Layout method for underground dense-medium shallow-slot coal preparation in coal mine

A dense-medium shallow groove and layout method technology, which is applied to safety devices, mining equipment, earthwork drilling and mining, etc., to achieve the effects of reducing production costs, solving gangue pollution, and saving transportation links

Inactive Publication Date: 2011-08-24
SHANDONG XINYANG ENERGY
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to solve the problem that the coal gangue dense-medium shallow groove separator works underground, and propose a method for coal preparation of dense-medium shallow grooves in coal mines

Method used

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  • Layout method for underground dense-medium shallow-slot coal preparation in coal mine
  • Layout method for underground dense-medium shallow-slot coal preparation in coal mine

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Embodiment Construction

[0013] The following takes the second mining area of ​​the coal mine as an example to combine figure 1 To further explain the technical plan, the second mining area of ​​a coal mine is currently mining the first and seventh layers of coal, and the transportation roadway and coal bunker have been built in the second mining area. gangue to backfill the goaf. Based on the above existing situation, the implementation steps are as follows:

[0014] The first step: develop gangue bin 4 in the rock formation of the mining area within 50m of the same horizontal plane as the existing coal bunker 2;

[0015] The second step: open up the first through roadway 10 between the coal bunker 2 and the gangue bin 4, and the section of the roadway can meet the size requirements of the installation of the coal gangue dense medium shallow groove separator 3;

[0016] The third step: start from gangue bin 4 to open up the second through roadway 6 in the direction of the goaf parallel to the trans...

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Abstract

The invention discloses a layout method for underground dense-medium shallow-slot coal preparation in a coal mine. The method comprises the following steps: firstly exploiting a gangue bin in the mining-area rock formation around a coal bin, exploiting a first through-roadway between the coal bin and the gangue bin, and exploiting a second through-roadway from the gangue bin in the direction parallel to the mined-out area of a mining-area haulage roadway; and then exploiting a third through-roadway which is communicated with the mining-area haulage roadway, mounting a coal-gangue dense-mediumshallow-slot separator in the first through-roadway, mounting a coal slurry processing system and a gangue breaking system in the second through-roadway, and mounting a gangue storage and filling system in the third through-roadway. According to the invention, the coal-gangue dense-medium shallow-slot separator and the coal slurry processing system are mounted underground instead of on the ground, so that all the gangues are kept underground and the raw gangues and the sorted gangues are all re-filled to the mined-out area, which prevents the pollution of the gangue hill on the ground in the coal mine.

Description

technical field [0001] The invention relates to the technical field of coal separation. Background technique [0002] At present, the coal mined underground in coal mines needs to be lifted to the ground, where it is sorted by a ground sorting plant, including three major processes: raw coal classification, product deintermediation (selection of gangue), medium recovery, and slime water treatment. The equipment layout of the process production system is huge and complicated. Therefore, coal gangue dense medium shallow tank separator comes out on the market. This machine can be used for sorting coal and gangue, and the sorting size is 13-150mm. The machine has the advantages of compact structure, high sorting granularity, small footprint and convenient operation. It can be used for gangue discharge in large coal preparation plants, instead of manual gangue selection. [0003] At present, coal mines adopt the middle and lower waste rock backfilling technology, that is, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14E21F15/00
Inventor 任立民秦文露葛怀峰
Owner SHANDONG XINYANG ENERGY
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