Vertical Grinding Mill for Cement Plant

In recent years, due to the advantages of energy saving, the vertical roller mill generated by the comprehensive benefits in the cement industry, and more and more obvious have also been widely used and promoted in the power, metallurgy, chemical, non-metallic and other industries. Vertical roller mill mainly grinds raw materials, clinker, granulated blast furnace slag, iron ore, limestone, coal, coke, coal gangue, fly ash, ash, gypsum, calcite, pyrophyllite, quartz, clay, sand stone, bauxite, silica fume, calcined rice husk and other metal and non-metallic mineral processing industry.
There are a lot of grinding mill equipment, vertical mill is more widely used in recent years, especially in the preparation of a large proportion of pulverized coal of the large-scale boiler.
Vertical mill works: the material through the tube down to the middle of the grinding disc, constant speed rotating disc by means of the role of centrifugal force to the outside evenly dispersed material, paving, to form a certain thickness of the material bed, at the same time the material influenced by a plurality of rollers on the disc, and crushed. When the material leaves the grinding disc encounters the hot gas that enters the mill through the air ring and rises along with it, the material enters the separator through the central shell of the mill. During this process, the material is moved to the outer edge of the disc by the continuous driving of the centrifugal force. In the material and the hot gas for a full heat exchange, moisture quickly evaporate. The classifier is controlled by the roller mill, and the particles larger than the specified size are separated and returned to the grinding disc. The material meeting the fineness requirements enters the dust collector through the classifier, and the finished product is sent to the product bin.

According to the national environmental protection requirements, the new coal-fired boiler is necessary to complete the preparation of pulverized coal systems, vertical mill has the following benefits: energy-saving environmental protection, space less space, easy maintenance, operation gradient, PLC automatic control.
It is not only pulverized coal preparation equipment uses vertical mill, quartz stone powder, cement mill and other industries milling system can use vertical grinding equipment.