FLUSHING DEVICE WITH UNINTERRUPTED DISCHARGE OF CONCENTRATE Russian patent published in 1997 - IPC

FIELD: dressing useful minerals and particularly extraction of valuable heavy minerals and noble metals from placer deposits. SUBSTANCE: industrial device has unit for preparation and conveying sands, units for catching heavy gold, native gold, gold smalls and fine gold, as well as for additional catching of valuable component from retained product. Preparation and conveying unit has a site for delivery of sands by bulldozers, bar screen, over which are installed at least two high-pressure sprinklers, sump for collection of crushed gold ore, perforated site for removal of boulder-and- pebble material, hydraulic elevator with pulp feed line. The unit for catching heavy gold has a short deep sluice box. The unit for catching gold smalls and fine gold has a screen with a pan, sluices with an uninterrupted discharge of concentrate, gravity-and-centrifugal apparatus. The unit for recatching heavy fraction from undersize product is made in the form of troughs with V-shaped bottom and appliance for discharge of concentrate. The flushing device may be provided with facilities to connect the sump with deep sluices for delivery of undersize product. EFFECT: improved efficiency. 1 cl, 4 dwg