The vertical mill is an ideal large-scale grinding equipment. It adopts the novel rolling grinding principle and scientific structural design, and absorbs the essence of many pre-grinding technologies. Compared with traditional roller mills, fine crushers, roller presses, and various types of impact crushers, it has significant advantages, and truly realizes the high efficiency, energy saving, and environmental protection of pre-powder technology. It is widely used in cement, electric power, and metallurgy. , chemical industry, non-metallic minerals and other industries. It integrates crushing, drying, grinding, grading and conveying, and has high production efficiency. It can grind block, granular and powder raw materials into required powder materials. The vertical mill has the following six outstanding technical advantages when processing materials.

1. The cost of production investment is greatly reduced

The vertical mill system has a simple process flow, compact layout, and small building area. The floor area is about 70% of the ball mill system, and the building space is about 60% of the ball mill system. It can be arranged in the open air, which directly reduces the investment cost of the enterprise. Moreover, the vertical mill itself has a separator, so there is no need for additional separators and lifting equipment. The dusty gas from the mill can be directly collected by a bag filter or an electric dust collector.

2. High production efficiency, energy saving and environmental protection

The vertical mill adopts the principle of material bed grinding to grind materials, with low energy consumption. The power consumption of the grinding system is 20%~30% lower than that of the ball mill, and with the increase of raw material moisture, the power saving effect is more obvious. Compared with the ball mill system, the energy consumption of the vertical mill system can be saved by 30% to 40%. The vertical mill does not have the metal impact sound of steel balls colliding with each other and hitting the liner in the ball mill during work, so the noise is low, which is 20~25dB lower than that of the ball mill. In addition, the vertical mill adopts a fully enclosed system, the system works under negative pressure, no dust, and the environment is clean.

3. Strong material drying ability

The vertical mill uses hot air to transport materials, and the temperature of the air inlet can be controlled when grinding materials with high moisture content, so that the product can reach the required final moisture content. It can be dried in the vertical mill—grind materials with a moisture content as high as 15%~20%.

4. Easy to operate and maintain

Equipped with an automatic control system, it can realize remote control and is easy to operate; by checking and repairing the oil cylinder and flipping the boom, the roller sleeve and liner can be replaced conveniently and quickly, reducing the loss of enterprise downtime.

5. Product quality is stable and easy to detect

The chemical composition of the product is stable and the particle gradation is uniform, which is conducive to calcination. The time for the material to stay in the vertical mill is only 2~3 minutes, while it takes 15~20 minutes in the ball mill. Therefore, the chemical composition and fineness of vertical mill products can be quickly measured and corrected.

6. Small wear and high utilization rate

Since there is no direct contact between the grinding roller and the grinding disc during the operation of the vertical mill, the wear is small, and the metal consumption per unit product is generally 5~10g/t.