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(10624)

Gas flotation tank // 2641926
FIELD: oil and gas industry.SUBSTANCE: flotation tank (10) for removing foreign matter from fluid supplied thereto contains the lower part defining the bottom (50) of the tank (10), a wall (45) defining the sides of the tank; a row of adjacent chambers inside the tank separated from each other by separating walls (65), an oil-collecting chute (15) enclosing each chamber and separated from each chamber by an overflow gate (35). Each chamber has an inclined partition (40) communicating circular movement to fluid in the chamber. The overflow gate (35) is located opposite the inclined partition (40). One of the chambers of the row of adjacent chambers is in fluid communication with branch pipe inlet (20) located near the inclined partition (40) of the row of adjacent chambers. Each chamber is in fluid communication with adjacent chambers through a connecting channel (75) located in the lower part of the separating wall (65) of each chamber and opposite the oil-collecting chute (15). The connecting channel (75) is made for passing the fluid from the chamber to the back side of adjacent camera inclined partition (40). In the separating wall (65), a connecting hole (60) is made between two adjacent chambers. The channel is made in inclined partition (40) at least in one of chambers of the row of adjacent chambers (70) for passing fluid and made for passing flow of fluid between the adjacent chambers through the inclined partition (40) of at least camera. An outlet branch pipe is communicated with one of chambers of the row of adjacent chambers. The connecting hole and the fluid passage channel are provided alternate adjacent chambers.EFFECT: invention makes it possible to provide device for gas flotation preventing, reducing or limiting bypass of water with elimination or decrease of dependence on the connecting pipe.15 cl, 13 dwg

Feeding chute with expansive body for supplying precipitating electrode of wet separating device of overspray // 2641745
FIELD: machine engineering.SUBSTANCE: separation unit includes a plate-shaped collecting electrode on which the precipitating plane for over-spraying is made and a feeding device by which a precipitating liquid is supplied to the precipitating plane of the precipitating electrode and which includes a chute configured to be filled with the precipitating liquid and a sampling device by which the precipitating liquid is taken from the chute. In this case, the sampling device includes a variable in shape, flexible and/or elastic expansive body disposed in the chute, partially limiting the closed cavity, and a pumping device by means of which a pressure transmitting medium can be pumped into the closed cavity.EFFECT: effective overspray of particles in the separating device in which the precipitating liquid can be taken from the chute with an accurate, largely independent from the material properties bailing force.12 cl, 9 dwg

Composite reagent for coal flotation // 2641626
FIELD: chemistry.SUBSTANCE: composite reagent for coal flotation consists of a mixture of reagents including light gas oil of catalytic cracking, distillation residues of styrene rectification and additive "Ekofol-440" in the ratio of components in the range of 35:58:7 to 25.3:63.3:11.4 wt %.EFFECT: increasing the yield of the concentrate, increasing the extraction of combustible mass into the concentrate and increasing the selectivity of the process.1 dwg, 6 tbl
Device for gravity concentration of mineral resources // 2641147
FIELD: mining.SUBSTANCE: device for gravity concentration of mineral resources includes a hopper coupled to a distribution chamber, on both sides of which inclined ascending and descending separating transport channels are installed, in which overlapping plates are arranged with possibility of changing its spatial position, and an inclined discharge channel with a device for transportation of dispersed mineral material. The device is provided with pressure vessel for separating medium, connected by a pipe to the lower channel of the device through the inclined channel for unloading heavy product of coarse fraction, connecting device with dewatering elevator, and adjusting density of material separation by its specific weight by setting water level in pressure tank by means of movable gate device and maintaining the specified density of separation by lifting or lowering the gate device determining the level of water in the pressure tank. A pressure sensor is mounted on the upper part of lower channel and connected with the drive of the gate device, which keeps constant pressure automatic mode and specified density of separation in the lower channel of device. The descending transport channel is connected to the inclined discharge channel. A calibrating hole is installed in the lower part of the descending transport channel.EFFECT: enhanced efficiency of material separation by density.4 cl, 2 dwg

ethod for reducing loss of valuable substances in enrichment of mineral raw materials (versions) and its application (versions) // 2640619
FIELD: chemistry.SUBSTANCE: method for reducing the loss of valuable substances in the enrichment of mineral raw materials, wherein the mineral mixture after the first stage of separation, dry or suspended, contains a fraction with a zone of gangue and a surface zone of valuable substances, and the zone of gangue exceeds the zone of valuable substances. For agglomeration of pellets of the grain-size fractions with the zone of valuable substances, the mineral mixture, if it is not already in the form of suspension, is suspended, and at least one anionic surfactant and at least one oil are added to the suspended mineral mixture to wet the surface of the zone of valuable substances in order to form liquid bridges between the zones of valuable substances and pellets. The mineral mixture in the solution saturated with the fraction of valuable substances and gangue is redirected to the wet separation stage for classification into a fraction depleted of valuable substances and a fraction more enriched with valuable substances. At the wet separation stage, separation is performed by flowing a liquid film. The fraction more enriched with the valuable substances taken from the wet separation stage is subjected to wet grinding and the fraction ground by wet grinding is fed to the next stage of the classification. This method is used to isolate calcite from a mixture containing quartz. In another version, at least one cationic surfactant and at least one oil and/or at least one volatile substance obtained from oil are added to the suspended mineral mixture, for wetting the surface of the zone of valuable substances to form liquid bridges between the zones of valuable substances and pellets. The method of the second version is used to isolate sylvite from a mixture of salts.EFFECT: reduction of losses of valuable substances in the enrichment of mineral raw materials.13 cl, 2 dwg, 4 ex

Proppant with improved bubbles for hydraulic fracturing in wells // 2640614
FIELD: oil and gas industry.SUBSTANCE: method for forming gas-filled bubbles on the surface of proppant particle comprises the steps for placing proppant particles in water at operating pressure of 8000-12000 psi, creating excessive gas pressure in water equal to or greater than the operating pressure of 8000-12000 psi to create saturation around or in the immediate vicinity of proppant particle, in the result the bubbles are formed on surface of proppant particles, and excessive pressure relieves from water to operating pressure level. The invention has been developed in the dependent claims.EFFECT: improved efficiency of hydraulic fracturing.11 cl, 1 dwg

