The drum fertilizer cooler is a reliable piece of equipment designed for stable operation and precise material cooling; within a fertilizer production line, it cools high-temperature granules discharged from the dryer to an optimal temperature. Both the airflow rate and the drum rotation speed are adjustable, allowing operators to set parameters based on feed temperature and production requirements. The cooling process is continuous and automated, operating in tandem with the dryer and requiring minimal manual intervention. Routine operation involves monitoring discharge temperatures, checking equipment status, and adjusting airflow—tasks that are easily mastered by workers.

High-temperature granular material is fed directly from the dryer’s discharge end into the cooler’s inlet and enters the rotating drum. Lifting flights (lifters) on the inner drum wall lift and scatter the material, creating a “curtain” of granules. Ambient air is drawn into the drum by a fan, facilitating thorough heat exchange with the material. Heat transfers from the granules to the air, causing the material temperature to drop gradually. Driven by the drum’s inclination and rotation, the material moves toward the discharge end; once cooled, it is continuously discharged for screening or packaging.