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)
Pneumatic flotation machine // 2614170
FIELD: mining.SUBSTANCE: pneumatic flotation machine of reactor-separator type comprises an aerator, a reactor, a separation chamber, a foam settler, a foam remover regulator, a splitting device and a device to output stems. Flotation machine is equipped with an external foam settler located between the separation chamber and the aerator to improve the gas content in the under foam zone, which is a shell with a porous inner surface.EFFECT: reduction of the mechanical removal of particles of non-recoverable minerals with foam.1 dwg

ethod for complex ash processing of heat power plants waste piles and plant for complex ash processing of heat power plants waste piles // 2614003
FIELD: power industry.SUBSTANCE: complex ash processing method of heat power plants waste piles includes the separating of ash pulp into the coarse and fine fractions, flotation, and magnetic separation to obtain the target products. The coarse fractions of ash are separated on the screens for using in the production of concrete mixtures. Ash fine fractions and subjected to the main and cleaner flotation, filtration and drying, to obtain a carbon concentrate. The separated at the primary flotation the tail fractions are subjected to magnetic separation and drying to obtain magnetite and silica-alumina concentrate. The aluminosilicate concentrate is grounded in the ball mill upto the fine fraction, filtered and dried. During the primary flotation the collector-kerosine and pine oil is used as the blowing agent. The cleaner flotation is carried out on the return water. The method is carried out on the complex ash processing plant of heat power plants waste piles, containing the means for separating the ash pulp into the coarse and fine fractions, as well as flotation and magnetic separation to obtain the target products. The ash pulp separator is designed as the screen, which outlet of the coarse fraction is connected to the inlet of the first section for the production of concrete mixtures. The screen outlet of the fine fraction is connected to the first flotation machine inlet for the main flotation, the first outlet of which is connected through the second machine of the cleaner flotation, filtration and drying units with the the second section inlet for the coal concentrate storing. The second outlet of the first flotation machine is connected with the first inlet of magnetic separation unit, the first outlet of which is connected through the drain silo with the third section inlet for the magnetite concentrate storing. The second outlet of the magnetic separation unit is connected through the thickener and drying units with the third section inlet for the aluminosilicate concentrate storing. The drain silo outlet of water is connected to the second inlet of the magnetic separation unit.EFFECT: fullest recovery from the wet ash waste piles of power heating plant of the target useful products in the form of ash coarse fraction for the concrete mixtures production, carbon for using as a boiler fuel, magnetite concentrate as a raw material for the metal industry and active aluminium silicate additive for construction materials productions.5 cl, 1 dwg, 1 tbl 2 ex
ethod for enrichment polymetallic ores containing nickel, copper and iron sulfide minerals // 2613687
FIELD: mining.SUBSTANCE: method of enrichment of polymetallic ores comprises grinding ore raw components, collective flotation of sulfide minerals in the presence of sulfhydryl collectors such as xanthate and aeroflot to obtain a collective sulphide concentrate with froth product and rock tailings with flotation tail. The obtained collective sulfide concentrate is desorbed succesively in two stages. At the first stage of desorption sodium sulfide is pumped into the slurry, at the second stage - activated charcoal is pumped in an amount to provide a weight ratio of the said pumped sulfhydryl collector at the step of collective flotation collector, sodium sulfide and carbon in the range of 1:(4-18):(4-18). Then collective sulfide concentrate is regrinded untill there are at least 80% of particle of size grade under 30 microns, processed with alkaline of reagent regulator medium (pH to at least 11.5 units.) and transferred to a selective copper-nickel flotation using fresh and/or cleared water carried out in several stages. Meanwhile the collective sulfide concentrate pulp with the desorbed sulfhydryl collector is pre-aerated at first and then flotation of copper minerals is carried out in the presence of copper mineral collector of the dithiophosphates group and frother, with sulfidization of copper minerals with sodium sulfide, and activation via pumping in the pulp of a sulfidizating agent(s)-aktivator(s) of flotation of copper minerals with acidic properties until the pH value of the pulp level achieves 10÷10.5 units. At the beginning of each subsequent flotation stage pH is reduced by 1÷1.5 units until pH value achieves the level as at the stage of discharge of the finished copper concentrate of 5.5÷8 units. Flotation tail of the selective copper-nickel flotation is a nickel-pyrrhotite product which is regrinded prior flotation separation until there are at least 80% of particle of size grade under 30 microns. Release of nickel iron sulphides with high nickel content is performed in the presence of dimethyldithiocarbamate and a sulfhydryl collector at the weight ratio of (3÷15):1. PH values at the stages of separating nickel iron sulfide from low nickel pyrrhotite are maintained at the range from 9.5 to 11 units. Flotation tail at the first separation stages with low nickel contents is subject to control separation and low nickel pyrrhotite is obtained with the flotation tail. Flotation tail at the subsequent separation stages is transferred to the control flotation to obtain a pyrrhotite concentrate with froth product.EFFECT: increase in the degree of separation of the collective sulphide concentrate.1 tbl, 2 ex

