FIELD: mining.
SUBSTANCE: invention relates to mining industry and can be used during development of the natural and anthropogenic high-clayey gravel deposits of minerals with high content of fine and thin gold. Method of cavitation-hydrodynamic micro-disintegration of high-clay polymineral component of hydraulic mixture includes high-speed supply of jet, treatment of hydraulic mixture in conditions of active hydrodynamic effects by means of influence of profiled narrowing and expanding channels forming housing of hydrodynamic generator, and also – in-series installed stationary cavitation elements in form of upper beams-angles and lower beams-angles, separation with provision of deep disintegration of polymineral component of hydraulic mixture to micro level by conversion of kinetic energy of liquid flow into energy of acoustic oscillations. To amplify the fields of acoustic oscillations at the outlet of the upper diffuser, turbulence is created, which changes into rarefaction by means of an upper confuser rigidly fixed on the flange and a cross piece installed at the output of the upper confuser of the upper beam angles, which edges of the right angle are turned upwards to meet the flow, and installed vertically with a gap in relation to the wall of the upper confuser and inclination to the central part with the axis forming in the movement direction of the hydraulic mixture an additional narrowing zone – cavitation. At the outlet of the upper confuser changing into the lower diffuser, on the crosspiece there are rigidly fixed and vertically installed lower beams-angles with an inclination forming in the direction of movement of the hydraulic mixture the expansion zone in the central part and the narrowing zone in the near-wall area of the lower diffuser. Edges of the right angle of the lower beams-angles are turned inside. Subsequent turbulent mode is carried out by means of stiffening ribs installed with inclination in lower part of housing – lower confuser of hydrodynamic generator.
EFFECT: increasing the micro-disintegration process efficiency.
1 cl, 3 dwg
