SU656659A1 - Self-disintegration mill - Google Patents

Description

The invention relates to self-grinding mills, working by dry or wet method, which can be used in various industries, in particular in the cement industry.

Self-grinding mills are known, including a rotating drum with face bottoms lined with slabs with lifting elements-lifters.

Known mills have the following disadvantages:

-with large diameters, the mill has a low net volume due to its small length;

- inefficient use of the part of the mill adjacent to the ends, due to the presence of deflectors that prevent the material from being placed at the ends, in the nth mill;

-low performance;

- Increasing the mill diameter to 9–11 m complicates its manufacture, transportation, and installation.

The invention is devoid of these nets stat.kov.

It is achieved that the surface of the lifting elements, oriented w in the direction of the rotated and mill, is hollow concave, or has planes that form dihedral angles when crossing.

FIG. 1 shows the mill mill, self-grinding, general view; in fig. 2, 3, 4, and 5 are examples of various lift constructors; in fig. b - space-space image of the location of the lifters on the circular surface of the mill.

five

The self-grinding mill consists of a drum 1 with flat face mills 2, lining 3 with a certain lifting ribs 4, pins 5, through which the material to be ground is fed.

Claims (2)

The surface of the lifters (Figs. 2, 3, 4, 3), oriented in the direction of rotation of the mill, is concave or has planes which form dihedral angles at the intersection. When the mill is in operation, the material is picked up by the lifters and rises to the separation point, mixing along inclined planes or concave surfaces towards the middle of the mill. The separation of the materiad occurs in the direction perpendicular to the inclined planes or the concave surface, and therefore, its movement will be difficult: circular and progressive along the axis of the mill to its middle. At the same time, large and small pieces of material will move, respectively, from the loading and unloading ends of the mill and thus prevent segregation. In addition, the movement of the lateri evil along the longitudinal axis of the mill contributes to the intensification of the grinding process, as a result of which the productivity of the mill increases by 10–20%. Since the operation of lifters is not limited to areas directly adjacent to the ends of the mill, the length of the mill can be increased, and consequently, the productivity can be increased with a diameter equal to or even smaller than that of self-milling crushes of known structures. This eliminates the need to install baffles, which provides an increase in the useful volume of the mill and more efficient use of areas adjacent to the face of the mill. Claims 1. A self-grinding mill, including a rotating drum with face bottoms, lined with lifting plates with lifting elements, which, in order to eliminate segregation of the material, increase productivity and decrease the ratio of diameter to length, as well as using it for both dry and wet grinding, the surface of the lifting elements, oriented in the direction of rotation of the mill, is made concave. 2. Mill according to claim 1, distinguished by the fact that the surface of the lifting elements has a plane, about (at the intersection of the dihedral angles. 1