Method for obtaining and using products of hydraulic borehole mining, and device for its implementation

FIELD: oil and gas industry.

SUBSTANCE: method for obtaining and using products of hydraulic borehole mining involves drilling of production wells, water jet destruction of mine rock massif in the mineral deposit, hydraulic lifting along the well to the day surface of mine rock material, hydraulic transportation of mine rock material and its output in the form of a vertical fan-like pulp flow to the depositing site, catching from the pulp flow of a heavy ore-containing fraction, drainage of a hydraulic mixture of sand and clay via a drain channel to a sediment pond, clarification of water in the sediment pond, return of clarified water to a return water supply diagram of production wells. After gravitational separation on the depositing site of fractions of mine rocks, a turbulent flow of hydraulic mixture of sand and clay along spiral trajectory from the drain part of the depositing site is supplied by gravity tangentially to a hydraulic cyclone, where sand is deposited in an accumulating sump, where from it is pumped out by a pump. Water-clay mixture is supplied by gravity to a coagulation capacity, where accelerated deposition of clay into the accumulating sump takes place under action of gravitational forces, physical field and chemical reagent, where from it is pumped out by the pump. Clarified water is supplied by gravity to the return water supply diagram of production wells. Separated sand fraction is supplied to working face of production wells as an abrasive component of the jet and used for strengthening and disintegration of hard mine rocks. Separated clay fraction is used during drilling of production wells containing drilling and plugging compounds. The method is implemented by means of a device comprising a production well, a transport pulp line, a depositing site, a catcher of heavy ore-containing fraction, a transport system of water jet mixture of sand and clay. It includes a hydraulic cyclone and a coagulation capacity, which are made in the ground, near the lateral side of the depositing site. Wall of end face side of the drain part of the depositing site is made in the form of an opening branch of a spiral, the centre of which coincides with hydraulic cyclone centre.

EFFECT: improving efficiency of primary benefication of minerals on a production field at hydraulic borehole mining.

8 cl, 4 dwg


The invention relates to the separation of solid materials using liquids, namely, the leaching of granular, powdered or lump materials using hydraulic classifiers, and can find application for primary processing of minerals in borehole hydropobic (SRS).

The known gravitational methods of solid commercial minerals (see, for example, NR. Shokhin and other Gravity concentration methods. M.: Nedra, 1980; Mountain encyclopedia, Volume 2, p.157-160. Publishing house "SE", 1986, and others). The essence of these methods consists in the separation of minerals by density in a field of gravity or centrifugal forces to separate the waste and obtain a concentrate. The main factors of separation by gravitational enrichment are static and dynamic effects of water, suspensions or air.

Among gravitational methods of mineral processing occupies an important place leaching (see, for example, the VV Trinity. Leaching of minerals. M.: Nedra, 1978; Mountain encyclopedia. Volume 4, str-255. Publishing house "SE", 1989, and others). Flushing is the process of gravity separation of minerals based on the removal of impurities, impurities in suspension the influence of water flow and mechanisms and the separation of the mass from granular mother is La. There are several ways of washing, including through drain on trays and gutters, screening, strobilaceum etc. Rinse and equal way and other gravitational methods are widely used for ore dressing of ferrous, non-ferrous, noble and rare metals, precious stones, coal, construction minerals and other minerals.

Known pressure hydraulic transport - technological process of moving solid materials, for example disintegrated rocks and minerals, sand and sand-gravel mixtures and other water streams (see, for example, Smondyrev AU Pipeline transport. M: 1980; Mountain encyclopedia. Volume 2, p.36-37. Publishing house "SE", 1986, and others). Its essence is that the slurry, i.e. a mixture of water and rocks, is transported via a pipeline under the excessive pressure created by the pumping equipment. When this flow of slurry in the pipeline, as a rule, is the turbulent regime in order to provide the same density and velocity of the flow of slurry over the whole cross section of the pipe and thereby to avoid the deposition of the rocks at the bottom.

There are combined the methods of gravity separation of solid components of the slurry, in particular ore, sand and clay, with the additional factor of action - physical is about or chemical.

In practice, enrichment of rare metal ore processed Ore was used 2 scheme recycled water supply: internal and external.

When the internal circulation ore after grinding was subjected to two-step hydrocycloning for washing sand fraction, through the stage of condensation in the thickener P-30, with getting sand and plum, which was sent to the second thickener P-30 to obtain clarified water and sludge dump according to the scheme depicted in figure 1.

