58 results about "Heavy mineral" patented technology

The invention discloses a method for analyzing a sedimentary basin object source based on the detrital zircon age, and belongs to the field of analysis and detection, and the method comprises the following steps: S1, uniformly sampling in a known well and a potential object source area of a target layer to obtain a rock sample; s2, slicing the obtained rock sample to obtain a plurality of common slice samples and casting body slice samples, then performing component identification on slices, and analyzing identification results; s3, performing statistics on sandstone debris components of the Benxi group sample in the research area, and drawing a lithologic triangular diagram; s4, drawing a Qt-F-L diagram according to the debris component data of the research area; s5, representative samples in the research area are selected for heavy mineral analysis; s6, selecting representative samples in the research area, and measuring major elements and rare earth elements in the representative samples to analyze the material source supply condition of the research area; s7, performing U-Pb chronological characteristic analysis on the fragment zircon of the sample; and S8, performing U-Pb dating analysis on the fragment zircon of the sample.

The invention discloses a comprehensive utilization process for kaolin tailings. The comprehensive utilization process comprises the following steps: scrubbing the kaolin tailings; the scrubbed kaolin slurry is sieved by a 5mm linear sieve, waste rocks of + 5mm are used as sand-gravel materials, and the waste rocks of-5mm are classified into 2-5mm, 0.1-2mm and-0.1 mm; the method comprises the following steps: grinding and grading ore with the particle size of 2-5mm, returning and regrinding the ore with the particle size of + 0.6 mm, removing tail mud with the particle size of-0.045 mm by grading the ore with the particle size of-0.6 mm, carrying out magnetic separation on the ore with the particle size of 0.045-0.6 mm, carrying out 1-2 sections of strong magnetic separation on the obtained magnetic separation concentrate to obtain strong magnetic concentrate, heating, adding chemicals, scrubbing, and carrying out chemical removal, desliming and washing to obtain primary photovoltaic glass sand and graded fine sand; the method comprises the following steps of: grinding and screening the ore with the particle size of 0.1-2mm, grinding and screening the ore with the particle size of + 0.6 mm until the ore with the particle size of-0.6 mm is completely ground, carrying out spiral chute reselection on the ore with the particle size of-0.6 mm to obtain heavy ore and light ore, carrying out 2-3 sections of magnetic separation on the light ore to obtain magnetic concentrate, carrying out flotation to obtain mica, carrying out graded desliming on the product in a flotation tank, and carrying out graded fine sand with the particle size of-0.1 mm; carrying out heating, chemical adding and scrubbing at the particle size of 0.1-0.6 mm, and then carrying out chemical removal, desliming and washing to obtain secondary photovoltaic glass sand; the yield of the obtained product is higher, and the product index is better.

The invention belongs to the technical field of geological sample analysis, and particularly relates to a heavy mineral fidelity pretreatment and morphology automatic characterization method based on artificial intelligence. The method is based on a medium-low hardness heavy mineral fidelity separation and purification technology, an integrated multifunctional target manufacturing technology, a microscopic image intelligent acquisition technology and intelligent identification and feature extraction based on deep learning. The method comprises the following steps: acquiring fidelity heavy mineral particles which maintain the original three-dimensional morphology, are not reset in internal thermosensitive geological records and are not subjected to any systematic deviation screening on population composition, calculating a series of morphological parameters such as an extension coefficient, roundness, color and the like of each heavy mineral particle, and finally outputting a structured quantitative data report. According to the method, multidirectional and intelligent fidelity is realized from the source, and the analysis flux and objectivity are greatly improved by an automatic process, so that systematic and quantitative mineral resource general survey on massive fine particles in a giant deposition system becomes possible.

