Drum granulator is a kind of molding machine that can make material into a specific shape.Is one of the key equipment of compound fertilizer equipment industry, suitable for cold, hot granulation and high, medium and low concentration compound fertilizer mass production. The main working mode is the wet granulation of aggregates. Through a certain amount of water or steam, the basic fertilizer is fully chemically reacted after humidification in the cylinder. Under a certain liquid phase condition, with the help of the rotating movement of the cylinder, the extrusion pressure between the material particles is formed into a ball. The cylinder adopts special rubber plate lining or stainless steel lining, which realizes automatic scar removal and eliminates the traditional scraper device.