Installation for filtration of microparticles, contained in gaseous combustion products, and/or exhaust gases and corresponding discharge circuit // 2613654
FIELD: wastewater treatment plants.SUBSTANCE: group of inventions relates to devices for filtration, prior to discharge of microparticles contained in exhaust gases and/or gaseous combustion products into atmosphere. Installation comprises a casing, which can pass along the discharge circuit for gas flow. Inside the casing there is a channel, along which the flow can pass on a perforated plate, having negative electric potential for radiation and scattering of electrons in the channel, which can be connected with particles (B) of the contaminant, carried with the flow, being the microparticles, passing a negative charge to them. Inside the channel downstream behind the perforated plate there is at least one accumulation plate, having positive electric potential, which is intended to attract and retain electrically charged particles (B) on the accumulation plate. Plant includes at least one current-conducting thread, which has negative electric potential, turned aside and is located near at least one corresponding hole in the perforated plate, as the main source of radiation and scattering of electrons, which can be connected with particles (B) carried with the flow, in fact near the place of their passage through the hole.EFFECT: higher filtration efficiency, operational reliability.15 cl, 7 dwg

ethod of controlling direction and density of erosion on collecting electrode for wet electrostatic filter // 2613650
FIELD: manufacturing technology.SUBSTANCE: invention relates to cleaning gases and air, in particular, to wet electrostatic filters. Collecting electrode for a wet electrostatic filter is made from an electrically conducting, corrosion-resistant, heat-resistant and spark-resistant composite material containing a woven carbon fibre in a thermo-reactive polymer with a cross-linked structure. Direction and density of erosion on the electrode is controlled by controlling the weaving pattern of the carbon fibres and thickness of the carbon fibres fabric. Higher density of the weaving pattern of the carbon fibres increases the density on the electrode erosion. Increased thickness of the carbon fibres creates erosion lines with a smaller number of bends and branches.EFFECT: higher reliability due to increased resistance to arcing.1 cl, 6 dwg
ethod for back water preparation during flotation // 2613401
FIELD: chemistry.SUBSTANCE: method for back water preparation during flotation involves dosing of reagents for back water neutralisation, heavy metals precipitation, and sulfhydryl collectors for electrochemical parameters of the back water. Potential difference between two electrodes, one of which is molybdenum and the other is either argentite, or cadmium, or tin, or antimony, is measured in the water or pulp flow. Based on the measured potential difference deviation of least one bimetal pair from the predetermined optimum value, reactant supply is adjusted. To neutralise the back, an acid, such as sulfuric acid, or alkali, such as lime milk, is used, dose is adjusted by the potential difference of a bimetallic pair including molybdenum and cadmium electrodes, so that an increase in the potential difference Δ(Cd-Mo) increases the dosage of alkali and a decrease in the potential difference Δ(Cd-Mo) reduces the dosage of alkali. Hydrosulphuric acid salts and its derivatives, for example, Na2S, NaHS are used as a reagent for heavy metals precipitation, wherein the dose is adjusted out based on the potential difference of a bimetallic pair including argentite and molybdenum electrodes, so that an increase in the potential difference Δ(Ag2S-Mo) increases the reagent dosage, and a decrease in the potential difference Δ(Ag2S-Mo) reduces the dosage. Bluestone is used as a reagent for sulfhydryl collectors precipitation with dose adjusted based on the potential difference of a bimetallic pair including argentite and molybdenum electrodes, so that an increase in the potential difference Δ(Ag2S-Mo) reduces the dosage, and an increase in the potential difference Δ(Ag2S-Mo) reduces the dosage. In case of simultaneous treatment of water to neutralise acidity via dosing alkalis and heavy metal deposition using hydrogen sulfide salts and its derivatives, three metal electrodes are used: argentite, molybdenum and antimony. Alkali feed is adjusted, so that an increase in the potential difference Δ(Sb-Mo) increases the dosage of alkali and a decrease in the potential difference Δ(Sb-Mo) reduces the dosage of alkali. Hydrogen sulfide salts and its derivatives flow is adjusted out so that an increase in the potential difference Δ(Ag2S-Mo) increases the reagent dosage, and a decrease in the potential difference Δ(Ag2S-Mo) reduces the reagent dosage.EFFECT: improved accuracy and reliability of reagent supply at an optimal level, consumption of which is adjusted based on the measured electrochemical potential of the back water.7 cl, 12 dwg, 8 tbl, 3 ex