Separation device for reduced polymer wastes // 2640453
FIELD: machine engineering.SUBSTANCE: invention refers to the separation devices for plastic scrap, which is a polymer waste of different textures with different density and aerodynamic characteristics, and may be used for separation of reduced waste generated in the processing of PET bottles. The separation device for reduced polymer waste, containing two fractions with different specific gravity, contains a separation chamber with one inlet port for supplying a stream of reduced wastes placed in the upper part of mentioned chamber, and at least two outlet ports, one of which is intended for the reception of heavy fractions and is made in the lower part of the chamber and placed directly under the inlet port and another for the reception of light fraction, a cyclone for separating the air from the stream of reduced waste, the outlet branch of which is located above the mentioned separation chamber and a blowing fan for supplying air stream with reduced waste into the cyclone. The device is provided with at least one air blower connected by an air duct with an inlet port formed in the side wall of the separation chamber to form a horizontally directed working air flow in the upper part of the latter, in the zone of the inlet port, and the distributor of a flow of the reduced waste which is unsightly adjoining the outlet branch pipe of the cyclone, connecting it to an inlet port of the separation chamber. The inlet port of the separation chamber is made in its upper wall, has a slot-like shape and is located along the side walls of the separation chamber to form two crossing streams of air in the separation chamber - the working air is being fed horizontally through the mentioned inlet port and the second one is carrying the above-mentioned reduced waste coming from above through the inlet port to the separation chamber. The outlet port for the heavy fraction is equipped with a diffuser expanding towards the inlet port. The outlet port for the light fraction is made in the lower part of the chamber and is located behind the outlet port for the heavy fraction in the direction of the horizontal air flow in the separation chamber.EFFECT: increase separation efficiency, and increase its productivity.3 cl, 2 dwg

ethod of flotation concentration of sulfide lead-zinc ores // 2639347
FIELD: mining.SUBSTANCE: method of flotation concentration of lead-zinc ores includes ore preparation, bulk flotation followed by separation of lead-zinc concentrate. Prior to cycle of bulk flotation, preliminary lead flotation is carried out to produce lead concentrate and flotation tail. Bulk flotation is carried out with addition of butyl xanthate and diesel fuel in ratio of 1:1.5. Obtained bulk concentrate is treated with Ochrobactrum anthropi and Pseudomonas aeruginosa JCM 5962 bacteria in ratio OF 1:1 for 24 h.EFFECT: increased efficiency of sulfide lead-zinc ores flotation process.1 dwg, 3 tbl

Improved separation system with air supply // 2639340
FIELD: technological processes.SUBSTANCE: system of separation of multiple particles, contained in the pulp, includes a separation tank, pulp feeder, branched pipeline for pseudofluidized flow, gas supply system and underflow pipeline, which are all designed to create a pseudofluidized flow in the separation tank by feeding the pulp through the pulp feeder and providing the pulp with the possibility of interaction with pseudofluidized flow from the branched pipeline for pseudofluidized flow. The separation tank contains a tray for collecting particles, moved to the top of the separation tank. The gas supply system has been implemented to control the size of gas bubbles in the pseudofluidized flow and contains a gas supply pipeline, bypass upflow water pipeline to bypass said gas supply pipeline. The gas supply system is adjustable to vary the size of the gas bubbles by changing the flow rate of the upflow water through said gas supply pipeline. The gas supply pipeline and the bypass pipeline converge in one point to create a pseudofluidized flow. The pseudofluidized flow volume is controlled by changing the flow rate of upflow water through the gas supply system. In another embodiment, the separation system comprises of an upflow water feed line connected upstream of the gas supply system and a reagent supplied into said particle treatment water supply line. The method for controlling the size of gas bubbles in the pseudofluidized flow, directed to the branched pseudofluidized flow pipeline in the separation tank, includes the stages, at which the first portion of upflow water is moved through the gas supply pipeline, the second portion of upflow water is moved through the bypass pipeline, the flow rate of the first portion of upflow water is changed, the first portion of the upflow water is saturated with gas in the gas supply pipeline in order to make gas bubbles, the first and second portions of upflow water are combined to make a pseudofluidized flow and the pseudofluidized flow is fed into the separation tank through the branched pseudofluidized flow pipeline.EFFECT: higher separation efficiency.28 cl, 4 dwg
Device for wet gravity concentration of fine-grained sand // 2639107
FIELD: machine engineering.SUBSTANCE: device comprises a housing with units of water supply, initial sand loading, unloading of light fraction in the form of tailings and unloading of heavy fraction in the form of concentrate, it is additionally equipped with inner and outer bowls installed in the housing one inside the other, rigidly connected with each other and made with the possibility of orbital and oscillatory motion, and the unloading unit of intermediate density fraction. The initial sand loading unit consists of an external feed hopper and an internal feed hopper with a branch pipe at the center of the inner bowl, which is made with a perforation in the form of openings. The space between the bowls is filled with an artificial bed. Unloading unit of heavy fraction in the form of concentrate is connected to the bottom outlets of perforated elastic tubes, unloading unit of light fraction in the form of tailings is made with the possibility of faction unloading concentrated in the central and upper parts of the inner bowl, and the unloading unit of intermediate density fraction is made with the possibility of faction unloading with the rise up in space, limited by the outer side of the inner bowl, inner side of the outer bowl and outer surface of the pipes.EFFECT: increased efficiency of extracting fine-grained minerals low-contrast in density.3 dwg
Classifier // 2639005
FIELD: mining.SUBSTANCE: classifier includes a stirring chamber having a stirring fluidising bottom and a concentrating chamber having a concentrating fluidizing bottom. The concentrating fluidizing bottom and at least a portion of the concentrating chamber are located below the stirring fluidizing bottom. The concentrating chamber has a horizontal cross-sectional area of approximately 20 to 200 times less than the horizontal cross-sectional area of the stirring chamber. With the help of the above classifier, a material sorting method is carried out, comprising feeding the material to be sorted into a classifier stirring chamber, transferring the material in the stirring chamber to a fluidized state, transferring a portion of the material to the classifier concentrating chamber, fluidly linked with the mixing chamber, transferring material in the concentrating chamber to a fluidized state, the formation in the concentrating chamber of the concentrating fluidized bed, the separation of the material by means of at least concentrating fluidized bed and the output of heavier pieces of sorted material from concentrating chamber.EFFECT: increased efficiency of separation.10 cl, 5 dwg

Device for flotation separation of nano- and microstructures mixture // 2638600
FIELD: nanotechnology.SUBSTANCE: device for the flotation separation of nano- and microstructures mixture contains a cone-shaped body, an annular inclined groove for collecting the foam product, a branch outlet for the chamber product in the cone lower part, and aerators with pulp and air feed nozzles. The cone-shaped body is divided by height-adjustable cylindrical partitions, the symmetry axes of which coincide with the axis of symmetry of the cone-shaped body. At least the outer cylindrical partition is set in height above the edge of drain threshold. Aerators with pulp and air feed nozzles are installed in the body evenly along the circumference of its surface. As aerators, sound pneumohydraulic and/or jet aerators are used. The nozzles of the sound pneumohydraulic and/or jet aerators are directed down along the surface of the body cone and at an acute angle to the generatric of body cone.EFFECT: increase the degree of separation of nano- and microparticles with simultaneous reduction of energy costs.3 cl, 1 ex, 6 dwg

