I. Function of Cement Kiln Burner: It sends pulverized coal (natural gas or oil fuel) and the air required for combustion into the furnace, and combines it with a reasonable airflow structure so that the fuel can ignite quickly and burn stably. The rapid and thorough mixing of coal and primary and secondary air allows for rapid heating, ignition, and burnout. When the coal wind reaches a certain characteristic requirement, the shape of the flame is determined by the inner wind, and the length is determined by the outer wind.

The burner body (nozzle and outer tube casting part, which extends into the rotary kiln furnace) will be subjected to high-temperature radiation above 1400℃, as well as erosion and corrosion from dust, and chemical corrosion from alkali sulfide compounds contained in high-temperature flue gas. Therefore, the burner must be high-temperature resistant, high-temperature wear-resistant, heat-shock resistant, chemically stable, and resistant to alkali sulfide corrosion.

II. Characteristics of Cement Kiln Burner Flame:

1. The flame shape is regular and complete, the flame is stable, and there is no kiln lining sweeping phenomenon, which can extend the service life of the cement kiln lining.
2. Because a high-pressure Roots blower is used to replace the traditional low-pressure centrifugal blower as the combustion-supporting air, the gaseous fuel and primary and secondary air are well mixed, and the combustion is complete, so the thermal intensity of the cement kiln can be improved, and the proportion of primary air can be reduced, thereby increasing the kiln's output and reducing heat consumption.
3. The bowl-shaped effect formed by the flame hood and the flame—the initial lack of strong vortices avoids temperature peaks, making the flame temperature distribution uniform and reasonable, which can effectively protect the kiln mouth cylinder and guard plate.
4. Reduce the CO and NOx content in the waste gas, which is beneficial to the safe operation and environmental protection of electrostatic precipitators.
5. Convenient online adjustment. The outlet cross-sectional area of each air duct can be adjusted during operation to change the ejection speed of each air duct, achieving the purpose of adjusting the shape and intensity of the flame.
6. Nozzle material, high-temperature resistant and easy to replace.
7. High-energy igniter device, which uses a 10,000-volt high-voltage pulse emitted by an ignition transformer for automatic ignition. The ignition rod is high-temperature resistant and can ensure safe use for 20,000 times, with a high ignition success rate.

III Types of fuel used by cement kiln burners: Pulverized coal fuel is mostly used, and natural gas or diesel fuel is used abroad, depending on the actual situation.

For overseas market users, Zhengzhou Zhongwei Environmental Protection Equipment Co., Ltd. undertakes cement kiln EPC general contracting projects, responsible for: rotary kiln burner combustion control system 、 Kiln body refractory materials 、 Fuel oil and pulverized coal pipeline construction services.