Cooling machine is the main supporting equipment in rotary kiln production system which has simple structure, stable performance and reliable operation. The waste gas after heat exchange will be imported into rotary kiln so as to improve the thermal efficiency of the whole system. 

1) Rotary kiln is the Thermal Equipment, heating materials, in cement industry for calcining clinker.   2) It is also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, environmental protection, etc.  

Rotary dryer is a drying device, widely used in mining equipment. It can be divided into two categories, direct and indirect heat transfer drum dryers.