ethod of selective flotation adjustment // 2613400
FIELD: technological processes.SUBSTANCE: selective flotation process adjustment method includes the depressing reagents dosage according to the electrochemical parameters of the pulp. The potential difference between molybdenum and cadmium electrodes is measured in the pulp flow, and according to the measured potential difference of the bimetallic electrode pair from the specified optimum value, correct the depressing agent feeding so, that at the increase of potential difference reduce the reagent dosage, and at the potential difference decrease increase the dosage of the reagent. The alkalies such as lime milk are used as the zinc sulphides and iron depressant. The silicon contained depressants, such as sodium fluorosilicate are used as a dead rock depressant. The sulfoxide compounds, such as zinc sulfate are used as the zinc sulfide depressants. The sulfurous acid salts and its derivatives, such as sodium hydrosulfite are used as the iron sulphide depressant. At scheelite ores flotation, using the steaming according to Petrov's method of the fatty-acid collector desorption from the minerals surfaces, additionally perform the calcium salts dosage, such as CaCl2, which flow rate is adjusted based on the measured potential difference between the molybdenum and cadmium electrodes. At flotation of copper-molybdenum ores, using environment controller, such as sodium carbonate; sulfhydryl collectors - xanthate, aeroflot, or its derivatives; depressants, such as sodium sulfide and apolar collector, such as diesel fuel, in the ore cycle the reagents dosage is corrected according to the measured potential difference between the molybdenum and cadmium electrodes.EFFECT: reliability and accuracy increase of the depressing reagents dosage control.7 cl, 18 dwg, 7 tbl, 4 ex
Cold plasma generator // 2613213
FIELD: electricity.SUBSTANCE: device comprises a casing, an isolated electrode in the form of the plate of the insulating material with the metallic conductor and current conductor located inside, an uninsulated electrode in the form of the metal grating located between the insulated electrodes. The uninsulated electrode has a recess located opposite the current conductor of the insulated electrode. The insulating material of the insulated electrode has a thermal expansion coefficient close to the thermal solution coefficient of the metallic conductor. The metal grating of the uninsulated electrode consists of the horizontal wires, between which the vertical wires with bulges and depressions are located. The bulges of each subsequent vertical wire are located opposite the depressions of the previous vertical wire. The planes, containing bulges of the outer vertical wires, are arranged at the angle of 15 to 60 degrees to the uninsulated electrode plane.EFFECT: improving reliability of the device operation by providing uniform heat and electrostatic load on the insulated electrode elements during operation.5 cl, 6 dwg
Flotation reagents and flotation processes utilizing same // 2612760
FIELD: chemistry.SUBSTANCE: present invention relates to floatation reagents and a method of froth flotation for improved extraction of valuable sulphide minerals and precious metals from ores, silicate-containing Mg, slime forming minerals and/or clay. Method of enhancing recovery of a value sulphide and/or precious-metal mineral from an ore, containing said mineral and/or precious-metal mineral and one or more of Mg silicate, slime forming minerals and/or clay comprises adding to one or more stage of froth flotation process performed under acidic conditions, a froth phase modifier. Froth phase modifier is a polymer, including one or more functional groups, selected from a group, consisting of sulphonate groups or corresponding acids, phosphate groups or corresponding acids, phosphonic groups or corresponding acids, phosphinate groups or corresponding acids, hydroxamate groups or corresponding acids, silane groups and silanol groups.EFFECT: technical result is higher extraction of valuable sulphide minerals and/or precious-metal minerals from said ore.15 cl, 12 tbl, 65 ex

