Underground arrangement process based on coal gangue photoelectric separation

Abstract

The invention discloses an underground arrangement process based on coal gangue photoelectric separation. A coal mine underground modular compact efficient separation system is constructed, full-size-fraction separation of +35mm raw coal is realized, traditional coal gangue photoelectric separation equipment is adopted for 35mm-150mm, and novel coal gangue photoelectric separation equipment is adopted for + 150mm; the coal gangue can be accurately positioned through a chain conveyor belt, and a clean coal electromagnetic valve and a gangue electromagnetic valve are respectively arranged, so that the problems of large gravity and insufficient throwing path of large-block materials are sufficiently solved. Process links of coal mining, raw coal preparation, coal gangue photoelectric separation, gangue backfilling and the like are accurately matched and collaboratively optimized, gangue can be discharged from an underground source of a coal mine, the gangue lifted to the ground is reduced, the transportation and filling cost is saved, and the environment-friendly requirement is met. Meanwhile, the coal gangue in the underground coal mine is efficiently sorted, the gangue lifting amount can be reduced, the mining amount and the production efficiency of the coal mine are effectively improved, and technical support is provided for coal mine underground mining-washing-filling cooperative operation.

Description

technical field [0001] The invention relates to the field of underground coal gangue separation in coal mines, in particular to an underground layout process based on coal gangue photoelectric separation. Background technique [0002] The domestic photoelectric sorting industry started in the 1990s, and quickly entered a period of rapid development on the basis of introducing and digesting foreign technologies. From the initial sorting and processing of grains, beans, seeds and food, it gradually expanded to other fields. And from around 2014, it began to be used in the field of coal gangue sorting. In 2014, six coal mines in Pingzhuang of Guodian Group tried the GDRT intelligent dry separation system; in 2015, Tongmei Group conducted a test of the KRS intelligent dry coal separation system on the mine, and the on-site gangue discharge efficiency reached more than 85% with simple equipment , the economic benefits are obvious; Hancheng Mining Group carried out the BIRTLEY du...

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Problems solved by technology

[0004] However, the photoelectric separation technology of coal gangue is applied in underground coal mines, and there are no reports and application cases at home and abroad. The main reason is that the equipment for deep underground coal gangue separation needs modular and lightweight structural design and spatial layout, and it is necessary to break through the traditional ground stacking Layout concept to optimize the time-space connection of each operation unit in the process flow

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