Rotary kiln is Henan Zhengzhou Mining Machinery Co.,ltd main product, we are the export base of rotary kiln machine.
We provide you good quality rotary kiln, good sales and after sales service, our machine has a good reputation in the market!Rotary kiln is a direct heating type with rotary shell, which fires material through heat exchanging by contacting hot air (high temperature gas) generated by the burner provided at one end of the shell directly with the material. The shell internal wall is lined with firebricks for the shell protection subject to respective conditions. Furthermore, heat-resisting bricks are used for the lining as needed. The flow directions of the material and hot air (high temperature gas) are countercurrent, in general. According to the applications, however, concurrent flow may be introduced or a hot air generation unit may be provided in addition. It is also possible to mix solid fuel in the material or to provide a self-combustion process in the kiln. Furthermore, perfect air sealing is provided at both ends of the kiln shell, which makes it possible to keep the kiln internal atmosphere acid, neutral, or reducible in accordance with the applications.