Method of determining gold mineralisation of rock formation
SUBSTANCE: method of determining gold mineralisation of rock formation comprises multistage crushing of raw material to fractions of the size not greater than 0.5 mm, the subsequent classification of the resulting material and its processing with bromoform. Classification is carried out by sedimentation with the separation of the material class of -0.05+0.02 mm of water discharges, followed by drying and sieving the remaining material with the separation of the fraction -0.5 +0.1 mm and -0.1+0.05 mm, treating each of the resulting classes with 10-30% alcohol solution of bromoform. Sedimentation is carried out once with the accumulation of sediment for 15-20 min and repeatedly for 3-5 minutes, followed by the integration of the water discharges obtained during it.
EFFECT: increase in reliability of determining of gold areas and determining areas of gold mineralisation.
2 cl, 1 ex
The invention relates to the field of exploration in search operations for gold, as well as the analysis of rocks, ores, by-products and can be used in Geology, Geochemistry to identify gold-bearing areas, identify areas of gold and increase the efficiency of extraction of gold from rocks.
It is known that the main losses in the extraction of placer and lode gold are thin, plate and powdered gold with a particle size from millimeters to a few microns.
According to current estimates at current methods of extracting gold using traditional washing methods, it is lost from 20 to 50% gold. Tightening environmental requirements, such as a ban on the use of mercury, also limits the potential for reducing losses. Another, no less important, aspect of the problem "fine gold" is that it's time to pay attention to a significant number of placers that have accumulated over many decades, containing significant amounts of fine fine gold.
Thus, the urgency of finding an effective technical means and methods for the detection of gold-bearing areas, identify areas of gold and to retrieve such gold from the source of raw materials and products of its processing are obvious.
Known dry method of preparing geological or technological samples of gold-bearing ores and placers to the analysis in order to reduce the cost of the extraction process and increase the reliability of determination of gold rocks. The dry sample containing coarse gold, crushed and sent to a special classifier, made in the form of vertical tubes with upward air flow. Received light fraction dry samples sent for deposition in the subsequently installed centrifugal apparatus, and the resulting heavy fraction - gold concentrate - gospelchor and sent to the processing similar to the processing of the original sample. Then final the gold-bearing concentrate fully, and light fraction after mixing and abbreviations sent for tests.
The disadvantage of this method is its complexity, the need for special equipment - classifiers, moreover, it does not provide retrieval of small fine grains of useful component [RF patent №2372152, G01N 1/00, publ. 10.11.2009].
There is a method of determining the gold content of rocks during search operations on gold, including sampling, chopping, mixing with infusible solid Royal vodka and heating the mixture for 3-5 minutes in a closed TIG is e to obtain wasgone in the form of plaque on the walls of the crucible. The result of the presence in the sample of gold is judged visually by yellow and/or orange color of the specified RAID [application for the grant of a patent of the Russian Federation No. 2007148258, G01N 1/00, publ. 27.06.2009].
However, this method does not provide the reliability of the results and does not provide retrieval of small fine grains of useful component.
In recent years, there has been a wide proliferation of new methods of studying rocks, among which a special place is occupied by method of heavy fractions or artificial concentrates, allowing study of accessory minerals of igneous rocks.
Known selection scheme accessory minerals of basic and ultrabasic rocks, taken as a prototype, the proposed Liakhovich VV [Methods of separation of accessory minerals. - M.: Nedra, 1981. - 86 S.].
The chemical composition of accessory minerals is that they contain elements that are present in the breed in very small quantities, but they give a more full and perfect understanding of the studied rocks.
The method includes crushing of the raw material to a fraction of not more than-0.5 mm by multi-stage crushing with otstavnoi small fraction of each cycle after the crushing, otmuchivanie from dust and drying of the material, followed by electromagnetic separation on a non-magnetic and magnetic fractions. Further isolated and the electropneumatic and rock-forming minerals from non-magnetic fraction, conduct division bromoform on heavy and light fraction.
Light fraction addition gospelchor have otstavke and szlifowane, is subjected to electromagnetic cleaning and lapping up monomineral fractions.
