Vertical Roller Mill Operation And Maintenance PDF

Vertical roller mill has the advantages of high efficiency, low energy consumption, low noise, large drying capacity , product fineness easy to adjust , easy no dust pollution and maintenance, reliable operation . Especially in large grinding process, to fully meet customer needs. Widely used in metallurgy, electric power , cement , chemicals , ceramics, non-metallic minerals , plant desulfurization , slag grinding mass of materials , slag , slag , coal, cement clinker , glass, quartz , limestone and other industries and ultrafine powder grinding .

Vertical Roller Mill Operation And Maintenance PDF

We need to ensure the following aspects are normal during the operation:

• A stable material layer with proper thickness is indispensable for the well functioning of the vertical roller mill.
• Strong vibration of the mill body may cause to mechanical failure and has a bad effect on the product quality.
• The grinding pressure is one of the key factors that have a great impact on the yield and quality of products.
• If the gas temperature at the discharging port of the mill is too low, the fluidity of the material will become poor, and the qualified products cannot be discharged from the mill in time.
• In vertical roller mills, the air volume in the mill is determined by the material feed rate. The air volume can be controlled by adjusting the power of the circulating fan of the mill or the opening of the exhaust fan at the kiln tail.

Vertical Roller Mill Operation & Maintenance

• (1) Exerting pressures are 50 to 100bars on the basis of the projected area of the roll, onto the layer of clinkers passing between the two rolls.
• (2) Abrasion-resistant parts are classified in one unit type or segment type. In any type, abrasion-resistant parts should be replaced to new one or hard facing, if they are worn out. 

Vertical Roller Mill's Central Control System In Operation

Central control system of vertical roller mill consists of the industrial computer, displayer, printer, industrial control unit, etc.

The central control system enables the main parameters to be controlled accurately, achieving the coordination of the mill and other devices, high reproducibility of the same particle fineness and high production stability of the entrre mill system.

The central control syste is capable of monitoring the operating conditions of the mill system, such as the mill vibration, grinding roller pressure, oil temperature, and mill temperature. Protection setting can avoid personnel caused damage to the service life of the vertical roller mill.