ethod of cleaning gases from dust and electrostatic precipitator for its implementation // 2636488
FIELD: technological processes.SUBSTANCE: electrostatic precipitator comprises a housing, in which one or more fields are located, each field comprises several channels (3). The channels (3) comprise planes with gas-permeable precipitation electrodes (1) made of tubular elements. The gas-permeable plane of corona electrodes (2) is arranged between them at an equal distance. Shutters (4) and diaphragms (5), located in the channels in staggered order, have the geometric form of a concave cycloid and are made in the form of paired interceptors. The rear edges of the interceptors are in the plane of the corona electrodes, the front ones - in the plane of the precipitation electrodes, and are installed perpendicular to them. The distance between two adjacent diaphragms (5) in the channel (3) is equal to twice the gap (2H) between the planes of the precipitation electrodes. A gaseous flow (7) changes the motion direction from the sinusoidal (8) to the circular (9), passes through the corona discharge zone, where dust particles receive the maximum electric charge, then enters the zone of the quasihomogeneous electrostatic field (6), where the dust particles precipitate intensely. The gaseous flow cyclically and sequentially changes the direction of its circular motion, returns to the sinusoidal motion, passing stepwise through the entire length of the electrostatic precipitator channel.EFFECT: improving gas cleaning quality.6 cl, 2 dwg
ethod for producing representative samples of superviscous oil from oil-saturated core and device for its implementation // 2636481
FIELD: oil and gas industry.SUBSTANCE: drilling a well bore and sampling the core in a potentially productive interval, isolating the sampled core during the sampling process and/or immediately after it. The sample is formed from the well core by isolation of required amount of core material with subsequent disintegration. Plastic cups are filled with core material followed by heating and further placing them in centrifuge suspensions. The fluid contained in the rock is displaced under the action of centrifugal force, in which a centrifuge with a thermostatically controlled working chamber is used. Cleaning of fluid sample extracted from core is performed from fine particles of sedimentary rocks in heated state by gravity separation method. The water-oil emulsion is separated and the fluid is removed from the fluid sample by thermodynamic action. The device comprises a disintegration unit, a centrifuge with a horizontal rotor and suspensions with the possibility of thermal stabilisation of the working area, a thermostatic cabinet, a freezing chamber. The centrifuge suspensions are made for installing the plastic cups with a flat bottom perforated along the side wall at the cup bottom.EFFECT: increased fluid extraction without chemical action for the subsequent analysis of fractional composition of potentially extracted fluid, improved quality of information on physico-chemical and geological properties of extracted fluid, and reliability of the field exploitation parameters prediction, reduced time for production of representative fluid sample.2 cl, 2 dwg
Laboratory flotation machine // 2636074
FIELD: machine engineering.SUBSTANCE: machine contains a housing, a removable chamber with a lift drive, a movable platform, an aeration unit consisting of an impeller, an impeller shaft and a stator, an impeller shaft drive servo motor, a reducer, a servo motor control unit. The machine further comprises a programmable logic controller, an operator touch panel, a wireless network router, a compressed air microcompressor, a compressed air flow sensor to the aeration unit, a control valve for the compressed air flow to the aerator unit, at least two micropumps for dispensing flotation agents, a pulp level control device in the flotation machine, including a displacement cone with a drive mechanism, a casing, a pulp level sensor, and an air supply nozzle for supplying compressed air to the pulp level sensor blow. The outputs of the compressed air flow rate and pulp level sensors are connected to the corresponding inputs of the programmable logic controller. The outputs of programmable logic controller are associated with the information input of operator touch panel and the control inputs of the impeller shaft drive servomotor control unit, the compressed air microcompressor, the flotation agent metering micropumps, the control valve for compressed air flow to aeration unit, the drive mechanism of displacement cone, and the lifting drive of removable chamber. The input of wireless router is connected to the interface outputs of programmable controller and operator touch panel. The removable chamber is made in the form of a vessel in the form of a straight octagonal prism containing at least two sleeves for drainage of foam and a pocket for placing a pulp level sensor in a flotation machine. The removable chamber is made either in the form of a cylinder, or in the form of a truncated cone, or in the form of a rectangular parallelepiped.EFFECT: improving the quality of experiments, increasing the degree of automation of the machine.5 cl, 5 dwg

Electrical air cleaner // 2635316
FIELD: electricity.SUBSTANCE: device comprises a housing with an inlet and outlet openings for air passage, an endless belt drive with top and bottom pulleys, an electrode group consisting of corona electrode and collecting electrodes in the form of endless belts powered by the drive pulleys, the second cleaning area - a precipitator, located behind the corona electrode in the direction of the air movement. The precipitator is formed by an electrode group composed of paralleled equidistant collecting electrodes in the form of endless belts powered by the drive pulleys. In the space between the collecting electrodes there are channels are for the air passage, a repelling electrode in the form of an electrically conductive plate is located in each channel parallel to the nearest collecting electrodes and equidistant from them. A potential of the same polarity as the potential of the corona electrode is supplied to the repelling electrode. The amount of collecting electrodes of the precipitator is two or more. The cleaner additionally comprises liquid tanks, while the bottom slave driven belt pulleys of the collecting electrodes are immersed in the tanks, and the belts of the collecting electrodes are made with the possibility of withholding on the surface of a liquid layer. The corona electrode is made in the form of a wire or a rod. The power supply device is configured to provide a potential difference from 10 to 100 kW and with the possibility of providing a potential difference between the repelling and collecting electrode determined by the corresponding relationship.EFFECT: high quality of air cleaning is provided, the amount of harmful gases is reduced, the efficiency of collected particles recycling is increased, and the operating costs are reduced.5 cl, 5 dwg
Device for dense medium separation of material // 2635314
FIELD: technological processes.SUBSTANCE: device comprises a bath tapering downwardly, having a loading device in the upper part and an overflow board on the opposite side of the bath for unloading the float product and an opening in the lower part connected to a discharge pipe for unloading the drowned product. The device is equipped with oscillating screens for float and drowned fractions, a drowned product level sensor and a control unit. The outlet of the discharge pipe is located above the mesh of the oscillating screen for the drowned product. The control unit is connected to the level sensor and to the oscillating screen for the drowned product with the possibility of adjusting the frequency of oscillations of the screen mesh, thereby regulating the discharge speed of the drowned product and maintaining the level of the drowned product at the bottom of the bath. The bath has the shape of a pyramid turned upside down, while the bath wall on the side of the loading device has an arc shape concave into the bath in its vertical section. The bath wall on the side of the tail board and the adjacent side walls are flat and located at an angle of 45-60 to the horizon. A valve is installed at the outlet of the discharge pipe. A magnetic lock connected to the control unit is installed on the discharge pipe with the possibility of regulating the flow velocity of the magnetite slurry and the drowned product. The discharge pipe is located with an inclination angle of the axis to the horizon from 90 to 45. On the side of the tail board of the bath there are revolving arms.EFFECT: increasing the efficiency of material separation, reducing the consumption of the suspension.7 cl, 1 dwg

ethod and device for modernization of electrofilter // 2635261
FIELD: technological processes.SUBSTANCE: method for modernization of an electrofilter consisting of several fields is carried out by installing horizontal rows of filter elements facing the gas flow, a regeneration system with distributing pipes installed horizontally, and a clean gas chamber with a hose plate installed vertically, in the last field of electrofilter. In this case, the switching off filter elements from gas flow for regeneration is carried out by groups of horizontal rows of filter elements. Disconnection of groups of elements is carried out alternately from top to bottom, and regeneration of the rows in each disconnected group is carried out alternately from the bottom up. The device for the modernization of electrofilter includes the installation of a part of the last field of a hose plate with horizontal rows of filter elements, placed edges upstream to gas, a regeneration system with distributing pipes installed horizontally, and clean gas chambers. Wherein, the clean gas chamber along the height of the hose plate and the number of groups of horizontal rows of filter elements is divided into sections with a separate gas flow outlet.EFFECT: modernization of existing electrostatic precipitators in the same dimensions of the body of the device with simultaneous increase in efficiency and durability of the filter part of the electrofilter.8 cl, 3 dwg

agnetic liquid separator for recovering gold from mineral raw material // 2634768
FIELD: machine engineering.SUBSTANCE: separator includes a magnetic system, in which interpolar gap there is a separation chamber with a partition wall filled with magnetic liquid, a mechanical vibrator, loading and unloading devices. The separation chamber is provided with a grid of non-magnetic current-conducting plates arranged vertically along the separation chamber, and alternating current source, which electric circuit is closed through non-magnetic current-conducting plates of the grid.EFFECT: increased gold recovery.2 dwg, 1 tbl

