The center of the burner is generally slightly inclined to the center of the kiln mouth section. If the flame is too close to the surface of the material, part of the unburned fuel will be wrapped in the material layer, technetium will not fully burn, increase the heat consumption, and simply long the pulverized coal circle at the kiln mouth. If the flame is too far from the surface of the material and deviates from the kiln lining, the flame jet will collide with the kiln skin, wash and burn the kiln skin and kiln lining. In severe cases, it will cause frequent skin, ring, egg and other phenomena.
The burner orientation is too low, the flame is not smooth, and it is easy to burn the kiln skin and refractory materials, resulting in rapid burning and incomplete combustion, high yellow core material and f-ca0, aggravating the reduction atmosphere, and blocking the skin of the kiln tail system. The burner orientation is too upward, and the fire burns far away, that is, the burner is far from the material layer and close to the kiln lining.
The flame will scour the kiln skin and lining, reduce the service life of the kiln lining, and it is easy to form long and thick kiln skin. The flue gas chamber at the kiln tail and the final blanking chute are easy to form skin blockage, which will form the backward movement of the kiln high temperature zone, which is easy to make the materials sticky. When the fullness ratio of raw meal into the kiln is low and the coal ash is large, the impact is exacerbated.
Adjustment of internal and external air: generally, when the internal air is increased, the flame is short and thick. The flame is thin and long when the external wind is increased. If the internal air is too large, it is easy to form short and coarse divergence. Not only the kiln skin is easy to be burned, but also coarse grains and yellow core materials. The external air is too large and the flame core area is elongated, which is easy to cause the unburned coke particles to settle in the rear section of the kiln for continuous combustion, so that the materials show liquid phase prem
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