Thus, the factory was designed and introduced a scheme for clarification of the internal circulating water by the method of sedimentation using flocculant polyacrylamide (PAA) - molecular compound with a molecular mass of 3·106-10·107(nonionic polymer chain).

PAA dissolved in water at a temperature of 70-80°C and thoroughly mixing. In aqueous solutions of PAA gradually hydrolyzed to ammonium salts of polyacrylic acid.

Acrylamide get in the interaction of sodium salt of acrylic acid with sulfuric acid. To obtain PAA will polimerizuet in the presence of initiators are organic peroxides or nonsulfated. Apply PAA in a 0.05%solution. First prepare 1%, at a temperature of 60-80°C, which is then diluted to 0.05%. The factory was initially applied PAA in the form of a gel, masses content of the basic substance in an amount of 8%. But using it in this form has caused great difficulties when dissolved and demanded the increase of the cascade of mortar vessels, which reduces the effectiveness of his actions.

The appearance of granulated PAA allowed to eliminate the above drawbacks and to reduce operating costs for storage, transportation and preparation of working solutions, as well as significantly improve sanitary conditions at the workplace in the Department preparation of reagents. Consumption of PAA was chosen early in the laboratory and then in the industrial. It has been found that it is largely dependent on the particle size and mineral composition of the sediment in the discharge of the 1st thickener and varies within the range of 2.0-3.0 mg/m3. Circulating purified water used in the process.

External rotation did not involve the use of PAA, and there were used other reagents: iron sulfate FeSO4and lime Cao. Circulating water purified in tailings from mechanical suspensions due to the high concentration of various reagents in the process was not used, and was used in non-technological operations on the seal seals of pumps, transportation dumped products, cooling pumps. - Implemented method of ore, partially published in a special Lee is the temperature value:

L.V. Milovanov, B.P. Krasnov. Methods of chemical wastewater treatment mining of non-ferrous metallurgy. Publishing house "Nedra", 1967;

Water and wastewater treatment in the development of alluvial deposits. M., "Nedra", 1975. - Ed. V.V. Nazarov, Y.M. Chikin, V.R. Lichev, A.P. Kurylev;

Vovk N.E. water Recycling and preparation of tailings to storage. - M., "Nedra", 1977;

Hydraulic storage of tailings: a Handbook / VI Kibirev, GA Railean, G.T. Sazonov and others - M.: Nedra", 1991.

When the SRS ore in some cases, there is a need to address three objectives: primary ore beneficiation, extract associated solids and clarification of current and recycled water. Usually (VI Ahrens and others, 1980; J.V. Lieber, 1996; E.N. Levchenko and others, 1996; NI Babichev and others, 1996) for these purposes, carry out the washing of the ore and the upholding of the circulating water in the ponds-septic tanks. Known "Method of solid commercial minerals in borehole hydropobic..." RF patent No. 2431527, which is chosen for the prototype.

In the method prototype primary enrichment of solid minerals in the conditions of landfill mining in borehole hydropobic occurs through gravity separation disintegrated minerals and host rocks in a flowing liquid stream of the pulp, vyd is by the production well at a map of reclamation. The method comprises creating in the transport pipeline pressure flow of the pulp, which give a cross-section elongated shape that is elongated vertically, and laminar flow, then a steep ballistic trajectory of the jet of pulp. In the process of falling on the earth's surface a stream of pulp is divided into multiple threads, each of which is sent for further processing, in particular the re-enrichment (heavy ore fraction), warehousing (medium sand fraction), recycling (light clay fraction), and the liquid component of the pulp - water, after the pond clarifier - circulating system of the mining site.

Made in 2006-2009 Tomsk mining company and the Tomsk exploration expedition work in Bakchar the manifestation of iron ore, as well as successfully implemented by HBM selection process samples loose oolitic iron ore, with a total weight of 1.7 tons, for Polynjanskom and Bakchar license areas, contributed to the development of the prototype method and its technical implementation. Features of the composition and properties of non-metallic components of a hydraulic borehole mining stimulated the search for their useful application in drilling production wells and the destruction of the strong array of Bakchar iron ore.

