Ball mill is the key equipment for grinding after the crushing process, which is widely used in the manufacture industries, such as kaolin, quartz, feldspar, new building material, refractory material, fertilizer, ferrous metal, nonferrous metal and glass ceramics and ball mill can be used for the dry and wet grinding for all kinds of ores and other grinding materials.

However, what are the factors that improve the grinding fineness? There are the following four aspects：

1. When fine grinding is required, a grinder with a longer barrel can be used.

2. The type of lining plate of the grinding machine has a great influence on the grinding process. When fine grinding, a smooth lining plate or a slightly protruding lining plate can be used, and the effect is very good.

3. Reduce the ore feeding granularity of the grinder.

4. Reducing the grinding concentration can make the grinding fineness finer.