Intelligent system for automatic monitoring of quality and quantity of ore flow in process of preparation for concentration

FIELD: measurement technology; mining.

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

EFFECT: increased efficiency of monitoring and reliability.

1 cl, 2 dwg

 



 

Same patents:

FIELD: mining operations.

SUBSTANCE: invention relates to the mining industry and can be used in stripping and mining operations at the fields, composed of dense and semi-hard rocks, with use of boom surface miners, spreaders and other mining machines. The method comprises continuous extraction and direct overburden waste disposal, continuous extraction, transportation, sorting of mineral resources. The front of mining operations is located along the short axis of the career field, the continuous working of overburden bench of high altitude is performed simultaneously on two sub-benches using boom surface miners. The overburden on the conveyors of the boom surface miners is fed through the receiving devices to the conveyors of the loading consoles of the spreader. The process of combining the conveyors of the boom surface miners with the receiving devices of the loading consoles and positioning of the spreader relative the boom surface miners is provided by the automatic control system. The mining operations are carried out with the use of excavating milling machine, the mineral resources are fed by the loader to the hopper of the mobile reloading unit with a conveyor and then to the mobile-sorting unit.

EFFECT: increase of the productivity of mining operations in the development of deep deposits of mineral resources composed of dense and semi-hard rocks.

2 dwg

FIELD: mining.

SUBSTANCE: method of development of solid mineral fields using the excavating milling machine and scrapers comprises the use of the excavating milling machine for rock loosening with placement of milled rock mass into the dug-out trench from which it is taken by the scraper which follows the excavating milling machine continuously without stopping. The scraper scoops the rock mass to the ladle by means of the loading tray which fills the front part of the ladle with rock mass and then moves using a rake wall, and the released front part of the ladle is filled with rock mass again. Hydraulic cylinders of the tray control mechanism lift the loading tray with rock mass for final filling of the ladle front part. The ladle is unloaded through the formed slot between the ladle bottom and the loading tray lifted in guides by means of the back wall which moves to the front part of the ladle with the rake wall.

EFFECT: method improves the operational reliability and productivity when performing stripping and mining works on the fields formed by dense and hard rocks using excavating milling machines and scrapers.

2 cl, 9 dwg

FIELD: mining.

SUBSTANCE: this process comprises open coal extraction by cut chambers, production of barrier posts and backfilling of said chambers. Drilling hardware represents a milling driller located on day surface with drilling tool inclination of 45-90 degrees from vertical line. Note here that coal removal from blocks is performed with the help of hydraulic drawing device at liquid-to-solid ratio equal to 1:3. There, coal pulp is directed to coal dewatering to 7-8 % while effluents are forced to desliming and circulation.

EFFECT: higher efficiency and safety of edge seams development.

6 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method comprises the cleaning of coal bed or beds by striking by open mining operations and installation on a bed of a drilling unit, for coal drilling-out at an angle from 60 to 90, with reference to the bed strike axis, and to the depth 100 meters and deeper. To increase a productivity of coal extraction, and also to decrease of load on the cutting working body in case of emergencies, a bucket auger is formed by two parts, namely the cutting working body and a lift cylindrical ladle connected to each other by the coupling device. Inside the bucket auger an auger-drill element for loading of minerals into the lifting cylindrical ladle is installed.

EFFECT: improvement of efficiency of development of steeply pitching coal beds and environmental safety of mining operations.

7 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to open development of mineral fields, more exactly to open development of the long steep dipping fields with internal dumping. Method when borrow pit length is divided to turns, from them first turn is developed to design depth with external dumping, and second turn is developed using internal dumping, locating overburden to the developed space of the first turn with common formation of the dumping tiers with progress of mining towards end through full depth. At that the work zone through height is divided to two parts, bottom part opening and development are performed by longitudinal inclined layers with lifting 20-25% towards end using the wheel loaders and vehicles able to move over these steep grades, height of the bottom part is determined as per mathematical equation. The top part of the work zone is developed using the transverse development system and sliding access tracks, their width is accepted based on the condition of their use for dumping of the exploded rocks upon their widening and simultaneous assurance of two-way passage of vehicles ensuring the cargo movement between the bottom and top shelves, the longitudinal inclined layers of the bottom part of the work zone are developed by separate formed in series from top to bottom near-vertical-horizontal layers with maximum height, determined considering trajectory of the loader bucket movement, during development of each successive near-vertical-horizontal layer the rocks are preliminary loosened, the loader excavates it and loaded in vehicles located at horizontal sites at minimum distance to the mine working.

EFFECT: technical result is decreased additional sides spacing to arrange the opening mine working, and reduced distance of overburden transportation from the work zone of the borrow pit to the internal dumping.

