Separation of solid materials using liquids or using pneumatic tables or jigs and magnetic or electrostatic separation of solid materials from solid materials or fluids and separation by high-voltage electric fields (B03)

B03            Separation of solid materials using liquids or using pneumatic tables or jigs; magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields(10573)
ethod for complex enrichment of rare-earth metal ores // 2606900
FIELD: metallurgy.SUBSTANCE: invention can be used for complex processing of rare-earth metal ores, mainly tantalum-niobium ores. Method involves classification and gravitational separation of mesh minus, screw separation with subsequent concentration, extraction of scrap and nonmagnetic fractions. Non-magnetic fractions, obtained as a result of low-intensity magnetic separations, are subjected to additional dressing. Additional dressing is carried out by wet high-intensity magnetic separation 1 to produce magnetic, non-magnetic and intermediate fractions with their subsequent gravity dressing. Cleaner tailings are directed to dump. Gravity cleaner concentrates of non-magnetic and intermediate fractions after concentration on a table are combined with previously obtained non-magnetic product of low-intensity magnetic separation concentrate of table.EFFECT: high efficiency of concentration of ores, high degree of extraction of useful minerals due to improved conditions of their opening at grinding, as well as high environmental safety when using developed concentration process of these types of crude mineral ore.4 cl, 1 dwg, 4 tbl
agnetic filter // 2606645
FIELD: chemistry.SUBSTANCE: invention relates to magnetic cleaning of process liquids and can be especially efficiently used for separation of amine, used for cleaning of natural gas with high content of hydrogen sulphide. Magnetic filter comprises a reservoir, in cover of which there are cylindrical magnetic rods with sludge collecting rings worn thereon, movable plate for displacement of latter along rods, sludge-collecting rings are split and made of hardened alloy, having spring, non-magnetic and anticorrosion properties, for example, precision alloy 36NKHTYU, cladding of rods is made of stainless steel with solid chrome-plating, filter is equipped with a mechanism for post-treatment of sludge and its removal beyond filter, mechanism is made in form of installed in lower part of reservoir on a fixed axis of two pairs of pipes, welded into sleeve, which can rotate on fixed axis, tubes are provided with holes, into which is fed a cleaning medium under pressure, resultant reactive forces of flowing jets generate torque which rotates sleeve with tubes.EFFECT: invention provides high degree of cleaning filter from slug.3 cl, 4 dwg
ethod of monitoring and control over construction materials radiometric parameters // 2606414
FIELD: construction.SUBSTANCE: invention relates to production of construction materials using industry and power engineering anthropogenic wastes and can be used to control naturally occurring main radioactive nuclides. Method of construction materials radiometric parameters monitoring and control, produced from several components, involves operations of naturally occurring main radioactive nuclides quantitative content continuous measurement in each component and each component specific activity determination, transmission of obtained measurements results to control unit and performing calculation of each component weight and/or volume characteristics taking into account of obtained results, under condition of obtaining or not exceeding of finished product specified maximum specific effective activity, calculated parameters and control signals transmission to components dosing device and finished product marking with marker, corresponding to finished product specific effective activity real value, determined by each component weight and/or volume characteristics and specific effective activity values.EFFECT: enabling higher efficiency of finished products specific activity monitoring.1 cl

Intelligent system for automatic monitoring of quality and quantity of ore flow in process of preparation for concentration // 2605861
FIELD: measurement technology; mining.SUBSTANCE: invention relates to automatic continuous monitoring of qualitative and quantitative characteristics of ore flow during its preparation for concentration. Device contains automatic ore weighers and camera with video driver. Camera eyepiece is directed onto ore surface on vehicle. There is also video camera image processing unit, magnetic sensor of iron concentration in supplied ore, marking scanner of ore for decoding of qualitative and quantitative compositions of delivered ore corresponding to product passport. There is complex data unit in form of digital cluster decoding of markers of ore supplier. Device includes recording unit of ore chemical composition, automatic weighers of supplied ore, at least one unit of ore size assessment, at least one movable X-ray spectrum analyzer of chemical-mineralogical composition of ore. There is computer system evaluating nature of splices and calculating average number of target minerals in crushed ore particles and calculating percentage of desired minerals in ore flow. Device comprises at least eight elements of comparison of measured signals of parameters' character generated at output of said means of continuous and testing monitoring of quantitative and qualitative characteristics of processed ore. Video camera output through camera image processing unit in sequence via unit for estimating size of pieces and particles of ore is connected to one of computer system inputs. Output of markings reading scanner of supplied ore is connected to input of digital cluster decoding of markers by qualitative and quantitative composition of supplied ore by passport, corresponding decoding marker of supplier. Wherein one output of unit of registration amount of supplied ore is simultaneously connected to first input of comparison element and one input of computer system. Other output of chemical composition unit of supplied ore is connected to first input of comparison element and another input of computer system. Output of automatic weighers is simultaneously connected to another input of comparator for comparing quantitative values of weights of ores and one of inputs for taking accounting quantitative values of ores.EFFECT: increased efficiency of monitoring and reliability.1 cl, 2 dwg

Gate with chute variable profile ("herringbone" gate) // 2605859
FIELD: mining.SUBSTANCE: invention relates to minerals dressing, in particular to minerals processing equipment, and can be used for dressing of ores and sands containing fine gold, at concentrating mills, dredges and trammels. Gate with variable chute profile, "Herringbone" gate includes loading unit, trapezoidal chute with sides and flat bottom, consisting of two planes located one above another, one of bottom planes is rigidly fixed with chute sides, and unloading device with unloading holes throughout bottom width. Gate is equipped with at least one additional chute, each of which is made expanding in direction of pulp travel and by its end part is connected with following chute through additional insert, which is continuation of bottom lower plane from wide to narrow part. Under insert receiving-unloading devices are located. Bottoms lower planes are rigidly connected with gate boards and arranged with gap relative to bottoms upper planes, which made according bottoms lower surfaces form in form of grid consisting of two parts, hinged at chute ends, provided with guide plates installed on grids surface. Gap value exceeds width of transverse slotted holes of upper planes - chutes bottom grids. Receiving-unloading devices are equipped with locking assemblies.EFFECT: improved valuable heavy particles segregation conditions due to pulp flow hydrodynamic mode periodic changes, flowing along gate.1 cl, 5 dwg

ethod and device for processing ores containing precious metals // 2605012
FIELD: metallurgy.SUBSTANCE: invention relates to leaching precious metals from refractory gold-bearing stock. Prior to leaching moistened or dehydrated until pores filling with water ore is subjected to nanosecond electromagnetic pulses with the following parameters: duration - less than 1 nsec, duration of the front - less than 0.1 nsec, repetition frequency - more than 1 kHz and amplitud - more than 15 kV. Method is implemented at a plant including a generator and an electrode system of two electrodes, where the first electrode is made in the form of a conducting conveyor belt, the second electrode is made in the form of a flat copper plate of a square shape located above the first electrode.EFFECT: higher efficiency of opening a containing mineral matrix containing precious metals owing to creation of channels and microcracks providing access of the leaching solution to particles of the precious metals.2 cl, 1 dwg, 1 tbl