Device for electrostatic classification of finely-dispersed materials // 2634664
FIELD: electricity.SUBSTANCE: device comprises a cylindrical housing with a wide inlet in its upper part connected to a vacuum lock, passing into an annular throat in the lower part, a high-voltage power source located inside a hollow cylinder - a charging electrode housing installed in the upper part on the classifier housing axis, a charging electrode spiraled on the surface of the hollow cylinder mounted on insulators, an inlet of a vacuum pump equipped with a filtre placed in the lower part of the classifier housing, a vacuum system placed outside the housing; a system of precipitating electrodes installed on the inner cylindrical surface of the classifier housing and made in the form of open truncated cones which inputs are taken by a net, with outer edges passing into launders connected by nozzles to the receiving containers having outputs with valves for connection to the vacuum locks. The housing of the device is vacuumized, and vacuum locks are used for the continuous supply and selection of classified materials.EFFECT: efficiency of classification by size of finely-dispersed materials is increased.1 dwg

Flow line for enrichment of polymetallic raw material and isolation of finished product // 2634314
FIELD: machine engineering.SUBSTANCE: line includes a washing-and-grinding module, a module of basic gravitational concentration of mineral raw material installed in the direction of transport mass flow, and a module of basic gravitational concentration of mineral raw material. The line is additionally equipped with a module for final grinding of gravitation tails containing a ball mill and classifying apparatuses, and module for isolation of finished product, electrolyzers for intensive cyanidation of gravitational concentrates, electrolyzers for isolation of cathode gold, dosing pumps, collecting and storage tanks. The washing and grinding module comprises wet self-disintegration mills and ball mills closed with each other through a classifier. The module of basic gravitational concentration of mineral raw material has jigging machines arranged in series, concentration tables and centrifugal concentrators.EFFECT: increased extraction efficiency of free gold and lead grains from polymetallic ores, reduced loss of valuable component in small classes.1 dwg
Device for separate conditioning of flotation pulp // 2634313
FIELD: mining engineering.SUBSTANCE: device for separate conditioning of flotation pulp includes a cylinder conical separation chamber with a tangentially disposed branch pipe for pulp delivery and a discharge hole for diverting coarse pulp fraction, a reagent chamber disposed in the conical part of the separation chamber, a discharge chamber coaxially located in the cylindrical part of the separation chamber connected by divertion discharge pipe with a mixer and a pulp fraction separator located under the separator chamber. An axisymmetric conchiform cap is placed in the mixer. To adjust volumetric load on the device the inlet branch pipe is equipped with a throttle, and the drain pipe with a sliding discharge regulator.EFFECT: improving efficiency of conditioning process.2 dwg

ethod of cavitation-hydrodynamic microdisintegration of hydraulic mixture mineral component // 2634153
FIELD: mining engineering.SUBSTANCE: method includes velocity delivery of a jet to a hydrodynamic generator, treatment of the hydraulic mixture under the conditions of active hydrodynamic effects by means of the influence of a body placed therein and successively installed stationary elements, including plate cavitation elements, with provision of deep disintegration of the mineral component of the hydraulic mixture to micro-level by converting the kinetic energy of liquid flow into the energy of acoustic vibrations in the hydrodynamic generator. In order to create stability conditions of the system, taking into account electrostatic interaction of the diffusion layers of ions of mineral component particles of the hydraulic mixture, the velocity jet is fed to a spider with cassettes rigidly fixed along the axis of the hydrodynamic generator, through flow stabiliser with splitters for subsequent distribution of flow in gaps along flat surfaces of cassettes installed on two sides of the spider guides with gaps in parallel relative to each other, with a shift in vertical direction due to reduction of flat surfaces area of mineral component, and a shift in horizontal direction-from the spider connection center to the body walls and fixed in the grooves of angular and radius inserts. The additional jet separation with the intensification of the cavitation-acoustic effect on the hydraulic mixture mineral component to obtain given average value of the volumetric density of the hydrodynamic effect on the microparticles is carried out at the outlet by means of accumulation of the flow in confuser zone with stationary cavitators longitudinally installed along the flow direction.EFFECT: increased efficiency of microdisintegration process.4 dwg

ethod for beneficiation of high-clay placer sands of predominantly fine gold // 2634151
FIELD: mining engineering.SUBSTANCE: method includes feeding hydraulic mixture, separation of mineral hydraulic mixture component into fractions by creating a profile of flow velocities due to installation in an inclined chute with smooth bottom, flow deformations taking into account dilution of hydraulic mixture, change of inclination of inclined chute and granulometric composition of gold, discharge of slurry in benefication working cycle and periodically automated cleaning of heavy fraction from zones with removable and automatically controlled lifting of templates by means of an irrigation system. In the process of the benefication working cycle, the hydrodynamic effects of the resonance type are periodically formed as hydraulic mixture enters the front part of the inclined chute with disintegration system of clay inclusions in the hydraulic flow by reduction of V-shaped profile in the longitudinal direction relative to the plane of inclined chute smooth bottom depending on ratio T:G of hydraulic mixture, the content of clay component in sand, inclination of inclined chute and granulometric composition of gold, as well as flow deformations in the form of stationary dividers. The latter are made on sides of the inclined chute on two sides in front and middle parts of the inclined chute, with removable and automatically controlled lifting between the zones during automated cleaning with templates. The front surfaces of the stationary dividers form angles equal to 30 with their side surfaces, and the side surfaces form with the horizontal axis of the front part of the inclined chute the angles of 15, providing creation of rarefied area for formation of cavitation effect facilitating destruction of fine mineral particles. The first stationary dividers in the direction of hydraulic mixture movement are mounted by their front portion upwards so that the distance of the apexes of the front edges of the dividers from the chute smooth bottom plane is equal to 0.75 of the height of the hydraulic mixtures flow, and the inclines of their upper surfaces form angles, equal to 20 relative to the chute smooth bottom plane. The following stationary dividers in the direction of slurry movement with their front portion are turned down to a depth forming minimal gap between the apexes of the front edges of the stationary dividers and V-shaped profile of the front part, and the chute smooth bottom plane in its middle part which exceeds the maximum size of pellets of the clay inclusions in hydraulic mixture for further destruction and provision of vortex movement.EFFECT: increased performance by providing efficiency of disintegration process of hydraulic mixture mineral component of high-clay placers of noble metals with high content of fine fractions of valuable components.3 dwg

