SU679240A1 - Lining for ball mills - Google Patents

Description

one

The invention relates to a device for grinding materials, and in particular to ball mills, and can be applied in the building, mining and other industries.

Lime liner for ball mills, composed of a set of lining plates with longitudinal grooves of the same width and depth 1,

- This design does not ensure that the balls are raised to a height at which the grinding efficiency is greatest,

The closest technical solution to the present invention is a lining for ball mills, composed of a set of lining plates with Yarodolnka grooves 2.

No, the core of such a lining is the short life and low productivity of the mills.

In order to increase the service life of the plates and increase the productivity of the mills in the proposed lining, the transverse dimensions of the grooves are uniformly increasing from the periphery to the center of the plates, and the depth of each groove is 0.6-0.8 of its transverse size.

Figure 1 shows a plate, a view of the cross, xy in figure 2, a section along A-Ana figure 1.

The lining for ball mills consists of a set of plates 1 with longitudinal grooves 2.3 and 4, with the extreme grooves being formed at the junction of two adjacent plates.

During the rotation of the mill, balls of different

O sizes, respectively, equal to their transverse dimensions.

Along with the balls, which are in the grooves, grinded material gets into the latter, which contributes to an even greater seizure of the balls. The wedged glands wear out during the operation and, as a result of the dynamic effect of displacements of balls and ground

0 material, fall out of the grooves, and their place is occupied by less worn-out other balls. More worn balls will fall into the grooves of smaller sizes. Thus, balls of different sizes due to

5 natural selection is gradually wedged in the grooves 2-4 and protects the slab from wear.

Balls, located in the grooves, protrude. they are hovering above the slab plane to a height

Claims (2)

0 equal to 0.2-0.4 of their diameter, the image with the wavy surface of the entire lining of the mill. The presence of a wavy profile contributes to the lifting of the balls and the ground material to a large height, with the result that the performance of the ball mill increases. The slot width is selected as follows. The balls loaded into mei, tsu, have the same size in diameter. However, during the operation of the shredder, the degree of wear of the balls is not the same and, therefore, the balls have different sizes. Moreover, the efficiency of the grinding of heavily worn balls in the form of their small mass is low, so these balls moved together with the grinding material as a ballast and reduce the productivity of the mill. The presence of grooves of different widths on the slab, the largest size of which is less than the nominal size of the balls, as well as grooves with a uniformly reduced width, will make it possible for balls with different degrees of wear to be wedged. In this case, heavily worn balls that do not have an effective effect on the grinding of the material are involved (being 3 grooves) in protecting the plate from wear. The depth of the grooves must be such as to ensure that the balls are wedged and that the wavy surface of the plate is made, which contributes, besides protecting the plate from wear, to an increase in the productivity of the mill. When the depth of the grooves is less than 0.6 of their width and slight wear of the surface of the slab, the balls do not seize. With a groove depth of more than 0.8 its balls, the balls are almost at the level of the working surface and the wavy profile of the slab is not fulfilled. Thus, the groove width should be uniform, i.e. by the same amount, increase from the periphery to the center, which helps to reduce plate wear, and the depth of the groove should be 0.6-0.8 of its width, which will increase the productivity of the mill. The use of the present invention will protect the lining plates from premature wear and increase the productivity of the mills. The invention of the lining for ball mills, composed of a set of lining plates with longitudinal grooves, is because with a chain of increasing the service life of the plates and improving the performance of the mills, (the transverse dimensions of the grooves are uniformly spaced from the periphery to the center of the plates, and the depth of each groove is 0.6-0.8 of its transverse size.Sources of information taken into account in the examination 1.Parasyuk PF, et al. Improving the quality of the lining of ball mills., Torny Journal 11, 1969, p. 4951, Fig.2. 2.Krtokov D.K. Improvement of the radial equipment of the mining and concentrating enterprises, Nedra, Moscow, 1966, p.89-91, fig, 64-66 (prototype).