According to OJSC "West Siberian testing centre" (, Novo is usnick, 2009) translation of results of chemical analysis of core material combined sample to normative mineral composition shows that Bakchar iron ore consists of gidrogenit - 35,01%, siderite - 4,30%, quartz - 24,40%, chlorite glandular - 8,69%, clay minerals (hydromica-montmorillonite, hidromorava) - 20,30%, feldspar 5.45 per cent, of phosphate - 0,93%. While quartz has a size of 0.1-0.4 mm and forms an angular grains of milk-white and yellowish-brown color, and the clay fraction is predominantly formed microcosmically aggregates with sizes of 0.1-0.4 mm composed of: mixed-layer hydromica-montmorillonite, mixed with ferruginous chlorite, geromucovit and feldspar.

Almost installed (Especially food composition hydraulic borehole mining Bakchar iron ore / Ed.: V. Lunev, A. I. Usenko, IB Bondarchuk, O.K. Skripko, IM Ivanyuk. - M: Mining information and analytical Bulletin, No. 3, 2009. - Dept. in the Ed. Moscow state mining University. - page 9)that when the SRS loose parts Bakchar oolitic iron ore on the map alluvium formed sandy material with a particle size of <0.2 mm, in the amount of 25-35% by weight of alluvial ore and clay fraction in the amount of not more than 0.5 to 1.5% by weight of the ore.

Given the above, the task was set in the conditions of landfill mining SRS to remove from alluvial to map and Deposit it in the array environment is the Nuits sand and light clay fraction, retrieved at destruction of the loose layer of oolitic iron ore, followed by use of sand and clay as the supply of working materials in the SRS process.

The problem is solved as follows. In the method prototype shown on map alluvium at SRS pulp loose ore is separated in the gravitational field of the ore and sand and clay fractions, the latter after gidrotsiklonirovaniya and thickening into sand and clay, which are used as consumable working material during drilling and SRS strong ore.

Description of the METHOD

The proposed solution actually contains the procedure for enrichment of non-metallic solids issued at the map of the reclamation of the pulp in the field of landfill SRS.

The feasibility of this enrichment occurred after the discovery of new technological properties of specific types of sand and clay, which increases the efficiency of the process of the SRS.

Thus, the acute-angled diamond-shaped crystal structure of quartz and its fortress grains give sand fraction extracted with loose oolitic iron ore, significant abrasive properties. Quite a long practice of operation steel downhole equipment at SRS Sands on the territory of Tomsk and Omsk regions showed quick wear parts, interacting with whom virusesa pulp (Vodopyanova jet cut metal). This property of quartz sand can be used for the destruction of the strong pillars in deposits Bakchar iron ore.

Microseismicity mixed-layer hydromica-montmorillonite allows you to get colloidal cleaopatra clay - expensive bentonite is used in drilling fluids and cement slurries with clay (FA Chegodaev, Z.Z. Sharafutdinov, R.Z. Sharafutdinova. Drilling and grouting solutions. - SPb.: NPO "Professional", 2007). This allows us to provide local material drilling operations at the landfill SRS (depth interval drilling - 160-250 m).

The known method is the prototype for the patent RU 2431527 improved as follows (see figure 2).

After gravity separation on map reclamation fractions of rocks, turbulent flow of the sand-clay slurry with maps of reclamation is served by gravity flow tangentially into the hydrocyclone. Swirling flow due to mistrained friction forces and friction on the walls of the cyclone becomes laminar, is deposited sand fraction. Laminar clay slurry by gravity is served in the coagulation tank, where under the influence of gravitational forces, the physical fields (e.g., ultrasound) and/or chemical reagent (e.g., polyvinylacetal) is accelerated sedimentation of the clay fraction. The clarified water from the coagulation tank by gravity will Paul who I'm working scheme of water supply production well. Besieged in the hydrocyclone sand fraction is pumped to the storage area and/or in the composition of the slurry, which is pumped downhole production well, as the abrasive component in a jet stream, where it is used for softening and disintegration of solid rock. Besieged in the coagulation capacity of the clay fraction is pumped to the storage and/or mud room, where it is used for drilling and/or cement slurries in the clay used for drilling wells at the landfill SRS.


The device is a prototype for the patent RU 2431527 is a hydraulic structure in the composition of the landfill SRS containing slurry pipeline transport issued with a slit-like nozzle directed at an angle of ~ 45° to a given surface; map of reclamation located on the classifier along the strike of the falling jet of pulp, which picks up heavy, rudosoderzhaschuyu fraction of solids in the pulp; drainage canal that connects the stock portion of the map of the reclamation pond-tank, where reclaimed water is lightened by deposition of sand and clay fractions of the pulp.