The heavy fraction is subjected to separation by heavy liquids to obtain different density mineral concentrates, conduct electromagnetic cleaning and lapping up monomineral fractions.
The magnetic fraction is subjected to electromagnetic separation on magnetic and signmagnitude faction with the release of rock-forming minerals.
The fractions obtained are subjected to separation by heavy liquids and Ligovka in bromoform.
Many of the listed sequence can be repeated many times in different sequences.
The technique allows you to set a variety of the species composition of ore minerals, but very complex in execution. Moreover, the technique is not designed to work with "thin” classes, ultramarine fractions order to-0.05+0.02 mm, which may contain gold and other valuable items from the rocks.
This scheme also stated V.V. Mikhailov, V.V. Gordienko. "Simple laboratory methods allocation monomineral fractions": Textbook.-method. allowance, S.-Petersburg Academy of Sciences. state University, 2012, p.24-26.
The objective of the invention is one is to simplify the method of selection of accessory minerals from rocks and ensuring allocation ultramatic fractions useful component,
The technical result is to increase the reliability of detection of gold-bearing areas and identify areas of gold
The problem is solved in that in the method of determining the gold content of rocks, including multi-stage crushing of the raw material to a fraction of not more than-0.5 mm, the subsequent classification of the material obtained and the processing of bromoform, this classification are by sedimentation separating material class -0,05+0.02 mm of water discharges, followed by drying and sieving the remaining material emitting fractions of 0.5 to+0.1 mm and -0,1+0.05 mm, and processing each of the derived classes 10-30% alcohol solution of bromoform.
Sedimentation lead once the accumulation of sediment within 15-20 min and repeatedly within 3-5 min, followed by combining the resulting water drains.
Sedimentation is a method of separation by size (size) clay fractions, taking into account the time of deposition of the material. The inclusion in the scheme of this phase separation, increases the reliability of the content of the desired minerals (gold) by collecting ultrafine fractions. Ultrafine fraction relevant now, because the new instrumental methods (instrumental, methodological and so on) provide the opportunity to study them.
It is known that at wash in bromoform fine grains of gold is not wetted and sail away to the left. To avoid this, it is proposed class -0,05 and -0,1+0,05 to wash in the washing of bromoform (alcohol+10-30% of bromoform), where and are supermarche "gold particles".
A sample of the investigated material is a sulfide ore weighing 200 g (sample can be of any complexity in composition) crushed to a fraction of not more than-0.5 mm by multi-stage crushing followed by sedimentation
Pour a sample of distilled water from the condition that the height of a water column corresponded to 20-25 cm, mix and stand for no more than 15-20 min 15-20 min larger class -0,05 mm is precipitated, and smaller still in suspension. Suspension is drained, the resulting merged suspension remained particles less than 0.02, suspension defend, analyze sediment.
Then re-fill the sample with distilled water, mix and stand for no more than 3-5 minutes, the Procedure was repeated more times to "clean water" (repeating the process depends on the quality of the source material - samples)
Water plum unite, defend, the precipitate is separated and dried. The result is a material with a weight of about 2 grams small (ultramega) -0,05+0,02 sediment.
After that, the remainder of the sample is dried and rasshivaetsya, resulting in a derived class 0.5 to+0.1 mm and -0,1+0,05 mm After drying and dispersion receive hinge 60 and 130 grams, respectively.
Further blur each of you is Alannah classes in an alcohol solution of bromoform (alcohol+10-30% of bromoform) receive:
class -0,5+0,1 - gold is not found
class -0,1+0.05 to about 10 grains of gold
in class,0,05+0,02 - 10-11 grains of gold obtained in ultramega sought class)
The proposed method can be used to analyze any stone material. Samples can be mineral composition more or less complex, depending on the amount of minerals, their relationship (intergrowth), etc.
When using only one sieving, and without conducting sedimentation, loss ultramega class, the most informative for the prediction of gold squares.
As a result, the method allows to select ultramercial fraction of gold, which certainly increases the reliability of detection of gold-bearing areas and identify areas of gold. Moreover, the method becomes cheaper.
