Roots blower can transport impurities in the cement industry. Therefore, when purchasing Roots blowers in cement plants, users must tell the blower manufacturers their own enterprise needs to select model parameters. Because there are many model parameters of Roots blowers, the models of Roots blowers used by each cement plant are different.
 
The wind pressure of Roots blower is not limited by the fan speed, and the wind pressure can remain unchanged no matter how the speed changes. The air volume is proportional to the fan speed.
Roots blower has a constant torque load, and its power saving rate is proportional to the speed drop, that is, N%=△ N%. Although it is different from ordinary fans and water pumps, its power saving rate is higher, and as long as the furnace wall is not damaged, it works continuously for 24 hours and has a long starting time. Therefore, there is great potential for power saving and high cost of power saving.
 
Pulverized coal at kiln head and kiln tail is transported by Roots blower, and pneumatic mixing in raw meal homogenization silo is conducted by Roots blower. It is mainly due to the inherent characteristics of Roots blower, such as constant air flow, no pressure in itself, full back pressure, and resistance of pipe network system.
After the technical transformation of Roots blower, the past production mode of adjusting the air pressure or air volume by adjusting the opening of the outlet (inlet) valve has been changed. The labor intensity has been reduced, which is timely, improves the product qualification rate, and significantly reduces the unit consumption.
The cement plant is also a big power consumer. In recent years, the project of applying frequency converters has been expanding day by day. It is mainly composed of Roots blower, disc feeder, feed water balling, screw conveyor, grinder, crusher, belt conveyor and exhaust fan of shaft kiln. After application, not only the electricity cost is saved, the product quality is improved, but also the flexibility in use is increased, and the adaptability to different technological requirements is stronger. Therefore, many shaft kiln cement plants have selected frequency converters to carry out technical transformation on the shaft kiln, especially the Roots blower, and have received very significant economic results, with the power saving rate of 30% - 50%. This has changed the past production method of adjusting the air pressure or air volume by adjusting the opening of the outlet (inlet) valve. The labor intensity is reduced and the adjustment is timely, The qualified rate of products is improved, and the unit consumption is significantly reduced.