Rotary kiln burning zone and lower ends of the temperature causes and improvement measures
Rotary kiln burning zone and the temperature level at both ends is very important, both ends of the low temperature specific performance: flame length and the temperature is low, "kiln skin" and the material temperature lower than normal, the kiln is dark red, exhaust gas temperature low. Raw material of the "shadow" approach to the kiln, the material is more resistant to burning. Clinker is brought up the height of the lower clinker fine particles and divergence, there are some stirring up dust, making kiln turbid. Clinker loose surface dull, low weight liters of free calcium oxide high. Wet process kiln with a chain of low-temperature materials, water big. Kiln can not fast-forward speed, yield and quality are reduced. This is the rotary kiln burning zone and low temperature performance at both ends. The reason for this phenomenon appeared: feeding uneven feeding suddenly soared, so that the material burn worse, firing with thermal overload. As kiln leakage and other reasons, the exhaust is too small, not enough air. Or less prolonged stoker coal has changed, such as the large amount of ash, crude fineness were unable to grasp these changes and take appropriate measures. Raw ingredients have changed, improved calcium oxide and silicon dioxide or water slurry and large, failed to grasp and take action. For causing rotary kiln and kiln with high and low ends of the temperature and causes of the phenomenon, we must take the appropriate measures, first in the firing temperature is not too low in the case, may be appropriate to increase the amount of feed coal, increasing one, two secondary air flow, strengthen the oxy-acetylene mixture fed to the kiln moves the position of the coal pipe, focusing on improving the firing temperature, fever, "shadow", until the ends of the temperature to normal, normal operation resumes. Another one in the firing temperature is too slow to be taken kiln heating method, the first slow kiln speed, while increasing kiln temperature, when the temperature has stabilized live, raw materials, "shadow" to continue to move forward when the kiln speed also To continue to reduce until: "shadow" stabilize so far. The above article by Henan YuFeng Heavy Machinery (http://www.yufchina.com) finishing release, reproduced, please indicate the source!