System for ultra-deep cleaning of dielectric fluids // 2604736
FIELD: chemistry.SUBSTANCE: invention relates to ultra-deep cleaning of liquid dielectric materials, preferably, turbine, transformer, aircraft and hydraulic oil. Device comprises a coarse filter, turbo-dryer with filter separator, packages of ultra-deep cleaning electrofilters, installed parallel to each other, and a centrifugal fan, mounted on tank of turbo-dryer to supply air for drying process, and behind turbo-dryer there is a coarse filter with degree of filtration, greater than that of previous coarse filter.EFFECT: longer life of oils, higher safety, power and resource saving.1 cl, 2 dwg

Electrostatic separation of mixture of valuable materials, for example, mineral salt mixture, by means of pipe separator, and device for electrostatically separating such mixture of valuable materials by means of pipe separator, and method for electrostatic separation // 2604605
FIELD: chemistry.SUBSTANCE: group of inventions relates to electrostatic separation of mixture of valuable substances. Tubular separator comprises housing pipe, having located on one end an inlet for inlet of mixture of gas and solid substance, two opposed field electrodes for deflection of positively and negatively charged particles of solid substance in stream of mixture, two installed on other end of pipe separation tongues to separate positively and negatively charged particles of substance from each other and for further passage and outlet in middle of bearing pipe a stream of gas and neutral or insufficiently charged particles. Field electrodes on its side facing inner space of pipe are closed by an insulating layer.EFFECT: preventing suspended particles from sticking to electrodes, higher efficiency of electrostatic separation.13 cl, 5 dwg

ethod of processing sulphide oxidised copper ores with copper and silver extraction // 2604279
FIELD: technological processes.SUBSTANCE: invention can be used in enrichment of copper and silver for processing of sulphide oxidised copper ores. Before feeding for acid leaching when mixing a bulk concentrate obtained from sulphide-oxidised copper ore, method comprises multi-stage bulk flotation using a sodium sulphide additive. Before first stage of bulk flotation ore is crushed to particles of 140-190 mcm, and tailings are directed to second stage of bulk flotation. Prior to second step, said tailings are ground to particles of 60-90 mcm. Sodium sulphide on stages of bulk flotation is introduced through pre-determined time intervals. Prior to extraction of copper and silver by flotation from cake of concentrate leaching, cake is milled to particles of 20-30 mcm.EFFECT: technical result is high extraction of copper and silver, as well as obtaining copper concentrate of high quality.1 cl, 1 tbl, 7 ex

Dispersion nozzle, flotation machine equipped therewith and method for operating same // 2603984
FIELD: gas industry.SUBSTANCE: invention relates to a dispersion nozzle for dispersing a liquid and a floatation plant. Dispersion nozzle for liquid dispersion, in particular a suspension, also having at least one gas, comprises a gas feed nozzle and a tubular mixing arrangement, which has a combined inlet zone for at least one gas and liquid and an outlet zone for a gas/liquid mixture formed from at least one gas and liquid. Mixing arrangement adjoins gas feed nozzle. Gas feed nozzle is tapered in direction of mixing arrangement and opens into inlet zone. Mixing arrangement in inlet zone has at least number N≥3 of suction holes for liquid. Suction holes are arranged perpendicular or at an angle to longitudinal central axis of dispersing injector. Ratio of a diameter DG of a gas outlet opening of gas feed nozzle and internal diameter DM of mixing arrangement is in range from 1:3 to 1:5. Gas-intake nozzle is equipped with at least one gas regulating valve for metering amount of at least one gas fed into liquid. During operation of dispersion nozzle, gas supply through gas-intake nozzle is performed so that, at least one gas on tas outlet opening of gas-intake nozzle has density of pulse current in range from 5·103 to 5·104 kg/(m·s2).EFFECT: technical result is increased dispersion of suspension and gas.23 cl, 5 dwg

ethod for electric cleaning and decontamination of contaminated liquids // 2603372
FIELD: treatment.SUBSTANCE: invention relates to physical and chemical agents for cleaning and decontamination of contaminated liquid media. Method for electric cleaning and decontamination of contaminated liquids includes electric absorption of contaminants by passing liquid through ferroelectric ceramic filtering granular material 1, placed in sign-constant electric field, and subsequent desorption of filtering material. Granular material used is barium titanate with grain size of 0.1-3.0 mm with non-uniform surface, coated with a copolymer of styrene and divinylbenzene having permittivity comparable with permittivity of filtering material, wherein electric field is switched off during desorption of filtering material.EFFECT: technical result is higher electrosorption capacity of granular filter material.1 cl, 3 dwg

Installation for dehydration of ore or coal flotation concentrates // 2602559
FIELD: mining.SUBSTANCE: invention relates to mining, processing and concentration of minerals and can be used in coal, mining and chemical industries for dehydration of fine products. Installation for dehydration of ore or coal flotation concentrates consists of two horizontal filtration centrifuges with elastic rotors, frame, electric motor, two squeeze rollers with automatic drives, initial pulp feed and centrate discharge pipelines, v-belt drive. Centrifuge means are mounted towards each other and have a common hopper, common initial pulp feed pipeline equipped with a distribution valve, operating in switching automatic mode in compliance with the cycles time of dehydration in centrifuges. Rotors rotation is performed by an electric motor with two shaft outputs via v-belt drive.EFFECT: technical result is efficiency increase of dehydration, as well as reduction of solid particles ash with centrate.1 cl, 2 dwg

ethod for extraction of lanthanum(iii) from salt solutions // 2602112
FIELD: chemistry.SUBSTANCE: invention relates to extraction of lanthanum (III) from salt solutions. Method involves floatation extraction using an organic phase in form of isooctyl alcohol, and a collector in form of an anionic surfactant - sodium dodecyl sulphate in concentration, corresponding to stoichiometry: La+3+3NaDS=La(DS)3+3Na+, where La+3 is a lanthanum (III) cation, DS- is a dodecyl sulphate ion. Floatation extraction is carried out at pH 6.8-8.5 and ratio of organic and aqueous phases 1/20.EFFECT: invention provides high degree of extraction of lanthanum (III).1 cl, 1 dwg

ethod of gold and palladium, platinum and rhenium extraction from pulp lixiviation tailings with their background content // 2601901
FIELD: mining.SUBSTANCE: invention relates to mining industry. Method of gold and palladium, platinum and rhenium extraction from pulp lixiviation tailings with their background content includes gravity dressing of screened pulp tailings by means of screen with holes diameter on chute bottom front compartment of 1 mm with catching bed from magnetic wires, reinforcing rubber mats with metal masks and magnetic field source in form of permanent magnets, laid at chute bottom by opposite poles without clearance. At that, heavy magnetic minerals are parallel sifted on screen, supplied at chute bottom to form wires from magnetic minerals and concentrating gold and palladium, platinum and rhenium particles in wires pores, then, removal of gravity gold is performed and wires of magnetic minerals with gold and palladium, platinum and rhenium particles are supplied to magnetic drum with electric motor and magnetic fraction is output to tailing pond by means of scraper. Remaining sand fraction containing gold, palladium, platinum and rhenium, is supplied into fine filling sluice with chutes and gold and palladium, platinum and rhenium particles with size of less than 0.25 mm are trapped.EFFECT: higher efficiency of gold and palladium, platinum and rhenium extraction.1 cl, 1 dwg

