DEVICE FOR GRAVITATIONAL SEPARATION OF FINE GRAIN MATERIALS Russian patent published in 2003 - IPC

FIELD: concentration of ores, noble metals, rare metals and non-ferrous metals. SUBSTANCE: proposed device includes taper bowl mounted for rotation around vertical axis with circular triangular channels on inner surface and false bottom and power supply unit which are immovably located inside bowl and pipe with nozzles for supply of water to each channel of bowl. Nozzles are mounted in parallel to inclined part of channels. False bottom is made in form of convex plate with twisting blades; height of said blades does not exceed 1/3 of plate diameter. Proposed device enhances efficiency of separation due to reduction of losses of extracted minerals and avoidance of pressing of mineral bed filling the grooves between circular channels on inner surface of trap. EFFECT: enhanced efficiency. 1 dwg