PANNING-CONCENTRATING DEVICE FOR ARGILLACEOUS METAL-BEARING SANDS Russian patent published in 2003 - IPC

FIELD: mineral concentration, particularly, devices for recovery of noble metals and other heavy valuable minerals from placer metal-bearing sands. SUBSTANCE: panning device includes successively installed sand preparation and transportation unit connected by transportation means with unit for catching large and medium in size gold and native metals, and having deep filling sluice rigidly connected with unit for catching of small size and fine gold and having screening device with tray made with W-shaped bottom and followed by pulp separator under which screw separators are installed and connected with transportation means to alluvial sand concentration plant, device for withdrawal of concentrate. Unit for sand preparation and transportation has drum disintegrator. EFFECT: increased recovery of gold and other valuable components; simplified design of device. 4 dwg