Vibratory sluice

(Figure) The vibratory sluice

VIBRATORY SLUICE (EN: vibrating lock, vibrating sluice; DE: Vibrationsschleuse; FR: ecluse vibrante; ES: esclusa vibratoria; RU: вибрационный шлюз) is the apparatus for the separation of the mineral grains according to the density within the stream of the liquid, which is flowing on the oscillating inclined plane. At the vibratory sluice, they beneficiate the finely grained ores and sands of the placer deposits of gold, platinum, cassiterite, wolframite, and so on. The major working element of the vibratory sluice (see the Figure) is the vibrating (the frequency is 1000-1300 oscillations per 1 minute, the amplitude is 0.2-0.3 millimetres) inclined trough of the rectangular cross section with the rough coatings or wooden (metallic) stencils. The trough is attached to the frame using the shock absorbers, and is driven into the motion using the vibrator. The slurry (the particle size of the material is up to 15 millimetres) with the dilution ratio Liquid:Solid of at least 5:1 is delivered into the upper part of the vibratory sluice. During the movement through the sluice, the heavy minerals are concentrated on the bottom of the sluice between the stencils, or are delayed by the rough surface of the coating, while the lightweight minerals are carried away to the discharge end of the vibratory sluice. The effectiveness of the work of the vibratory sluice depends on the angle of inclination, on the speed of the flow, on the filling of the trough with the slurry, on the frequency of the removal of the minerals, on the structure of the stencils and rough coatings. The performance of the vibratory sluice, in case of the particle size of the material, which is beneficiated, of 15 millimetres, is 15-20 cubic metres per hour per 1 metre of the width of the sluice. The pipe-shaped vibratory concentrator is the variety of the vibratory sluice.