ethod of dressing and processing iron ore // 2601884
FIELD: mining.SUBSTANCE: invention relates to dressing and processing of iron ore and can be used in mining and metallurgical industry. Method of dressing and processing of iron ores involves ore crushing, magnetic separation. Initial ore is crushed and subjected to low-intensity magnetic separation to produce strongly- and weakly magnetic products. Weakly magnetic product is fed for superfine milling with subsequent high gradient magnetic separation, after which non-magnetic and magnetic fractions are obtained. Magnetic fraction is thickened with addition of a flocculant and an enzyme, simultaneously in process of thickening, strongly magnetic product of low-intensity magnetic separation is fed. Then thickened product is filtered on a filter press. Obtained filtration cake is subjected to screening I. Oversize product I is fed for drying I, undersize product I is fed for briquetting. Dried product is delivered for screening II, oversize product II of which is finished. Undersize product II is directed for briquetting, raw briquettes are dried II and dry briquettes are directed for screening III, oversize product III of which is finished, undersize product III is returned for briquetting. Drying I is carried out at temperature from 1,000 to 1,500 °C.EFFECT: higher quality of concentrate with simplification of its production.1 cl, 1 dwg

ethod for beneficiation of mineral by density of useful component and device therefor // 2601791
FIELD: mining.SUBSTANCE: invention relates to beneficiation of minerals from ore pulps and can be used for processing mineral raw material, containing non-ferrous, ferrous, rare, precious metals, non-metal minerals, as well as when treating waste water from solid particles and oil products. Method for beneficiation of minerals by density of useful component comprises passing a hydraulic mixture through, connected with pressure hydrotransport, hydraulic pipe at a rate providing stable mode of hydrotransportation of solid phase particles, wherein hydraulic mixture is passed via at least one, curvilinear portion made in said pipe in order to form stable secondary cross flow forming paired vortex, which, when applied on progressive flow of hydraulic mixture, leads to emergence of two screw threads, which change path of particles of solid phase depending on their density. Radius of curvature of pipe and average speed of hydraulic mixture is set depending on density of extracted useful component. Device for beneficiation of minerals by density of useful component for implementing method comprises connected with pressure hydrotransport hydrodynamic pipe for passage of hydraulic mixture, connected to a receiver for separated particles of useful component through a slot in its wall. Hydrodynamic pipe is made with at least with one curvilinear section, radius of curvature and speed of hydraulic mixture through which are set by selecting depending on density of extracted useful component. Slot is made on curved section. Receiver for separated particles of useful component is divided into communicating sections, each of which is equipped with locking devices, and one of them is connected to pipelines for water supply and discharge of gas.EFFECT: high efficiency of separation of particles of solid phase of different fractions from liquid during continuous operation of installation.3 cl, 4 dwg

ethod for separation of highly magnetised ores in high-gradient alternating magnetic field // 2601693
FIELD: technological processes.SUBSTANCE: invention relates to magnetic separation, namely, to methods of selective extraction of highly magnetised particles from aqueous suspensions or aerial suspension, and can be used in mining, metallurgical (obtaining raw material for direct process of steel production) and other industries. Method for extraction of highly magnetised particles from liquid media includes supply of pulp from above into a ferromagnetic highly-gradient matrix, exposure to highly-gradient alternating magnetic field, deposition of highly magnetised particles on elements of the ferromagnetic matrix, wash-out of particles from the ferromagnetic elements. Ferromagnetic matrix is exposed to alternating magnetic field with a low intensity corresponding to the maximum magnetic permeability of magnetite. Matrix is made of elastically deformable elements, besides, the curvature of the poles of the matrix corresponds to the size of extracted particles.EFFECT: improved quality of obtained concentrate, as well as higher efficiency of the method.1 cl, 1 dwg

Process line for processing ash-slag wastes // 2601648
FIELD: recycling.SUBSTANCE: invention relates to processing of combustion products and can be used at thermal power plants and in boiler houses operating on coal fuels. Process line for processing of ash-slag wastes comprises ash-slag wastes batcher, connected to the mixer volume, connected to a source of a diluting medium by the supply line, classifier of ash-slag particles, means of classified particles fractions dewatered arrays discharge . Line is equipped with the first recirculating tank, which is connected to the output of the mixer by means of the pipeline equipped with the first pump. Drain nozzle of the first recirculation tank is arranged at its top edge and communicated with the mixer by the first drain pipeline. Outlet nozzle of the first recirculation tank is arranged at its bottom and communicated with the rotary disperser inlet nozzle, configured with a possibility of impact-abrasive pulp grinding, while its outlet nozzle is connected to the input of the first classification unit hydraulic cyclone, containing also the second hydraulic cyclone, second recirculation tank and a damping tank. Sand output of the first hydraulic cyclone is communicated with the damping tank, while its clay output is connected with the storage tank of clay fraction. Input of the second hydraulic cyclone and input of the second recirculation tank are linked by a connecting pipeline equipped with the second pump with the damping tank. Sand output of the second hydraulic cyclone is interconnected with the storage tank of heavy fraction, while its clay output is connected with slimes storage tank. Each of the storage tanks and the damping tank are equipped with the drain nozzle, arranged at its top edge and connected to the input of the settling tank, output of which is connected to the input of recycling water tank by means of the third pump with the first water line, output of which is communicated with the mixer by means of the fourth pump with the second water line. Drain nozzle of the second recirculation tank is arranged at its bottom and communicated with the damper tank by means of the second drain pipeline equipped with a valve. Line is equipped with a water source configured with a possibility of its supply to the first recirculating tank and the damping tank.EFFECT: technical result is expansion of range of fractionation of ash-slag wastes by the particle size, as well as reduced pollution of the environment.8 cl, 2 dwg
Combined method of rebellious lead-zinc ores processing // 2601526
FIELD: metallurgy.SUBSTANCE: invention relates to hydrometallurgical processing of difficult to enrich lead-zinc ores. Method summary consists in direction of ore material to jigging with production of first finished lead concentrate, tailings and jigging middlings, which is after grinding is enriched on concentration tables with extraction of second finished lead concentrate, final tailings and table middlings. Middlings after re-grinding is directed to zinc bioleaching using bacterial complex of autophytic thione microorganisms with conversion of 90-95 % of zinc into productive solution. Bioleaching cake without re-grinding is delivered for recovery of lead by concentration on tables with production of lead middlings and final tailings.EFFECT: technical result is enabling higher efficiency of difficult to enrich lead-zinc ores processing using simple and environmentally safe technology with increase in zinc and lead extraction degree.4 cl, 2 ex