The proposed method can be applied in the field, in this case, increasing the efficiency (focus) prospecting, because at the place specified area most promising sites.
1. How to determine the gold content of rocks, including multi-stage crushing of the raw material to a fraction of not more than-0.5 mm, the subsequent classification of the material obtained and the processing of bromoform, characterized in that classification are by sedim is ncacii separating material class -0,05+0.02 mm of water discharges, subsequent drying and sieving the remaining material emitting fractions of 0.5 to+0.1 mm and -0,1+0.05 mm, and processing each of the derived classes 10-30% alcohol solution of bromoform.
2. The method according to claim 1, characterized in that the sedimentation lead once the accumulation of sediment within 15-20 min and repeatedly within 3-5 min, followed by combining the resulting water drains.
SUBSTANCE: method of preparing standard aerosol samples based on a mixture of fine powder containing defined elements is characterised by that a dispersed mixture of mineral, synthetic and biological materials is used, wherein grain size analysis is used to detect presence of said types of simulating materials and content thereof in a real atmospheric suspension in said region as applied to a specific season is determined.
EFFECT: providing maximum similarity of simulated atmospheric suspensions for different regions and conditions.
SUBSTANCE: reference sample comprises a metal base with a central zone of reference complex stressed condition through the base thickness. At the edges of the base at one or different sides there is one or several zones of pad welds from another metal, coefficient of linear expansion and yield point of which is lower than the coefficient of linear expansion and yield point of the base metal. The base is first exposed to high-temperature tempering, afterwards control marks or a grid of measurement bases are applied onto surfaces of the central zone of the base at two sides, for two test measurements after high-temperature tempering of the base before applying pad welds and in the end of thermal treatment of the base already with pad welds. The form of the base, locations of pad welds and the mode of thermal treatment are defined in advance as a result of computer simulation modelling by the method of finite elements with account of grades of the base metal and pad welds metals and the required reference complex stressed condition of the central zone of the base through its thickness.
EFFECT: increased validity of results of measurements of mechanical stresses in cross sections of various thick-walled metal structures.
2 cl, 5 dwg
SUBSTANCE: device consists of a housing, the electric motor with a shaft, and the storage cylinder-borer. At that the electric motor with the shaft is mounted inside and along the vertical axis of the housing, made in the form of a triangular truss consisting of the upper and lower belts which are interconnected by racks having vertical grooves for guides mounted inside the truss perpendicular to the racks with the ability of vertical movement along them and connected to the housing of the electric motor, equipped with handles extending outside the housing. At that, the electric motor shaft is provided with a magnetostrictive oscillator and has at the end a telescopic rod for removable storage cylinder-borers selected depending on the type of soil.
EFFECT: increased productivity of soil sampling and enhanced functional capabilities.
SUBSTANCE: method includes collecting gases in a sampler and subsequent analysis of the sample material. The sampler is insulated from the ambient environment and a portion of distilled water is added, wherein a suspension of solid particles of the exhaust gas is formed by releasing said particles into said portion of water. Formation of the suspension begins after removing foreign dust and soot particles from the exhaust pipe that have settled there when the internal combustion engine is idle. During sample collection, the suspension is mixed and a sterile syringe is used to collect about 40 ml of liquid, which is then analysed on a laser particle analyser to determine particle size and shape distribution therein. Substance analysis of the suspension is then carried out on a light microscope and electron microscope with an energy-dispersion spectrometer for determining material composition of the solid particles and size and shape distribution of said particles.
EFFECT: determining content of nanodispersed and microdispersed solid particles in exhaust gas.
SUBSTANCE: first, selected are directions for elastic wave propagation directions uniformly distributed over the entire volume of specimen to measure propagation speed and to define the length of every direction. Ultrasound pulses excited in specimen are radiated therein at the start of every direction. Elastic wave travel time is defined for every direction to define the means propagation speed in every direction using obtained elastic wave length and travel time. Then, said specimen is deformed to preset magnitude in stepwise manner, via preset time intervals. At every deformation step, said mean propagation speeds are defined for every directed as described above to define mean propagation speeds for separated part of specimen volume by the method of nuclear Gaussian functions with averaging radius of at least 5 mm. Calculations at every deformation step are displayed as the projection of the specimen vertical section with at least 5 mm deep layer with dyeing of projection sections by different colours proportional with calculated speed difference for said sections between current and previous deformation steps to make conclusion of specimen density variation.
