Rotary cooling machine is used for compound fertilizer production, cooling a certain temperature particles of fertilizer, rotary cooling machine and dryer used together, can greatly improve the cooling speed, reduce labor intensity, increase output, further remove part of the water and reduce the grain temperature of compound fertilizer. Rotary cooling machine adopts the reverse working mode of air flow and material flow, the material enters from the top of the machine, passes through the heating and drying section and the cooling section from the bottom, and the cold air enters from the bottom to cool the material to be discharged first, and then is heated and exchanges heat with the material, absorbing the water in the material through the material layer from the top outlet. Therefore, the machine meets the cooling of the material at the same time, strengthening the heating and drying process of the material, which is not available in the vertical cooler and counter-current cooler currently used.

Single-barrel cooling machine 

It is one of the important equipment in the rotary kiln system. The clinker (1000-1200 ° C) from the rotary kiln drives the material and air to fully exchange heat through the cylinder rotation, so that the material is cooled to (200 ° C below), and at the same time improves the quality and easy grinding of the clinker. All the air after cooling the material is put into the kiln as the secondary circulation air. The thermal efficiency of the kiln is improved.