ethod of cavitation-hydrodynamic disintegration of hydraulic mixture mineral component // 2634148
FIELD: mining engineering.SUBSTANCE: method includes velocity delivery of a jet to a hydrodynamic generator, treatment of the hydraulic mixture under the conditions of the active hydrodynamic effects by means of the influence of a body placed therein and successively installed stationary elements providing deep disintegration of the mineral component of the hydraulic mixture to the micro-level by converting the kinetic energy of fluid flow into the energy of acoustic vibrations in the hydrodynamic generator, which at inlet a high-speed jet is created. The high-speed jet is fed to stationary elements including a splitter with helical blades which are engageable with the upper inclined surface with an elliptical hole displaced in one of the sides and cavitation inclined thresholds installed at its bottom part by an acute angle towards the flow of the hydro-mixture for separation of the flow and amplification of the oscillations. In order to amplify the fields of the primary hydrodynamic cavitation and to create the secondary acoustic cavitation, there is a cascade overflow of the hydraulic mixture into successively and stepwise inclined surfaces arranged in the direction of movement of the hydraulic mixture with displaced elliptical openings at different sides, relative to previous and subsequent inclined surfaces, with cavitation inclined thresholds installed on the lower parts of the inclined surfaces by an acute angle towards the flow of the hydro-mixture for intensification of the cavitation-acoustic effect on the mineral component of the hydraulic mixture.EFFECT: increased efficiency of deep disintegration process of hydraulic mixture mineral component of placer clay sands.3 dwg

ethod of high-clay beneficiation of placer sands predominantly with fine and thin gold // 2634145
FIELD: mining engineering.SUBSTANCE: method includes feeding hydraulic mixture and separation of mineral hydraulic mixture component into fractions by creating a profile of flow velocities due to installation of flow deformations in inclined chute with smooth bottom, taking into account dilution of hydraulic mixture, change of inclination of inclined chute and granulometric composition of gold, discharge of slurry in benefication working cycle and periodically automated cleaning of heavy fraction from zones with removable and automatically controlled lifting of templates by means of an irrigation system. In the process of the benefication working cycle, the hydrodynamic effects of the resonance type are periodically formed as mineral hydraulic mixture enters the front part of the inclined chute with disintegration system of clay inclusions by means of flat stationary dividers rigidly fixed by supports on the sides of the inclined chute from two sides in the fron and the middle portions of the inclined chute, between the zones of heavy fracion deposition with templates. The dividers are installed in pairs by cross-piece under inclines relative to the planes parallel to the smooth bottom, at angles of 10 to 20 and in a certain sequence from the top to the bottom, in the front part of the inclined chute depending on dynamics of disintegration of highly-clay sands with gaps between each other and the smooth bottom, exceeding the maximum size of the pellets of clay inclusions in the mineral hydraulic mixture, and oriented at one angle equal to 90, towards mineral hydraulic mixture, for formation of rarefied areas under smooth and flat stationary dividers, providing formation of cavitation effect facilitating destruction of clay inclusions and extraction of fine and fine mineral particles of valuable components.EFFECT: increased performance by providing efficiency of disintegration process of hydraulic mixture mineral component of high-clay placers of noble metals with high content of thin fractions of valuable components.3 dwg
ethod of processing red mud // 2634106
FIELD: technological processes.SUBSTANCE: red mud is ground and separated by magnetic separation into magnetic and non-magnetic fractions. Before grinding, red muds are mixed with water activated by the magnetic field to the state of the pulp. To grind the mud, a pulp flow is formed and passed through a "boiling bed" of ferromagnets, which is acted upon by a rotating magnetic field. The frequency of the rotation of the magnetic field is changed until cavitation in the pulp flow occurs at the resonance of the ferromagnets oscillations with the self-oscillations of the pulp particles in the frequency range 14-25 khz with the destruction of the solid pulp fractions into the constituent finely divided elements. After that, they are sent to a magnetic separation to separate into types, and water is removed for a subsequent cycle.EFFECT: reduces power consumption.1 cl

Waste water treatment plant // 2633541
FIELD: chemistry.SUBSTANCE: plant includes flotation cell 1 with insoluble electrodes 2, a floating filtering charge 3, floating sorption active charge, soluble electrode 4. Flotation cell 1 contains partitions made in the form of four cylinders 5 with an upper part in the form of conical collecting device 6 installed coaxially with respect to each other. The upper part of the side wall of the first and the third and the lower part of the second and the fourth upstream cylinders 5 are perforated. The upper parts of cone devices 6 are provided with vertical tubes 7 with ends arranged at the same level. Floating filtering charge 3 is located between the fourth cylinder 5 and the wall of housing 8 of flotation cell 1. The floating sorption-active charge is located below floating filtering charge 3. In the space between the second and the third cylinders 5, annular bubbler 13 is formed. Soluble electrode 4, which is a mixture of iron and copper balls packed into a dielectric perforated box, is located in the first cylinder 5 at a distance from the bottom. Ultrasonic generator 11 is mounted below soluble electrode 4.EFFECT: invention allows to increase the efficiency of wastewater treatment.4 cl, 3 dwg, 1 tbl

ethod for improving selectivity and extraction of sulfide nickel ores flotation that contain pyrrotine by using synergy of multiple depressors // 2633465
FIELD: metallurgy.SUBSTANCE: method for improving selectivity and extraction of valuable non-ferrous sulphide minerals associated with iron sulphides during froth flotation of non-ferrous metal sulfides comprises treament of sulphide ore with either fresh-ground slurry or pre-treated and fine-ground intermediate product that contains at least one or more sulphide minerals of industrial meaning as non-ferrous metals with iron sulfides, in aqueous alkaline suspension in the presence of a collector, foam agent, PH modifier, a carrier gas distributed on the suspension, and multiple depressants, performing froth flotation to suppress iron sulfides while ensuring flotation of sulfides of non-ferrous metals. The depressants comprise at least one organic polymer selected from hardwood lignosulfonates, at least one sulfur-containing compound selected from water-soluble inorganic sulfur-containing compounds, and at least one nitrogen-containing organic compound selected from polyethylene polyamines.EFFECT: improvement of iron sulphide suppression without reducting valuable sulphide metals extraction, reduction of environmental pollution.21 cl, 9 dwg, 9 tbl, 9 ex

"gran-m" planetary classification enrichment device // 2632789
FIELD: mining engineering.SUBSTANCE: planetary classification device for enrichment and transportation of minerals due to the action of centrifugal force fields includes a body, consisting of a unitary hopper, a flattened cone scrubber, overlapped by an conical collecting pipe, ejected snails for the removal of small and coarse fractions, mounted on one side on the frame by Hooke's joint bearings, and on the other side to the drive shaft with a flywheel that informs the body the planetary-translational motion on the circular cone. The device is equipped with a separator in the form of a flattened cone with crimps, a snail for the withdrawal of the separator concentrate and sprinklers. The body is hingedly connected to the pin, which is rigidly fixed in the groove on the spoke of the flywheel, with the possibility of moving the pin attachment point in the groove, made in the form of an arc, each point of which is equidistant from the point of intersection of the device axes.EFFECT: increasing the extraction efficiency of fine fraction minerals into the concentrate.2 dwg

ethod for dressing iron-containing ores // 2632788
FIELD: mining engineering.SUBSTANCE: method includes several grinding stages, wet magnetic separation of ground products of each stage with production of middlings and waste tailings and with production of concentrate by means of wet magnetic separation after last grinding stage. The middlings after the first grinding stage are separated by magnetic properties to produce magnetic and medium-magnetic products. The medium-magnetic product is ground and dressed by wet magnetic separation in several stages with production of waste tailings and concentrate after last grinding stage. The magnetic product is ground in a separate second stage and dressed by wet magnetic separation to produce second concentrate and waste tailings. The second concentrate is ground in a separate third stage and dressed by wet magnetic separation to produce a high-quality concentrate and waste tailings.EFFECT: increased efficiency of iron-containing ores dressing, improved quality of the iron concentrate.3 cl, 5 dwg, 2 tbl

