Ball mill technology has improved energy-saving effect in recent years

The liner is the grinding body of the ball mill. During the operation of the mill, it is subjected to physical and chemical actions such as impact extrusion, friction and corrosion, and thermal effects. Therefore, the performance of the mill liner structure and material directly affects the fineness of the grinding. Degree and production cost. According to the on-site inspection of the actual contact marks of the main shaft and the taper bushing, about one third of the upper end of the taper bushing, the force analysis was performed according to the contact condition between the main shaft and the taper bushing in the middle position.

At present, the ball mill linings of China's metal ore concentrators are still mainly made of high-manganese steel. The main problems are the large steel consumption and large power consumption, which consumes 8 to 20 kW per ton of ore. The electrical energy of h accounts for about 45% to 65% of the total power consumption of the concentrator; the life span is short, 6 to 8 months for a ball mill towel, and 12 to 18 months for the second section; the weight is large and the noise is high; The medium anti-slurry chemical corrosive wear ability is poor. In addition to the self-weight of the spindle, the force of the spindle, the eccentric bushing, and the spherical bearing is calculated according to the two types of concentrated loads, ie Fmax and crushing force F, which are subjected to large crushing forces. The line of force intersects with the horizontal line of the contact point between the over-spindle and the eccentric bushing. a,

According to the fact that the three forces that are not parallel in the same plane are balanced with each other, the theorem of the force line of action must converge at one point. The support of the spherical bearing to the movable cone must pass through points a and o. Therefore, it can be used as a copper selection device. In recent years, the successful development of rubber liners, magnetic liners and alloy liners, etc., in the ball mill to achieve significant energy savings.