SU1710735A1 - Device for homogenizing quality of hard loose materials - Google Patents

Abstract

This invention relates to the development of minerals by the open or underground method. The goal is to improve the quality of averaging solid bulk materials. The device has a receiving tank consisting of a loading unit and a discharge body, and a mixer, made in the form of truncated prisms installed one above the other. The prisms have three vertical and one inclined walls, in the junction of which at the bases of the prisms are installed opening the bottom. The upper prism is connected to the loading unit, and the lower - to the discharge body. Relatively to each other, the prisms are installed with the possibility of transferring solid bulk material through the opening bottom of the above-installed prism onto the inclined wall below. 3 ill. ≫ & * "• e

Description

The invention relates to the mining industry, in particular, to devices for averaging the quality of ores of different grades and coals of different ash content, and can be used in the development of minerals by the open or underground method in land and underground complexes of mining enterprises.

A device for averaging bulk materials is known, including a feeder, a discharge body and a mixer, made in the form of truncated conical funnels installed one above the other, the bottoms to (which are located in different planes relative to each other.

However, the device does not provide uniform averaging of the material over the entire cross-sectional area and longitudinal section of the mixer, and the low-tech manufacturing of this device reduces its reliability and limits its practical application.

The closest in technical essence to the proposed device is a device for averaging the quality of solid bulk materials in the process of gravitational movement, including a receiving tank, a discharge body and a mixer, made in the form of inverted truncated pyramids and gable dividers placed between them.

A disadvantage of the known device is that there is no sufficient averaging of the quality of solid bulk materials due to this; that in the process of moving from top to bottom under the action of gravitational force, the solid bulk material is divided into two streams, which are periodically connected in the mixer so that active mixing occurs only in the contact zone of the two streams, while the mixers and dividers experience large dynamic loads and are subject to rapid wear, moreover, the device has a complex boot node, reducing the reliability of its work.

The purpose of the invention is to improve the quality of averaging solid bulk materials due to their repeated mixing. The goal is achieved by the fact that the device, including the loading unit and the unloading body, is equipped with a mixer, made in the form of truncated prisms, mounted one above the other, the top (first) of which is connected to the loading unit, and the bottom (last) is with the unloading body, having three vertical and one inclined wall, at the interface of which, at the base of the truncated prism, are opening bottoms, and the truncated prisms are set relative to each other with the possibility of bypassing solid bulk of the material through the opening bottom of the above-installed truncated prism on the inclined wall of the downstream truncated prism.

Such an arrangement and the shape of truncated prism containers promotes the formation of an oblique-layered structure when the bulk material is loaded, and after filling the container, the material flows out across the layers formed, first of all, over the open bottom along the side vertical wall, and then located on a sloping wall. THEREFORE, the lower part of the next container gets, in the direction of the inclined-layer structure along its inclined wall, the bulk material located in the previous container above its bottom along its vertical wall, and then the rest of the material, and so on, which ensures its thorough mixing. . At the same time, due to the sliding of the solid bulk material along the inclined walls of the containers located one above the other, the dynamic loads that arise when the bulk material moves from top to bottom under the action of gravity forces are significantly reduced. The proposed device for averaging solid bulk materials is characterized in that the mixer uses containers made in the form of truncated prisms with three vertical and one inclined walls, at the junction of which the measured bottoms are located, and the two near truncated prisms

the mixer is located relative to each other with the possibility of bypassing solid bulk material through the opening bottom of the above-mentioned truncated

prism on the inclined wall below the truncated prism.

However, containers made in the form of truncated prisms, having three vertical and one inclined walls and installed in the mixer sequentially under each other with the possibility of transferring solid bulk material through the opening bottom of the above-installed truncated prism onto the inclined wall of the below-installed prism, exhibit new properties , which leads to an increase in their average ability.

FIG. 1 shows the device section; figure 2 - top (first) capacity with

0 slab overlap, isometric; Fig. 3 shows the loading and unloading of the mixer tanks.

The device contains a receiving tank 1 consisting of a boot node 2 and

5 mixer, in which the containers are located in the form of truncated prisms 3-6. The boot node 2 is connected to the first tank of the mixer 3 and consists of a slab 7, in which the loading hatches 8 are located.

0 All containers of the mixer are made in the form of truncated prisms, having three vertical and one inclined walls and are provided with opening bottoms 9-12, respectively, located in the bases

5 truncated prisms at the junction of the vertical and inclined walls. The bottom container of the mixer 13 is connected with the discharge body 14.

The device works as follows.

The solid bulk material is supplied to the first tank 3 via the loading unit 2 by mountain transport, for example, by dump trucks 15, which call in on the slab 7 and unload (alternately or simultaneously) into the loading hatches 8. After the first tank 3 is filled with the bulk material, it opens bottom 9, and a mass of different quality rushes into

0 next tank 4. And first of all, ore mass 16 is poured out, located above the bottom 9, along the side vertical wall, along the truncated ellipsoid (Fig. 3), and then the remaining part 17.

5 In the same sequence, the ore mass is filled up with the following tank 4: its lower part 18 is filled with bulk material 16 located in the previous tank above its bottom along the vertical wall, and the upper part 19

filled with bulk material 17 located in the previous container above its inclined wall. Then the bottom 10 of the second tank 4 is opened, and the process of movement of the ore mass is repeated in the sequence described. Having passed the entire mixer, solid bulk materials accumulate in the lower bunker-accumulator 13, also in the form of a truncated prism, until loading into the vehicle, such as a railway car 20. Direction of movement of the bulk material through the mixer capacity 3, 4, 5 and 6 shown by arrows.

After the first capacity of the mixer 3 is loaded, its bottom 9 is closed and the averaging process starts again. It was established experimentally that the effectiveness of averaging is not; depends on the method and order of loading the solid bulk material into the first tank of the mixer, and the averaging coefficient in the proposed device is as high as 94.

Formula a and 3 for brea

A device for averaging the quality of solid bulk materials, including

a receiving tank consisting of a loading unit and a discharge body, a mixer with walls made in the form of truncated prisms installed one below the other, the top of which is connected to the loading node, and the bottom one is connected to a discharge body, improving the quality of averaging solid bulk materials, the truncated prisms have three vertical and one non-sloping walls, at the junction of which at the bases of the truncated prisms are installed opening bottoms, and the truncated prisms have one another, with the possibility of transferring solid bulk material through the opening bottom of the above-installed truncated prism onto the inclined wall of the im- installed truncated prism.

20

FIG 2

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Claims (1)

Claim A device for averaging the quality of solid bulk materials, including a 5 receiving tank, consisting of a loading unit and a discharge unit, a mixer with walls made in the form of truncated prisms mounted one below the other, the upper of which is connected to the loading unit, and the lower one - to the discharge unit , characterized in that, in order to improve the quality of averaging of solid bulk materials, the truncated prisms have three vertical and one inclined15 walls, in the place of their mating in the bases of the truncated prisms opening bottoms are provided, and the truncated prisms are mounted one relative to another with the possibility of transferring solid bulk material through the opening bottom of the above-installed truncated prism to the inclined wall of the lower-installed truncated prism.