Material in the rotary kiln is changing according to certain rules, from the slurry or powder into the kiln to the firing of clinker, after preheating and drying, decomposition, burning and other processes. To ensure that the material has good drying, preheating, decomposition conditions, warranties calcination normal, thermal stability, high yield, proved wet kiln kiln temperature fluctuation range should be ± 5 ℃, dry kiln temperature fluctuation range In order to achieve 10 ~ 15 ℃, because the material changes fast, slow, and the reaction well, bad, and there is a direct relationship between high and low temperature, and high and low temperature kiln, these changes and inseparable. When the tail temperature instability, while preheating the material will be good, while preheating poor, satin burn it difficult to control. When the reaction is complete burn of an expected firing zone, the material layer is thinning, you need fewer calories. In order to stabilize the firing temperature, inevitably a lot less coal; when the reaction is not completely burn an expected firing zone, the material layer thickens, need more calories, certainly difficult to burn, it will inevitably raise the temperature calcination mandatory even need playing slow, undermining the thermal system, kiln speed instability, running low, a direct impact on the quality of the cement production. To ensure thermal stability of the system, normally calcination, the material evenly warm the reaction was complete, to achieve the purpose of high-yield, kiln temperature fluctuations must be controlled within a certain range, the smaller the better. Please indicate Henan YuFeng Heavy Machinery