Dressing module for combined processing of permafrost tailings from dressing of impregnation copper-nickel ores of norilsk deposits

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.

1 dwg

 

The invention relates to the mining industry and can be used for recovery of valuable elements from ores and products of their processing, in particular for the extraction of copper sulfides, Nickel, iron and precious metals (mineral and diffuse forms), from old tailings suspended tailings located in the permafrost zone of the Norilsk industrial district.

Known processing module for processing of gold-bearing ores in which the course of the process set are interconnected by means of transport slurry, vibrating screen, sump-pumps, hydrocyclones, arc screen, centrifugal concentrators, tail gateway (RF patent 2211731, CL VV 7/00, 9/00, published. 10.09.2003.)

The disadvantage of this module are big losses subtle and powdered gold flotation size and lack of technical capabilities of the stabilizing power source centrifugal separators by volume of the slurry and solids.

Also known module for enrichment tailings material, including dredge, still crashing with the size of the holes of the mesh 15 mm, fullpotential, vibrating screen hole size of the mesh of 1.5 mm, fullpotential twin pumps, two hydrocyclone battery, pump, palestrini fullpotential, concentrate the market, deletestring fullpotential, electromechanic photomachine. (Blagodatin J.V., Yatsenko A.A., Zakharov B.A., Chegodaev E, Alekseeva LI involvement in the processing of new sources of raw materials of non-ferrous and noble metals. Non-ferrous metals. 2003, No. 8-9. p.28-29).

In the known method the efficiency of the module depends on the stability of the feed slurry, which is determined by many factors, in particular continuous in time the operation of the dredge, and when it moves in the pit under the scheme with swivel-rotary piling speed (or any other scheme) compulsory process stops parasecoli piles, move anchors, etc. (Noroc GA Processes and technology dredging of surface mining. M, Depths. 1985 s-186), planned maintenance and outages due to falling into groundsamine device cutters foreign objects. For these reasons, in the power module reduces the amount of slurry and solids in it. The surface of the fixed roar hammered macro-grained rock rocky soil, which covered the surface of the tailings to prevent pilipinos and wind erosion, which also lead to a decline in the volume of pulp in the manufacturing process of the module. Gravity sump valve distribution system of the pulp, results in an uneven distribution of the volume of ulpi on screens, the battery of hydrocyclones, centrifugal separators, and as a result, the overflow of pulp on the screen, the pressure loss of the pulp at the entrance to the battery of hydrocyclones preliminary classification, the loss of quantity and quality of concentrate centrifugal separators.

In these conditions parallel washing of nine mechanical flotation devices, with the volume of each chamber 16 m3that is not possible with enough reliability to stabilize the level of the pulp in the flotation devices, which leads to irreversible damage of non-ferrous and noble metals with final tailings flotation.

From the above it follows that the disadvantages of this method are:

- instrumentation module is not possible to stabilize the power source of technological operations on solids, the volume of the pulp;

- no reserve dredgers to conduct short-term preventive and long-term repair work;

- the impossibility of uniform distribution of the pulp for screening and centrifugal enrichment using gravity jumptv;

significant fluctuations in the level of slurry in the cells of flotation devices result in the irreversible loss of valuable items.

Closest to the claimed technical solution is the module with the technological cycle, including basic OBOGATITEL the basic operations, inherent in dressing plants large capacity, and which includes: career field, two or three vessels; the onshore pumping station consisting of stationary and vibrating screens, sump with overflow pocket provided with career field, two pump with adjustable flow rate; pressure Palestrina polymodality; vibrating screen; zumpfe and pumps provided with batteries bessemoulin hydrocyclones; Sands battery of hydrocyclones through zumpfe and pumps in communication with the pressure palestrini polypodiaceae and then with centrifugal separators; tails centrifugal separators communicated with the sump and the pump, and then with mechanical photomachine, consisting of five cameras on 130 m3each and fed sequentially; concentrate five cameras mechanical photomachine communicated with the sump and pump with adjustable flow rate and further communicated with the mechanical photomachine, consisting of four chambers (the first cleaners) to 17 m3each and fed sequentially; concentrate four chambers electromechanic photomachine communicated with the sump and the pump is further communicated with a mechanical photomachine, consisting of three chambers (the second cleaners) 8 m3each and fed sequentially; the tails of the second peredishki gravity communicated with p the pout camera first peredishki, and the tails of the first peredishki communicated through the sump and the pump with the first camera 130 m3photomachine. Concentrate centrifugal separators and flotation concentrate of the second peredishki communicated through the sump-mixer with a high-pressure pump (patent RF 2 376069, CL 2. Published. 20.12.2009,) Prototype.

