Analysis and method of common operation problems of vertical roller mill

Analysis and method of common operation problems of vertical roller mill

In the operation process of the vertical roller mill, sometimes due to the fault of the operator, although the problem does not come out immediately, there is a big trouble hidden in the fault. When the problem is more, the vertical roller mill will be damaged. How to operate the vertical roller mill correctly? The mining industry is more important in the process of mineral processing. Now the mining industry is developing rapidly and the skilled workers are relatively scarce. Many of them have not been trained in long-term formal training, which has caused huge economic losses to the mining enterprises. In addition, the operation of the vertical roller mill belongs to the practical experience of production technology, and the technical experience in this area is also rare in various books.

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To this end, we combine the multi-year experience and theoretical technology of many manufacturers in the production and commissioning, analyze the operation of the vertical roller mill, and summarize the following common problems in the operation of the vertical roller mill.

First, the problem of the vertical roller mill equipment itself

  • a. vertical roller mill model selection: Different vertical roller mill models can meet different process technical requirements. This factor must be properly selected during design to avoid the situation affecting production during operation;
  • b. Installation of vertical roller mill: Whether the vertical roller mill is correctly installed directly affects the worker's operation. After the vertical roller mill is installed, it must be checked to avoid problems such as misalignment and misalignment of the gears.

Second, the vertical roller mill current value becomes smaller

When the vertical roller mill is operating, there will be a phenomenon of swelling. This is because when the mill has a large amount of ore, the steel ball and ore are operated together with the vertical roller mill grinding roller, and the ore of the vertical roller mill discharge port. The grain size becomes thicker. At this time, the vertical grinding work becomes smaller, and the electric energy is converted into kinetic energy to become smaller, and the electric energy is correspondingly smaller. When the voltage is constant, if the electric energy becomes small, the change is caused by the current value becoming smaller.

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Third, the grinding fineness is not up to standard

The cost of grinding operations is a higher part of the ore dressing plant. How to effectively and rationally control the grinding fineness is an important factor that directly reduces the cost of mineral processing and improves the economic benefits of the plant. Grinding fineness is one of the many factors affecting the beneficiation index. The size of grinding fineness directly affects the level of concentrate and the recovery rate of the product. In summary, the factors affecting the fineness of grinding are: raw ore hardness and crushing granularity. The size, the sieve mesh, the size of the ore, etc., understand these influencing factors, we need to find one by one in the production operation to find a good adjustment factor.

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