Most of the burners of the rotary kiln pass through the kiln head cover, extend into the kiln head cylinder, and heat the material to the required temperature through flame and radiation. Rotary kiln Burners have various forms such as coal injection pipes, oil spray guns, gas nozzles, etc., depending on the type of combustion. When the reaction temperature is low, a combustion chamber is set beside the kiln head cover to pass hot flue gas into the kiln to supply heat！
The multi-channel burner has the following functions;
1. Increase the mixing of pulverized coal and combustion air, increase the burning rate, and the fuel will burn completely and stably.
2. Increase the means of adjusting the air volume and speed of each channel to make the flame shape and temperature adjustment flexible and convenient, suitable for clinker calcination.
3. The burner has a long service life.
4. Protect the kiln lining material and prolong the service life of the lining.
5. Stabilize clinker quality and increase system output.
6. Simple structure, convenient maintenance and replacement, reducing the operating time of the system due to burner failure.
7. Minimize the amount of primary air, increase the use of high-temperature secondary air, and increase the utilization rate of the heat recovered by the clinker.
8. The system resistance is as low as possible to reduce the power consumption of the primary fan.
9. It can reduce the emission of harmful substances (especially NOx).
10. Low-grade fuel can be used to strengthen the comprehensive utilization of fuel, and lower equipment prices and maintenance costs.