In the known method the efficiency of the module depends on the uniformity of the feed pulp from the career fields in the technological process, despite the fact that career field has 2 or 3 dredger, speed defrost tails in the bottom dredgers low and does not allow to maintain the target performance number of solid, even with a partial return of pulp from the onshore pumping station in the career field to defrost and washout tails.

For desliming pulp, before subsequent operations centrifugal concentration and flotation uses standard one-cone hydrocyclones with a diameter of 250 mm with a cone angle of 20 degrees (the Reference enrichment of ores. Preparatory processes. Edited by O.S. Bogdanov. M..., "Nedra", 1982, p.189), the use of such hydrocyclones, leads to sharp fluctuations in the density of the pulp in the Sands of hydrocyclones, when a sudden change in density power hydrocyclones (Cooks A.I. Hydrocyclones concentrators. M., "Nedra", 1978, p.83).

Maintaining an optimal level pool is dust in sumpah pumps, due to the return side drains hydrocyclones, leads to accumulation of sludge in the circulation contours - sump - pumps, hydrocyclones, ultimately, increases the amount of sludge in the Sands of hydrocyclones, which leads to sedimentation and the press-fitting the annular grooves of the centrifugal separators and as a result, reduces the quality of the concentrate is not only centrifugal enrichment, but the main flotation concentrate.

This Deposit is located in the permafrost zone. Base metal sulfides (pyrites - hexagonal and monoclinic, pentlandite, chalcopyrite), minerals of noble metals and their intergrowths with sulfides in the tailings pond treated with reagents in ore beneficiation and are without exogenous changes of the surface, (Dodin D.A., Izoitko VM and other man-made deposits shows of platinum-metal raw materials of the Norilsk region. Sat. scient. works. Platinum Russia. Moscow. AOZT Geoinformmark", 1994 str, 137.), therefore, the conditioning of the pulp in contact Chan before the main flotation does not affect process performance.

Tails after desliming and secondary enrichment (centrifugal separators and flotation) contain the minimum quantity of sludge and can be used for the construction of environmentally friendly dam existing dam. The slurries contain minerals, smectites, the particle size is which is less than 1 μm and which when wetted with increase in volume up to 10 times (A.A. Godovikov Mineralogy. M, Depths. 1983 str). Reducing the number of smectites can reduce flexibility and increase the angle of internal friction tails 10-15% and, ultimately, to increase the strength of upstream array (dam) 15-20% (lolev A.B., Butwhen CENTURIES Geoecological problems of industrial engineering in permafrost. Moscow. The subsoil. 2005 str).

Part drains hydrocyclones with a low solids content, in addition to warm water (coolant) can be sent in the career field to defrost, erosion and transport of tailings in the lane with dredgers.

In the section of the tailings in the vertical plane, the content of non-ferrous and precious metals in 3-4 times higher than the minimum value, due to the different metal content in the mined ore for the period of operation of the tailings storage facility, storage technology, interlayering of tailings and horizons, lenses ice (Dodin D.A., Izoitko V.M. Superlarge man-made deposits of platinum metals. The enrichment of ores. 2006, No. 6, p.20, 2 p.20). In this regard, technologically, you must be able to adjust the amount of concentrate and the main flotation order to obtain stable metal content power cleanings.