The invention discloses a method for depicting the boundary of a sedimentary system through a heavy mineral combination based on an intelligent sensing system, and relates to the technical field of geological exploration, and the method comprises the steps: obtaining the heavy mineral content data of a sedimentary rock sample collected by a target layer section and a peripheral exposed section of the target layer section in a research area through the intelligent sensing system; carrying out statistics on the contents of various heavy minerals in the collected samples, calculating the percentage of each heavy mineral, and carrying out data arrangement to form a data table; and importing the heavy mineral content data into data analysis software, carrying out Q-type clustering analysis, and classifying according to the similarity between samples. According to the method, the heavy mineral content data of the sedimentary rock sample is obtained through the uniformly distributed sampling points, compared with traditional single-point sample analysis, the spatial distribution characteristics of a material source system in a research area can be more comprehensively reflected, the boundary of a sedimentary system can be accurately divided, the recognition precision of sedimentary facies distribution is improved, and the analysis accuracy of the sedimentary facies is improved. And more detailed basic data are provided for geological research and resource exploration.

The invention provides a gold ore phase analysis method, and belongs to the field of mineral analys.The gold ore phase analysis method comprises the steps that a gold ore sample is prepared into ore pulp, the pH value is adjusted to 10-11, ultrasonic cavitation treatment is conducted after polyethylene glycol is added, and limonite turbid liquid and sedimentation bottom mud are obtained through separation; the turbid liquid is subjected to flocculation precipitation, drying, roasting, acid dissolution and impurity removal, and the limonite gold-loaded grade is obtained through the mass difference before and after dissolution and gold concentration determination; separating metal sulfide ore heavy minerals and gangue minerals from the settled bottom mud through artificial heavy elutriation, performing acid dissolution and impurity removal on the metal sulfide heavy minerals, and calculating the gold loading grade of the metal sulfide heavy minerals through mass difference and gold concentration determination; after gangue minerals are subjected to oxidizing roasting, the gold content is measured after concentrated acid dissolution; and calculating the distribution rate of gold based on the result. The gold loading grade and distribution of the limonite phase, the metal sulfide ore phase and the gangue mineral phase are measured in a split-phase mode, the method is highly matched with the gold ore development process, operation is easy and convenient, the result is reliable, and beneficiation and metallurgy technological process formulation and technical index pre-judgment can be effectively served.

The invention discloses a processing analysis method for a coarse grain-containing gold ore sample. The processing analysis method comprises the following steps: step 1, crushing, screening, uniformly mixing and splitting the coarse grain-containing gold ore sample; 2, fine crushing and heavy sand separation are conducted, and a heavy sand sample and a light mineral sample are obtained; 3, the heavy sand sample is subjected to wet digestion analysis, and the gold content is measured; 4, processing the light mineral sample, and determining the gold content; and 5, calculating the gold content of the coarse-grain gold ore sample. According to the method, natural gold is separated and enriched from the sample through heavy sand separation, the situation that large-particle-size natural gold is difficult to disperse uniformly in the machining process is avoided, the precision and accuracy of the gold content detection result are improved, then the heavy sand sample is subjected to wet digestion analysis, the roasting process is removed, the natural gold loss risk is reduced, and the detection accuracy is improved. Finally, the weighted average value of the gold content of the heavy sand sample and the light mineral sample is used as the gold content of the coarse-grain-containing gold ore sample, the determination precision is improved, and the method is suitable for the technical field of mineral processing analysis.

The application discloses a feeding device of a mining conveyor and a use method thereof, and relates to the technical field of mining equipment. The feeding device comprises a buffer frame, a buffer mechanism is arranged outside the buffer frame, the buffer mechanism comprises a buffer groove, a flap is movably connected inside the buffer groove, a rotating shaft is fixedly connected through the body of the flap, the rotating shaft is rotatably connected through the body of the buffer frame, a connecting groove is formed in the outer surface of the flap, a cutter is movably connected inside the connecting groove, the cutter is rotatably connected with the inner surface of the buffer groove, a rotating rod is fixedly connected through the body of the cutter, and the rotating rod is rotatably connected with the inner surface of the buffer groove. The feeding device solves the problem that, when the existing feeding device of the mining conveyor is used, a large-volume and heavy mineral falls with large kinetic energy, which easily causes the device to be damaged and unable to be normally used, and the mineral to be deviated and to fall.