2 dwg

FIELD: mining operations.

SUBSTANCE: method comprises the construction of three artificial elements: impervious screen, a protective berm, a protective coating. And the impervious screen is created by drilling of inclined wells of large diameter in the winter period from the upper site of the ledge nonworking edge side most affected to thawing, parallel to the slope surface at its full height followed by filling them with ice rock stones, chilled fresh water and freezing with natural cold, and the protective berm is erected over the mouth parts of the wells, starting from the upper edge of the ledge of the tapered section of calculated height, using layered freezing of overburden rocks, which in the summer period, including the surface of the ledge slope, to prevent thawing, covered with the protective coating, which is made in the form of removable flexible moisture-heat- and light-reflecting mat, removed with the onset of winter, the thickness of which is determined based on the mathematics.

EFFECT: prevention of thawing of frozen rocks of non-working ledge edges of pits.

1 dwg

FIELD: mining.

SUBSTANCE: method comprises preliminary loosening of a block of rocks and half-rocks by simultaneous massive drilling holes in it with the maximum density across the whole area of the block prepared for extraction, using a multibar drilling unit, followed by the extraction of rock by machine ways destroying the rock solid blocks between the holes.

EFFECT: complete elimination of harmful effects on the environment and the operational staff at drilling and blasting loosening rocks.

2 cl

FIELD: mining.

SUBSTANCE: invention relates to the method of open mining of mineral deposits with creation of a dump. The method includes separation of career space by zones, height and pit perimeter, cutting of ledges and horizons on which overburden and mining works with removal of rocks by truck or by rail into dumps and via ore chutes to reloading points are conducted, and dumps are built up using the cyclic action facilities. Meanwhile a convex form of a working edge is formed, gradually being fitted into the edge differentiated by steepness on a final contour which is built up in view of minimum disturbance of walls of slopes and a edge according to the technology with minimum consumption of explosives (E) with removal and dumping of rock into a main dump located near a zone of overburden works outside a contour of a steep edge of a pit of the 1st phase; initially temporary dumps are used with self-transportation of rocks outside a pit, and with their partial re excavation, provide the minimum shoulder of tramming of rocks and ore using the crushing reloading points and conveyors from inclined planes on the top horizons to the steep and vertical at completion of a pit. And with deepening of mining operations the overburden zone is divided into two sites and rock is moved by combined transport from two sides into a dump under construction parallel to a edge slope in view of deformation of its separate sites, and rock dumping on a dump after crushing is carried out by line transport facilities using the mobile console, the minimum shoulder of tramming of rock and ore and costs of development of mountain weight on the first and the subsequent stages (turns) are ensured, and the first two layers of a dump are dumped according to cyclic and line TsPT technologies using motor transport or loaders (at re-excavation of rocks) that provides stability and robustness of the dump front according the developed technology of dumping, at the final stage the third layer is dumped, and the fourth layer of dump if necessary, according to its calculated volume and height and limit depth of a pit.

EFFECT: improvement of efficiency of field development during construction of a dump with large volume and height at decrease of costs of stripping and improvement of safety of dumping.

4 dwg

FIELD: mining.

SUBSTANCE: after performance of drilling and blasting operations in an overburden bench during layer-by-layer excavation of the blasted rock to an extended bench and a final blade circuit on the formation roof of the mineral deposit within excavation heading throughout the length of the slab there left is a layer of the rock with negative temperature. This allows developing a zone of stable freezing, warming it up and strengthening it by action of solar insolation during development of the upper part of the breakdown. The rest rock layer is excavated to a final blade circuit after disposal of the upper part of breakdown throughout the length of the excavation slab.

EFFECT: reduction of influence of repeated freezing on productivity of a drag line and provision of its stable operation during excavation of blasted rocks of an overburden slab.

3 tbl, 2 dwg

FIELD: mining.

SUBSTANCE: method involves positioning of an automated complex for deep development relative to the working face considering the direction of ore bodies settings. Control of mine rock parameters is performed by means of control sensors of physical and mechanical characteristics of mine rocks for adjustment of a mine rock cutting force considering rotation speed of a working element and movement speed of the working element in a vertical plane throughout the cutting depth and cutting direction by means of hydromechanisms of telescopic retraction and a turning mechanism of the head section. Width of capture of the ore body plane in a horizontal direction is provided by means of the positioning mechanism of the complex relative to guides; with that, information on circuits of destructed mine rock is sent from control sensors of mine rock circuits to a system control unit.

EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention relates to processing of gold ore deposits of shale formation of stringer-porphyry mineralisation type. The claimed complex for ore processing comprises module of crushing, grinding-gravity module, flotation module and metallurgical module interconnected downstream the technological process. The grinding-gravity module is made in the form of a drum-roll mill in conjunction with jolting machine and griddle.