From the above it follows that the disadvantages of this module are:

- the instrumental is oformlenie module does not allow to reliably stabilize the original power of technological operations on solids, the volume of pulp due to the low speed defrost tails in the bottom of the vessels and their transport from the sides career fields in the lane;

- the use of standard hydrocyclone with a cone angle of 20° leads to significant fluctuations in the Sands of hydrocyclones density in the power of centrifugal separators and flotation;

- the return part of the drains of the hydrocyclones in zumpfe pumps to maintain the pulp level, leads to the accumulation of sludge and the violation of technological process;

- air conditioning of the pulp in contact Chan before flotation does not technological effect, as the sulphides of non-ferrous metals, minerals, precious metals treated with reagents in ore flotation and their surface after long-term storage in permafrost not affected by exogenous changes;

- warehousing coarse-grained part of the tails with a minimum content of smectites in the southern part of the same tailings, and you need to use them for the construction of environmentally friendly dam of existing tailings;

- the absence of a system for thawing, erosion and transport of tailings warm plums bessemoulin hydrocyclones in the lane career field;

- lack of operational opportunities to reduce or increase the time the main flotation and the amount of concentrate with this operation, when low or high is the metal content in the original tails, due to the number of active cameras of the main flotation flotation devices, which are fed in sequence.

Object of the present invention is to reduce the irreparable loss of valuable items with flotation tailings, reducing the number of minerals of the smectite in the dump tails. The technical result is increased productivity, yield and quality of the concentrate due to further stabilize the power equipment concentrator by volume of the slurry and the amount of solid. Increasing the strength of upstream array of dam existing dam.

The solution of this problem is achieved by known processing module, which includes career field, two or three vessels; the onshore pumping station consisting of stationary and vibrating screens, sump with overflow pocket provided with career field, two pump with adjustable flow rate by changing the number of revolutions of the motor; pressure Palestrina polymodality; vibrating screen; zumpfe and pumps provided with batteries bessemoulin hydrocyclones, and the pressure at the entrance to the hydrocyclones is optimal due to changes in speed of the motors of the pumps, and by decreasing the level of the pulp in sumpah, the level is maintained within the specified limits the return part SL is Bob hydrocyclone; Sands battery of hydrocyclones through zumpfe and pumps with adjustable flow rate communicated with the pressure palestrini polypodiaceae, and then with centrifugal separators; tails centrifugal gravity separators slopes reported contact Chan, contact Chan communicated with the sump and pump with adjustable flow rate, and further with the chamber photomachine made mechanical from five cameras to 130 m3each fed sequentially and the output of concentrate which is communicated with the sump and pump with adjustable flow rate and further communicated with the contact tank and the mechanical photomachine, consisting of four chambers (the first cleaners) to 17 m3each and included in the circuit in series; concentrate four chambers electromechanic photomachine communicated with the sump and pump with adjustable flow rate and further communicated with the mechanical photomachine, consisting of three chambers (the second cleaners) 8 m3each and included in the circuit in series; the tails of the second peredishki communicated with the first chamber of the first peredishki, and the tails of the first peredishki communicated through the sump and the pump with the first camera 130 m3photomachine. Concentrate centrifugal separators and flotation concentrate of the second peredishki communicated through the sump-mixer with vysokonaporny the m pump which pumps out the total concentrate module in the hydraulic system, according to the invention in the main career fields are installing one or two floating giant; on-shore pump station installed on it by viberating screen with a grid with the size of the square hole with a party of 12 to 16 mm, sump, overflow pocket, communicated with gravity hydrotransport with career field for faster thawing, erosion of tailings at two or three points of the pit and their transport to the main; install double conical hydrocyclones with a diameter of 250 mm with a cone angle of 20 and 10 degrees for desliming pulp and create a density of sand (at the same time thickening) of the respective regime map for subsequent technological operations centrifugal concentration and flotation; increase or decrease the amount of concentrate change the time, the main flotation depending on the content of non-ferrous metals in the source power, at the expense stop cameras or lowering the level of the pulp in the second or third cameras, or simultaneously in the second and third; part warm discharges bessemoulin hydrocyclone through the junction box provided by a gravity hydrotransport with career field for faster thawing, erosion of tailings at two or three points of the pit and their guide is transport to the main career; coarse tails with minimal mineral content of smectites, gravity hydraulic or pumps are going to hostprovider for further gravity of transportation in the existing tailings pond, where it is used as building material for the construction of dams for sustainable design.

The invention is illustrated by the drawing, which shows a circuit hardware design module combined processing of frozen tailings from enrichment of disseminated copper-Nickel ores of the Norilsk deposits.

