The ball mill is the grinding equipment after the material is crushed. Dry ball mill and wet ball mill can be selected. It should be pointed out that there are many types of ball mills, many models, and many specifications. Users can choose the right one according to the nature of the material, the method of discharging, and the object of action. Ceramic ball mills should be used for ceramic grinding, and iron ore ball mills should be used for iron ore grinding. In addition, there are large-scale ball mills, small-scale ball mills, new-type ball mills, high-efficiency ball mills, energy-saving ball mills, etc., which need to be screened according to actual conditions.
Ball mill are widely used in the production of cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal beneficiation, and glass ceramics, etc., for dry or wet grinding of various ores and other grindable materials.
The ball mill is mainly composed of feeding part, discharging part, rotating part, transmission part (reducer, small transmission gear, motor, electric control) and other main parts. The hollow shaft is made of steel castings, and the inner lining is removable. The large rotary gear is processed by casting gear hobbing. The cylinder is inlaid with a wear-resistant liner, which has good wear resistance. The machine runs smoothly and works reliably.
The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. The simplified form is a long cylinder. The cylinder is equipped with a grinding body. The cylinder is made of steel plate and is fixed by a steel liner. The grinding body is generally Steel spheres are packed into the cylinder according to different diameters and a certain proportion. The grinding body can also be steel section, which can be selected according to the granularity of the grinding material. The material is loaded into the cylinder by the hollow shaft at the feed end of the mill, and when the ball mill rotates. , The grinding body is taken away by the cylinder body due to the action of inertia, centrifugal force and friction force. When it is brought to a certain height, it is thrown down due to its own gravity. The grinding body crushes the material in the cylinder like a projectile.
The material enters the first chamber of the ball mill uniformly through the feeding device through the hollow shaft of the feeding device. There is a step liner or a corrugated liner inside the first chamber of the mill. The chamber is equipped with steel balls of different specifications. Falling after the height has a heavy blow and grinding effect on the material. After the material reaches the rough grinding in the first bin, it enters the second bin through the single-layer partition board. The bin is lined with flat liners and steel balls to further grind the materials. The powder is discharged through the unloading grate to complete the grinding operation. When the cylinder is rotating, the grinding body also slips off. During the sliding process, the material is grinded. In order to effectively use the grinding effect, the grinding body is used to grind the material with a large particle size of the general 20 mesh. Divided into two sections by a partition board, it becomes a double silo. When the material enters the first silo, it is crushed by the steel ball. When the material enters the second silo, the steel end grinds the material, and the ground qualified material is hollow from the discharge end. When the shaft is discharged to grind materials with small feed particles, such as sand No. 2 slag, coarse fly ash, the barrel of the mill can be formed as a single-chamber barrel mill, and the grinding volume can also be used for the steel section.
