service life. It is not only used in the granulation process of fertilizers but is also widely applied in the chemical industry.