The module includes: career field 1, the wall of the open pit 2, lane 3 with two or three dredgers 4 and one or two floating hydro 5, onshore pumping station consisting of a stationary vibrating 7 6 screens, sump 8 with overflow pocket 9 for refund of excess amount of pulp in the career field and associated defrost, erosion and transport of tailings at two or three points from the working pit in the lane; the pump 10 with adjustable capacity, two pressure pathstring of polypodioides 11, ten of vibrating screens 12 screens with holes or slits from 1.5 to 1.7 mm, two sump 13, four pump 14 with adjustable capacity and four batteries bessemoulin double conical hydrocyclones 15 (each battery 16 hydrocyclone diameter of 250 m is, 6 of them can be turned on or off in automatic mode, or remotely by the operator depending on the pulp level in the sump and pressure of the slurry at the entrance to the hydrocyclones), two sump 16 and two pump 17 with adjustable capacity in the power of centrifugal separators, two pressure pathstring of polypodioides 18, ten centrifugal separators 19, the sump 20, a pump 21 with adjustable flow rate in the supply main flotation, three cameras mechanical photomachine 22 with a volume of 130 m3each operation of the main flotation, foam gutter 23 mechanical photomachine, sump 24 by pump 25 with adjustable capacity in nutrition four chambers electromechanic photomachine 26 with a volume of 17 m3 each, for the first peredishki concentrate the main flotation, the sump 27, pump 28 with adjustable capacity in the power of three cameras electromechanic photomachine 29 with the volume of each chamber 8 m3each for the second peredishki concentrate sump 30, a pump 31 with adjustable capacity for tailings delivery of the first peredishki in the main flotation; sump 32 with a stirrer and two pairs of high-pressure pump 33 (one pair reserve) for hydrotransport total concentrate; sump - divider 34 for directing part of the dumping of hydrocyclones gravity hydraulic in the career field to defrost, erosion and Tr is Sparta tails in two or three points from the working pit in the lane. The tails of photomachine 22 direct gravity flow hydraulic or pumped by pump 37 through the sump 36 in two hostprovider 35 current concentrator.

The module for the combined processing of tailings works as follows.

The original product module, the old tailings suspended tailings from enrichment of disseminated copper - Nickel ores of the Norilsk deposits in permafrost, in the form of a slurry hydrotransport served two or three dredgers 4 lane 3 career fields 1, after thawing and erosion of frozen tails plums hydrocyclones, circulating water and floating hydro 5. Given the high productivity of the pit is provided by applying to the working pit 2: return of excess pulp in three points of the working pit to defrost, erosion and gravity hydrotransport slurry tailings from the sump 8 through the overflow pocket 9 in lane 3; supply parts warm drains hydrocyclones for defrost, erosion and gravity hydrotransport slurry tailings from the sump divider 34 on the working Board career 2 three or two points and then in lane 3; the warmed circulating water on the working Board career 2 to defrost, erosion and gravity hydrotransport slurry tailings in lane 3. In lane 3, the settled coarse tails, blurred floating is the hydro 5, which simultaneously serves the pulp under cutter dredgers 4, prevent silting lane 3 and maintain a certain depth and dimensions of lane 3 is required to maneuver dredgers. From the lane, dredging pressure slurry pipelines, in excessive quantities by volume slurry with a solid content of 5-15% is directed to a fixed 6 and 7 vibration rumble with the size of the square hole mesh with a party of 12 to 16 mm Oversize product size more than 12-16 mm (macro-grained rock rock soil and slag) sent for construction purposes. Underflow enters the sump 8, which is under the screens and pumps 10 with adjustable flow rate, specified by the operator the amount by volume of the pulp, served in the technological process of the concentrator. Excess volume of the pulp, through the overflow pocket 9 sump 8, as mentioned above, gravity hydrotransport is supplied to the working Board career 2 for erosion of tailings. This results in stabilization of the volume of the pulp and its need for further technological operations.