A method, system, and apparatus for recovering fine heavy minerals from particulate ore. At least two inclined recovery surfaces are provided for parallel operation, and a liquid slurry containing the heavy minerals is supplied to at least one of the surfaces to remove the heavy minerals from the slurry in a heavy minerals capture cycle. In a cleaning cycle, the heavy minerals are released from the at least one surface for collection, which release is preferably achieved by applying water jets which may be disposed on spray bars positioned along the length of the surface and may be applied sequentially to drive the heavy minerals toward a discharge end for collection. A valve arrangement allows the liquid slurry to engage one surface for the heavy mineral capture cycle, while diverting the liquid slurry away from another surface to allow the cleaning cycle, and the valve arrangement may be automatically controlled.

The invention discloses a heavy mineral placer prediction method, device and equipment based on paleo-coastline reconstruction, and the method comprises the steps: determining the paleo-sea level relative height of a sample region, and generating a target paleo-coastline through a region growing algorithm; generating an ancient landform elevation model, identifying a plurality of ancient landform units based on the topographic position index, and screening out ancient landform exposure units; performing mineral identification on the ancient landform exposure unit to obtain a heavy mineral abundance map; constructing a hydrodynamic-deposition coupling model, identifying a sediment accumulation area of the sample area, and comparing the sediment accumulation area with the heavy mineral abundance map to obtain a heavy mineral enrichment area; dividing a positive sample area and a negative sample area, and training to obtain a heavy mineral placer prediction model; a mineralization probability distribution diagram of the target area is obtained through prediction, and the heavy mineral target area is determined according to the mineralization probability distribution diagram. The method improves the prediction precision of the mineralization probability of the heavy minerals, thereby improving the efficiency and accuracy of positioning and exploration of heavy mineral placers, and can be applied to the technical field of resource detection.

The application discloses a kind of multi-river confluence material source source-sink analysis method and analysis device, and multi-river confluence material source source-sink analysis method includes: obtaining the content of each heavy mineral in each mineral sample in research area, and research area is the collection area of multiple rivers;According to the heavy mineral assignment formula, the sum of the heavy mineral content of each mineral sample is calculated, and the mineral samples in the research area are classified according to the calculation result, and the source direction of each type of mineral is analyzed;According to the classification result of mineral sample, the ratio method is used to cluster analysis on the mineral sample in each type of mineral, and a cluster diagram is obtained;Based on the cluster diagram, and combined with the source direction of each type of mineral and the geological characteristics of research area, the source direction of each mineral sample in each type of mineral in research area is determined by using fuzzy cluster analysis method;It can further finely divide the source direction, improve the accuracy of source source-sink analysis result, and the analysis operation convenience.

The invention discloses a process for directly purifying quartz sand through gravity-flotation combined separation, and belongs to the technical field of deep processing of non-metallic ores. An existing acid leaching-roasting method is large in pollution and high in cost, and impurities such as Fe, Ti and Al are difficult to remove at the same time through single reselection or flotation. The method comprises the following steps: firstly, crushing raw ore, performing rod milling, and classifying by a cyclone until d90 is equal to 0.15 mm; then combined reselection is conducted through a two-section table concentrator and a centrifugal machine, pre-enriched concentrate with SiO2 larger than or equal to 99.2% is obtained, and the heavy mineral removal rate is larger than or equal to 65%; then, under different pH conditions, lauric acid, a neutral oil emulsified collecting agent and a mixed amine collecting agent are used for collecting mica and feldspar in a segmented mode, so that the grade of SiO2 is increased to be larger than or equal to 99.9%, and Al2O3 and Fe2O3 are reduced to be larger than or equal to 85% and larger than or equal to 70% relative to gravity concentrate; finally, deionized water washing and vacuum drying are conducted, and the high-purity quartz sand is obtained. The whole process is free of hydrofluoric acid and high-temperature roasting, the recovery rate of SiO2 with the size fraction of-0.6 + 0.1 mm is increased to 93-95%, product indexes are stable, equipment is conventional, and industrial popularization is easy.

