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 being calcined 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. The technical process of the rotary kiln is complicated, and if you are not careful, the output or quality of the lime rotary kiln will not meet the standard, which will affect the working efficiency of the whole machine. Does the size of the limestone block affect its yield? How can the efficiency of lime rotary kiln be greatly improved?
Will the size of limestone block affect the output of lime rotary kiln?
The working principle of the lime rotary kiln is that the limestone is heated by the 1150°C kiln flue gas to about 900°C in the preheater, about 30% decomposes, and is pushed into the rotary kiln by the hydraulic push rod, and the limestone is sintered and decomposed in the rotary kiln. For CaO and CO2. The limestone generated after decomposition enters the cooler, and is cooled to below 100°C by the blown cold air in the cooler. The 600°C hot air after heat exchange enters the kiln and mixes with gas for combustion. The exhaust gas is mixed with cold air and enters the bag filter through the induced draft fan, and then enters the chimney through the exhaust fan.
The technological process of the rotary kiln is very complicated. When the limestone is large in size, it will be difficult to decompose and insufficient calcination. It is possible to reduce production quality and yield. Generally speaking, the block size and quality of limestone have an impact on the production capacity and quality of lime rotary kiln, so the quality and block size of raw materials should be properly considered before calcination.
Tips for improving the efficiency of lime rotary kiln
As the lime rotary kiln works for a long time, the phenomenon of low efficiency becomes more and more serious. How can we increase our output in specific use? Three tricks to teach you!
1. The limestone shaft kiln should appropriately increase the amount of limestone and fuel in proportion. At the same time, the air volume of the lime kiln combustion-supporting air should be increased in a scientific proportion, so that the calcining environment inside the lime kiln can calcine the lime faster, so if possible, it can be appropriately Increase the height of the preheating zone, so that the material can be more fully heat transferred, and more limestone can be preheated into the calcining zone.
2. To increase the production of lime rotary kiln, more research can be done on the vertical preheater. Generally, the height of the preheating bin of the vertical preheater of the lime rotary kiln is increased, so that the limestone can absorb more heat. At the same time, this is also a The method to make the lime rotary kiln more energy-saving, at the same time, pay attention to the improvement of fuel and combustion-supporting air, so that the overall improvement can appropriately increase the output of the lime rotary kiln, but the improvement is very limited.
3. Strengthen the quality audit of raw material limestone and fuel standard anthracite produced by lime kiln, and try to achieve the quality standard, so as to avoid typical problems such as impurities hanging on the wall or kiln wall effect for increasing production.
The size of the limestone blocks will affect the output of the lime rotary kiln. In our daily work, we must better follow the principles of use, whether it is from installation, use, or after use, we need to do a good job of meticulous issues. The problem began to be picked up, so that the output of our lime rotary kiln equipment can be indirectly increased in use. Realize higher value.