The working principle of the ball mill \x0d\ has a cylinder, and both ends of the cylinder are provided with end caps with hollow journals, and the journals of the end caps are supported on bearings. The motor rotates the ball mill through gears installed on the cylinder, which is filled with grinding media (steel balls, steel bars or crushed stones, etc.). ) and crushed ore, the total loading is 25-45% of the effective volume of the gas cylinder. When the cylinder rotates around the horizontal axis at a specified speed, the grinding medium and ore in the cylinder are lifted to a certain height by the cylinder liner under the action of centrifugal force and friction force, and then freely fall off or throw off the cylinder wall, so that the ore is crushed by impact and grinding. Ore is continuously fed from the hollow journal at one end of the cylinder, and the ground product is continuously discharged through the hollow journal at the other end of the cylinder. The movement of ore in the barrel is realized by the constant pressure of ore supply. In the process of wet grinding, the ore is carried away by the current. In the process of dry grinding, the ore is carried away by the airflow drawn from the cylinder. \x0d\ Working principle of ceramic ball mill \x0d\ The motor drives the cylinder to rotate through the reducer. When the cylinder rotates, the broken ore and steel ball in the cylinder are brought to a certain height by the liner under the action of friction and centrifugal force, and then thrown out and splashed out under the action of gravity, and the ore is gradually crushed under the action of impact and grinding. The broken ore is discharged out of the barrel through the discharging part. After the discharged minerals are classified into qualified products in the spiral classifier, the coarse sand returns to the ball mill through the combined feeder to continue grinding. The feeder continuously and uniformly feeds materials, the ore continuously and uniformly enters the ball mill through the combined feeder, and the ground materials are continuously discharged from the ceramic ball mill. Ceramic ball mill is a kind of grinding equipment that can work continuously for 24 hours. \x0d\ Working principle of lattice ball mill \x0d\ Lattice ball mill consists of cylinder, ore feeding part, ore discharging part, bearing part, transmission part and lubrication system. The cylinder is supported on the main bearing by the end cover. The cylinder and the end cover are lined with high manganese steel linings, and a grid lining plate is also installed at the ore outlet side. Pinions of different sizes are installed in the cylinder in proportion to drive the big gear on the cylinder to make the ball mill rotate. The ore is fed by the ore feeder and enters the mill through the inner sleeve of the feed journal. The ground pulp is lifted to a height higher than the ore outlet through the grid lining and the fan-shaped chamber leading to the ore outlet, so that the pulp is discharged from the mill. Because of the lifting effect of the fan-shaped cavity, the residence time of pulp in the mill is shortened, so the lattice ball mill is also called forced ore grinding. \x0d\ Working principle of overflow ball mill \x0d\ The structure of overflow ball mill is simpler than that of lattice ball mill. Except the structure of the ore outlet is somewhat different, the others are basically the same as those of the lattice ball mill. The main difference is that there is no grid plate. On the inner surface of the hollow journal bushing at the ore outlet end, spiral blades opposite to the rotation direction of the mill are installed to prevent water polo or coarse ore blocks from being discharged with the pulp. The ore output of overflow ball mill is higher than that of hollow shaft because of pulp itself.