ethod for gravity extraction of fine and thin gold and system for gold extraction // 2601345
FIELD: mining.SUBSTANCE: invention relates to mining industry and can be used for gravity extraction of precious metals from ores, as well as natural and technogenic deposits. Method for gravity extraction of fine and thin gold involves preliminary disintegration and classification of high-clay sands, feeding prepared pulp material into straight inclined chute of dressing plant into thin-layer flow with flow of rigidly fixed arc-shaped plates, installed with converging clearance on both sides of main flow of pulp, trapping gold with detachable traps of fine gold with straight and rounded walls. Thin-layer flow of pulp, turning from laminar and weakly turbulent rectilinear motion to bend in narrowing gap between arc-shaped plates, installed with displacement along straight inclined chute in staggered order, forms offset layers pulp flow on horizontal and vertical, capable of releasing more coarse particles of valuable components from clay particles and directing them to upper plane of removable trap of fine gold of one of sides. Then pulp flow strikes against cap and arc-shaped plate of said side, undergoes secondary bending, mixing, turbulence of pulp flow occurs, which results in release of additional part of valuable components from clay particles and direction to removable trap of fine gold of another side, where already finer particles of valuable components fall into cells of hexagonal shape of detachable trap of fine gold, are deposited on bottom of housing detachable trap of fine gold. Method is implemented by means of a system for gold extraction, including an installation for preliminary disintegration and classification of high-clay sands, transfer elements and elements of feeding pulp into dressing unit into thin-layer flow in form of straight inclined chute with sides and rigidly fixed arc-shaped plates, installed with converging clearance on both sides of main flow of pulp at bottom, detachable traps of fine gold with straight and rounded walls. Arc-shaped plates are installed with displacement along straight inclined chute in staggered order, forming bends of pulp flow from one side of straight inclined chute to another side and vice versa. End parts of arc-shaped plates are interfaced with recesses in bottom of straight inclined chute, in which there are detachable traps of fine gold with possibility of vertical movement and are made detachable in form of housing and cassettes with cells of hexagonal shape. At bottom of straight inclined chute there are mats.EFFECT: high efficiency of extraction of fine and thin particles of valuable components in thin-layer flows, reduced losses of valuable components.2 cl, 4 dwg

Device for collection of aerosol particles // 2600256
FIELD: gas industry.SUBSTANCE: invention relates to cleaning gases using electrostatic effect, in particular, to capture aerosol particles. Device comprises installed with a gap relative to the conducting earthed shell electrically charged electrode made in the form of an electrically conducting shell with a smooth cylindrical surface with a radius of the surface curvature of not less than zero. Earthed electroconductive shell is made in the form of a mesh with the cell size of not less than 0.1 µm. Gap between the conducting earthed shell and the outer surface of the electrode is filled with a porous non-conductive hydrophobic material with the specific resistance of not less than 1010 Ohm/m and the cross-section size of open pores of not less than 0.1 µm.EFFECT: higher efficiency of collection of aerosol particles.1 cl, 1 dwg

ethod of flotation of sulphide copper-nickel ore // 2600251
FIELD: metallurgy.SUBSTANCE: invention relates to concentration of ores of nonferrous metals and can be used in concentration of sulphide copper-nickel ores. Method involves crushing and conditioning of ore in presence of sulfhydryl collector - potassium butyl xanthogenate and foaming agent, extraction of nickel and copper minerals into collective concentrate and minerals of waste rock in final tailings. In addition to collector butyl xanthogenate bis(2,2,2-trifluoroethyl)ethyl phosphite is introduced, at following ratio, wt%. %: butyl xanthogenate - 50, bis(2,2,2-trifluoroethyl)ethyl phosphite - 50.EFFECT: technical result is increase of technological parameters of flotation process and wider range of used flotation reagents.1 cl, 1 tbl, 1 ex

ethod of flotation // 2600135
FIELD: mining.SUBSTANCE: invention relates to beneficiation of minerals and can be used for flotation of gold-bearing ores. Proposed method comprises conditioning of initial raw material with reagents with at least a foaming agent, introduction of supersaturated steam and gas into pulp in form of aerosol jet and removal of separation products. Before introduction into pulp of steam and gas, ice is added thereto in amount of 25.0-45.0 kg/m3. Supersaturated steam is introduced into gas flow in a pulsed manner with frequency equal to 160-200 Hz.EFFECT: increased extraction of valuable components into commercial product and its quality in concentration of ores by flotation.1 cl, 1 dwg, 2 tbl

ethod for beneficiation of oxidised ferruginous quartzites // 2599123
FIELD: chemistry.SUBSTANCE: invention relates to beneficiation of minerals by reverse cationic flotation and can be used in beneficiation of oxidised ferruginous quartzites. Method for beneficiation of ferruginous quartzites comprises grinding ore, reverse cationic flotation of silicate-containing minerals by a stage process in presence of a modifier, operation for attrition of floatation tail of first floatation stage in front of second main floatation stage. Foam products of first and second flotation stages are separately subjected to attrition in attrition system in presence of modifier and directed for recleaning silicon dioxide. Flotation of silicate-containing minerals during beneficiation of oxidised ferruginous quartzites is carried out at pulp density less than 32 % of solid. Depressant for iron-containing minerals used is a non-ionic polymer. Cationic collector for silicate-containing minerals used is a reagent having high sorption capacity on solid phase, based on diether amin. Foaming agent for silicate-containing minerals used is a reagent based on polyalkylene glycol.EFFECT: technical result is obtaining standard iron concentrate and increased extraction of same metal in concentration of oxidised ferruginous quartzites.1 cl, 1 dwg, 1 tbl, 1 ex

ethod of flotation concentration of oxidised iron minerals // 2599113
FIELD: chemistry.SUBSTANCE: invention relates to beneficiation of minerals by reverse cationic flotation and can be used in concentration of oxidised iron-bearing ores with low magnetic susceptibility, mainly goethite. Method of flotation concentration of oxidised iron minerals includes introduction of modifiers, depressant - non-ionic polymer, collector and foaming agent, reverse cationic flotation with extraction into foam product of minerals of waste rock and iron concentrate in floatation tail. Reverse cationic flotation is performed in two stages. First flotation of calcite is performed, then flotation of silicate-containing minerals from floatation tail of calcine flotation cycle. For flotation calcite, modified collector based on primary amines of fatty acids is used. For flotation of silicate-containing minerals, a combination of primary monoamine and diether amin is used in following ratio of components: (1÷3):(0.1÷1). Prior to recleaning flotation operation of calcite, pulp is heated to temperature not lower than 40 °C.EFFECT: technical result is obtaining standard iron concentrate and increased extraction of same metal in concentration of ores containing oxidised iron minerals.1 cl, 1 dwg, 1 tbl, 1 ex