This invention provides a heavy mineral sorting disc device, comprising: a base, a sliding plate mounted on the top of the base, a horizontal glass plate mounted on the top of the sliding plate, an adjusting frame fixedly mounted on one corner of the top of the base, an adjusting groove formed on one side of the adjusting frame, an adjusting component disposed inside the adjusting groove, the adjusting component including a knob, a threaded rod, and an adjusting block, and a vertical glass plate fixedly mounted on one side of the adjusting block. This invention allows heavy minerals to be placed on top of the horizontal glass plate and pulled by hand, causing the heavy minerals on top of the horizontal glass plate to be evenly scraped and leveled by the vertical glass plate, facilitating observation under a stereomicroscope and subsequent sorting work. Rotating the knob causes the adjusting block to move the vertical glass plate up and down, allowing the distance between the vertical and horizontal glass plates to be adjusted according to the mineral particle characteristics.

The invention provides a sandstone type uranium ore enrichment area positioning method based on a material source-sedimentary lobe, and the method comprises the following steps: collecting field core logging and drilling data, and building a uranium-bearing rock series stratigraphic framework; performing ore control factor data statistics according to the uranium-bearing rock series stratigraphic framework, importing corresponding statistical data into a drawing tool, and generating a uranium reservoir spatial distribution diagram and a uranium reservoir heavy mineral spatial distribution diagram; according to the uranium reservoir spatial distribution diagram and the heavy mineral spatial distribution diagram, obtaining a material source direction and a sedimentary lobe range, and carrying out spatial description on a material source-sedimentary lobe body; rebuilding a uranium mineralization source and sink model by taking the material source-sedimentary lobes as units; according to the method, the ore control factors of the uranium reservoir, the reduced geologic body and the metamorphic alteration zoning are analyzed, the important prospecting mark is tracked by taking the material source-sedimentary lobe as the unit, and the spatial distribution of the uranium mineralization body is predicted according to the important prospecting mark, so that the ore exploration accuracy and prospecting efficiency of the sandstone type uranium ore are improved.

The utility model discloses a tooth type heavy ore feeder which comprises an annular supporting frame, an annular fixing frame, an ore crushing box, a shaft column, an ore crushing roller, an ore discharging hopper, a dust collection mechanism and a planetary transmission mechanism. The bottom of the outer disc is fixedly connected with a supporting column, the upper surface of the outer disc is fixedly connected with a fixing support, and the outer surface of the bottom of the outer disc is fixedly connected with a stabilizing support. A modular design is adopted, in the aspect of a transmission structure, a planetary gear transmission mechanism is adopted, the characteristic of multi-tooth meshing transmission is utilized, driving torque is evenly distributed to all meshing tooth faces, the overall bearing capacity of a transmission system is remarkably improved, the conveying requirement of heavy mineral aggregates with the large particle size and the high specific gravity can be stably met, and meanwhile the conveying efficiency of the heavy mineral aggregates with the large particle size and the high specific gravity is improved. Planetary gear transmission has the characteristic of high transmission efficiency, energy loss in the power transmission process can be effectively reduced, stable operation of the rotating disc is achieved in cooperation with driving output of the motor, and rotating speed fluctuation caused by mineral aggregate load fluctuation is reduced.