EFFECT: higher-quality and more detailed picture of compaction and destruction zones.
4 cl, 4 dwg
SUBSTANCE: wings of ilium are punctured in an anterior and posterior one-third of the wings with two trocars being inserted into each wing. The bone marrow (BM) is collected by simple aspiration, aspiration irrigation or a combination thereof at an underpressure of 0.6 Atm with using a device. The bone marrow preparation device comprises a disposable multi-channel closed system, an aspiration collection unit and a perfusion unit. The group of inventions also refers to a method for assessing the prepared bone marrow. The effect is ensured by automatic control of myeloaspiration by preparing a biological material with using a special designed device for the bone marrow collection.
EFFECT: using the given method for preparing the bone marrow provides preparing the sterile bone marrow rich in viable multipotent mesenchymal stromal and hemopoietic progenitor cells.
7 cl, 1 ex, 1 dwg, 1 tbl
SUBSTANCE: method of zinc extraction from bottom sediments with an ionic liquid includes preparation of an analytic sample. Extraction of zinc from the solid sample is performed with application of the ionic liquid 1-butyl-3-methylimidazolium hexaphosphate with additives of ammonium thiocyanate and potassium iodide with further quantitative determination of zinc (II) ions in a concentrate of an organic phase of the ionic liquid.
EFFECT: providing degree of element extraction close to one hundred percent.
1 dwg, 2 ex, 2 tbl
SUBSTANCE: invention relates to a cartridge for a bioanalytical reaction device. The cartridge contains at least one chamber for a sample, which has a wall, through which the said sample can be processed or analysed by the bioanalytical reaction device. The cartridge also contains a case and a platform, and the platform contains the said at least one chamber for the sample and is connected with a possibility of travel with the case in such a way that the platform is able to move between the removed position, in which the wall is protected by the case, and the protruded position, in which the wall is outside the case, by putting operating means in action. The bioanalytical reaction device has a slot for reception of the cartridge, and contains an operating device for moving out and removal of the platform.
EFFECT: technical result which is achieved lies in provision of protection of the sample from contamination and damage without excessive complication of the cartridge construction.
15 cl, 5 dwg
SUBSTANCE: system comprises at least two samplers installed in the holes of a bearing element set on a vessel casing. Every sampler is fitted by a tubular lead-in part on the inner installation side of the bearing element and a discharge part on the upper side of the bearing element having sections for hydraulic or pneumatic valves to be connected. Lead-in parts are of different length. The bearing element is made as a removable flange with the holes in it being connecting ports. Each tubular lead-in and discharge parts are made as separate elements. The discharge part is coupled with the connecting port permanently and the tubular lead-in part is coupled with the said port by a detachable joint. Tubular lead-in part of each sampler is made as tubes of lower, middle and upper levels installed in the flange hole on the flange installation side by means of a detachable joint.
EFFECT: universality of a unit due to the possibility of its usage in vessels for fluid products of different types.
10 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to supervision of vehicle operating conditions and estimation of harmful emissions. Sampling device comprises sampler connected with exhaust pipe via inlet pipe, sampling resilient chamber arranged in portable appliance and checkout hardware. Said sampling resilient detachable chamber is equipped with remote control shutoff element. Detachable appliance is equipped with the branch pipe with outlet located in one plane with sampler end. Inlet pipe has rotary mechanism for connection with the next sampling resilient chamber and valve to shut off the ICE off-gas ingress into inlet valve. Note here that every sampling resilient chamber has a contact mechanism of sampling outage at filling the entire volume of said chamber. Besides, portable appliance has inner cooling shell and cooled duct for off-gas passage from vehicle exhaust pipe. Said checkout hardware is composed of processor connected with rotary mechanism. The latter connected the next sampling chamber with the device inlet pipe and valve that shuts off ICE off-gas flow into inlet pipe.