ethod of processing phosphorous magnetite ore // 2599068
FIELD: technological processes.SUBSTANCE: invention relates to hydrometallurgical processing of phosphorous magnetite ores. Method of processing involves production of crude magnetite concentrate with grain size of 100 mcm by magnetic separation. Then its bioleaching is performed using biocomplex of acidophilic thione microorganisms Ac. ferrooxidans and Ac. Thiooxidans and one-stage wet magnetic separation of bioleaching cake to produce high-quality magnetite concentrates, nonmagnetic fraction and bioleaching solution with removing of more than 40 % phosphorus, 80 % copper, 90 % zinc into it.EFFECT: increased efficiency of processing phosphorous magnetite ores of complex composition with simplification and cheapening of processing technology using an environmentally safe method, improved quality of end products and reduction of processing costs; method is resistant to change in composition of raw materials.6 cl, 1 tbl, 1 ex

ethod of dressing gold-containing products // 2598668
FIELD: metallurgy.SUBSTANCE: invention relates to dressing minerals and can be used in gold mining and non-ferrous metallurgy in dressing products containing free particles of gold, silver, platinum. Method of dressing gold-containing products involves feeding initial supply and water into the operation of hydraulic classification in a hydraulic cyclone, extraction of discharge and sands, return of sands into the operation of hydraulic classification, stop of initial supply feeding after a preset time interval, feeding water and sands of the hydrocyclone into the operation of hydraulic classification to reach in the sands a given degree of concentration of noble metals, production of the dressed product in the form of sands of the hydrocyclone. Sands of the hydrocyclone after stop of initial supply feeding during circulation are subjected to screening with removal to the oversize fraction of coarse particles of waste rock.EFFECT: provided is higher degree of concentration of noble metals in sands of the hydrocyclone due to removal from the circulating product of coarse particles of waste rock, as well as higher efficiency.1 cl, 2 dwg, 1 tbl

ethod of conditioning cyanide-containing products prior to floatation extraction of nonferrous and noble metals // 2598663
FIELD: mining industry.SUBSTANCE: invention relates to beneficiation of minerals, and more specifically to extraction of nonferrous and noble metals from tailings of planning sulphide ores and their beneficiation products. Method of conditioning cyanide-containing products prior to floatation extraction of nonferrous and noble metals comprises conditioning and flotation of valuable components. Conditioning cyanide-containing products is carried out using aldehydes or ketones, preferably formaldehyde. Treatment with aldehydes or ketones, preferably, formaldehyde, can be carried out in a wide range of pH (1.8-13.0) and temperature (5-70 °C). Duration of treatment with aldehydes or ketones, preferably, formaldehyde, must not be less than 5 seconds. Consumption of aldehyde or ketone, preferably, formaldehyde, depends on composition of liquid phase.EFFECT: technical result is increased extraction of nonferrous and noble metals, as well as reduced content of free cyanide.4 cl, 2 tbl

Process line for processing ash-slag wastes // 2598613
FIELD: recycling.SUBSTANCE: invention relates to processing of combustion products and can be used at thermal power plants and boilers operating on coal fuels. Process line for processing ash-slag wastes comprises a proportioning feeder of ash-slag wastes connected to a mixer tank connected to a source of a diluting medium of the supply line, a classifier of ash-slag particles, a means to discharge dewatered masses of the classified fractions of particles. Line is equipped with a recirculating tank, which is connected to the outlet of the mixer by means of a pipeline equipped with the first pump. Recirculation tank drain branch pipe is arranged at its top edge and connected with the mixer. Classifier comprises at least two coaxial cylindrical perforated shells arranged in a cylindrical housing coaxially to its axis of rotation and rigidly fixed in it. Diameter of perforation holes decreases from the inner to the outer shell. Classifier housing is made with the possibility of its rotation. Recirculation tank outlet branch pipe is arranged at its bottom and connected with the cavity of the inner shell of the centrifugal classifier, along which a perforated pipe passes connected to the water source. Classifier outlets are connected with inlet branch pipes of tanks accumulating separate fractions of ash, each of which is equipped with a drain branch pipe arranged at its top edge and connected to the inlet of a settling tank, the outlet of which by means of the second pump with the first water line is connected to the inlet of a return water tank, the outlet of which by means of the third pump with the second water line is connected with the mixer.EFFECT: technical result is expansion of range of fractionation of ash-slag wastes by the particle size, as well as reduced pollution of the environment.8 cl, 1 dwg

System for monitoring and controlling medical-biological parameters of air in dental installation // 2598387
FIELD: medicine; hygiene.SUBSTANCE: invention relates to methods and means of monitoring and controlling medical-biological parameters of air in dental plants and can be used independently, as well as in systems of air cleaning and sterilisation of medical facilities for various purposes. System comprises a unit of actuators, consisting of a source of ultraviolet radiation, system of corona electrodes and system of precipitation electrodes, fan with electric drive, input and output protective grids in air duct and a control unit consisting of circuit for switching on source of ultraviolet radiation, circuit for switching on device. Control unit includes electric drive control circuit of fan, channel for controlling operation of corona electrodes, channel for controlling operation of precipitation electrodes and channel for monitoring and controlling operation of ultraviolet radiation source. Structure of system includes a display unit, consisting of a first "Above normal" light indicator, second "Normal" light indicator, third "Low" light indicator, acoustic detector, inputs of which are first, second, third and fourth inputs of indication unit and are connected to fifth, sixth, seventh and eighth inputs of control unit respectively.EFFECT: higher degree of efficiency of disinfection and filtration of dust from air.1 cl, 1 dwg

Electric filter // 2597397
FIELD: gas industry.SUBSTANCE: invention relates to electrical gas cleaning from suspended particles in different industries. Device comprises precipitation and corona-forming electrodes. Needle corona elements are made from material subjected to single-sided plastic deformation.EFFECT: higher degree of purification of gases due to reduced voltage discharge.1 cl, 4 dwg

Device for separating fractions // 2597012
FIELD: mining.SUBSTANCE: invention relates to mining industry and diamond processing industry. Device for separating fractions contains a loading bunker that is connected with mechanical crushing device of large units connected to upper section of the box with attached metal activator in the form of a high voltage source, vessel for receiving fractions. Box is located vertically and is equipped with two additional sections. One section has an activator of nonmagnetic metals in the form of a high voltage source attached to it, and the other - an activator of silicon carbide in the form of a high voltage source. Lower parts of each section have openings and a separating element to separate appropriate fractions located opposite the opening on the side of the box. Upper section of the separating element is a magnet for magnetic separation of metal, middle section is an electrode for removal of non-magnetic metal, and bottom section is a magnet and electrode for separation of silicon carbide or rock.EFFECT: improvement of technological process, extraction of diamonds from wastes of diamond production.1 cl, 1 dwg

