The rotary cooler has been an essential and indispensable part in the whole fertilizer processing. It consists of drum body, spiral plate, lifting board, hopper,cyclone dust catcher and cooling pipe system. The rotary cooler machine can combine with the rotary drum dryer to remove the dust and clean the exhaust together, which can improve the cooling efficiency and the rate of thermal energy utilization, reduce labor intensity, and further remove moisture of the fertilizer. Generally, the inlet temperature of materials is 60°-80°, while the outlet temperature is less than 30°. Besides, the fertilizer cooling machine manufactured by us can also be used to cool other powder and granules materials.

In the natural situation, the slope of Cooler cylinder is 3.5% to 5%, keeping low-speed rotation. The material is feeding from end of Cylinder (high side), circular lifting plate keeping the materials scatter lifting and moving down. Cooling material is discharged from the low end, and preheated air is sending into the rotary kiln for calcinations.