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re vibration vertical roller mill
There are a number of reasons for high vibrations in vertical roller mills, such as:
1. Failure of the grout or cement material under the steel beams embedded in the foundation top, which allows oil to penetrate, further degrading the concrete. The anchor bolts, which are typically large in diameter, continue to exert force into the foundation, and the base starts to distort.
2. This distortion of the steel structure can lead to weld failures, which generates additional "looseness", and the vibration increases.
3. There are additional root causes which stem from the inevitable cold joints between pours in the foundation. These separations degrade the vibration damping apacity of the foundation.
We have done many foundation repairs and regrouts of vertical roller mills in cement plants as well as in power stations. Please contact us directly for further information.
537 posts
re vibration vertical roller mill
Hello Ashkan,
The most important factor which determines the level of vibration in a VRM is the thickness and consistency of the grinding bed. The bed thickness may be affected by the following variables;-
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Other factors which may cause vibrations are;-
There are probably a lot more, but these are some of the main factors which I have personally come across.
Regards,
Ted.
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