Next, the slurry of the two pumps 10 is served by two pressure pathstring of polypodioides 11 on the outlet pipes, which, for each crash 12, gate valves installed in a durable design with the remote controller with many brand is owned pneumatic control to connect or exclusion from the scheme each screen 12. On the screens 12 are installed with grid size of a gap from 1.5 to 1.7 mm Undersize product screens 12 enters zumpfe 13, where the pulp level is maintained constant by changing the number of revolutions of the motors of the pumps with the use of ultrasonic level sensors. When changing the number of revolutions decreases or increases the amount of slurry flowing into the battery double conical hydrocyclones 15, respectively increases or decreases the pressure at the entrance to the double conical hydrocyclones 15, therefore, to maintain the pressure at the inlet of the hydrocyclone in the optimum mode is automatically added or reduced the number of discharges of hydrocyclones. Constant inlet pressure stabilizes the solid content in the Sands of hydrocyclones, with fluctuations on the solid content in the Sands beyond the boundaries of the regime routings centrifugal enrichment (43% solids ±2%). Thus, the double conical hydrocyclones perform simultaneously two process steps desliming (classification by size) with partial removal of smectites and thickening. Condensed sand hydrocyclone through zumpfe 16, which is maintained at a constant level by means of ultrasonic level sensors and change the number of revolutions of the motor pump 17, is sent to two pressure Palestro the different polypodioides 18, on the output sockets are mounted gate valves, wear-resistant design with automatic control from industrial logic controller designed to control the operation of all five of centrifugal separators 19 fed from one pathstring pressure polypodioides 18. Concentrate centrifugal separators is sent to the sump 32 with a stirrer, a further hydraulic pump 33. Tails centrifugal gravity separators hydrotransport directed to the sump 20 of the pump 21. In sump 20 is maintained at a constant level of slurry by changing the number of revolutions of the pump 21. Next the pulp, with a stable volume and solids are directed to a mechanical photomachine 22, consisting of three chambers 130 m3each and fed sequentially. The pulp level and the height of the froth layer in the first, second and third chambers photomachine 22 is automatically maintained constant at the optimum level on the instructions of the operator, with the aim of obtaining a given quality of the main flotation concentrate, by means of a float sensor that is installed in the first chamber and one float sensor on the second and third chambers. A large total volume of the first chamber of photomachine smoothes minor changes in the volume of the slurry from entering the first chamber, the tail is in photomachine 26. By reducing the content of non-ferrous metals in the source power, at the same time is reduced and the quality of the main flotation concentrate, and to preserve the quality of the concentrate in this case, it is necessary to reduce the front flotation in three times for this purpose on the second and third chambers photomachine the pulp level is set by the operator at a minimum level to prevent removal of the foam containing a large amount of waste rock in the froth trough 23 of the second and third chambers. In this case, the first cleaners will be the main concentrate of flotation with the first chamber, from which, after cleanings obtained conforming concentrate on the content of non-ferrous and precious metals. When the average content of non-ferrous metals in the source power to eat the foam product is conducted with the first and second cameras photomachine main flotation. On the third chamber overlaps the air valve through which air for aeration of the pulp and create a foam layer. In this case, from the third camera removing the foam in the foam chute 23 no. The quality of the froth product from the first and second cameras photomachine ensures the production of standard concentrate on colour and noble metals after cleanings. The high content of non-ferrous metals in the original food eat froth product is conducted with all three cameras. The tails of photomachine 22, oberschlesien the e and with a minimum number of minerals, smectites, gravity hydraulic or technological necessity pumped by pump 37 through the sump 36 in hostprovider the existing beneficiation plant processing ore raw materials and forth in the existing tailings pond. Concentrate photomachine 22 is directed into the sump 24, in which the pulp level maintain a constant using the ultrasonic sensor by changing the number of revolutions of the motor pump 25, which directs the concentrate in the mechanical photomachine 26 (the first cleaners concentrate) consists of four chambers 17 m3and included in the circuit in series. The pulp level in the cells is kept constant at the set level by the float sensors, one for every two cells. The tails of photomachine 26 combine with the original power photomachine 22, through the sump 30 which maintain a constant level by means of the ultrasonic sensor by changing the number of revolutions of the pump motor 31. Concentrate photomachine 26 (after the first peredishki), through the sump 27, in which the pulp level also maintain a constant using the ultrasonic sensor by changing the number of revolutions of the pump motor 28, is directed to the mechanical photomachine 29, consisting of three chambers 8 m3each and enjoyed the different series. The pulp level is kept constant in all three cameras at the specified level using one of the float sensor. The concentrate after the second peredishki enters the sump-mixer 32, where it is maintained at a constant level by means of an ultrasonic sensor, by adding water and adjusting the number of revolutions of the motor of the pump 33. In the sump of the mixer 32 is also sent concentrate centrifugal separators, and the combined concentrate factory two pumps 33, connected in series (the other pair of pumps is in reserve), pumped into the system hydraulic selective concentrates obtained from raw ore.

