With kiln calciner, because more than 85% of the raw materials in the kiln decomposition of calcium carbonate, rotary kiln operation more stable, but because of complex process of change factors, the lack of automatic control devices, operating level and the judgment is limited, so sometimes inevitably will occur some abnormal phenomena, which are about four o'clock, I will give you sub-analysis, today said first one, and today this phenomenon summarized as: high temperature before the tail temperature is low. This phenomenon indicates that the rotary kiln thermal system in the beginning stages relatively normal operation has changed due to some factors, such as: decomposing furnace temperature is low, resulting in a sudden drop in the decomposition rate of the kiln, a sudden increase in the volume of feed preheater tread material, raw material does not decompose, direct short kiln, the material composition changes, a sudden increase in calcium carbonate raw material, kiln burning fire force, the shadows too close to the firing zone is too short, the material does not burn fully,,,, ,, et al. In these cases, we must first find out the main causes and adjust the wind oil, elongated flame, strengthening burn. Current quantity is large, should be appropriately reduced material and notify calciner avoid because less material, causing the preheater system temperature increased. The above article by Henan YuFeng Heavy Machinery finishing release, reproduced, please indicate the source!