SU1726025A1 - Tumbling barrel - Google Patents

Abstract

Use: for grinding materials in the mining, chemical, construction and other industries. SUMMARY OF THE INVENTION: A drum mill has a drum 1 with end caps 2 and 3, a loading 4 and a discharge 5 neck, the loading neck 4 being made in the form of a glass, the bottom of which protrudes over the inner surface of the end cover 2, and on its side surface inside drum 1, windows are made that are connected to curved channels placed on the inner surface of the end cover 2, the convexity direction of which coincides with the direction of rotation of drum 1. 2 Il.

Description

L

t

V //

qwe.i

The invention relates to the grinding of ores and can be used in the mining, chemical and construction industries.

The purpose of the invention is to improve the grinding efficiency and reliability in operation.

Fig, 1 shows a drum mill, a general view; in fig. 2 is a section A-A in FIG. one.

The drum mill includes a drum 1 with end caps 2 and 3, a loading 4 and a discharge 5 throat, and an unloading grill 6. In the loading neck 4, made in the form of a glass, the bottom 10 of which projects above the inner surface of the end cover, there are windows 7 connected to curved channels 8 placed on the inner surface of the end cover 2. The direction of the convexity of the channels coincides with the direction of rotation of the drum. The curved channels terminate in the discharge ports 9.

The mill works as follows.

Drum load balls. The source material is fed into the loading neck 4 and through the windows 7 enters the channels 8. The material, moving along the channels 8, through the discharge ports 9 enters the grinding chamber at a level located above the loading neck.

Performing the filling neck in the form of a glass prevents the return of material

 at

the rial and balls back into the filler neck, which allows the drum to be filled with 75% balls. Grinding, the material moves along the length of the drum 1 to the discharge grid b and is discharged through the discharge opening 5.

In the proposed drum mill, the material and grinding media are not thrown back into the filling neck, which increases the reliability of the mill and creates conditions for increasing the filling level of the drum with grinding media. The high degree of filling of the drum with grinding bodies ensures high grinding efficiency.

Increasing the degree of filling of the drum with grinding bodies by 25% compared with the prototype makes it possible to increase the grinding efficiency by 17%.

Claims (1)

Invention Formula Drum mill, including a drum with end caps, loading and unloading neck, characterized in that, in order to increase grinding efficiency and reliability in operation, the feed neck is made in the form of a glass, the bottom of which protrudes above the inner surface of the end cover, and on its side the surfaces inside the drum are windows connected to curvilinear channels placed on the inner surface of the end cover, the direction of convexity of which coincides with the direction of rotation no drum.