Declare module was industrial approbation in the processing of old tailings in permafrost, from the processing of disseminated copper-Nickel ores of the Norilsk deposits received additional products and profit from its implementation.

Processing module for the combined processing of frozen tailings from enrichment of disseminated copper-Nickel ores of the Norilsk deposits, including career field, two or three vessels, onshore pumping station consisting of stationary and vibrating screens, sump with overflow pocket, reported by a gravity hydrotransport with career field, two pumps with adjustable the performance by changing the number of revolutions of the motor, pressure Palestrina polymodality communicated with vibrating screens, zumpfe and pumps provided with batteries bessemoulin hydrocyclone diameter of 250 mm, the outputs of sand through which zumpfe and pumps with adjustable flow rate reported with additional pressure palestrini polypodiaceae, and then with centrifugal separators, outputs tails which gravity flow through the respective hydraulic sump and pump with adjustable flow rate reported with mechanical chamber photomachine, consisting of chambers 130 m3each fed sequentially, and the output of concentrate which communicates with the sump and pump with adjustable flow rate and further communicated with the mechanical photomachine, consisting of four chambers of the first peredishki, volume 17 m3each, and included in the circuit in series, the output of concentrate four chambers electromechanic photomachine communicated with the sump and pump with adjustable flow rate and further communicated with the mechanical photomachine, consisting of three chambers of the second peredishki volume of 8 m3each and included in the circuit in series, the output of the tails of the second peredishki gravity hydrotransport communicated with the first chamber of the first peredishki, and the output of the tails of the first peredishki communicated through C the FPM and the pump with the first camera mechanical photomachine main flotation, the output of concentrate centrifugal separators and flotation concentrate of the second peredishki communicated through the sump-mixer with a high-pressure pump, wherein the module is equipped with one or two hydro, installed in the main career fields, junction box for directing part of the warm discharges bessemoulin hydrocyclones gravity hydrotransport in the career field to accelerate thawing and erosion of tailings at two or three points of the pit and subsequent referral to the main pit, installed on-shore pumping station screen, made with the size of the square hole mesh from 12 to 16 mm, photomachine for the main flotation performed with three cameras, obesshlamlivanija hydrocyclones made cone with a cone angle of 20 and 10°, overflow pocket sump onshore pumping station additional informed by gravity hydraulic with two or three periods a working pit to return excess slurry in the lane, as well as to accelerate thawing and erosion of tailings.



 

Same patents:

FIELD: mining.

SUBSTANCE: at the bottom of the developed open pit there created is a freezing circuit by driving of zigzag-shaped trenches and laying of pipes in them; after that, ice rock backfill is erected by freezing-out overburden; a waterproof screen is laid and filled with a clay loam layer. Then, an upper freezing circuit is made of pipes and a heat-insulating layer of local loose materials, a waterproof screen and a clay loam layer is erected on it and covered with overburden. As a protective cushion is being created, cold air is delivered via lower freezing circuit, and cooled air is supplied via upper freezing circuit during warm season.

EFFECT: providing insulation of underground work against penetration of surface water and dynamic actions under permafrost zone conditions; providing safe work performance.

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EFFECT: increased efficiency of ore transportation from deep pits.

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EFFECT: invention makes it possible to increase safety and efficiency of mining.

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FIELD: mining.

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EFFECT: higher safety and efficiency of mining of a thick flat coal bed.

2 dwg

FIELD: mining.

SUBSTANCE: method includes performance of stripping works and extraction of a part of a bed reaching under drifts, with an open pit forming ledges, arrangement of extraction chambers according to the technology of deep mining of coal beds from the ledge of the pit board, preparation of reserves by arrangement of drifts, extraction of coal by facilities of underground works mechanisation. The extraction chamber is arranged diagonally relative to the bed falling line at the angle to the horizon of not more than the one permissible for a combine and a self-propelled car. The roof of the extraction chamber is fixed with a support of developing entries, for instance, with an anchor one, the distance between extraction chambers is accepted as equal to 3-4-fold width of the extraction chamber depending on strength characteristics of coal and rock massifs. Coal extraction in the chamber-to-chamber pillar is started in diagonal stopes at the side of bed rising, aligning them at the angle of 120…135 degrees to the axis of the extraction chamber, measured from the chamber head, and broken coal is transported with the self-propelled car along this extraction chamber. Then the combine is turned, and coal is removed in stopes at the side of bed falling, aligning them at the angle of 120…135 degrees to the axis of the extraction chamber, measured from the further border of the chamber; transport of coal broken in these stopes is carried out with the self-propelled car along a drift and the adjacent extraction chamber.