The invention relates to the technical field of mineral processing, and particularly discloses a method for recovering titanium from vanadium titano-magnetite tailings, which comprises the following steps: carrying out size classification by adopting a high-frequency vibrating screen, carrying out table gravity separation on products with different size fractions and whole size fractions, and preliminarily separating out heavy mineral components; according to the magnetic strength of the minerals, the magnetic minerals are separated gradually, and the non-magnetic minerals are thrown away; the optimal field intensity is determined, shaking table gravity separation is conducted on the heavy minerals of the selected size fraction, and high-intensity magnetic separation impurity removal is conducted on obtained concentrate; the magnetic separation concentrate is subjected to desulfurization flotation, a collecting agent and a foaming agent are sequentially added, and sulfide ore is obtained after roughing and scavenging; carrying out titanium flotation on the desulfurized and floated tailings, collecting, controlling the roughing concentration, the flotation fineness and the concentration, and carrying out titanium flotation by adopting one-time roughing and five-time concentration; and concentrate obtained after separation is subjected to low-intensity magnetic separation iron removal to obtain titanium concentrate, and the problem that in the prior art, micro-grade ilmenite is difficult to recycle is solved.

The utility model provides a mineral concentrating machine, which belongs to the technical field of ore treatment and comprises a concentrate receiving hopper and a push plate. During use, control switches of the two driving wheels are turned on, the cell belt transports heavy minerals to the topmost end from bottom to top, flushing water sprayed out of the backflushing water pipe flushes the driving wheels, the backflushing water is sprayed out of the backflushing water pipe, the backflushing water is sprayed out of the backflushing water pipe, and then the heavy minerals are conveyed to the backflushing water pipe through the backflushing water pipe, so that the heavy minerals are conveyed to the backflushing water pipe through the backflushing water pipe. For example, table tennis balls go down stairs naturally and efficiently, the resistance of the heavy ores is stable, round and slow due to the upwarp gradient, superfine ores just reach a separation critical line, cannot be taken away by water and are discharged through a discharging pipe, and the purpose of washing and recycling the concentrates is achieved, so that during mineral separation, through the laminar flow rolling anti-hardening mineral separation technology, the mineral separation efficiency is improved, and the mineral separation efficiency is improved. Hardened minerals are accelerated, amplified, loosened and sunk, washing is clean and reaches the standard, and meanwhile tailings can be efficiently recycled.

The present application belongs to the technical field of geological sample analysis, and particularly relates to a heavy mineral fidelity pre-treatment and automatic characterization method based on artificial intelligence. The method is based on a medium-low hardness heavy mineral fidelity sorting and purification technology, an integrated multifunctional target manufacturing technology, an intelligent microscopic image acquisition technology, and intelligent identification and feature extraction based on deep learning. The method obtains fidelity heavy mineral particles that maintain the original three-dimensional morphology, internal thermal geological records that have not been reset, and population composition that has not been subjected to any systematic deviation screening, and calculates a series of morphological parameters such as elongation coefficient, roundness, color, and other morphological parameters of each heavy mineral particle, and finally outputs a structured quantitative data report. The present application realizes multidirectional and intelligent fidelity from the source, and the automatic process greatly improves the analysis flux and objectivity, making it possible to conduct systematic and quantitative mineral resource survey on a large amount of fine particles in a giant sedimentary system.

The invention discloses a spiral chute mining device for tungsten ore mining and a using method, and relates to the field of spiral chutes, the spiral chute mining device comprises a base, a stand column is fixedly arranged at the end of the base, a spiral chute body is fixedly arranged on the outer surface of the stand column, and a sorting assembly is assembled at the end of the stand column and located above the path of the spiral chute body. Comprising a scraping plate and a conical block, dredging acting force is applied to screened retentate through the scraping plate, and meanwhile the conical block is used for adjusting the circulation section of the spiral chute body. According to the spiral chute mining device for tungsten ore mining and selection and the using method, dredging acting force is applied to accumulated minerals through the separation assembly, the conveying opening can be prevented from being blocked, and local deposition is reduced; and meanwhile, the overall liquidity of a conveying groove channel can be adjusted according to the mineral accumulation state, concentration distribution is detected through the opening degree of the conveying end, differential adjustment is reduced, stable and uniform hydraulic conditions are provided for separation of light and heavy minerals, and therefore the mixing rate is reduced.

