01. Frontier Overview
If low cement castable is used in sedimentation chamber, steel fiber is generally not needed.
02. No steel fiber is needed in castable
If the lower opening of the cone section of the sedimentation chamber is too small and needs to be patted during use, only steel fiber needs to be added to the low cement castable used in the cone section to increase the pulling, wear resistance and erosion resistance. However, if the discharge opening of the sedimentation chamber is reasonable, and the size of the sedimentation chamber and the rotary kiln are also reasonable, steel fiber does not need to be added to the castable.
The temperature of the sedimentation chamber is not high, and it mainly plays a dust removal role. The dust has fallen to the bottom before the flue gas flows out of the sedimentation chamber, and is collected by the ash hopper at the bottom of the sedimentation chamber. The dust that has not settled is taken out with the flue gas. Using general low cement castables can meet the use.
03. High-aluminum bricks and low-cement castables are generally used. In general, high-aluminum castables and low-cement castables are more common, but clay bricks are also used as the lining of the sedimentation chamber. High-aluminum castables are also used to add a certain proportion of high-voltage electric porcelain to make the castable glaze to facilitate the landing of smoke and dust.
04. Description of adding steel fiber to low-cement castables. There are not many cases of adding steel fiber to low-cement castables for use in sedimentation chambers. In recent years, the sedimentation chambers of some lime rotary kilns and zinc volatilization kilns are mostly lined with clay bricks. However, the size design of some sedimentation chambers is not reasonable. When the sedimentation chamber is too small and the discharge port of the cone section is also small, the smoke and dust will be slapped during the production process. This will accelerate the service life of the clay bricks or low-cement castables lined in the cone section.
05. Conclusion Therefore, under special circumstances, a reasonable proportion of steel fiber is added to the low-cement castable to increase the wear resistance of the cone section and increase its service life.
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