1. Different scopes of application
The dry ball mill requires that the material must be dry, without water or other liquids, and is suitable for materials such as cement, building stone and other materials that will produce other substances in contact with water; in addition, it is required to store and sell finished materials in powder form , you can also choose dry grinding; wet ball mill requires that the material cannot be changed in contact with water, water or anhydrous ethanol can be added during grinding, and water grinding is selected for most ores. During wet grinding, the ratio of steel balls, materials, and water is 4:2:1, but the ratio will change with different materials, and the specific ratio needs to be determined through the grinding test.
2. Different equipment structure
The basic structure of dry ball mill and wet ball mill is composed of feeding part, discharging part, transmission part (reducer, small transmission gear, motor, electric control), rotary part and other main parts. The difference lies in the discharge part: the discharge port of the dry ball mill is a straight cylinder type, and the grate type grinding tail is used to discharge the material, and the discharge is uniform. Auxiliary equipment such as dust collector; the discharge port of the wet ball mill is horn-shaped, with a built-in screw device, which is convenient for discharging, with high grinding fineness and good beneficiation effect.
3. Different advantages and characteristics
The dry ball mill adopts the grate plate type grinding tail discharge, the discharge is uniform and smooth, the failure rate is low, there will be no phenomenon such as paste grinding and belly swelling, no need to add water, saving water resources and costs. However, in the process of grinding, sometimes there will be dead ends, and the materials entering the dead ends are difficult to grind. The wet ball mill has high crushing efficiency, a wide range of applications, continuous production, and the fineness of the finished material can also be adjusted. It can also effectively avoid the occurrence of "closed" cracks in the mineral material. Since water needs to be added during the grinding process, there is no material. It also avoids dust pollution when entering the dead angle that cannot be ground. However, the material after water milling has to be dried, which increases the cost.
Based on the above information, ball mill dry grinding and water grinding have their own advantages and disadvantages. When purchasing equipment, users should choose according to their own production needs, or they can consult professional manufacturers to provide you with a reasonable production plan according to your production situation.