Does the size of limestone affect the output of lime rotary kiln?
It is well known that limestone is the main raw material for the manufacture of cement, lime and calcium carbide, and is an indispensable flux limestone in the metallurgical industry. In particular, the activity of lime after calcining in a lime rotary kiln is as high as 400ml, which is widely used in the manufacture of paper, rubber, paint, coatings and other products. However, due to the complexity of the lime calcination process, a little carelessness will cause the output or quality of the lime rotary kiln to fail to meet the standard, which will affect the working efficiency of the whole machine.
Will the size of limestone affect the output of lime rotary kiln?
The working principle of lime rotary kiln is that limestone is heated to about 900°C by 1150°C kiln flue gas in the preheater, and about 30% of it is decomposed. It is pushed into the rotary kiln by hydraulic push rods, and the limestone is decomposed into CaO and CO2. The limestone generated after decomposition enters the cooler, and the cold air blown in the cooler is cooled to below 100°C and discharged. The heat exchanged 600°C hot air enters the kiln and mixes with coal gas for combustion. The exhaust gas is mixed with cold air into the bag filter through the induced draft fan, and then into the chimney through the exhaust fan. Among them, the size and quality of limestone have a great influence on the production capacity and quality of lime rotary kiln. Larger limestone is not easy to decompose and insufficient calcination may reduce production quality and output.
Therefore, the quality and lumpiness of the raw materials should be properly considered before calcination.
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