EFFECT: higher safety and efficiency of mining of a coal bed with medium thickness in a contour area of a pit with an open-underground method.

1 dwg

FIELD: mining.

SUBSTANCE: method includes erection of a horizontal working site at a ledge of a working board of a cut, assembly of mechanisation facilities on it, extraction of coal with these mechanisation facilities aside from the working site by means of performance of extraction chambers, leaving proportionate chamber-to-chamber pillars in the layer and between the layers, release of broken coal in these chambers to a temporary warehouse or for loading into a vehicle. Mechanisation facilities are a tunnelling machine and a self-propelled car, coal is extracted in the upper layer - with horizontal chambers transversely to bed stretching, in all subsequent ones in the descending order - with horizontal chambers along bed stretching with diagonal stopes. Transition from a layer to a layer is carried out by means of arrangement of an inclined mine and formation of a bypass chamber in it, rocks broken in process of inclined mine and bypass chamber arrangement is placed in the mined space, the inclined mine and the bypass chamber of the first underlying layer downstream the working site are arranged as open, and all further ones - as underground.

EFFECT: higher efficiency and safety of mining of a thick steep coal bed with an open and underground method.

3 dwg

FIELD: mining.

SUBSTANCE: method includes erection of a working site at a cut board ledge; or its bottom along a line stretching at the level of the bed soil, assembly of mobile facilities for clearing works mechanisation, extraction of coal with these mechanisation facilities aside from the working site by arrangement of parallel extraction chamber of rectangular cross section, leaving commensurate chamber-to-chamber pillars, discharge of the broken coal along the mine to the working site and its loading into a vehicle or to a temporary warehouse. Previously a diagonal slope is arranged in the layer near the bed roof, which near the border of the coat cut mining allotment is turned along the bed stretching line, i.e. converted into a drift equal to the slope in section and similar in fixation. Then in a similar manner the extraction chamber is arranged until it is coupled with the drift, afterwards coal is extracted in diagonal stopes at the side of the bed rise, cutting stopes at the angle of 120…135 degrees to the axis of the chamber, measured from its head. The length of the stope is accepted as not more than the length of the combine, and security pillars are left between stopes with the width approximately equal to the width of the stope. The coal broken in stopes is transported with a self-propelled car along the extraction chamber to the working site.

EFFECT: invention makes it possible to increase safety and efficiency of mining.

2 cl, 2 dwg

FIELD: mining.

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

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

FIELD: mining.

SUBSTANCE: method involves drilling of a transport tunnel from the open pit on horizon below the developed ore deposit, loading of mined rock from the ore deposit to mine dump trucks and delivery of mined rock with mine dump trucks via the transport tunnel to its portal located on the open pit side, transshipment at the transshipment point of mined rock from mine dump trucks to the open pit transport. Section of transport tunnel, which is located under outlines of ore deposit, is horizontal, and the rest section of the transport tunnel, which is interconnected with its portal, is inclined. Portal of the transport tunnel is arranged below horizontal section of transport tunnel and transshipment point above it. Transshipment point is connected to horizontal section of the transport tunnel via an inclined transport access track. Movement of mine dump trucks along the inclined transport access track for loading of mined rock and mine truck dumps loaded with mined rock via an inclined section of the transport tunnel is performed by self-operation under action of gravity force, in compliance with the programmed mode.