Sludge preparation unit from ash and slag waste // 2632081
FIELD: power industry.SUBSTANCE: sludge preparation unit from ash and slag waste contains a mixer of waste with a thinning medium, equipped with a mixing means and aline for feeding the thinning medium, a doser-feeder for the ash and slag waste, a consistency metre of the thinned ash and slag sludge installed behind the mixer. The ash and slag feed line connects the mixer to its storage unit. The sludge mixer tank and its storage unit tank are made with conical bottoms, with an angle of inclination greater than the angle of the natural slope of the slurry. The upper part of the sludge mixer tank is equipped with an ash and slag waste loading branch pipe, which is connected to the ash and slag waste doser-feeder, which is not aligned with the vertical axis of the sludge mixer tank, and is provided with a branch pipe for receiving the thinning medium, preferably oriented tangentially with respect to the vertical axis of the tank. The mixing means comprises an immersion slurry pump, the pressure branch pipe of which is connected by a recirculation line connected to the bottom branch pipe of the mixer tank via the first valve. The pressure branch pipe of the slurry pump via the second valve is connected to the feed line of the ash and slag sludge, which input to the sludge storage unit is made tangential. The suction branchpipe of the immersion slurry pump is placed with clearance to the outlet of the bottom branch pipe and to the walls of the mixer tank. The mixer is located below the sludge storage tank, the upper end of which is connected to the bottom of the mixer tank by a drain pipe. The upper wall of the sludge tank is provided with an air supply branch pipe. The sludge discharge line for processing is provided with the third valve and is connected with the bottom outlet of the pulp tank capacity, which is connected to the recirculation line via an additional pipeline through the drain valve.EFFECT: increased efficiency of uniform distribution of particles with differing hydraulic size over sludge volume and excluded formation of sludge particle accumulation zones in the mixer's volume.1 dwg

ethod for integrated processing of man-made and complex iron-bearing raw materials // 2632059
FIELD: technological processes.SUBSTANCE: method for integrated processing of man-made and complex iron-bearing raw materials includes grinding, magnetic separation and classification. The raw material is additionally grinded and subjected to magnetic separation in weak magnetic field. The weak magnetic product is finely ground and directed to magnetic separation in strong field. The non-magnetic product in the form of tails is sent to a tailings pond. The magnetic product is sent to hydraulic classification, the discharge is subjected to fine screening, the sublattice pulp is subjected to ultrasonic treatment with simultaneous aeration of the pulp with air. Then the pulp is thickened, filtered, dried, and a strong magnetic product, hydraulic classification sands and take-off product of fine screening are sintered and directed to metallurgical processing.EFFECT: production from low-quality, complex raw materials and actual waste products, in demand both in metallurgical and paint and varnish industries.1 dwg, 2 ex

Enrichment of sulphide metal ore by means of foam flotation using oxidant // 2631743
FIELD: mining engineering.SUBSTANCE: method for treating a sulphide metal ore to recover the necessary mineral from a sulphide-containing gangue includes obtaining pulp by suspending the ore in water and grinding said ore; and enriching the pulp with said necessary mineral by foam flotation where hydrogen peroxide is added to said pulp immediately prior to passage or during passage of oxygen or air through said pulp. The optimum amount of hydrogen peroxide added is determined based on measurements of the oxygen content dissolved in the pulp.EFFECT: improving the quality and recovery of essential minerals, especially copper from sulphide ores.13 cl, 10 dwg, 11 tbl
ethod for extracting carbon nanotubes from dispersed carbon-catalyst composite // 2630342
FIELD: chemistry.SUBSTANCE: invention is designed to extract carbon nanotubes from a dispersed carbon-catalyst composite into a separate product, used in the production of sorbents, catalyst carriers, stationary chromatographic phases, composite materials and functional coatings. The method for extracting carbon nanotubes from dispersed carbon-catalyst composite consists in repulping the composite in water at a ratio of T: H=1:3-T:H=1:5 with intensive pulp mixing at a stirrer speed of 200-1000 rpm, pulp conditioning with the addition of reagents based on acetylene or higher aliphatic alcohols, flotation of carbon nanotubes in the foam product, washing carbon nanotubes with water, followed by decantation and drying at a temperature of 90-200C.EFFECT: increasing the efficiency and productivity of extracting carbon nanotubes from dispersed carbon-catalyst composite.4 cl, 1 tbl, 1 ex

ethod for flotation concentration of gold-carbonaceous ores // 2630073
FIELD: mining engineering.SUBSTANCE: method involves conditioning gold-carbonaceous ores with depressant as a polycondensation product of sodium naphthalenesulfonate and formaldehyde. After conditioning ores to produce the gold-containing flotation concentrate, copper sulfate is sequentially introduced as an activator, at the end of contact time butyl xanthate as a collector, and then methyl isobutylcarbinol as a frothing reagent.EFFECT: flotation concentration of gold-carbonaceous ores with deactivation of sorption capacity of carbon presented is provided.1 dwg, 2 tbl, 1 ex
Gold-bearing sands enrichment line // 2629722
FIELD: mining.SUBSTANCE: line for the enrichment of gold-bearing sands includes two modules that are successively connected along the material flow. One of the modules is the enrichment module, consisting of a washing table, screening gateway, coarse and fine fraction hydroclassifier, the output of the coarse fraction hydroclassifier is connected to the input of jigging machine which output is connected to the input of the series-connected concentration tables, and their outputs are connected to the jigging machine in which one of the outputs is connected to coarse fraction centrifugal concentrator, the other one is connected to flotation machine, the input of which is connected to the output of the fine fraction hydroclassifier, the output with fine fraction centrifugal concentrator. Another module for finishing the concentrate consists of vibration screen, device for drying the coarse fraction, magnetic separators, jigging machine, centrifugal concentrator, concentration table, cradle, devices for concentrate drying and units for enrichment in ferromagnetic liquid. The module for finishing the concentrate is additionally equipped in series with low pressure autoclave, centrifugal disintegrator and additional magnetic separator installed between the concentrate drying device and a unit for enrichment in ferromagnetic fluid.EFFECT: increased line productivity and extraction of gold.1 dwg, 2 tbl