Tasked to improve the design of hydraulic structures, adapting it for selective extraction of enriched sand and clay fractions, taking into account their polezno the application in the SRS process.

This problem is solved as follows. End Board stock of the map of reclamation is in the form of drop-down branches of the spiral, the center of which coincides with the center of the hydrocyclone constructed near side Board stock of the card and Deposit it on the place of origin of the drainage channel. To place the remaining portion of the drainage channel is constructed coagulation vessel with a cross-section in the shape of a truncated triangle. The lower narrow part of the hydrocyclone and coagulation vessel equipped sungami drives deposited material, sand - in the hydrocyclone and clay in the coagulation tank, in which are placed submersible part grantsearch pumps. All changes to the design of hydraulic structures are accomplished by excavation works were created hydrotransport the surface of the card reclamation, hydrocyclone and coagulation tank covered with waterproof geotechnical material, and in the course of transporting the slurry creates an artificial slope, providing gravity movement from the classifier to drain water circulating in the system.

Further, the invention is illustrated by drawings:

figure 3 shows the design of hydraulic structures (view in plan);

figure 4 - the design of hydraulic structures (in the d side).

The composition of hydraulic engineering structures include: production well 1; transport pipeline 2; classifier 3, catching heavy rudosoderzhaschuyu fraction; map of reclamation ore 4, with the side bolts 5 and spiral stock Board 6 and the feeding of stock channel 7; the hydrocyclone 8 with sink 9; physical and/or chemical samples 10; coagulation container 11 with the sink 12 and the cumulative capacity of the water circulating system 13.

The invention operates as follows.

The pulp is issued from the production well 1, a transport pipeline 2 under the pressure and angle of about 45° to the earth's surface pours fan on the card reclamation 4, wherein the classifier 3 catches most severe rudosoderzhaschuyu fraction and a slurry of sand and clay is poured out on the stock portion of the map of reclamation 4, where directed lateral flanges 5 falls on a spiral end wall 6, which is spinning flow by gravity pushes it through the supply of stock to the channel 7 in the cyclone 8. In the hydrocyclone 8 sand is deposited in the sump drive, how is pumped out, and Vodopyanova the mixture through the upper drain 9 gravity is served in the coagulation tank 11. In the coagulation tank 11 is accelerated coagulation of clay particles under the influence of the coagulator 10 (ultrasonic testing and/or treatment of chemical p the agent, for example, polyacrylamide) and aggregated clay particles under the action of gravitational forces are deposited in the sump drive, how is pumped by the pump, and the clarified water through the upper drain 12 by gravity fed into the accumulation tank water circulation system 13. The angle α for sustainable gravity movement of the slurry must be equal to several degrees is determined by the properties of the slurry composition, surface roughness, and the necessary level of pressure at the inlet to the cyclone.

Geometric parameters of the spiral end wall stock of the card and Deposit it in the hydrocyclone and coagulation capacity is determined by the conditions of a hydraulic borehole mining, pressure and composition of the pulp, issued on the map of reclamation, the properties of the slurry of sand and clay, weather conditions and season of the year. But, based on the experience of the SRS Bakchar iron ore, can be formulated in the following General guidelines.

With a short flight of a jet of slurry from the slurry pipeline transport (small head or a thick pulp - T:W=1:(5÷10) suitable endwall stock of the map of reclamation to shape the spiral of Archimedes.

During the long flight jet of pulp from the transport pipeline (high pressure or liquid pulp - T:W=1:20÷100, it is desirable to perform the end wall of the stock of the map on which IVA in the form of a coil of a logarithmic spiral.

The diameter, height, and angle of aperture of the conical part of the cyclone should be chosen based on the performance of wells in the slurry of sand and clay (for example, by the known formula VI Alexander Shokhin, and A.G. Lopatin).

The amount of coagulation capacity estimated from the ratios of the weights of sand and clay fractions in the slurry, the efficiency of the coagulator and productivity drain Vodopyanova mixture of the hydrocyclone. Practically, this volume should be 10-20 times the volume of the hydrocyclone (about 100 cubic meters).

It should be noted that after the way, and the implementing device patent RU 2431527, it is expected to use the proposed invention during the development of the licensed areas of Bakchar iron ore deposits in the Tomsk region.

