SU1629544A1 - Method of underground processing of coal - Google Patents

Abstract

The invention relates to the underground processing of coal used in coal mining by hydraulic or mechanical hydraulic method. The goal is to provide the possibility of using hydrotechnology in dry mines and to increase the efficiency of coal processing by reducing costs in the implementation of the full cycle of underground coal dewatering and increasing it (LCO

Description

quality. The slurry from the bottom 1 is transported through the grooves 2, served in the first volume 4 for collecting coal. The volume 4 in the upper part has a thin layer clarifier 6. The water displaced from the volume 4 is directed to the next volume for sludge through the bleach branch pipe. After filling the first volume, the slurry is fed to the next volume, where it is mixed with the settled fines. The water is then displaced into the next volume. At the same time in the first

volume 4 open the window with the grating d of the passage of clarified water. It is then fed to volume 9 to collect water, where it is settled and re-supplied to bottom 1. From volumes 4, coal is discharged to conveyor 12, sent to vibrating screen 13, and then, for example, to belt conveyor 14. Coal accumulated in volumes 9 the precipitate is passed through a volume filled with coal 4. 4 hp f-ly, 2 ill.

The invention relates to methods of underground coal processing used in coal mining in a hydraulic or mechano-hydraulic method.

The aim of the invention is to provide the possibility of using hydrotechnology in dry mines, increasing the efficiency of coal processing by reducing costs in the implementation of the full cycle of underground coal dewatering and improving the quality of coal.

FIG. 1 shows a flow chart for coal mining and processing; in fig. 2.- section A-A in FIG. one.

The method is carried out as follows.

The slurry from the bottom 1 is transported through the grooves 2, then by means of the guiding device 3 by gravity fed into the first volume 4 for collecting coal, made in the form of an inclined lined accumulator output with the agitator 5. The volume 4 in the upper part has a thin brightener 6. Extruded from the volume, the water passes through the thin layer clarifier and is directed to the next volume for sludge via the outlet nozzle.

After filling the first volume, the slurry is fed into the next volume, where it is mixed with the agitator 5 with the settled fine fraction of coal, then the water through the thin layer clarifier 6 goes into the subsequent volume 4. At the same time, in the first volume, in the lower part of it, open the window 7 with the grate for passage clarified, passed through a layer of coal, water, then it

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pipes 8 are supplied to volumes 9 for collecting water, which are located below volumes 4, where it is settled and pumps 10 through pipelines are again fed to the face 1. In opening 4, the discharge window 11 is opened, coal is unloaded onto conveyor 12, sent to a vibrating screen 13 where it is finally dewatered and delivered to the surface, for example, by a belt conveyor 14. Water with fine particles of coal after vibrating the hump 13 is directed to volumes 9. To clean the volumes 9 to collect water from the accumulated coal sediment, the latter is mixed with residues bone coal pumps 15 and fed to the charcoal-filled volume 4, and in its lower part opens a window 7 for the passage of bars passed through the thickness of the coal water, wherein the coal fines fraction deposited on the largest.

In volumes 4 with a small angle of inclination, a mechanical device 16 is used to additionally load the slurry, by means of which the coal is compacted in volume, and the water starts to be displaced earlier than from the volume with a steep slope, thereby shortening the cycle of water passing from the accumulating volume 9 to the bottom and from the bottom through volumes 4 again to volumes 9. Reducing the water cycle can reduce or completely eliminate the imbalance that occurs when water is supplied to the face and returns to the accumulating volume 9 from the bottom about .

To reduce capital costs by eliminating work on the rock during the construction of coal collection

and the waters are disposed in the plane of the formation in two sub-floors, with volumes 4 for collecting coal in the upper one. This arrangement of volumes makes it possible to exclude additional equipment necessary for removal, supply of clarified liquid (coal passing through the layer) to volumes 9 for collecting water, and laborious work on the rock.

As a result of the fact that there is no crushing equipment before volumes 4, the quality of coal is increased due to a sharp reduction in the amount of fine coal.

Claims (5)

Invention Formula 1. The method of underground coal processing, including free-flow transportation of slurry along chutes from the bottom, gravity flow collection and filling of coal and water into volumes made in the form of inclined lined accumulating workings with agitators, displacing water from the volume, thickening coal and transporting it to the surface characterized in that, in order to enable in volumes for collecting water, coal sediment is transported into filled volumes for collecting coal. 5. The method according to claim. Characterized in that, in order to intensify the process of coal dewatering thirty hydroprocessing in dry mines, increasing coal processing efficiency by reducing costs when performing a full cycle of underground coal dewatering and improving its quality, the volumes are formed, and the water is reduced in the circulating cycle, are in two adjacent sub-floors, and coal is loaded into volumes the coal collection volumes are formed on but are additionally compacted. , ten 15 20 9544 the upper substage and fill them with a slurry sequentially, while the slurry stream is directed to the first along its movement volume, and the water displaced from it is sent to the second volume and form in it a slurry with a fine fraction, then after filling the first volume with coal into it is served with a slurry with a fine fraction and is mixed with an agitator, while the water in the volume filled with the slurry is separated from the coal in the lower end of the volume and is fed into the volumes to collect the water. 2. A method according to claim 2, in which the dewatered coal is passed through a vibrating screen. 3. A method according to claim 2, in order to increase the efficiency of the water clarification process, in the upper part of the volumes for collecting coal, water is passed through a thin layer clarifier. 4. The method according to claim 1, in accordance with claim 1, so that, in order to effectively dewater the coal sediment in volumes for collecting water, coal sediment is transported into filled volumes for collecting coal. 5. The method according to claim. Characterized in that, in order to intensify the process of coal dewatering 25 thirty , and reducing water in the circulating cycle, coal is forced into volumes and additionally compacted. Editor A. Shandor Compiled by S. Sopilko Tehred M. Didyk Order 421 Circulation 291 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 in Proofer I.Myska Subscription