How to maintain good grinding effect of vertical roller mill?

How to maintain good grinding effect of vertical roller mill?

After a long period of high-efficiency operation of the vertical roller mill equipment, not only the normal wear and tear between the various parts will occur, but also the grinding fineness of the materials will not be as good as before. This article uses the working principle of the vertical roller mill as the starting point to analyze how To maintain a good vertical roller mill grinding effect?

First, the principle of vertical roller mill

When the vertical roller mill equipment is working, the material is loaded into the cylinder body by the hollow shaft of the feed end. When the vertical roller mill cylinder rotates, the grinding body is attached to the cylinder liner due to inertia, centrifugal force and friction. The upper body is taken away by the cylinder. When the material is brought to a certain height, it is thrown off due to its own gravity, and the falling abrasive body smashes the material in the cylinder body like a projectile. The material is fed into the vertical roller mill bin evenly by the feeding device through the hollow shaft of the feeding material. There is a step lining plate or a corrugated lining plate in the bin, which contains steel balls of different specifications. The cylinder rotates to generate centrifugal force to bring the steel balls to a certain height. After falling, it will produce heavy blow and grinding effect on the material. After the material reaches rough grinding, it enters the second bin through a single-layered barrier plate. The bin is set with a flat liner and contains steel balls to further grind the material. The powder is discharged through the discharge sampan plate to complete the grinding operation.

vertical roller mill

Second, how to maintain a good vertical roller mill grinding effect

  • 1. Adjust some parameters of the vertical roller mill. During the long-term operation of the vertical roller mill, the fineness, hardness, and viscosity of the materials are different, so the vertical roller mill production capacity and the grinding media will change to varying degrees. At this time, the vertical roller mill equipment Feed port size, discharge port size to readjust. If the vertical roller mill lining is worn badly or one end is already broken, it is necessary to replace the new lining plate in time. For the parts with serious wear, it also needs to be replaced by the user, otherwise it will not only affect the production but also cannot achieve good grinding effect.
  • 2, add grinding media. The grinding medium of the vertical roller mill is a steel ball. After a long time of operation, the grinding media will have different degrees of wear. If the ball is not filled in time, the vertical grinding machine will not grind the material when grinding the material. Grinding fineness is unqualified, materials are unevenly ground, etc. Therefore, timely addition of grinding media is the basis for maintaining good grinding results.

In order to maintain a good grinding effect, vertical roller mills have many methods, such as controlling the feed rate reasonably according to the vertical roller mill processing capacity, ensuring that the uniform feed prevents the vertical roller mill from being overloaded and ensuring the vertical roller mill. Long-term efficient grinding effect; regular maintenance on the inside and outside of the vertical roller mill, cleaning of the grinding chamber, maintenance of the motor, lubrication of the bearing and so on. There are many ways to maintain a good grinding effect on the vertical roller mill. For detailed information, users can consult customer service online for free.