Underground coal and gangue separation system and coal and gangue separation method

Abstract

The invention provides an underground coal and gangue separation system and coal and gangue separation method, comprising a material conveying roadway, a downhole coal and gangue separation passage, a first roadway, a second roadway, a vertical roadway, a first connection and a second connection. The underground coal and gangue separation system and coal and gangue separation method is provided to allow underground separation and separate storage of a coal-gangue mixture, the fact that the original underground wash-dressing process is complex, equipment is too large and wash-dressing capacity is low is improved, the coal-gangue mixture conveying problem and gangue surface stacking problem are solved thoroughly, ineffective lifting and conveying of a mine are greatly reduced, and green mining is truly achieved.

Description

technical field [0001] The invention relates to the field of underground coal mine auxiliary equipment, in particular to an underground coal gangue sorting system and a coal gangue sorting method. Background technique [0002] With the continuous mining of mines, the mining proportion of complex coal seams and thin coal seams increases, the amount of gangue in raw coal increases, and the ash content and moisture increase year by year. For a long time, the raw coal produced in the mine has been lifted to the ground washing plant through the auxiliary shaft for washing. After washing, the gangue is piled up on the gangue hill, which not only increases the transportation and discharge costs of the gangue in the raw coal, but also causes the mine's lifting capacity to be tight. Coal profits have declined, and gangue discharge occupies land, which further causes pollution to the ground environment, which is not conducive to the improvement of the living environment. In recent ye...

AI Technical Summary

Problems solved by technology

For a long time, the raw coal produced in the mine has been lifted to the ground washing plant through the auxiliary shaft for washing. After washing, the gangue is piled up on the gangue hill, which not only increases the transportation and discharge costs of the gangue in the raw coal, but also causes the mine's lifting capacity to be tight. Coal profits have declined, and gangue discharge occupies land, which further causes pollution to the ground environment, which is not conducive to the improvement of the living environment

In recent years, with the vigorous implementation of green filling mining in mines, the ground direct injection of underground gangue drilling has been established. After the gangue gangue is crushed, it is transferred to the underground filling work to fill the goaf, causing the gangue in the raw coal to be transported with the raw coal. After being washed out of the well, it is re-transported to the underground, which greatly increases the production cost of the mine. It is imperative to establish a washing system in the underground

However, to establish a washing system underground, it is necessary to face many problems such as limited underground space, complex production conditions, large washing equipment, and difficulty in matching the processing capacity of the washing equipment with the production capacity of the mine.

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