Small vertical roller mill is as one kind of grinding mill equipment more widely used in recent years, especially in large-scale coal preparation of the boiler. Vertical roller mill likes ball mill is used a lot of years. Vertical roller mills of ZK production is with high reliability, customer reputation, from the continuous improvement and complement of ZK Corp.

In recent years, the comprehensive benefits of the vertical roller mill is more and more obvious because of the advantages of energy saving in the cement industry. The vertical roller mill has also been widely used and promoted in the electric power industry, metallurgy industry, chemical industry, non-metallic industry and other industries. Vertical roller mill is main used in grinding raw materials, clinker, granulated blast furnace slag, iron ore, limestone, coal, coke, coal gangue, fly ash, volcanic ash, gypsum, calcite, pyrophyllite, quartz, clay, sand stone, bauxite, silica fume, calcined rice husk and other metal and non-metallic mineral processing industry.

Working principle of small vertical roller mill:

Materials fall down to the center of the disc through the discharge tube, and the constant speed of the rotating disc by means of the role of centrifugal force will be evenly dispersed outward material, then the formation of a certain thickness of the material bed, the material is roller compaction and crushed at the same time by a number of rollers on the grinding disc. The material is continuously moving under to the outer edge of the disc movement because of the continuous drive of the centrifugal force. When the material the disc encounters the hot gas entering the roller mill through the air ring, the material rises, and through the middle of the mill shell into the separator, the material and the hot gas for a full heat exchange in the progressing, moisture is quickly evaporated. The classifier is controlled the finished product granularity of the roller mill outlet, 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 finished product bin.

At the request of national environmental protection, old-fashioned boiler must be eliminated. The new pulverized coal boiler must be equipped with pulverized coal preparation system. The benefits of vertical mill include: energy saving, environmental protection, occupying less space, easy operation, PLC automatic control, convenient maintenance.

Vertical roller mills are not only on the use of pulverized coal preparation, but also can be used in quartz stone powder mill, cement vertical roller mill and other industries milling system.