EA201700420A1 - THE METHOD OF DRY ENRICHMENT OF MANGANESE CONCENTRATES BY THE METHOD OF GRAVITATIONAL PICTURAL AND AIR-CLASSIFICATION WITH THE FOLLOWING SEPARATION OF MANGANESE AND IRON-CONCENTRATES BY THE METHOD OF MAGNETIC APACRAPSAGRAPHIC AND IRON-CONCENTRATES BY THE METHOD OF MAGNETIC CALACAPE OF MASTER AND IRON-CONCENTRATES - Google Patents

Abstract

The method of dry enrichment of manganese concentrates by the method of gravity-air classification with the subsequent separation of manganese and iron concentrates by the method of magnetic separation with their subsequent briquetting belongs to the field of the mining industry for the enrichment of minerals and the processing of poor raw materials (industrial wastes). Pre-crushed raw material fraction size of 10 mm is loaded into the hopper feeder. Then the raw material enters the dryer drum and the aerodynamic separator, followed by separation in an inertial screen. The air from the aerodynamic separator is discharged into the waste collection. With the inertial screen, the fraction is fed to the drum screen. After sifting, a fraction of 3 mm or less enters the airborne gravity purge system, where the lighter particles are dumped onto the “tails” conveyor. The enriched ore is fed to the magnetic separation drum with a vibrating tray. Under the influence of a magnetic field, the magnetoresponsive material in the flow is attracted to the magnetic system and is held on the surface of the shell. The retention of held inclusions occurs when they are moved out of the magnetic field region by ribs attached to the shell of the ribs. After magnetic separation, the fractions of iron and magnesium are separated. The invention is achieved by the technical result: the replacement of x-ray separation, x-ray radiometric separation that the feedstock enters the drying drum. Then in the aerodynamic separator is "dust removal" with the subsequent flow and separation in the inertial rumble. Next, it is fed to a drum screen with a cell size of 3 × 3. After sifting, fractions of 3 mm and less fall into the air-gravity purge system, in which particles are separated according to the principle of gravitational resistance of the material, where light particles are separated from the enriched material and sent to the “tails” conveyor. The concentrate of the concentrated ore on the drum of magnetic separation separates the fractions of iron and magnesium, which are subjected to briquetting.