煤矿井下干法洗选系统设计

he amount of coal gangue in arid and semi-arid areas, in particularly even reach 40% when the coal seams which contain dirt bands, increased significantly with growing complexity of coal mining conditions compared to the past. The coal preparation process transfered to underground can help us achieveing underground coal separation, clean coal on the wells, also underground gangue disposal with backfill mining. we are preliminary design the dry coal preparation system According to the characteristic of coal preparation in China＇s water shortage region. (1) Innovating concept of the traditional ground-separation, achieving the integration of Underground coal separation -Backfill mining, solving gangue pollution and ground subsidence problems and real sense the "green mining";(2) Horizontal reconstruction of the coal preparation machine to suit the limited underground space; (3) ground preparation equipments into the wells, with explosion-proof, dust-proof, anti-static et technical requirements.