vertical roller mill correct grinding operation process


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xiaomo lin


156 9874 2356
From the point of view of energy saving, the material of the different materials can be used separately and then mixed, and the cement has become the development direction of grinding technology. In order to make full use of waste slag resource, and improve the environment, in this paper, the vertical roller mill operation and maintenance experience are introduced.

Because of its high yield and high efficiency grinding energy saving advantages, has been widely used in grinding processing materials below 7 grade kaolin, barite, fluorite, talc, slag, ash, gypsum, limestone, marble, phosphate, potash feldspar, quartz sand, bentonite, manganese and other Mohs hardness. How to correct the opposite vertical roller mill operation , the process of any specification, we summed up the correct grinding operation process.

Maintain the stable bed, which is the foundation of the roller type abrasive bed grinding, the key to the normal operation. The material layer thickness can be adjusted by adjusting the height of the retaining ring, and the ring is the key part of the vertical mill. Its function is to maintain a certain grinding material layer, and the wear degree of the retaining ring influences the stability of the mill. The appropriate thickness and the corresponding relationship between them and the mill output, the control operator should grasp in the operation process of the usual crystal clear.

The material layer is too thick, the grinding efficiency is reduced, the material layer is too thin to cause vibration. If the roll increased, fine powder is produced, the material layer becomes thinner; rolling reduction, disc material is thicker, the corresponding return material, the material layer thickness. The internal air velocity is improved, the internal circulation is increased, the material layer is thick and the wind speed is reduced, and the inner loop is reduced. In the continuous production practice we conclude that the thickness of the material bed is appropriate for the 50 ~ 60mm.

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vertical roller mill


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