ethod of controlling flotation process // 2596841
FIELD: mining.SUBSTANCE: invention relates to field of minerals and may be used for control of flotation to increase its efficiency. Method of production of flotation process involves controlling density of initial supply, air flow in chamber and pulp level in flotation machine. Additionally ore consumption is measured, intensity of noise and active power of mill motor, flow rate and density, pulp aeration in air flow rate, water consumption into floatation chutes, reagent consumption, levels of commercial product in flotation machine and technological sumps, opening degree of process valves, volume of industrial recleaning, pH and temperature of pulp. Obtained data is processed and degree of effect of each parameter, such as ore consumption, noise intensity and active power of mill motor, flow rate and density, pulp aeration in air flow rate, water consumption into floatation chutes, reagent consumption, levels of commercial product in flotation machine and technological sumps, opening degree of process valves, volume of industrial recleaning, pH and temperature of pulp into technological process in flotation machine. Then from all measured parameters affecting technological process, parameters are selected with coefficient of linear pair correlation is more than 0.18 and determined by regression analysis relationship between which influence parameters and technological process in flotation machine. Value of content of useful component in product of flotation is calculated by mathematical relation: Y=A0+A1X1+A2X2+…AnXn, where A0 is free member; A1, A2…An are equation coefficients; X1, X2…Xn are impacting process parameters, obtained magnitude is analysed and, if mismatching to specified process parameters, corrected control effects on control technological parameters so that deviation between preset and actual value of content of useful component is not more than 0.2 % relative.EFFECT: higher quality control of foam flotation enrichment by taking into account all influencing controlled parameters of process and quality control of output product so that deviation from preset quality is minimum.1 cl, 6 dwg, 3 tbl

ethod for gravity concentration of sands of placers with high content of fine and thin gold // 2596156
FIELD: mining.SUBSTANCE: invention can be used in developing natural and technogenic gravel deposits of mineral deposits with high content of fine and thin gold. Method for gravity concentration of sands of placers with high content of fine and thin gold is performed in alignment of forward feed pulp with vibration jigging by means of installation, including a board, rigidly connected without any gaps with installed in series with stepped reduction by limiters relative to horizontal line and provided with artificial foundation with horizontal perforated base of jigging compartments, system for loosening bed of jigging material in form of mechanical vibrator, system for feeding water into jigging compartments, accumulation in lower part of jigging compartments of jigging material and its periodic unloading. Forward feeding of pulp in sold to liquid ratio of 1:4 is carried out successively into working zones of jigging compartments with artificial saddles in form of crushed rock with size of lumps from 10 to 30 mm and layer thickness of up to 100 mm, by cascade flow through U-shaped slots whose width is at least twice greater than maximum size of piece of rock in pulp, in upper part of limiters on upper level of artificial foundation and mounted between jigging compartments to create extra turbulence. While filling artificial foundation with jigging material with a period of its accumulation of 10-15 minutes. vibration-shaking is carried out by mechanical vibrator system for bed loosening, arranged on sides of apparatus, equipped with elastic supports for 3-5 minutes without stopping pulp feed. After next unloading of jigging material, jigging compartments are filled with water.EFFECT: higher efficiency of extraction of fine and thin gold from primary materials of placers without additional disintegration of sands, including high-clay, higher reliability.1 cl, 2 dwg

Device and method for processing garbage packed into bags // 2596129
FIELD: technological processes.SUBSTANCE: method of processing bagged refuse includes pneumatically conveying filled refuse bags along a conduit using airflow and opening bags during pneumatic conveyance. Apparatus for processing bagged refuse includes a conduit, bag opening means arranged to open refuse bags during pneumatic conveyance along conduit. Bag opening means contain at least one protruding element, which protrudes into channel for conveyance of bagged refuse during pneumatic transfer of latter. Protruding element is equipped with means for removal of protruding element when pressure difference on protruding element exceeds a certain level or when force applied to protruding on side of refuse, exceeds a certain level. Protruding element is equipped with scraper seal.EFFECT: use of present group of inventions provides high carrying capacity.17 cl, 14 dwg

Process and apparatus for treatment of incinerator ash // 2595747
FIELD: recycling.SUBSTANCE: invention relates to methods and apparatus for processing of ash combustion products for safe and cheap recycling. Method comprises steps of collecting ash from an incinerator, feeding collected ash and additional feed material to a gasification/vitrification reactor, vitrifying ash and additional feed material in gasification/vitrification reactor, to form a slag of molten material, allowing slag to flow from gasification/vitrification reactor and solidify outside gasification/vitrification reactor, gasifying volatile components in ash and additional feed material, feeding air to secondary combustion zone in gasification/vitrification reactor, and burning synthesis gas generated in gasification/vitrification reactor in secondary combustion zone to augment thermal environment of incinerator.EFFECT: improved thermal environment of incinerator.30 cl, 3 tbl, 4 dwg

Floatation plant for purifying waste water // 2595680
FIELD: treatment plants.SUBSTANCE: invention relates to water treatment. Flotation waste water treatment plant comprises housing 1 with partitions 12, 14, 16, purified water chamber 21, a device for initial water saturation with air bubbles, which consists of pump 24, ejector 27 and a pneumohydraulic dispersant. Ejectors 27 are made cylinder-conic. Foam removing device is presented in the form of self-priming unit 4 accommodating screw 5 with the ratio of diameter to length from 1 to 3÷9. On the outer side of housing 1 there is foam chute 10 arranged inclined from 5 to 30° relative to the horizon.EFFECT: invention increases efficiency of purifying waste water.8 cl, 1 dwg

ethod for flotation separation of collective zinc-pyrite concentrates // 2595022
FIELD: metallurgy.SUBSTANCE: invention relates to beneficiation of minerals and can be used for flotation of polymetallic and copper-zinc ores. Method for flotation separation of collective zinc-pyrite concentrates involves obtaining bulk zinc-pyrite concentrate from sulphide ores, carried out in an alkaline medium formed by lime, steaming and pulp conditioning with copper sulphate, xanthate and foaming agent, flotation of zinc minerals into a foam product. Foam product of primary zinc flotation arrives into cycle of additional grinding, including operation of classification and regrinding. Lime is fed for grinding. Crushed material is fed into operation of thickening and washing or in operation of mechanical activation and then in operation of thickening and washing. Condensed product arrives into operation of running and then in cleaner operation.EFFECT: technical result is higher efficiency and intensification of process of separation of zinc-pyrite concentrates.1 cl, 2 dwg, 1 tbl, 3 ex