EFFECT: increasing gold recovery and reduction of capital and operating costs in processing of ore low-grade in gold content through the use of both gravity and flotation methods of enrichment.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: invention refers to the mining industry and may be used during extraction and processing of molybdenum-containing ores. A method for extraction and processing of molybdenum-containing ores involves open-pit field zoning, outlining of solid ore sections different by processing characteristics, selective extraction on the outlined sections with ores allocation to separate the flow from the zones with increased molybdenite oxidation and its direction to luminescent separation. A powellite enriched product of separation after its size degradation is directed to bulk floatation obtaining a rough molybdenic concentrate. Then after molybdenite oxidation in the rough concentrate, powellite is leached in an environment of a molten mixture of chloride and sodium silicate. The tail product of separation after its size degradation is directed to bulk floatation obtaining the molybdenic concentrate.

EFFECT: increasing a level and quality of molybdenum extraction to the end product from balance molybdenum ores with higher degree of molybdenite oxidation.

1 dwg

FIELD: mining.

SUBSTANCE: invention relates to the metal mining industry and can be used for processing of gold-containing concentrates, mainly quartz, carried out prior to gravitational enrichment. The method of processing gold-containing concentrate prior to enrichment comprises supplying pulp into cavitation dispersion medium, dispersion with opening the grains of gold particles on zones of their natural adhesion with the rock. Processing of the pulp is carried out in stator-free rotary-pulsation unit, at the output of which the flow of the pulp is additionally processed by two turbulence promoters mounted on the pulp pipeline, each of which represents a swirler mounted inside the pipe. The flow of pulp processed in the rotary-pulsation unit is first directed as co-current to the first turbulence promoter, the swirler of which is mounted in the pipe with a diameter equal to the diameter of the pulp pipeline, then tangentially - to the second turbulence promoter, the swirler of which is mounted in the pipe of larger diameter, smoothly passing in the diameter at the outlet of the second turbulence promoter, equal to the diameter of the pulp pipeline.

EFFECT: improvement of efficiency of gold extraction.

3 dwg, 2 tbl, 1 ex

FIELD: agriculture.

SUBSTANCE: group of inventions relates to processing of dredge spoils excavated by the dredger. The method of transportation of dredge spoils from the fields of excavation located in the area of re-use at a great distance from them comprises the steps at which the marine transport vessel is located for anchorage near the excavation area, with the much larger size than the dredge, adapted to receive a large amount of dredge spoils in a condition suitable for transportation, the excavation of dredge spoils, using at least one dredger, bringing the dredge spoils to a condition suitable for transportation by the supply of dredge spoils from the dredger to a centrifugal separator separating dredge spoils onto wet fraction and dry fraction, and the dry fraction is collected and fed to the gravity separator additionally separating the collected dry fraction to the drier and wetter fractions in comparison with the dry fraction, in which the drier fraction is collected in a transport vessel made with the ability to receive the drier fraction of dredge spoils and transportation of the drier fraction to the area of re-use using the transport vessel, the location of transport vessel for anchorage in the area of re-use and unloading of drier fraction from the transport vessel in the area of re-use.

EFFECT: delivery to the consumer of finished construction products is ensured, immediately after the processing of the underwater ground on the watercraft.

17 cl, 2 dwg

FIELD: mining.

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

FIELD: process engineering.

SUBSTANCE: invention relates to loose material size, shape and density separation and can be used to classification of abrasive grains in production of abrasive tools. Proposed device consists of the rotor fitted on shaft and engaged with motor shaft via clutch, intake chutes, tray coupled via pipeline with pump. Besides, classifier comprises suspension mixer communicated by pipeline with pump to optimise suspension state prior to feeding to rotor and composed by mixing device, motor and valve. Tray-type intake chutes with baffle plates are arranged one above the other on bed its height being adjusted by pins. Rotor represents a composite surface in the form of flat disc nearby rotational axis and hemisphere with locating conical hole for fitting o the shaft. Rotor shaft runs in rolling bearings inserted via sleeve in bearing barrel secured with cover and motor at said bed mounted with the help of posts on the plate.

EFFECT: higher efficiency of classification to size and shape and process efficiency.

6 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to an apparatus for processing organic and mineral wastes, having a cylindrical housing made with a double wall with an outlet window for collecting liquid and gaseous fractions and fitted with a feed cover, a mixer inside the housing, having inlet and outlet windows for a heat carrier. The cylindrical housing is capable of rotating; the mixer is made of three inclined tubular elements with blades placed through 120 and rigidly mounted by one end on the end wall of the housing with inlet windows for connection with heaters, and by the other end on the inner wall with outlet windows for feeding the heat carrier into the cavity between the two walls of the housing, and the blades are crescent shaped and are rigidly mounted on the outer side of the tubular element with an inclination angle of 30-40 to the side opposite the inclination of the tubular element. A raw material compactor and a pipe for removing steam and feeding liquid reagents are also mounted in the housing.