The application discloses a shallow sea heavy mineral sand mine resource exploration method and related equipment, and the method comprises the following steps: obtaining pre-research data of a target shallow sea area, predicting an exploration scheme based on the pre-research data, and arranging a bottom seismograph in the target shallow sea area based on the exploration scheme; collecting passive source micro-motion data by using the bottom seismograph, and extracting original data from the passive source micro-motion data based on a preset data quality standard; constructing a horizontal and vertical spectral ratio curve based on the original data, performing frequency spectrum separation on the horizontal and vertical spectral ratio curve, and obtaining a low-frequency curve of a bedrock resonance peak; constructing a palaeotopographic map through bedrock surface depth inversion based on the low-frequency curve; obtaining a regional geological model of the target shallow sea area, superimposing and analyzing the palaeotopographic map and the regional geological model, and obtaining an evaluation result of heavy sand mine resource potential. The application can effectively improve the exploration directivity and the accuracy of resource potential evaluation by identifying the change of ore-controlling landforms, and can be widely applied to the technical field of data processing.

The invention belongs to the technical field of deep sea mining, and discloses a fine particulate matter mineral desliming and enrichment mineral separation device and method. The device comprises a sorting barrel, a water supply unit, an inclined plate precipitation unit and an ultrasonic unit. A collecting hopper in the sorting barrel divides the fixed cavity into a sorting cavity and a water inlet cavity. The water supply unit communicates with the water supply cavity, and the inclined plate sedimentation unit is arranged on the top side of the sorting barrel and communicates with the sorting cavity. Silt particles in the mineral slurry flow upwards along with water flow, and a part of minerals with large density move downwards to a collecting hopper and are discharged through a discharging opening; and the other part of minerals enter the inclined plate sedimentation unit along with the rising water flow and penetrate through gaps of inclined plates, when the water flow flows through the gaps, particles settle on the inclined plates, heavy mineral particles slide down from the inclined plates, return to the separation cavity and slide to a collection hopper, and light sediment particles flow upwards along with the water flow and flow to a collection pool. The device can effectively screen mineral particles, does not need to add chemicals, is green and environment-friendly, and can be suitable for an offshore operation environment.

The invention belongs to the technical field of mineral density measurement, and particularly discloses a heavy mineral density measurement method and system, and the measurement method comprises the following steps: obtaining the resonant frequency offset detected by a piezoelectric ceramic sensor; according to the resonant frequency offset and a predetermined mass sensitivity constant, calculating the mass of the heavy mineral sample according to a Sauerbrey formula; acquiring a plurality of two-dimensional images obtained by performing multi-angle image acquisition on the heavy mineral sample by a microscope; based on the plurality of two-dimensional images, generating a three-dimensional model of the heavy mineral sample through a three-dimensional reconstruction algorithm, and calculating the volume of the heavy mineral sample; the three-dimensional reconstruction algorithm comprises feature point matching and alignment, sparse point cloud generation, dense point cloud generation and surface grid construction; calculating the density of the heavy mineral sample according to the mass and the volume. According to the invention, high-precision density measurement of the heavy mineral sample with small size and irregular shape can be realized.

An industrialized process for recovering fine heavy minerals such as gold from particulate ore includes guiding a liquid slurry over an inclined surface with components thereon such as blankets, corduroy, carpet, canvas, magnetic mats, ribbed rubber mats, fine carpets, or like material which collect the heavier material and in a cleaning cycle releasing the trapped particles for collection by applying sequentially water jets from a plurality of water spray nozzles. Continuous operation can be obtained by installing surfaces in parallel, with an automated valve arrangement to divert feed away from a selected one of the surfaces when in the cleaning cycle. The surfaces are stacked one on top of another to increase feed capacity where the feed supply is arranged to feed to all stacked surfaces as a common supply and wherein the feed, water spray, concentrate, and tailings automated control valves are shared between the surfaces.

