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How many mesh can the Raymond mill grind?
Actually this problem should cent theory case and actual situation look.Take limestone, for example.
Theoretically, the Raymond mill for limestone produces a variety of fineness.
If a Raymond mill for limestone is set to grind 325 mesh powder, the fine powder in 325 mesh powder can be up to 2000-3000 mesh and above.
However, the actual situation is that the analysis accuracy of the Raymond mill for limestone is not up to, so the classification of fine powder.
Therefore, the 325 purpose powder produced will contain 325-3000 orders and more fineness powder, but the content is relatively small.
Heavy calcium carbonate powder
Generally, the particle size of the finished products of Raymond mill factory is between 80 and 600 mesh.
That is to say, Raymond mill can produce powder with fineness not exceeding 600 purposes.
However, in actual production, the fineness of the powder with large market demand is usually 120-325 mesh.
Therefore, it is rare for the powder factory to grind to the target of 500-600 by Raymond mill.
Because the Raymond mill is used to grind ore to 500-600 purposes, the mill roller requires a greater grinding force.
And the grinding force of the grinding roll comes from the centrifugal force generated when the grinding roll assembly rotates.
In order to obtain greater grinding force (centrifugal force), the central shaft speed of the Raymond mill for limestone will be increased to more than 145r/min.
At this high speed, the Raymond mill vibrates a lot.
In this way, it is easy to cause the foundation bolts of the main engine of Raymond mill to break and the main engine cover to crack.
It will also shorten the service life of the Raymond mill, which is not cost-effective.
In summary, the Raymond mill is theoretically capable of grinding to 600 purposes.
However, considering the service life of Raymond mill, it is recommended to grind 80-400 purpose powder with Raymond mill.
In this way, the advantage of high yield of Raymond mill can be brought into play.
In the same case, compared with other types of mill.
With the development of technology, there is a kind of grinding equipment called high pressure mill on the market.
It is a high pressure spring device installed on each roller assembly of the Raymond machine to increase the grinding force.
The grinding force of each roller assembly is increased by 500Kg on the original basis without increasing the speed of the main engine of for limestone .
Such a high pressure mill can grind the fineness of 400-600 powder, and also greatly improve the efficiency of powder making.
For example, GuiLin HangDa Mining Machinery Co.,LTD.GYM9720 high pressure Raymond mill for limestone .