ethod of selective flotation management // 2612412
FIELD: chemistry.SUBSTANCE: method of selective flotation process management comprises dosage of sulphidizer, activators, depressing reagents and collectors based on pulp electrochemical parameters. Potential difference between two electrodes: molybdenum and ion-selective electrodes, represented by argentite, or tin, or nickel electride, is measured in the pulp flow. Based on the deviation of bimetallic electrode pair potential difference from the predetermined optimum value, sulphidizer activator, xanthate and depressing reagents feeding is corrected to increase reagent dosage in case of increased potential difference, and to reduce reagent dosage in case of decreased potential difference.EFFECT: increased feeding reliability and accuracy of depressing reagents dosage control.19 dwg, 7 tbl, 4 ex
ethod for removing charged particles from gas flow // 2612292
FIELD: gas industry.SUBSTANCE: invention relates to methods for cleaning gases and can be used in power engineering, in ferrous and nonferrous metallurgy, cement, nuclear and other industries. Removal of charged particles from gas flow is performed by electric field of electric filter. To grip microparticles, variable electric field of quadrupole type is used. Variable field generates linear electrodynamic trap, its axis is perpendicular to direction of gas flow rate. In the trap charged particles are captured without depositing on electrodes and removal of trapped particles from gas flow along the axis of the trap by gravity and/or additional constant electric field.EFFECT: higher degree of purification of gas and simplification of system for collecting microparticles.1 cl, 2 dwg

ethod of flotation extraction of rare metals // 2612162
FIELD: mining.SUBSTANCE: method of flotation extraction of rare metals comprises pre-crushing and further flotation under UV emission. Material is crushed in time period from 5 to 10 minutes in amino acetic acid conditions, then classification is performed to determine the grain size class -0.074+0 mm. The prepared material is delivered to the flotation process, where liquid glass is used as depressant, then collector is added, the collector comprises over 95% of sodium diisobutyldithiophosphinates, then pine oil is added as foaming agent. Simultaneously with chemicals addition the pulp is subjected to UV emission during time period from 6 to 12 minutes.EFFECT: increased efficiency of flotation enrichment of ores comprising rare metals, including rhenium under UV exposure, and increased selectivity of separation of valuable elements.1 dwg, 2 tbl
Diatomite benefication method // 2611784
FIELD: mining.SUBSTANCE: diatomite benefication method deals with successive introduction of an aqueous solution of amine oxide into a dispersion of the diatomite in water and then an aqueous solution of alkali metal polyacrylate resulting in disengagement of the beneficated diatomite. The process is carried out while stirring. Disengagement of the beneficated diatomite is carried out within 5-10 minutes. A ratio of solid:liquid (S:L) = 1:4 for the dispersion of the diatomite in water is applied. After both the amine oxide and the alkali metal polyacrylate are introduced the dispersion is being mixed for 3 to 5 minutes. Alkyldimethylamine is used for amine, where the alkyl comprises radical C10H21-C18H37 or C12H25-C14H29.EFFECT: technology is simplified and at the same time the chemically active materials are avoided.6 cl, 1 tbl, 1 ex
ethod for fastening, centering and tension of discharge electrode in electrostatic air cleaning installations of tubular type // 2611664
FIELD: technological processes.SUBSTANCE: discharge electrode is placed and fastened vertically in the air treatment housing with its top attachment point. At the same time the discharge electrode is a single unit with a spinning tube where its loose weight tenses and centers the discharge electrode over the entire length of the spinning tube. The discharge electrode is securely fastened on the insulator over the axis at the bottom of the spinning tube and is freely passed through the insulator axial hole at the top of the spinning tube.EFFECT: assembly and disassembly process is simplified as well as the maintenance process.1 dwg

Aeronautic unit for treatment of air in cities from gases and dust // 2609594
FIELD: transportation; aviation.SUBSTANCE: aeronautic unit for treatment of air in cities from gases and dust includes cigar-shaped shells connected with a frame, a stabilizer, steering wheels and two sustainer propulsion systems. Two sustainer propulsion systems - two electric motors with a screw in an annular fairing with a variable traction vector - are installed on cantilevers attached to side surfaces of the frame. Inside the central shell there is a rigid body of an electrostatic filter filled with many metal meshes - positive electrodes, between which there are wire corona-forming negative electrodes suspended. On the frame there is a wing fixed being coated by solar battery elements, and at the bottom there is a reserve gas cushion for flying at height.EFFECT: reduced concentration of harmful and aggressive gases.4 dwg
Vertical tubular electric filter (versions) // 2608402
FIELD: technological processes; gas industry.SUBSTANCE: invention relates to electric cleaning of gases from suspended particles in different industries, in particular, in chemical and petrochemical industry, metallurgy and other industries. Vertical tubular electric filter comprises a housing, precipitation electrodes, corona-forming electrodes, power supply, characterised by that it comprises an electric drive, rigidly coupled with mechanical transmission, which in its turn is connected to precipitation electrodes arranged in form of hollow drums, configured to rotate on horizontal axles in insulators and bearings, wherein axles are hollow having inside them high-voltage wires, some ends of which are fixed on inner side of precipitation electrodes, and other ends are attached to contact rings fitted on axis of precipitation electrodes, having a sliding contact with brush assemblies mounted on housing and connected by high-voltage wires to power supply, which is also connected with corona-forming electrodes, fixed in insulation inserts, which are fixed in housing of vertical tubular filter in lower part of which there is a catalyst, and at ends of housing there are discharge sleeves to secure scrapers are attached, wherein sleeves are connected with dust collector bin. In vertical tubular electric filter according to second version, precipitation electrodes are made in form of hollow drums and are configured for rotation on vertical axes in insulators and bearings fitted in horizontal inserts of housing, wherein number of precipitation and corona-forming electrodes, as well as their diameters are selected, based on need to ensure required cleaning of gases of combustion products.EFFECT: technical result is providing permanently clean surface of precipitation electrode in active zone of electric filter, which provides higher efficiency of electric filter due to exclusion of ash dust, repeated sticking settled dust when cleaning of precipitation electrodes and elimination of intermittent nature of voltage supply to precipitation and corona-forming electrodes.2 cl, 4 dwg

