UNDERGROUND ORE-SEPARATION ORE DRESSING COMPLEX

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to mining and may be used in ore dressing. Proposed complex comprises receiving hopper, crushing and screening unit, assembly to feed ore to separation, ore control station, ore lump separators, concentrate and reject discharge conveyors arranged in underground openings. Assemblies feeding ore to separation and X-ray-type separators are arranged on two levels in long openings communicated by box holes to accumulate and feed ore to separators by gates arranged at their outlets. Said box holes are located at 5-7 mm from each other to feature diameter of 1.0-1.5 mm. Assembly feeding ore to separation represents combination of openings, each being 120-40 0m-long and having 2.5-3 m-diameter, and connected with crushing and screening assembly to allow every opening to feed ore of particular size grade to box hole. Every separator comprises, at least, one additional channel for cleaning rejects after separation of concentrate in main channel. Conveyor belts of said main and additional channels are located one above the other. Openings accommodating said assembly feeding ore to separation and separators are spaced apart for 15-20 m along vertical. X-ray-type separator channel comprises, at least, one x-ray useful component content analyser connected with separation device made up of, at least, one pneumatic blowout nozzle. Every aforesaid assembly is equipped with conveyor provided with unloading device driven along openings length. Crushing and screening unit allows producing four flows of ore sized to (-300+120), (-120+50), (-50+15), (-15+0) mm, with (-15+0) mm-ore directed to concentrate discharge conveyor, the remaining flows being used for filling box holes.;EFFECT: higher efficiency of separation and quality of concentrate, reduced costs.;8 cl, 3 dwg