Construction and Function of Lime Vertical Kiln

Kiln is made of kiln lining for the lime of the space, from top to bottom are divided into preheating zone, roasting belt and cooling zone. The cross-sectional shape of the kiln has a tense effect on the movement of the material in the kiln and the distribution of the air in the kiln, so that the material in the kiln is uniformly sinking and descended and the airflow can be evenly distributed along the cross- Size prerequisites. The distribution of airflow in the cross section of various profiles is shown in Figure 8-1. Lime kiln

According to its cross-sectional shape, the kiln can be divided into two kinds of circular and rectangular, mechanized coke shaft kiln usually use circular cross-section. According to its longitudinal section shape, the kiln can be divided into three kinds: straight tube, roasted with shrinkage and discharge end shrinkage. Lime kiln

Straight cylindrical kiln is currently the most commonly used in a cross-sectional shape, the shape of the kiln bore diameter up and down the same, it is the advantage of simple and stable structure, is conducive to uniform material subsidence and antegrade, does not lead to strengthen the "kiln wall effect ", And masonry convenience, with a smaller kiln capacity of the product, less heat loss, and kiln kiln kiln lining refractory consumption less. Lime kiln

Roasting belt is the shape of the kiln from the preheating to the roasting belt height of 3-5m within the scope of the kiln gradually shrink the shape of the inner mouth of the mouth is usually smaller than the mouth to reduce 0.2 ~ 0.3m. The starting point for reducing the inner diameter is that the surrounding material can be turned to the middle during the sinking process, thereby improving the firing conditions of the surrounding material. The shape of the kiln is flawed in the kiln when the diameter is too small often prone to shrink at the mouth of the phenomenon. Lime kiln

The application of the shrink-shaped kiln in the lime shaft kiln is also common, the shape of the kiln in the discharge end of the set of rounded-shaped necking is to reduce the size of the feeder, and thus generally used for larger mechanized shaft kiln The If the kiln is used at the end of the wind, set the necking will help to weaken the "kiln wall effect"; but the shrinkage of the surrounding material sinking and certainly hinder the role. Therefore, shrinkage should be smooth transition and with the middle hood with the use. Lime kiln