Pneumatic flotation machine of airlift type // 2595021
FIELD: mining.SUBSTANCE: invention relates to flotation refining of minerals and can be used in coal industry, ferrous and nonferrous metallurgy at refining plants, as well as in refining of non-metallic material. Pneumatic flotation machine of airlift type includes a loading device, a chamber divided into two compartments, inclined foam chute, unloading device and aerator positioned in the bottom part of the chamber. Chamber is a container with rectangular cross-section, wherein its vertical sidewalls are parallel to each other, and parts of front and rear walls have an inclination towards foam chute. Inclined part of the front wall begins at chamber bottom and ends at the level of loading window, and rear wall incline begins above the level of loading window. Chamber is separated into a transport zone and zone of flotation by inclined composite partition consisting of three parts. Upper fixed part of the partition is arranged in parallel to the inclined part of the rear wall, and top edge of this part of the partition is arranged at the level of foam chute threshold. Lower fixed part of composite partition is parallel to the vertical part of the rear wall, Upper edge of the lower part of the partition is arranged at the level of the lower part of loading window, and lower edge of this partition is arranged with clearance above chamber bottom. Upper edge of the middle rotating part of partition is pivotally connected to the lower edge of the upper part of composite partition, and lower edge of the middle part of the partition is arranged at the level of the lower part of loading window. Chamber is additionally equipped with two grids arranged in the area of flotation. Lower grid is fixed at the level of upper edge of lower part of composite partition, upper grid is two-row and is fixed at the movement mechanism with possibility to move in the area of flotation. In upper part of the machine, in its foam layer, with clearance relative to upper wall of the chamber additional fixed partition is installed, lower edge of which is located below the threshold of foam chute, and in foam layer of the machine a gate is installed with possibility of vertical movement interfaced with upper part of fixed partition.EFFECT: technical result - increase of flotation efficiency by increasing extraction of useful component to concentrate.1 cl, 3 dwg

ethod of producing metal-containing valuable substances from metal-containing valuable substances of suspension mass flow // 2594916
FIELD: metallurgy.SUBSTANCE: invention relates to a method of production metal-containing valuable substances from a suspension containing valuable metal substances. Method of producing metal-containing valuable substances from a suspension containing valuable metal substances, wherein the initial suspension is pressurised in at least one pumping device, then fed along at least one supply pipeline via at least one nozzle device into at least one flotation chamber. In the flotation chamber the metal containing valuable substances are separated. After passing through the pumping unit and before entering the nozzle device, gas is supplied into the suspension with valuable metal-containing substances so that the pressurised suspension is filled with the gas. Method is implemented using a device comprising at least one pumping unit for supply of initial suspension with metal containing valuable substances through the supply pipelines and nozzle device into at least one flotation chamber. Between the pumping and the nozzle devices there is located at least one device for injection of gas into the suspension.EFFECT: technical result is increased efficiency of floatation.14 cl, 2 dwg
ethod for processing industrial wastes of metallurgical and mining industry // 2594544
FIELD: metallurgy.SUBSTANCE: invention relates to processing of industrial wastes of metallurgical and mining industries. Method involves leaching at presence of oxidant and trivalent iron ions. Before leaching polygradient air-mechanical separation of wastes is performed with dividing into fractions containing and not containing useful metals. It is followed by magnetic separation of fraction containing useful metals. Then, separated leaching of magnetic and nonmagnetic fractions is performed by mechanical activation with simultaneous hydrodynamic, electrochemical and chemical action. After leaching products are separated into solid and liquid parts with subsequent physicochemical treatment of the liquid part with hydrodynamic, electrophysical and electrochemical action, solid part is subjected to chemical-thermal treatment, followed by returning it to the non-magnetic fraction leaching stage.EFFECT: reduced environmental load on the environment.1 cl, 1 ex

ethod of sodium chloride flotation // 2594424
FIELD: chemistry.SUBSTANCE: invention relates to flotation separation of sodium chloride from mixtures thereof with chloride and/or potassium sulphate salts, magnesium, calcium, for example, for separation of sodium chloride from salts of salt lakes or potassium ores. Method envisages mixture of salts, preparing suspension, treating suspension with reagent, sodium chloride collector, sodium chloride flotation with extraction of sodium chloride into foam product, separate condensation of foam and chamber flotation products in condensers. Collector is alkyl morpholines non-aqueous mixture with hydrocarbon radical length from C9 to C22 and liquid non-hydrocarbon reactant at ratio of alkyl morpholin:non-polar reagent 1:0.03÷1:3.0 at mixture temperature from 15 °C to 80 °C.EFFECT: technical result is reduction of reagent-collector consumption, reduction of its accumulation in salt solution and improvement of condensation process parameters.5 cl, 2 tbl

System for deep drying, cleaning and recovery of liquid dielectrics // 2594412
FIELD: treatment plants.SUBSTANCE: invention relates to drying, cleaning and recovery of liquid dielectrics, preferably, transformer, turbine, aviation and hydraulic oil. System comprises coarse filter, vacuum dryer, stack of ultra purification filters, buffer tank equipped with level sensors, control electromagnetic valve, and connected to vacuum dryer and stacks of ultra purification electrostatic filters, heater, equipped with oil flow relay and thermostat and connected through coarse filters with vacuum dryer and inlet pump, pressure relay for emergency shutdown of station in case of exceeding permissible pressure upstream of coarse filters, reactor for preparing concentrated solution of additives before electrostatic ultra purification filters, vacuum dryer is made with a foam sensor and level sensors connected with solenoid valve, as well as with oil vapour condenser with a level sensor for emergency shutdown.EFFECT: higher safety, power saving, longer service life of oil.1 cl, 1 dwg

Control of foam flotation // 2594030
FIELD: chemistry. SUBSTANCE: group of inventions relates to control float chambers for separation of substances in the feed material in line of foam flotation for separation of substances, for example minerals containing valuable material from loaded material in form of ore containing empty rock. Method includes a step of executing a control program to maximize foam stability during operation of chamber. Control program includes a step of varying gas flow into in chamber in a specified sequence of steps. Method also includes a step of estimating foam stability at every gas flow rate. There is a step of continuing stepped change of gas flow rate until foam stability reaches peak stability of foam or stays in a predefined range of peak foam stability of chamber. EFFECT: technical result is high efficiency of controlling float chambers. 18 cl, 9 dwg

Plant for oil separation // 2593626
FIELD: oil and gas industry. SUBSTANCE: invention can be used, for example, for the separation of oil in the oil fields, on marine separators for oil refining. Installation for separation of oil contains oil heater and a separator. Separator comprises a housing, the drive and mounted in bearings of rotor conductive, non-magnetic material configured as a drum separator. Drive consists of an electric motor having a stator having an axial portion with a core and a winding, in which the end parts of compound has rendered monolithic tube for cooling the stator and heating oil. Stator further includes a cylindrical portion, wherein the two stator windings are connected in series. EFFECT: technical result of the claimed invention is to increase the energy efficiency of the installation for the separation of oil, reduction in weight and size, increasing reliability. 1 cl, 1 dwg

