pre-grinding vertical roller mill with power saving feature

Pre-grinding Vertical Roller Mill Overview

Pre-grinding Vertical Roller Mill combines the structural features of flat disk and conical grinding rollers, and shears, squeezes and grinds the material under high pressure through multiple symmetrically rotating conical rollers.

Working Principle of Pre-grinding Vertical Roller Mill

The main components include motor, reducer, grinding disk, grinding roller, hydraulic device and lubrication device. The material enters the center of the mill through the entrance chute, and with the centrifugal force generated by the rotation of the mill, the material is thrown into the grinding area. At this time, through the three symmetrical rotation of the cone roller exerted by the high-pressure effect, the material is sheared, extruded, crushed and ground. The crushed material enters the lower shell of the mill through the outer ring of the grinding disk, and is scraped into the lower chute by the scraping plate. This process, under constant high pressure, can significantly improve the grinding efficiency and reduce energy consumption.

Pre-grinding Vertical Roller Mill realizes material shearing and extrusion crushing through the combination design of flat disc and conical grinding roller. After the material enters the grinding disk, it is forced to enter the grinding area under high pressure, and through the centrifugal force, the material is continuously extruded and ground by the grinding rollers, so as to achieve the purpose of grinding. The crushed material enters the lower shell through the outer edge of the grinding disk and is then discharged.

Features of Pre-grinding Vertical Roller Mill

1. High-efficiency grinding: Combined with the design of flat disk and conical grinding roller, it improves the grinding efficiency of materials.
2. Automatic operation: The grinding roller has an automatic lifting function, which can realize no-load startup, reduce the burden of motor startup, reduce manual intervention, and improve the safety and convenience of operation.
3. Low wear design: There is a reserved gap between the grinding roller and the grinding disk and a limit switch to avoid metal friction. Through forced lubrication and sealing design, it reduces wear and prolongs service life.
4. Energy saving and consumption reduction: Compared with the traditional roller press, Pre-grinding Vertical Roller Mill is able to realize a significant reduction in power consumption, reaching an energy saving effect of 30% to 40%, and improving production efficiency at the same time.

Advantages of Pre-grinding Vertical Roller Mill

1. Small sliding pressure difference, high grinding efficiency: The use of flat disk and conical grinding roller structure, the relative sliding difference between the grinding disk and the grinding roller is small, the grinding efficiency is higher, and the output is higher under the same specifications.
2. Automatic lifting of rollers, no-load startup: The grinding rollers can be lifted by themselves to ensure no-load startup, reduce the burden of motor startup, and greatly improve the service life of the equipment and the convenience of maintenance.
3. Long service life, less maintenance: Through the reasonable bearing lubrication and sealing design, reduce wear and failure, low maintenance cost, long service life.
4. Increase production and reduce consumption with remarkable effect: Adopting new grinding technology, the production capacity of cement clinker can be increased by more than 50%, and the electricity consumption can be reduced by 30%-40%, which achieves the goal of energy saving, emission reduction and high-efficiency production.

Application Areas of Pre-grinding Vertical Roller Mill

• Cement industry: Used in the pre-grinding of cement clinker to improve cement production efficiency and reduce power consumption.
• Metallurgical industry: In the grinding of metal ores, it helps to improve the efficiency of ore processing.
• Chemical industry: In the grinding of all kinds of chemical raw materials, it plays a role in improving the fineness of materials and reducing energy consumption.
• Building materials industry: Used in the production of various building materials grinding, such as limestone, gypsum and so on.
• Coal industry: In coal grinding, it reduces power consumption and improves production efficiency.