EFFECT: off-gas sampling under whatever operating conditions, ruled out occurrence of secondary chemical reactions.
SUBSTANCE: proposed process comprises ore screening, magnetic separation to obtain magnetic and nonmagnetic fractions, grinding, hydraulic classification, thickening and drying. Martite ore is first subjected to screening with separation to three size classes, i.e. coarse, intermediate and fine. Coarse class is directed to sensory separation to obtain tails and concentrate to be additionally ground and screened to intermediate and fine classes. Intermediate class is conveyed to metallurgical processing while fine class is subjected to pelletising. Hydrohematite ore is first subjected to screening with separation to three size classes, i.e. coarse, intermediate and fine. Coarse class is directed to sensory separation to obtain tails and concentrate to be additionally ground and screened to intermediate and fine classes. Intermediate class is conveyed to metallurgical processing. Portion of fine class is directed for pelletising while another portion is directed to magnetic separation, its magnetic fraction is fed for pelletising. Nonmagnetic fraction is ground with mixing by grinding medium and directed to hydraulic classification of the first stage. Classification sands are returned to the mill. Sink is fed to second stage of classification, its sink being used as 3rd grade pigment after thickening and drying. Sands of second classification are fed to second stage of grinding with mixing by grinding medium. Product ground at second stage is subjected to 3rd stage hydraulic classification, its sands being dried and used as 2nd grade pigment. Thereafter, sink is thickened, dried and used as 1st grade pigment.
EFFECT: simultaneous production of several grades of iron oxide pigment and finished stock for metallurgy.
2 cl, 1 dwg, 1 tbl
SUBSTANCE: invention relates to the field of dressing of hard minerals, namely, to methods for enrichment of rare-metal ores. The method of dressing of eudialyte ores includes application of electromagnetic separation in intense field with separation of nepheline-feldspar concentrate into non-magnetic fraction and subsequent electric separation of magnet fractions with production of aegirine and eudialyte concentrates. In the head of the process they perform separation of ore with total secondary characteristic radiation Kα1-series of elements of strontium, yttrium, zirconium and niobium in the energy range of 13.0-17.5 keV.
EFFECT: increased efficiency of extraction of eudialyte concentrate, reduced costs for grinding and crushing of ore, and also reduced quantity of cleaning operations.
1 dwg, 1 tbl, 1 ex
SUBSTANCE: invention relates to concentration of minerals and can be used to increase the yield of valuable products, particularly, zinc and lead, by flotation. Proposed method comprises flotation, processing of pulp-bearing solution by pulse discharges and precipitation of solid phase. Processing of pulp-bearing solution is carried out by pulsed high-voltage discharges of specific energy of 8.6-11.2 kJ/dm3 fed directly into pipeline communicating flotation machine with settle-thickener. Action of pulsed high-voltage discharges is brought about provided that: R/Ro=10.4 where: R is the radius of efficient wave effects; Ro is the spacing between electrodes and R.
EFFECT: higher intensity and rate of deposition of disperse particles from foam after flotation.
2 cl, 3 dwg, 1 tbl
SUBSTANCE: method includes treatment of coal extracted from coal deposits for opening of its splices with rock. At the same time the coal is placed in layers at the intermediate storage, arranged on the southern slope of a knoll (mountain, hill) or a pit heap, the site of which has an angle of inclination 10-25°, exposed in spring-autumn periods to solar radiation with the number of "thawing-freezing" cycles with transition of temperature via 0°C equal to at least 7. Besides, the thickness of the coal layers is taken on the basis of the calculation sufficient for daily heating-cooling, and after thermal processing the coal is shipped from the warehouse for subsequent demineralisation.
EFFECT: increased opening of coal splices with rock.
FIELD: machine building.