ethod of production of non-magnetic ores containing non-magnetic particles of a suspension mass flow // 2629181
FIELD: mining.SUBSTANCE: to determine the efficiency of at least one step of the recovery method, at least one indicator indicating the amount of the proportion of ore particles or magnetic particles in the separator feed stream and/or separator flux and/or separator of residual stream is determined. An index indicating the amount of the proportion of ore particles and/or magnetic particles is determined for at least two streams, on the basis of this index, in particular, after comparing the parameters relating to each of the flows indicating the proportion of ore particles and/or magnetic particles, at least one operating parameter of the mixing device and/or magnetic separator is set. The index is compared with at least one limit value indicating the minimum or maximum concentration of ore particles in the separator concentrate stream and/or in the residual stream of the separator. Depending on the result of the comparison, at least one operating parameter of the mixing device and/or magnetic separator is set. The method is carried out by means of a device comprising at least one mixing device for mixing mass flow with magnetic particles, at least one supply device for supplying a mass flow to at least one magnetic separator, at least one separation device for separating ore particles from the separator concentrate stream, at least one recording device for determining at least one index indicative of the proportion of ore particles or magnetic particles in the means of at least one control and/or control device, into the separator stream and/or in the separator concentrate stream and/or in the residual separator stream. The control and/or control device comprises at least one computer-readable software. The software, depending on a certain metric, is designed to control and/or adjust the mixing device and/or the magnetic separator and/or the separation device.EFFECT: increase of extraction efficiency of non-magnetic ores.16 cl, 1 dwg

Electrostatic precipitator // 2627792
FIELD: electricity.SUBSTANCE: electrostatic precipitator includes a housing, precipitating and corona electrodes and high voltage sources. The elements of the corona electrode, depending on the specific electrical resistance of the dust, are made of a belt with a width of 15-400 mm with formed corona protrusions. With a specific electrical resistance of the dust layer on the precipitating electrodes of less than108 Omm, the belt width is less than 100 mm, and with a specific electrical resistance of the dust layer more than 108 Omm, the belt width is 100-400 mm, the elements ofthe corona electrodes can have combinations of different widths.EFFECT: providing the possibility to take into account the value of the specific electrical resistance of the dust entering the electrostatic precipitator and the change in the specific electrical resistance of the dust on the precipitating electrodes along the length of the electrostatic precipitator, and the degree of gas purification by the electrostatic precipitator.2 cl, 3 dwg

Device for oil wastes recycling // 2627784
FIELD: oil and gas industry.SUBSTANCE: device for oil waste recycling contains scroll conveyor body, a auger placed in it, a heater, an additional steam generator. The body of the scroll conveyor in the upper part is made in the form of a rectangular box, the bottom wall of which is made in the form of a porous plate with a porosity of 0.2-0.6, on which a horizontal tube bundle is installed. In the lower part, the body is made in the form of two semi-cylindrical slots installed in parallel and connected along a generatrix of a cylindrical surface. The auger is made in the form of two spirals, each of which is installed in a semicylindrical slot. On the axis of each spiral there is a pipe with a porous wall, which is connected to the steam generator with its input. The output of each pipe with a porous wall is connected to a rectangular box. The heater in the form of a tube bundle is installed from the outside on the conveyor body and is connected to the output of a horizontal tube bundle with its input.EFFECT: reduction of hydrocarbon losses during oil wastes recycling, reduced harmful discharges to environment.4 dwg, 2 ex

Recovery method of gold factories waste pulpes // 2627141
FIELD: oil and gas industry.SUBSTANCE: method involves saturation of the waste pulps with electrolytic gases and electroflotation in the electroflotation strings. The resulting froth pulp is sent to the hydrometallurgical processing. The depleted secondary residues, oxygenated and activated during the electroflotation, containing the underoxidized suspended mineral particles, are subjected to thickening. The sewages formed after the thickening is subjected to electrosorption in two stages. Initially, the industrial precious metals and toxic elements for biota are isolated. At the second stage, the colloidal gold is sorbed with the help of anion exchangers, prepared in CN- and OH- forms. The final solution obtained after the electrosorption is conditioned by pH and after addition of the appropriate complexing agents, it is directed to mine and/or heap leaching.EFFECT: costs reduction.1 dwg, 1 ex

ethod of separation of particles of ground rock sample and polarization separator for its implementation // 2626862
FIELD: mining engineering.SUBSTANCE: separation method is based on the differences in particle responses to the applied electrical field supplied from the source to the electrodes formed by alternating conductive bands of different polarity located between the two dielectric substrates, one of which attracts the polarizable rock particles that separate after the voltage is cut off. To isolate a plurality of sample fractions, a constant polarizing electrical field of a high potential gradient is used, adjustable in magnitude, from a lower value to a larger one by changing the high voltage supplied by the source to said electrodes. The separator contains a system of electrodes, charged by opposite poles by the voltage source, in the form of two branches of interpenetrating, non-intersecting conducting alternating bands forming a flat lattice located between immobile dielectric substrates, one of which attracts polarizable rock particles. Each of the branches is connected to the opposite pole of an adjustable constant high voltage source that is included in the circuit containing the voltage regulator, the generator, the voltage multiplier and its meter.EFFECT: more detailed separation of conductive and non-conductive rock particles, simplification of separation of rock particles, prepared for chemical analysis in laboratory conditions, is provided.6 cl, 3 dwg

ethod of two-current regenerating corona electrodes and electrofilter for its implementation // 2626473
FIELD: electricity.SUBSTANCE: group of inventions refers to the electric dry cleaning of non-corrosive gases from dust with a temperature of up to 425C in non-ferrous and ferrous metallurgy, other industries. In carrying out the method, the corona elements are shaken horizontally by the hammer of the shaking mechanism and the anvil of the corona electrode. The corona elements are shaken in the two-cycle mode. The pulse of the shaking stroke of the second cycle is directed towards the shaking stroke pulse of the first cycle. The corona elements are regenerated in the resonance mode, in which the natural frequency of the corona elements coincides with a frequency inversely proportional to the time interval between the hammer stroke of the shaking mechanism and the jackhammer stroke on the anvils of the corona electrode. The electrostatic precipitator includes corona electrodes consisting of vertical corona elements stretched by loads between the horizontal support and guide frames, an anvil plate at both ends installed in the middle of the corona elements, a shaking mechanism with a hammer. The design is equipped with an additional hammer at the opposite end of the plate and is in contact with the anvil.EFFECT: increasing the regeneration efficiency of the electrostatic precipitator, the temperature gap between the plate and the corona elements is ensured, which makes it easy to mount or dismantle the elements in the event of repair or replacement.5 cl, 2 dwg
Drum for the magnetic separator and the method of its manufacture // 2626082
FIELD: machine engineering.SUBSTANCE: magnetic separator drum contains a cylinder of ferromagnetic material closed at its ends with two flanges that have central rods equipped with bearing and clamping points, on the outer side of the cylinder, a plurality of longitudinal grooves are formed, accommodating permanent magnets arranged in the form of longitudinal rows of one polarity along the magnetic arc approximately 130-160 with alternating polarity NS between adjacent rows. The central rods are located along the longitudinal axis of the cylinder. The cylinder is located within the shell of a non-magnetic material, closed at its ends by two flanges, which have flanged bushings provided with places for mentioned bearings. At least one of the flanged bushings is also provided with means for receiving from the motor of motion to drive the sheath in the form of a gear wheel. The length of one dipole of the magnetic circuit is in the interval between 100 and 150 mm, Is preferably 127 mm. The method of manufacturing a drum for a magnetic separator includes the following steps: a) welding of the flange-covers at the ends of the cylinder; B) fixing the rods around the center of the flanges; C) machining of the cylinder on a lathe to achieve precise alignment of the rods to the outside of the cylinder and the formation of bearing and clamping points on the rods; D) milling of longitudinal grooves on the outside of the cylinder; E) fixing magnets in the grooves; F) the introduction of a cylinder inside the shell and the hermetic mounting of the flanges of the latter. In step d), the grooves are formed at a distance so that the length of one dipole of the magnetic circuit is between 100 and 150 mm.EFFECT: improving separation efficiency.19 cl, 3 dwg
ethod of froth flotation (versions) // 2626081
FIELD: chemistry.SUBSTANCE: method of froth flotation for extracting at least one precious mineral from the mineral ore body, which comprises: adding an enriching amount of collector at least at one stage of froth flotation process. The collector comprises primary or secondary organic ammonium salt of the organic sulfur-containing acid, selected from the group consisting of hydrocarbyl dithiophosphoric acids, hydrocarbyl monothiophosphoric acids, mercaptobenzothiazoles, hydrocarbyl xanthogenic acids, hydrocarbyl thioglycolic acids and hydrocarbyl trithiocarbonic acids. The collector comprising primary or secondary organic ammonium salt of C1-C5 hydrocarbyl dithiocarbamic acid is used using one of the versions of method implementation.EFFECT: increased efficiency of the flotation extraction of precious minerals, reduced hazardous exposure on personnel and environment.25 cl, 1 tbl, 5 ex

