6 reasons for the poor effect of the ball mill and the large particle size

The reasons for the coarse discharge of the ball mill are summarized in this article. 6 common reasons for the large particle size of the ball mill are summarized. If you are still troubled by this, you can refer to the solution.

A ball mill is a commonly used mine grinding equipment. Due to some special reasons, it may cause coarse discharge, large particle size, unevenness, etc., which affects the quality and price of finished products. So what are the reasons for this problem? Let’s take a look together.

1. Too few grinding bodies

If the loading of the grinding body in the coarse grinding chamber of the ball mill is too small, the steel balls are too small, or the filling rate of the grinding body in the fine grinding chamber is much lower than that in the coarse grinding chamber, this situation will lead to insufficient grinding of the material. Naturally, the grinding effect will not be achieved. The loading of the grinding body should be increased, the gradation of the grinding body should be adjusted, the proportion of large balls should be increased, or the filling rate of the grinding body of the fine grinding chamber should be appropriately increased.

2. Too much feed

When the feeding amount of the ball mill is too large or the feeding amount is too large in a short period, the grinding body will not be able to fully grind the excessive material. It should be uniformly fed and prevent too much feeding at one time.

3. The gap between the grate joints of the partition board is too large

When the gap between the grate gaps of the partition plate of the ball mill is too large, the materials that have not reached the required particle size will be screened out, so electric welding can be used to weld the steel bars to the gaps that are too large.

4. The partition board is damaged or dropped

In this case, it will cause the grinding body in the ball mill barrel to drift into the bin, and the material cannot be ground well. The partition plate should be replaced or installed, and the mixed grinding body should be sorted.

5. Too little moisture in the slurry

When the ball mill is running, if the water content of the grinding slurry is too low, the slurry will stick to the grinding body or the lining plate, forming a “buffer layer”, which affects the crushing ability of the ball mill. The water content of the slurry should be increased to an appropriate level.

The large particle size of the ball mill should be paid attention to, to avoid the poor quality of the powder and the low price caused by the poor grinding effect. The above are several common reasons for the coarse discharge. If you have any other questions about the ball mill, please leave a message for consultation.