EFFECT: simple and reliable design of the disclosed apparatus ensures high efficiency of heat transfer to the processed material, single-step processing of material without preliminary sorting and without preliminary crushing, broader technological capabilities of the apparatus.

1 dwg, 2 tbl, 8 ex

FIELD: process engineering.

SUBSTANCE: invention relates to mining, particularly, to concentration of minerals, namely to gold extraction from gravel man-caused deposits of various origin. Method of extracting gold from gold-bearing stock pulp cleaned of larger particles, approx. 1.5 mm and smaller particles, approx. 0.04 mm, whereat said pulp is, first, sized to different fractions to be separately concentrated by vibratory concentrators and dressed at dressing tables. Then, obtained super concentrates are subjected to magnetic and electrostatic separation. Proposed dressing device comprises, at least, two hydraulic classifiers, two vibratory concentrators, two concentration tables and settler. Said hydraulic classifiers allow pulp separation into fractions and their feed to different vibratory concentrators which, in their turn, feed separately obtained concentrates to different dressing tables. Pulp formation device, vibratory concentrators and dressing tables are communicated with settler communicated, in its turn, with fresh water inlet of above said concentrators and tables.

EFFECT: higher yield.

5 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to mining and may be used for ore qualification at mining stage. Proposed method comprises ore excavation, or crushing stage-by-stage in crushers, classifying crushed ore, separating off-grade and gob ore using lump X-ray spectral separation with re-crushing of ore portion. In sampling lumps of every size grade with discrete distribution of mineral over lump surface, luminescence signal pulse length is defined whereat lumps of given size grade have mineral content approximating to cutoff grade. In separation, all lumps with uniform distribution of mineral and those with its discrete distribution that feature luminescence signal pulse length exceeding reference value are extracted into dressed product. Lumps exhibiting pulse length smaller than reference value for current grade size nut exceeding that for the next grade size are subjected to re-crushing and further separation.

EFFECT: higher efficiency of dressing and yield.

1 dwg, 3 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to mining and may be used in ore dressing. Proposed complex comprises receiving hopper, crushing and screening unit, assembly to feed ore to separation, ore control station, ore lump separators, concentrate and reject discharge conveyors arranged in underground openings. Assemblies feeding ore to separation and X-ray-type separators are arranged on two levels in long openings communicated by box holes to accumulate and feed ore to separators by gates arranged at their outlets. Said box holes are located at 5-7 mm from each other to feature diameter of 1.0-1.5 mm. Assembly feeding ore to separation represents combination of openings, each being 120-40 0m-long and having 2.5-3 m-diameter, and connected with crushing and screening assembly to allow every opening to feed ore of particular size grade to box hole. Every separator comprises, at least, one additional channel for cleaning rejects after separation of concentrate in main channel. Conveyor belts of said main and additional channels are located one above the other. Openings accommodating said assembly feeding ore to separation and separators are spaced apart for 15-20 m along vertical. X-ray-type separator channel comprises, at least, one x-ray useful component content analyser connected with separation device made up of, at least, one pneumatic blowout nozzle. Every aforesaid assembly is equipped with conveyor provided with unloading device driven along openings length. Crushing and screening unit allows producing four flows of ore sized to (-300+120), (-120+50), (-50+15), (-15+0) mm, with (-15+0) mm-ore directed to concentrate discharge conveyor, the remaining flows being used for filling box holes.

EFFECT: higher efficiency of separation and quality of concentrate, reduced costs.

8 cl, 3 dwg

FIELD: process engineering.

SUBSTANCE: this invention discloses the sorting of materials. Proposed processes exploit X-rays for sorting the materials from impurities that can be used for cleaning of coal of sulphur, mercury and other impurities. In compliance with one version, specimen is prepared to decrease its size to 10 centimetres or smaller. Minimum X-ray radiation absorption of the specimen thicker ply is defined. Absorption of X-ray radiation of specimen pieces is measured to identify specimen pieces of higher absorption than that of thicker ply. Specimen pieces are sorted out from its remainder that feature higher absorption than minimum absorption of thicker ply. In compliance with another version, application of differences in factors of X-ray radiation linear absorption is disclosed for ore processing and removal of elements with greater atomic number from elements with smaller atomic numbers.

EFFECT: higher efficiency of sorting out, decreased contamination and coal ash toxicity.

15 cl, 10 dwg, 5 ex

Up!