Tool for laparoscopy // 2625581
FIELD: medicine.SUBSTANCE: device comprises a safety circuit comprising a detection means to detect presence of a hazardous condition associated with an electric shock, a monostable multivibrator to drive a switching means to turn off a DC power source for a predetermined interruption duration upon detection of a hazardous condition associated with an electric shock, and subsequent cyclic reconnection and disconnection of the direct current source until the dangerous state is eliminated. The monostable multivibrator is designed to attempt to reconnect the DC power supply during the connection and shutdown cycle for a duration less than the predetermined interruption duration. The monostable multivibrator is also configured to restore a continuous supply of direct current to the said circuit prior to the next occurrence of a hazardous condition associated with an electric shock or until completion of the said procedure.EFFECT: efficiency of ionization device control and level of surgical procedures safety are increased.8 cl, 7 dwg
Prevention of foam concentration in the method of reverse flotation for calcium carbonate cleaning // 2625409
FIELD: chemistry.SUBSTANCE: composition contains at least one quaternary ammonium compound that is a collector in the reverse flotation of magnesium minerals from calcium carbonate, at least one antifoaming agent and at least one solvent. The defoamer is selected from the group consisting of alkyl benzenes and at least one ethoxylated alcohol corresponding to the formulas R-O-(A-O)n-H (6) and R-O-(A-O)n(B-O)m-H (7), where n is the number of 1-30, m is the number 1-30, A is C2-C4Alkylene group, B is C2-C4Alkylene group, R is C6-C30 Hydrocarbon group. The amount of component A is 20-60 wt %, the amount of component B is 5-25 wt % and the component C is 15-75 wt %. This composition is used as a flotation reagent in the reverse flotation of silicate minerals of magnesium from calcium carbonate ore. A method for the reverse flotation of silicate magnesium minerals from calcium carbonate ore comprises adding the above composition to a flotation cell containing magnesium silicate minerals and calcium carbonate ore, then passing air through the flotation cell and removing the silicate magnesium minerals obtained in this way by the foam.EFFECT: increasing the efficiency of flotation of silicate minerals of magnesium from calcium carbonate ore.21 cl, 9 tbl, 4 ex
ethod for flotation of refractory complex ores of noble metals // 2624497
FIELD: mining engineering.SUBSTANCE: method of flotation of refractory complex ores of noble metals includes grinding refractory complex ore of noble metals down to 0.1-0.5 mm, directing it to gravitational differentiation with the formation of conditionally called "heavy", "intermediate" and "light" fractions having different physical properties in terms of density, size and morphology of the disclosed particles and mineral phases, and flotation of these fractions in separate cycles to obtain a combined gold-containing sulphide concentrate. Gravitational differentiation is done on screw units with a large area of the separation surface and applying centrifugal forces. With the gravitational differentiation, the outputs of the "heavy", "intermediate" and "light" fractions are maintained close to the percentage ratio of 10:45:45, respectively. The "heavy", "intermediate" and "light" fractions of gravitational differentiation enter flotation in separate cycles in a closed circuit with basic and control operations. If necessary, the "heavy" fraction of gravitational differentiation is re-milled prior to the flotation. If necessary, the combined gold-containing sulphide concentrate is recleaned. The flotation of fractions of gravity differentiation is carried out at a pulp pH of 5.5, a pulp density of 30% solid, a liquid glass rate of 400-500 g/t, a butyl xanthate of 250-300 g/t, pine oil of 70-80 g/t, polyacrylamide when flotation of the "light" fraction is 8-10 g/t with a dosage in control operations twice smaller than the amount of collector and foaming agent, and in recleaning - three times smaller than the quantity of reagents.EFFECT: increase of efficiency of enrichment of refractory complex ores of noble metals with an increase of qualitative and quantitative parameters of processing and reduction of losses of valuable components.7 cl, 2 ex
ethod for producing iron powder from lubrication oil // 2623946
FIELD: metallurgy.SUBSTANCE: method involves heating the lubricating oil, which contains dispersion iron powder particles up to a temperature of 65-90C and subsequent magnetic separation by feeding the heated lubricating oil to the magnetic separator in the opposite direction to the magnet rotation, followed by separation and collection of dispersion iron powder particles coated with an oil film. The dispersion particles are washed with a 3-8% aqueous solution of industrial detergent heated up to 80-90C for 15-20 minutes at constant stirring, left to stand for 30-40 minutes, washed with hot water at a temperature of 80-90C and dried at a temperature of 90-110C to obtain an iron powder in the form of dispersion particles.EFFECT: method provides a reduction in the energy intensity of the process, reducing the labour intensity of the process of obtaining iron powder.2 ex
ethod for flotation separating minerals of heavy metals // 2623851
FIELD: chemistry.SUBSTANCE: method uses a selective collector M-TF, which is a mixture of dithiophosphate and thionocarbamate with a variable ratio of dithiophosphate and thionocarbamate depending on the proportion of pyrite and pyrrhotite in the sulphide ore, on the ratios of copper sulfides and sphalerite varieties in a collective concentrate and selective flotation operations. In the samples studied, copper sulfides are represented by primary and secondary minerals, as well as minerals from the group of faded ores. In the method for the flotation separating minerals of pyrrhotite-pyrite-containing ores as a collector, a combination of butyl xanthate and M-TF reagent is used at variable fraction ratio of the M-TF collector components in various flotation cycles.EFFECT: decreasing the flotation of pyrite, pyrrhotite, increasing the flotation activity of the main minerals of copper - chalcopyrite, bornite and creating conditions for active flotation of tennantite, as well as mineral associations of gold.3 tbl
 
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