The technical result of the invention is the enrichment of non-metallic minerals and their use in landfill mining in the development field by way of the SRS.

1. The receipt and use of products hydraulic borehole mining, including drilling of production wells monitor the destruction of rocks in mineral deposits, the hydraulic lift well above the surface of the material rocks, hydrotestosterone material rocks and issue it in the form of a vertical fan-shaped flow of the pulp on the map of reclamation, St is the infusion of flow of the pulp heavy rudosoderzhaschuyu faction, the flow of the slurry of sand and clay drainage channel in the pond, the water in the pond, sump, return the clarified water in the circulating circuit water production wells, characterized in that after gravity separation on map reclamation fractions of rocks turbulent flow of the slurry of sand and clay on a spiral trajectory with the drainage of the map alluvium is served by gravity flow tangentially into the hydrocyclone, where the sand is deposited in the sump drive, from where it is pumped out, and Vodopyanova the mixture is fed by gravity to the coagulation tank, where under the influence of gravitational forces, the physical field and chemical reagent is accelerated deposition of clay in the sump drive, from where it is pumped out and the clarified water is supplied by gravity in the reverse scheme of water supply production wells, with the selected fraction of sand is fed to the slaughter production wells as the abrasive component monitor streams and is used for softening and disintegration of hard rocks, and the selected fraction of the clay used in drilling production wells in the composition of drilling fluids and cement slurries.

2. The method according to claim 1, characterized in that turbulent flow of the slurry of sand and clay is fed by gravity from the stock of the card and Deposit it in the hydrocyclone sweep spiral is rhymed.

3. The method according to claim 1, characterized in that turbulent flow of the slurry of sand and clay is fed by gravity from the stock of the card and Deposit it in the cyclone sweeps round a logarithmic spiral.

4. The method according to claim 1, characterized in that as the physical fields use an alternating electromagnetic field produced in volume Vodopyanova mixture when exposed to ultrasound.

5. The method according to claim 1, characterized in that as a chemical reagent is used polyacrylamide.

6. The device for implementing the method according to claim 1, including mining hole transport pipeline, map of reclamation, the catcher heavy rudosoderzhaschuyu fractions, system of transporting slurry of sand and clay, characterized in that the system includes a hydrocyclone and coagulation capacity, made in the ground, next to a side Board card of reclamation, and the end wall of the bead stock of the map of reclamation made in the form of drop-down branches of the spiral, the center of which coincides with the center of the hydrocyclone.

7. The device according to claim 6, characterized in that the wall of the end side of the map, reclamation made in the form of drop-down branches of the spiral of Archimedes.

8. The device according to claim 6, characterized in that the end wall Board stock of the map of reclamation made in the form of drop-down branches of the logarithmic spiral.


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7 cl, 2 dwg

FIELD: metallurgy.

SUBSTANCE: method includes the following stages. (A) Production of sludge or dispersion of a mixture, which is subject to processing in at least one dispersion medium. (B) Bringing in contact the sludge or dispersion from the stage (A) with at least one solid hydrophobic surface for binding with the latter of at least one hydrophobic substance to be released, in which the solid hydrophobic surface is a surface of the inner wall of the pipe, the surface of the plate, the surface of the conveyor belt or the surface of the inner wall of the reactor. (C) Removal of at least one solid hydrophobic surface, with which at least one hydrophobic substance is bound, from the stage (B), out of the sludge or dispersion, in which at least one hydrophilic substance is contained. (D) Removal of at least one hydrophobic substance from the solid hydrophobic surface.

EFFECT: invention will make it possible to efficiently and with high extent of purity separate hydrophobic substances from a mixture, which contains these hydrophobic and also hydrophilic substances with no necessity in connection of magnetic particles to hydrophobic components to be separated and necessity in using air flow.

11 cl, 2 dwg, 1 ex

FIELD: mining.

SUBSTANCE: proposed method involves open, underground or combined development of ore deposits, which is performed in an automated mode with extraction from ores of massif of crude high-melting metals using a melting method and a plasmotron in two stages, immediately from excavation elements of quality ore, with further separate excavation of temporary non-quality, non-quality and poor ore and rock.