SUBSTANCE: proposed machine comprises cylindrical housing, initial material feed pipe, material discharge pipe and rotor drive. Initial material distributor composed of fixed cone is arranged directly above the rotor. Circular flanges are arranged at housing sidewall while fine dusty fraction discharge pipe is arranged at housing top section. Rotor fitted on the shaft in said housing is shaped to cylinder in height equal to rub-off zone and equipped with radial blades. It includes industrial blower is communicated with pipe discharging the fine dusty fraction along with airflow. Initial material feed pipe is arranged directly above initial material distributor. Finished product discharge pipe is arranged at housing bottom section.
EFFECT: higher efficiency of rubbing-off and separation.
FIELD: process engineering.
SUBSTANCE: invention relates to combined methods of separation of solid materials, particularly, to processing of radio electronic scrap. Proposed method comprises primarily two-step separation of solid materials by hammer crushers to required size, magnetic and screen separation of ground scrap with subsequent pneumatic classification by bulk density of oversize and undersize products of screen classification. Note here that ground scrap fraction of boundary size obtained at pneumatic classification is subjected to additional grinding at ball mill to size of nonmetallic component of not over 1 mm. To isolate metallic component of processed scrap aforesaid ground fraction is subjected to pneumatic classification by bulk density.
EFFECT: higher efficiency of processing.
FIELD: process engineering.
SUBSTANCE: invention relates to mining and can be used for extraction of valuable components and products of their processing, particular, for extraction of copper, nickel and iron sulphides and noble metals from aged tailings of suspended tailing pit of in cryolite zone of Norilsk deposits. Dressing module comprises open-pit field, two or three dredges, beach pump station consisting of stationary and vibratory screens, sunk basin with overflow pocket communicated by gravity feed hydraulic transport with open-pit field. Besides, it comprises two pump, pressure five-jet pulp separators communicated with vibratory screens, sunk basins and pump communicated with batteries of desliming 250 mm-dia hydraulic cyclones with their sand outlets connected via sunken basins and controlled-delivery pumps with said pressure five-jet pulp separators and, further, with rotary separators. Tailings from the latter are communicate by gravity feed hydraulic transport via appropriate sunk basin and controlled-delivery pump with mechanical camber flotation machine consisting of 130 m3-chambers. Concentrate outlet is communicated with appropriate sunk basin and controlled-delivery pump and, further, with pneumomechanical camber flotation machine consisting of four first-cleaner 17 m3-chambers. Concentrate outlet is communicated with appropriate sunk basin and controlled-delivery pump and, further, with pneumomechanical camber flotation machine consisting of four second-cleaner 8 m3-chambers. Module includes one or two giant jets installed in open-pit field lane, distribution box to direct portion of warm desliming drains by gravity feed hydraulic transport to open-pit field to accelerate tailing thaw and wash-off at two or more point of the pit and further direction to pit lane, screens mounted at beach pump stations, said screens feature 12-16 mm square meshes. Main flotation chamber has three chambers. Desliming hydraulic cyclones feature two cones with 20-10 deg-taper angle. Beach pump station sunk basin overflow pocket is additionally communicated by gravity feed hydraulic transport with two or three points of open-pit working board to return excess pulp into lane and to accelerate tailing thaw and wash-off.
EFFECT: higher yield and quality of flotation, decreased losses of valuable elements.
FIELD: process engineering.
SUBSTANCE: set of invention relates to concentration of minerals and can be used at coal dressing plants. In compliance with first version, proposed plant comprises pulp feed line connected with inlet of first hydraulic cyclone for slurry classification with its sand outlet connected to first stage helical separator inlet. Said plant is equipped with second hydraulic cyclone for thickening of fine concentrate and helical separator of second stage. First stage helical separator outlet for concentrate is connected with arched screen inlet with its undersize outlet connected with fine concentrate sump. Sump fine concentrate outlet is connected with second hydraulic cyclone with its sand outlet connected with second stage helical separator inlet. Second stage separator fine concentrate outlet is connected with centrifuge inlet. Oversize screen outlet is connected with the same inlet of centrifuge. Centrate outlet of centrifuge filtration section is connected with fine concentrate sump. Centrate outlet of centrifuge precipitation section is connected with high-ash sludge sump. Note here that outlets of both cyclones and outlet of second stage separator are connected wit appropriate lines of feeding drainage into thickener. In compliance with second version, proposed plant incorporates no second stage helical separator while peck outlet of second cyclone is directly connected with centrifuge inlet.