Device for cleaning oil-containing and waste water // 2593304
FIELD: ecology; processing and recycling of wastes. SUBSTANCE: invention relates to water treatment systems and can be used for cleaning oil-containing and waste water. Device for cleaning oil-containing and waste comprises cleaning stages, connected in series along flow of purified water and separated by partition walls 7, pump, aeration units 12, 13, 14, feed pipeline for water to be purified 15 and outlet pipeline for purified water 16. Each cleaning stage consists of floatation reactor 1, 2, 3 and floatation separator 4, 5, 6, separated by partition 8. Number of pumps 9, 10, 11 and number of aeration 12, 13, 14 corresponds to number of cleaning stages. Output of purified water feed pipeline 15 is connected with bottom part 20 of floatation reactor 1 of first cleaning stage and through pump 9 of first cleaning stage to input of aeration unit 12 of first cleaning stage. Inputs of aerating units 13, 14 of second and next cleaning stages are connected via corresponding pumps 10, 11 with bottom parts 26, 27 of floatation separators 4, 5 of previous cleaning stage. Output of each of aerating units 12, 13, 14 is connected via throttle valve 30 to input of corresponding floatation reactor 1, 2, 3, located in lower point of its bottom 31, 32, 33. Cross section area of bottom 31, 32, 33 of each floatation reactor 1, 2, 3 uniformly decreases in direction from top to bottom. Cross section area of floatation separator 4, 5, 6 is not less than cross section area of corresponding floatation reactor 1, 2, 3. Partitions 8 are configured for free movement of purified water flow in upper parts of floatation reactors 1, 2, 3 and floatation separators 4, 5, 6 of one cleaning stage. Partitions 7 are configured for free flow of purified water in bottom parts of floatation separators 4, 5, 6 and floatation reactors 1, 2, 3 of different cleaning stages. Aeration units 12, 13, 14 are configured to maintain saturation pressure of 0.4 MPa, 0.3 MPa and 0.2 MPa in first, second and third cleaning stages, respectively. EFFECT: invention increases efficiency of cleaning oil-containing and waste water. 4 cl, 1 dwg

Plant for cleaning oil-containing and waste water // 2593257
FIELD: treatment plants. SUBSTANCE: invention relates to water treatment systems and can be used for cleaning oil-containing and waste water. Plant for cleaning oil-containing and waste water comprises at least two cleaning stages, connected in series along flow of purified water and separated from each other by means of partition walls 7. Each cleaning stage consists of a flotation reactor 1, 2, 3 and floatation separator 4, 5, 6 separated by partition 8. Aeration unit 10 of first stage is communicated via pump 9 with bottom part of floatation separator 6 of last purification stage. Output of purified water feed pipeline 11 is connected with bottom part 16 of floatation reactor 1 of first purification stage. First output of aeration unit 10 is connected through throttling valve 26 with input of floatation reactor 1 of first purification stage. Second and subsequent purification stages are equipped with deaeration units 31, 32. Output of each of deaeration units 31, 32 is located in bottom 33, 34 and communicated via throttle valve 26 to input of corresponding floatation reactor 2, 3 and, via pressure regulator 35 with input of upper part of dearation unit 36, 37 of next purification stage. Second output of aeration unit 10 is connected through pressure regulator 35 to input of upper part 36 of dearation unit of second purification stage. Output of each throttling valve 26 is arranged at input of corresponding floatation reactor 1, 2, 3. Cross-sectional area of bottom of each floatation reactor 1, 2, 3 uniformly decreases in direction from top to bottom. Cross-sectional area of floatation reactor 4, 5, 6 is not less than cross-sectional area of corresponding floatation reactor. Partitions 8, separating floatation reactors 1, 2, 3 from floatation separators 4, 5, 6 are configured for free movement of purified water flow in upper parts of floatation reactors 1, 2, 3 and floatation separators 4, 5, 6 of one purification stage. Partitions 7, separating purification stage, are configured for free flow of purified water in bottom parts of floatation separators 4, 5, 6 and floatation reactors 1, 2, 3 of various purification stages. Aeration unit 10 is designed to maintain saturation pressure is 0.3-0.6 MPa. Deaeration units 31, 32 can maintain saturation pressure of 0.1-0.3 MPa. EFFECT: invention increases efficiency of cleaning oil-containing and waste water. 7 cl, 1 dwg

ethod for magnetic control of fine loose medium ferric impurities // 2593155
FIELD: ceramic industry. SUBSTANCE: invention relates to magnetic separation and can be used in various industries, particularly in production of glass and ceramics, for analysing crude loose media for content of undesirable ferruginous impurities having magnetoactive properties (ferric impurities): their weight ratio (concentration). Method of determining content of loose medium ferric impurities comprises repeated operations of selecting from a sample of loose medium mass the material containing ferric impurities, by mutual displacement of the sample and magnetic system, as well as making additional receiving magnetic exposure on the extracted mass material to separate ferric impurities fractions contained in the material and involved particles fractions of analyzed medium. Mutual displacement of the sample and magnetic system is performed at limited speed, which provides efficient capture of ferric impurities from the sample. Additional receiving magnetic separation of separated material fractions is performed by wet magnetic separation of each operating mass of released material via wetting them in the liquid as dispersion medium to obtain corresponding suspensions, subjected to magnetic effects. Speed of the sample displacement, for example, for use of magnetic elements Nd-Fe-B is set from the condition: where: a is an empirical parameter which characterises used magnetic system (in traditional using magnetic elements Nd-Fe-B, in particular, with diameter of 25 mm and thickness of 10 mm: a≅0.6 N/mm), ρ -density substances of a ferric particle, x-distance of the ferric particle moving from a magnetic system pole. EFFECT: technical result is increase of accuracy of monitoring ferric impurities of loose medium. 1 cl

ethod of processing refractory pyrite-arsenopyrite-pyrrhotite-antimonite gold ore (versions) // 2592656
FIELD: metallurgy. SUBSTANCE: method of processing refractory pyrite-arsenopyrite-pyrrhotite-antimonite gold ore (versions) refers to metallurgy of noble and heavy nonferrous metals. Substance of invention consists in fact that in all versions pyrrhotite concentrate, pyrite-arsenopyrite concentrate antimonite concentrate and tails collective flotation are obtained. At that, method involves production of crushed ore or tailings of gravity, directed to collective flotation. Method applies magnetic separation. EFFECT: technical result is increased through extraction of gold, providing efficient mineral raw material, reduction of capital and operating costs by creating technology for processing refractory pyrite-arsenopyrite-pyrrhotite-antimonite gold-bearing ores. 12 cl, 12 dwg, 4 ex

ethod and apparatus for particle separation // 2592306
FIELD: mining industry. SUBSTANCE: group of inventions relates to the dynamic separation of particles such as those resulting from crushing and grinding extracted minerals or recycled materials. According to a method a fluid with dispersed particles is subjected to a centrifugal action in at least two successive stages in order to separate particles having a different terminal velocity. For this purpose, there is a regulation step carried out in an intermediate position between the stages. Fluid coming from the first stage enters the second one axially. Regulation step comprises the introduction of a fluid between said stages. Introduced regulation fluid is provided by a rotational velocity component. Apparatus comprises at least two stages wherein a fluid with the particles dispersed therein is subjected to a centrifugal action in order to separate particles having a different terminal velocity. It comprises operating regulation means in an intermediate position between the stages. Said means comprise a channel for introducing a regulation fluid at an intermediate location between the separation stages and an intermediate mixing header. Said mixing header is located between the separation stages. Channel for introducing a regulation fluid is arranged tangentially with respect to intermediate mixing header. EFFECT: technical result is higher separation efficiency and reliability. 8 cl, 13 dwg
 
2551307.
Up!