DRESSING MODULE FOR COMBINED PROCESSING OF PERMAFROST TAILINGS FROM DRESSING OF IMPREGNATION COPPER-NICKEL ORES OF NORILSK DEPOSITS Russian patent published in 2014 - IPC B03B7/00 E21C41/00 

FIELD: process engineering.

SUBSTANCE: invention relates to mining and can be used for extraction of valuable components and products of their processing, particular, for extraction of copper, nickel and iron sulphides and noble metals from aged tailings of suspended tailing pit of in cryolite zone of Norilsk deposits. Dressing module comprises open-pit field, two or three dredges, beach pump station consisting of stationary and vibratory screens, sunk basin with overflow pocket communicated by gravity feed hydraulic transport with open-pit field. Besides, it comprises two pump, pressure five-jet pulp separators communicated with vibratory screens, sunk basins and pump communicated with batteries of desliming 250 mm-dia hydraulic cyclones with their sand outlets connected via sunken basins and controlled-delivery pumps with said pressure five-jet pulp separators and, further, with rotary separators. Tailings from the latter are communicate by gravity feed hydraulic transport via appropriate sunk basin and controlled-delivery pump with mechanical camber flotation machine consisting of 130 m³-chambers. Concentrate outlet is communicated with appropriate sunk basin and controlled-delivery pump and, further, with pneumomechanical camber flotation machine consisting of four first-cleaner 17 m³-chambers. Concentrate outlet is communicated with appropriate sunk basin and controlled-delivery pump and, further, with pneumomechanical camber flotation machine consisting of four second-cleaner 8 m³-chambers. Module includes one or two giant jets installed in open-pit field lane, distribution box to direct portion of warm desliming drains by gravity feed hydraulic transport to open-pit field to accelerate tailing thaw and wash-off at two or more point of the pit and further direction to pit lane, screens mounted at beach pump stations, said screens feature 12-16 mm square meshes. Main flotation chamber has three chambers. Desliming hydraulic cyclones feature two cones with 20-10 deg-taper angle. Beach pump station sunk basin overflow pocket is additionally communicated by gravity feed hydraulic transport with two or three points of open-pit working board to return excess pulp into lane and to accelerate tailing thaw and wash-off.

EFFECT: higher yield and quality of flotation, decreased losses of valuable elements.

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