Function of Cement Separator in Cement Grinding System
Date:2021-06-25 14:26:33
Author:admin
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1050
Cement separator, also known as cement mill separator, cement classifier, is widely applied to the coal mill in cement plant, raw mill, and cement milling system.
The closed-circuit grinding system is one of the most commonly used production processes in the cement industry. Its purpose is to increase the productivity of the grinding system, reduce production energy consumption, and increase the output per hour. Based on the theory of winnowing, the powder is thoroughly classified in the suspended state. It is the latest generation of high-efficiency powder separation equipment, which can be applied to the cement and raw material grinding system in the cement industry, the ultra-fine slag grinding system, and It can be used in chemical, metallurgical and other industrial sectors.
The classifier is an important component of the closed-circuit grinding system. Therefore, the function of the classifier must be matched with the grinding function of the mill, and it should be subject to the needs of the grinding efficiency of the mill. Therefore, familiar with the structure, working principle and advantages of the powder separator, and then use the powder separator correctly, also enables the closed-circuit operation of the mill to achieve high-quality, high-yield, low-consumption and long-term safe operation of the equipment
Working principle of cement separator
The material enters from the feed pipe and is scattered into the rising airflow through the dispersion plate. The pulverized medium debris in the material overcomes the falling resistance of the rising airflow under the action of gravity and is discharged through the slag discharge outlet. The airflow carrying the powder rises to the grading section and enters the rotor through the guide vanes for grading. The guide vane can make the flow and powder particles rotate, pre-grade, and capture the coarse particles thrown out by the rotor, and also make the speed of the flow evenly distributed on the height of the whole rotor. The coarse particles trapped by the guide vane fall on the cone of coarse powder and are discharged by the outlet of the coarse powder, while the fine particles and airflow enter the middle of the rotor through the rotor blade and are sent to the collection device by the outlet of the fine powder.
Advantages of cement separator
1、High efficiency of powder selection, which is 10 percent higher than that of the third generation of powder separator, can reach more than 80%.
2、Increase production and save energy. Compared with an open-circuit cement mill, the output of the cement mill is increased by 40 ~ 100%. Compared with centrifugal type and cyclone type closed-circuit mill, the output can be increased by 15 ~ 40%. The power consumption of the grinding system is reduced by 10 ~ 20%.
3、Improve product quality, and improve particle distribution of finished products. It is beneficial to increase the content of 3 ~ 30 m particles in cement, thus improving the strength of cement. Reduce the content of more than 200 m particles in raw meal and improve the flammability.
4、Wide range of product fineness, control is simple, change fineness does not need to stop the machine, only changing the speed of the separator can produce different fineness of the product with a specific area of 300 ~ 600m2/kg.
5、Long service life of the separator. Adopt a variety of wear – resistant measures, save maintenance cost, easy maintenance.
6、The equipment is small in size, light in weight, and flexible in layout. The system adopts full negative pressure operation, and the operating environment is friendly. A large amount of cold air can be used as powder gas, and the temperature of cement products is low.
Therefore, to improve the ability of cement classifier is conducive to the full play of the grinding ability of the cement mill. For a cement manufacturing plant, it is necessary to ensure the balance between grinding capacity and powder selecting capacity. To realize the matching of powder selection ability with the grinding ability of the cement mill, under normal circumstances, the powder selection ability of the equipped cement classifier is greater than the grinding ability of the cement mill.