Flotation classifier // 2608120
FIELD: technological processes.SUBSTANCE: invention relates to concentration of ores by flotation. Flotation classifier comprises a cylindrical chamber with a lower conical part connected with a sands unloader, an installed inside the chamber coaxially with it open from above cylindrical collector of fine particles drain with an inclined drain branch pipe and a pulp level regulator, aerators installed between the chamber walls and the cylindrical collector of fine particles drain, a lower product collector, installed in the upper part of the chamber narrowing chutes made with a lower narrow portion of the bottom and with lower product flow rate regulators and connected in the lower narrow part of the bottom with the lower product collector by means of branch pipes, an installed inside the chamber foam-collecting chute for the upper product of the narrowing chutes and a tangential branch pipe to feed the initial pulp installed to provide a rotational movement of the pulp in the chamber. Narrowing chutes are installed in the upper part inside the cylindrical chamber perpendicular to its radius and are provided with boards having a horizontal upper edge and cutouts for outlet of the upper product of the narrowing chutes in the lower narrow part of the narrowing chutes. Foam-collecting chute for the upper product is located under the narrowing chutes and is made with an output from the chamber.EFFECT: provided is higher efficiency of flotation classification.1 cl, 3 dwg

Apparatus for processing carbon-containing wastes of mines and dressing factories // 2607836
FIELD: mining.SUBSTANCE: invention relates to separation of solid materials in recycling industrial wastes using combined methods, more specifically to a plant for processing carbon-containing wastes of mines and processing plants and can be used in complex processing of a significant amount of waste rock, in particular, from Moscow and Chelyabinsk coal basins, as well as for processing fly ash of thermal power plants to produce at output aluminium silicates, carbon and iron-containing minerals. Apparatus for processing carbon-containing wastes of mines and processing plants includes means for fractionation of raw material in separating medium. Means for separation of suspension of carbon-containing wastes by fractions comprise a screen for preliminary classification, first and second inputs of which are connected to outputs of loading hopper and roll mill. First and second outputs of screen are connected to inputs of roll mill and first hydraulic cyclone, first output of which is connected to first inputs of hydraulic classifiers and screw separator. Second output of first hydraulic cyclone is connected to first input of thickener, which is also connected with first outputs of screw separator and second hydraulic cyclone. Second input of thickener is connected to output of first accumulation vessel for flocculant, first output of thickener is connected to second inputs of screw separator and hydraulic classifier. Second output of thickener is connected to input of electrodynamic separator, first and second outputs of which are connected to inputs of second and third accumulation tanks for iron-containing minerals and aluminosilicate product. Outputs of hydraulic classifiers and screw separator are connected to first and second inputs vibration dryer, third input of which is connected to second output of second hydraulic cyclone. First and second outputs of vibration dryer are connected via pump with input of second hydraulic cyclone and input of fourth accumulation vessel for coal concentrate. Electrodynamic separator is made in form of inclined endless conveyor belt, installed on upper drive and lower driven drums with possibility of movement of working section of conveyor belt from below upwards and supply of separating medium in form of water to upper, and wastes of thickener to lower working part of conveyor belt. Lower driven drum of inclined conveyor is made hollow from dielectric material, inside of which there is a magnetic rotor with possibility of independent rotation.EFFECT: high efficiency of deep complex processing of carbon-containing wastes of mines and concentrators.1 cl, 2 dwg, 1 tbl

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
 
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