Vertical roller mill is a kind of equipment that is used for grinding raw cement, cement clinker, slags and coal powder. The grinding machine has the characteristics of simple structure, low cost of manufacture and use. It includes the frame body, mill device and transmission device. Due to the drive device doesn't support the weight of the mill and the grinding pressure high axial load, so common decelerator gear can be used, which possesses the advantages of compact structure configuration, reliable operation, can shorten the grinding time, reduce the use of equipment and maintenance costs.
Vertical mill is the grinding equipment for mass material processing with large roller system. Compared to the common grinding mill equipment, its superior is becoming larger and automation of the operation. Vertical roller mill machines can be used for grinding all kinds of materials with certain hardness.
Vertical mill is widely used in cement, electric power, metallurgy, chemical industry, the gold ore, etc. It sets the crushing, drying, grinding, sorting conveyor at an organic whole. It has the characteristics of high production efficiency. Massive, granular and powdered materials can be ground into a powder material will be required.
The operation of vertical roller mill is as the follow. Motor through rotational speed reducer drive a millstone, material is sent from central feed opening brought a millstone. Under the action of centrifugal force, the material is ground by the mobile rollers on the edge of the mill rolling. After crushing, material is sent out from mill edge overflow. At the same time, materials are sent from the nozzle ring with the high speed up stream to one efficient classifier of vertical mill. Coarse powder is returned to the mill wheel through separator and is ground again; Fine powder is flied off with airflow grinding, collect down in the system of the dust collecting device. Stream is not bring up the coarse particle materials and accidental into metal sinks down from the wind ring, by scraping board, by the outer loop inside the bucket machine feeding grinding of grinding again.
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