The impact of cement powder separator on cement production
The production of a mill equipped with a cement classifier is called a closed circulation system. The function of the cement powder separator is to separate the fine powder ground to a certain particle size by the mill, separate out qualified products, and return the coarse powder to the mill for re-grinding. It can also prevent fine powder from adhering to the grinding body in the mill and create a buffering effect, improve the grinding efficiency of the mill, adjust the particle composition, and prevent uneven fine powder. Therefore, the cement powder selector can ensure the grinding quality and improve the grinding time of the mill. yield. Under the same conditions, better closed-circuit mill production can increase hourly output by 50% to 100% compared to open-circuit mill production.
The comprehensive performance of the cement powder separator depends on its powder selection efficiency and the percentage of 3~30um particles in the separated finished product. Because the particles in this section are the part that exerts the best strength of cement. The efficiency of powder selection directly affects the output of the mill. If the powder selection efficiency is too low, it will restrict the increase in mill output. If the powder selection efficiency is too high, 30~80um particles will account for a large proportion of the finished product, reducing the specific surface area of the cement and reducing the strength of the cement. Therefore, both low and high powder selection efficiency are not our ideal indicators.
Circulating load refers to the ratio of the amount of back grinding coarse powder to the amount of finished product. Since the mill (closed-circuit mill) equipped with a powder selector requires that the mixed powder coming out of the grinding tail can be either coarse or fine, it does not need to be all qualified before it can be discharged from the mill. Therefore, the powder that needs to be ground The amount of material increases, and the amount of material circulating in the mill is also larger. The raised ground reduces the buffering effect caused by the adhesion of fine powder to the grinding body in the mill, and the mill's output also increases.