EFFECT: improving development efficiency of deposits of polymineral metal high-melting ores, which consists in compact and continuous metal production, improvement of complete use of resources and produced mineral raw material, labour productivity, economy and ecological properties of production, obtainment of finished product immediately during development of ore massif, reduction of capital and operating costs, and in creation of conditions for arrangement of automated mining and smelting production.

FIELD: metallurgy.

SUBSTANCE: invention refers to non-ferrous metallurgy, and namely to complex processing of red muds of alumina industry. Processing method of red muds of alumina industry involves obtaining of red mud pulp, extraction and concentration of rich components by combination of classification and magnetic separation methods. After the pulp classification, fine-grain fraction pulp is extracted and subject to vibrocavitation treatment and further magnetic separation with extraction of magnetic and non-magnetic products. At that, magnetic product is subject to additional classification so that iron-bearing and scandium-bearing concentrates are obtained.

EFFECT: increasing the complexity degree of processing of red muds owing to increasing the extraction degree of rich components to target products - scandium-bearing concentrate and iron oxide concentrate.

4 cl, 3 tbl, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to hydrometallurgy, particularly, to mineral stock dressing devices. Proposed plant comprises reactor, control board, HV transformer, and pulse generator with bank of capacitors. Reactor is composed of rectangular cross-section vertical tube to process dry or wet mineral stock. Shelves are arranged inside said reactor hinged at 45-60 degrees to reactor vertical axis. Said shelves double as grounded electrode. HV electrode is mounted outside the reactor, at hole cut in its wall. Note here that shelf bent edge stays opposite HV electrode head to rest, from inside, onto spring-loaded support to allow vibration of shelves by shock wave effects.

EFFECT: higher quality of raw stock.

2 cl, 2 dwg, 1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to producing potassium chloride from sylvinite ores by their flotation. Proposed method comprises flotation of sylvinite ores, extraction of halite waste pile, settling, flushing and filtration of clay-salt slime. Filtration is performed at settling and filtering centrifuge, produced slime is mixed with extracted halite waste pile to make homogeneous mass. then, mix is cooled to below minus 20 degrees Centigrade and stored at exposed sites.

EFFECT: simplified process.

3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to dressing of minerals and may be used for increasing dressing efficiency. Proposed method comprises bulk extraction of ferrous of nonferrous metal ores, crushing, screening to isolate lumps and fine fraction, radiometric separation for pre-concentration of lumps to isolate rich lumps to be directed to metallurgical conversion, ore product and crushed stone while fine fraction is directed to radiometric small-portion sorting to isolate ore product and sand. Ore product is ground and directed to flotation or magnetic flotation at dressing works. Concentrated product is sintered and directed to metallurgical conversion while produced depleted product is directed to tailing dump. At preliminary concentration of classified lumps of ferrous and nonferrous metal ores is carried out in appropriate device. The latter comprises lump feed assemblies, radiometric radiation source and receivers, metal amount analysis transducers, actuators of separation of lumps with preset amount of metals from final product, and separation product discharge trays. Besides it comprises housing to accommodate all its components to make a module wherein lump feed assembly is composed of grooved vibratory feeder consisting of bed and tray arranged on said bed via elastic and spring elements to vibrate thereon. It comprises the assembly to generate forced tray vibrations with automatic adjustment of its frequency to magnitude equal to that of intrinsic vibrations of said feeder with lumps placed thereon. Said assembly is connected with grooved feeder while actuators are composed of electrically driven air valves.

EFFECT: higher efficiency of dressing, improved ecology.

2 cl, 2 dwg

FIELD: concentration of minerals.

SUBSTANCE: proposed method includes disintegration of dust at simultaneous preparation of pulp and removal of foreign admixtures; operations are performed in scrubber-washing drum. Then pulp is admitted to pulp line in counter-flow; aeration of pulp is performed in pulp line by means of air bubbles of one size and duration of life no less than 1-2 minutes; proposed method includes also forming standing acoustic waves perpendicularly to pulp flow at frequency ωac corresponding to resonance frequency ω0 of air bubbles of one size 10. Action of centrifugal and acoustic fields on pulp is performed in acoustic chamber at hydrostatic pressure of 4-5 atm. Acoustic field is formed in acoustic chamber by waves of final amplitude at frequency ωac corresponding to resonance frequency ω0of air bubbles of one size 10 by means of acoustic radiators smoothly distributed over surface of acoustic chamber.

EFFECT: enhanced efficiency of entrapping fine gold.

7 dwg