Ball mills can be divided into dry and wet grinding methods. Dry grinding does not require adding water, usually grinding is grinding, and wet grinding requires adding water. Under the action of grinding medium and water, the material is finally ground or finely ground. Rounded. So what are the differences between dry and wet ball mills? How should we choose when choosing? Here I will introduce to you by Clirik.
Difference between dry ball mill and wet ball mill
1. Difference in the way of discharging
The discharge port of the dry-type ball mill is straight and adopts the slab-type grinding tail to discharge the material uniformly; while the discharge port of the wet-type ball mill is a horn type with a built-in screw device to facilitate the discharge of the material.
2. the difference between auxiliary equipment
In the working process of dry ball mill, there is no liquid added, and dust will be generated. In order to avoid the pollution of dust to the environment, auxiliary equipment such as air induction device, dust exhaust pipe and dust collector need to be added; wet ball mill does not need to add auxiliary equipment.
3. The difference between grinding media
Dry ball mills only need to add steel balls. In addition to steel ball, wet ball mills also need to add liquid to participate in grinding.
4. Differences in scope of application
The dry ball mill requires that the material must be dry and free of water. It is suitable for materials such as cement and building stones that will produce other substances when exposed to water. The requirement of the wet ball mill is that the material cannot change when exposed to water. Most ore choose wet grinding.
The respective advantages of dry ball mill and wet ball mill
Dry-type ball mill: uniform discharge, low failure rate, no phenomena such as mashing and belly-up, no need to add water, saving costs, but sometimes dead corners are formed during the grinding process, and the materials entering the dead corners are difficult Grinded.
Wet ball mill: Due to the liquid participating in the grinding, there is no situation where the material cannot be ground into the dead angle, and the grinding efficiency is high, the application range is wide, continuous production is possible, and the environment is not polluted by dust, but after wet grinding Material needs to be dried, increasing costs.
How to choose dry ball mill and wet ball mill
If you have difficulty in choosing this type of dry and wet ball mill, then Xiaobian recommends that you first consider the nature of the material and see which grinding method is suitable. If the material you want to grind is cement, building stone, etc., These materials will change when exposed to water, and can only be ground dry. In addition, depending on the requirements of the finished product, if the fineness of the finished product is not high, dry grinding can be selected. If the fineness is high, wet grinding should be selected. For powder storage, dry grinding is also an option. The other is to consider the environment, cost, etc. In dry and dry places, try to choose dry grinding. If you don’t want to pollute the environment, choose wet grinding.