EFFECT: reduction of operating costs for transportation of broken mined rock via underground mine workings; reduction of costs for their ventilation with simultaneous improvement of environmental situation.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: method includes exposure and development of reserves by open-cut method, exposure, preparation and working-out the reserves in cut edges by underground method, transportation of rock mass and maintaining protective pillars. When eliminating the front of open mining at safety distance there performed is an exposure of underground mining unit in cut edge that includes several beds. There passed are ventilation and pulp-haulage drift ways that are cut by pulp-haulage roadway, and from the surface there drilled are wells along coal beds till pulp-haulage roadway. Broken working is done from well upwards and downwards by hydraulic or drill-hydraulic methods, and pulp transportation is done by wells and pulp-transportation mines till draining complex.

EFFECT: invention allows increasing the coefficient of mineral resources extraction and reducing environmental losses.

6 cl, 2 dwg

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

FIELD: metallurgy.

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.

4 tbl

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: process engineering.

SUBSTANCE: invention relates to mining, particularly, to dressing of minerals, e.g. ores of ferrous, nonferrous and noble metals, nonmetallic minerals and man-made formations. Proposed method comprises crushing, shredding, sizing and drying of mineral processing products before electric separation. Drying is carried out at natural positive temperature of processing product and decreased pressure of 1-150 mm Hg. Heat power released in phase transfer is returned to drying process.

EFFECT: higher environmental safety, power savings.

1 dwg, 3 tbl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to concentration of siliceous rocks. It may be used in food, pharmaceutical and chemical industries for making of filtration material, or in construction as an additive for production of mortars, concretes and dry construction mixes. Proposed method comprises diatomite preparation, extraction of target fraction, grinding and acid treatment under boiling conditions. Additionally, extracted target fraction is annealed in boiling bed furnace at 550-900°C for 20-360 s. Said target fraction is separated mechanically by centrifugal and vibration forces. Acid treatment is carried out along with mixing for 20-30 min at acid concentration of 0.1-0.5 H. Hydrochloric or sulphuric acid is used to this end.

EFFECT: higher efficiency of separation, required quality of diatomite, decreased content of harmful impurities.

2 cl, 1 dwg, 2 tbl, 18 ex

FIELD: process engineering.

SUBSTANCE: invention relates to dressing of minerals and may be used in mining in concentration of large-lump minerals. Proposed method comprises the steps that follow. Crushing the ore to different sizes. Sizing the ore. Separating to fractions with respect to content of valuable component (except for fine fractions) and determining the optimum crushing size by extremum of portion contract factor-to-crushing degree ratio with due allowance for yield and extraction of fine fractions. Boundary diameter of ore fine fractions makes 5-50 mm and is specified by there requirements of State standard to commercial lump concentrate or machine fraction, that is, processes possibilities of feeding initial size of selected dressing process.

EFFECT: optimum selection of crushing size to up concentrate quality and yield of valuable component in concentrate.

1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to mining and can be used for dressing stock of man-made deposits, polygons of industrial wastes and temporary stores formed in operation of dressing plants. Proposed method comprises extraction of initial stock, its classification to form out-of-standard bulk to be directed to dump and standard, that is, concentrate including useful component. Iron ore stock represents stored iron-ore concentration tails and/or stored out-of standard iron ore. Haematite is used as useful component in dressed initial stock. Note here that after extraction of initial stock pulp is made thereof and subjected to sieving. Oversize product with grain size over +1 mm is directed to dump while undersize product is classified in hydrocyclone, its waste of grain size of -0.03 mm is directed to dump while sands of grain size of +0.03 mm is concentrated at the first stage of hydraulic gravity concentration. Formed sands are directed to hydraulic gravity concentration. Wastes are directed to second stage of hydraulic gravity concentration, that is, cleaning, its wastes being directed to dump. Note here that sand as those of first stage of hydraulic gravity concentration in separator are directed to hydraulic gravity concentration by, say, helical separator. Three process flows results at the process termination. first, flow, wastes, is directed to dump. Another flow, an intermediate product containing particles of concentrated heamatite, is directed for reclassification in hydraulic cyclone, while third flow, heamatite concentrate, is directed for thickening and dehydration.

EFFECT: efficient pulp separation for production of high-quality heamatite at low costs and power savings.

7 cl, 2 dwg

FIELD: metallurgy.

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

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

11 cl, 2 dwg, 1 ex

FIELD: mining.

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

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

FIELD: metallurgy.

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

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

4 cl, 3 tbl, 1 ex

FIELD: concentration of minerals.

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

EFFECT: enhanced efficiency of entrapping fine gold.

7 dwg

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