FIELD: mining.
SUBSTANCE: proposed invention relates to mining industry and can be used in development of natural and technogenic high-clay alluvial mineral deposits with high content of fine and thin gold. Method for cavitation-hydrodynamic microdisintegration of a polymineral component of a hydraulic fluid includes high-speed supply of a jet into a hydrodynamic generator, treatment of hydraulic fluid in conditions of active hydrodynamic actions by means of influence, placed inside the cone-shaped housing and in-series installed stationary elements to ensure deep disintegration of the polymineral component of the slurry to the microlevel by converting the kinetic energy of the fluid flow into the energy of acoustic oscillations in the hydrodynamic generator, high-speed jet is created at the inlet of which, and for intensification of fields of primary hydrodynamic cavitation and creation of secondary acoustic cavitation there is cascade overflow of hydraulic fluid to inclined surfaces installed in series in the direction of flow of hydraulic fluid. High-speed jet from the diffuser is supplied to the articulated radius elements rigidly fixed on the crosspiece with cavitation ribs connected to the crosspiece and support beams. To intensify the hydrodynamic effect on the polymineral component of the hydraulic fluid and to obtain a given average value of the bulk density of the hydrodynamic perturbation to provide a pressure gradient exceeding the tensile strength of the microparticles there is a periodic flow of the hydraulic fluid on the smooth inclined surfaces of the cone-shaped articulated elements, made with an inverse cone changing into a straight cone, and successively installed along the perimeter of the cone-shaped housing — along the flow of the hydraulic fluid — at a minimum angle, to ensure minimum pressure losses on the surface and enhance disintegration of mineral particles. Cone-shaped articulated elements form holes for flow of hydraulic fluid supplied to flat surfaces of flow dividers at different levels for intensification of oscillations. Distance in height between cone-shaped articulated elements is set depending on the ratio of solid to liquid in the hydraulic fluid. Flow of hydraulic fluid enters confuser and is discharged via flow guides for further concentration by gravity methods. Stability and rigidity of structural design of cone-shaped articulated elements is provided by means of beams installed at all levels, and cone-shaped housing and confuser — by external support elements of stability.
EFFECT: high technological and operational efficiency of the process of deep disintegration of the polymineral component of the hydraulic fluid.
1 cl, 4 dwg
