How fine can a ball mill grind? How to adjust the fineness of grinding?

The ball mill is a fine grinding machine widely used in industrial production. It is suitable for grinding various ores and other materials. It has strong adaptability, continuous production, large crushing ratio, and easy speed adjustment to grind the fineness of the product. However, the ball mill can grind more thin? And how to adjust the fineness? Here are the details.



1. How fine can the ball mill grind?
It can grind 0.074-0.89mm, through the conversion between mesh and millimeter, that is to say, it can grind to about 24-200 mesh.
The ball mill has a hollow cylinder, which is filled with materials to be ground and gravel or heavy steel balls, filled with water or some other liquid, and the material is ground when the cylinder is rotated or stirred to make the gravel or steel balls roll, which will also be crushed. It is used as a sand making machine. Due to the fine grinding material, the finished product has a uniform, full grain shape and strong adhesion. Through different grades of grinding media, it can reduce the phenomenon of product over-powdering.

2. How to adjust the fineness of the ball mill?
Ball mills can be divided into grid type and overflow type according to different ore discharge methods, and the fineness of grinding is different, as follows.

1. Grid type
After being discharged from the gap of the grid plate at the ore discharge end, it flows out from the hollow journal.
A grid liner is installed on the side of the ore discharge, and there is an additional grid at the discharge end. There are many discharge holes on the grid, and the ground pulp passes through the grid liner and is lifted to the fan-shaped chamber * to the ore discharge port. It is higher than the level of the ore discharge port, so that the ore pulp can be discharged.

2. Overflow type
The material overflows naturally through the hollow journal.
There is no grid liner installed on the ore discharge side, but on the inner surface of the hollow journal bushing at the ore discharge end, a helical blade with a spiral direction opposite to the mill rotation direction is installed to prevent water balls or coarse ore blocks from being mixed with ore pulp. Discharged together, the ore discharge is due to the self-flow overflow of the ore slurry itself higher than the lower edge of the hollow journal bushing.
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