EFFECT: extraction of coal particles sized to 0,04-1 (2) mm in one process step.
4 cl, 2 dwg
SUBSTANCE: processing method of potassium production wastes involves stage hydrocyclonage of wastes in the form of slurry pulp with separation of preliminary concentrate and pulp of tail ends. Then, dehydration, preliminary drying, granulation and drying of preliminary concentrate is performed so that concentrate is obtained. With that, hydrocyclonage is performed in four stages on 10, 7, 5 and 5-degree hydrocyclones with pulp temperature of 40÷50°C, under pressure of 3÷5 atm at the ratio of unloading-to-drain head pieces, which is equal to (1.14÷1.17):1. Granulate is dried at 150÷200°C. After drying is completed, granulate is annealed at the temperature of 650÷950°C so that roasted product is obtained. After preliminary concentrate is separated, pulp of tail ends is clarified, and thickened part is returned to the processing process to the first stage of hydrocyclonage.
EFFECT: maximum waste utilisation; final waste utilisation product can be used as complex fertiliser of prolonged action, which is ensured with peculiar features of its composition and the state gained during waste processing.
FIELD: oil and gas industry.
SUBSTANCE: method for obtaining and using products of hydraulic borehole mining involves drilling of production wells, water jet destruction of mine rock massif in the mineral deposit, hydraulic lifting along the well to the day surface of mine rock material, hydraulic transportation of mine rock material and its output in the form of a vertical fan-like pulp flow to the depositing site, catching from the pulp flow of a heavy ore-containing fraction, drainage of a hydraulic mixture of sand and clay via a drain channel to a sediment pond, clarification of water in the sediment pond, return of clarified water to a return water supply diagram of production wells. After gravitational separation on the depositing site of fractions of mine rocks, a turbulent flow of hydraulic mixture of sand and clay along spiral trajectory from the drain part of the depositing site is supplied by gravity tangentially to a hydraulic cyclone, where sand is deposited in an accumulating sump, where from it is pumped out by a pump. Water-clay mixture is supplied by gravity to a coagulation capacity, where accelerated deposition of clay into the accumulating sump takes place under action of gravitational forces, physical field and chemical reagent, where from it is pumped out by the pump. Clarified water is supplied by gravity to the return water supply diagram of production wells. Separated sand fraction is supplied to working face of production wells as an abrasive component of the jet and used for strengthening and disintegration of hard mine rocks. Separated clay fraction is used during drilling of production wells containing drilling and plugging compounds. The method is implemented by means of a device comprising a production well, a transport pulp line, a depositing site, a catcher of heavy ore-containing fraction, a transport system of water jet mixture of sand and clay. It includes a hydraulic cyclone and a coagulation capacity, which are made in the ground, near the lateral side of the depositing site. Wall of end face side of the drain part of the depositing site is made in the form of an opening branch of a spiral, the centre of which coincides with hydraulic cyclone centre.
EFFECT: improving efficiency of primary benefication of minerals on a production field at hydraulic borehole mining.
8 cl, 4 dwg
FIELD: concentration of minerals.
SUBSTANCE: proposed method includes disintegration of dust at simultaneous preparation of pulp and removal of foreign admixtures; operations are performed in scrubber-washing drum. Then pulp is admitted to pulp line in counter-flow; aeration of pulp is performed in pulp line by means of air bubbles of one size and duration of life no less than 1-2 minutes; proposed method includes also forming standing acoustic waves perpendicularly to pulp flow at frequency ωac corresponding to resonance frequency ω0 of air bubbles of one size 10. Action of centrifugal and acoustic fields on pulp is performed in acoustic chamber at hydrostatic pressure of 4-5 atm. Acoustic field is formed in acoustic chamber by waves of final amplitude at frequency ωac corresponding to resonance frequency ω0of air bubbles of one size 10 by means of acoustic radiators smoothly distributed over surface of acoustic chamber.
EFFECT: enhanced efficiency of entrapping fine gold.