What is the Effect of Improper Burner Position on Rotary Kiln Calcination?
What is the Effect of Improper Burner Position on Rotary Kiln Calcination?
The harmful effects of the position of the abnormal burner on the calcination of the rotary kiln are as follows:
① The burner position is too high, the flame is long, the burning is far away, the kiln skin is easy to burn, and the operation is difficult to control. In addition, due to the high temperature of the coal pipe, the material can not be burned, often when the incoming material is small, the material can not be burned. Once the incoming material is large, the dark shadow can easily rush over the fire point, causing a big slow train. It is not easy to raise the temperature after the slow train. Once it is burned, it is easy to overburn. The front temperature is just right, and the rear is overburned. It is forced to open the kiln air quickly, greatly reducing coal, unstable thermal system, passive operation, and affecting the production and quality.
② The burner position is too low, and it can burn when the material is too small. Once the material is too large, the flame goes down and direct contact with the material, the pulverized coal is rolled in the material, and incomplete combustion occurs. The surface of the material layer emits blue fire, the fire point is muddy, and the yellow core material is too much, which affects the color of the cement. At the same time, the burning is close, the flame is short, and the local high temperature is easy to form, which makes the front block rise, and the rear shadow follows closely. When the car is slow, the material will rush from one side as soon as it is driven fast, forming the raw and cooked sandwich material with high CaO content, which seriously affects the quality of cement.
③ When the burner is outdoors, the flame is generally coarse and unstable, the fire point moves forward, the dark shadow is close, the operation is difficult to control, and it is easy to slow down, and it is easy to burn the front kiln skin.
④ The burner is fed too much, the flame expansion force is poor at the beginning, the material layer is thickened without topping, the kiln is muddy, it is difficult to observe, and it is inconvenient to operate and control; When the flame is extended, it is easy to burn the rear kiln skin.