1. Name of the product in this design: Gold Panning Basket. 2. Purpose of this design: This design is a gold panning basket used to separate heavy minerals such as gold from sand mines. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention provides an electrochemical pretreatment method for lead-containing heavy sand, and belongs to the technical field of hydrometallurgy. According to the method, through two-step electrolysis, NaCl is electrolyzed, galena in the lead-containing heavy sand is oxidized, lead chloride and elemental sulfur are generated, then manganese salt is electrolyzed, metal sulfide in the lead-containing heavy sand is oxidized, and pretreatment of the lead-containing heavy sand is completed. According to the method, NaCl and Mn < 2 + > can be electrolyzed step by step by regulating and controlling the concentration proportion of NaCl and manganese salt in the electrolyte and the voltage in two-step electrolysis, and reduction of lead in the lead-containing heavy sand and oxidation of metal sulfide are sequentially achieved. According to the pretreatment method, resource recycling of the lead can be achieved, sulfide in the lead can be removed, qualified raw materials are provided for follow-up gold smelting, the method is short in process, convenient to operate, simple in equipment and environmentally friendly, and a valuable technical scheme is provided for the field of precious metal hydrometallurgy.

The invention discloses a vertical heavy medium mill and a mineral processing method, comprising a box body and a buffer support member arranged at the lower end of the box body, a sound insulation layer for reducing noise is arranged on the surface of the box body, a driving motor is installed at the upper end of the box body, an output end of the driving motor is connected and fixed to the upper end of a stirring shaft, and the lower end of the stirring shaft is rotatably connected to the bottom of the box body, stirring blades for stirring materials are distributed on the stirring shaft, and the interior of the box body is filled with grinding balls for grinding materials and heavy medium liquid for heavy medium separation. The present application can achieve 95%-100% dissociation of valuable minerals in the mineral grinding process, and effectively protects the particle size of the material without causing over-grinding, so as to achieve on-demand directional grinding and save energy consumption, and the dissociated valuable minerals and gangue minerals are separated by the heavy medium in the mill, the light minerals float up, and the heavy minerals sink, and the two can be separated in time and discharged from the mill, so as to achieve simultaneous grinding and separation.

The invention provides a method for extracting cassiterite through reselection of smelting waste residues, and belongs to the field of solid waste resource utilization. Tantalum-niobium wet smelting residues are subjected to water leaching pretreatment, soluble impurities are removed, and tin-grade-enriched water leaching residues are obtained; and the water leaching residues are subjected to size mixing and then centrifugal reselection, and tin concentrate is obtained. According to the method for recovering cassiterite from tantalum-niobium smelting slag, the defects in the prior art are overcome, the method is short in process, low in cost and capable of achieving ultrahigh recovery rate and high-grade enrichment at the same time, and the core of the technical scheme lies in that the synergistic effect between water leaching pretreatment and centrifugal reselection is found; according to the method, soluble impurities are removed through water leaching, the grade is preliminarily enriched, then the strong capturing capacity of a centrifugal force field on fine-fraction heavy minerals is combined, the high recovery rate and high-grade enrichment are achieved at the same time, the cassiterite recovery rate is larger than or equal to 85%, the final concentrate grade is larger than or equal to 20%, and the comprehensive enrichment ratio gt is achieved; and the index is far superior to that of the traditional reselection process.

The invention belongs to the technical field of energy-saving mine separation equipment, and relates to energy-saving mine separation equipment which comprises a feeding pipe, a conical separation barrel, a heavy mass collecting assembly and a secondary separation assembly. The feeding pipe tangentially conveys ore pulp into the conical separation barrel and is matched with the driving motor to drive the separation barrel to rotate reversely, and separation of heavy mineral particles and light mineral particles is achieved through centrifugal force. Heavy minerals settle along the barrel wall and are collected by a movable bottom plate controlled by an electric telescopic rod, and light minerals are discharged through an overflow pipe. The conical base is provided with a spiral rising groove, and the ore pulp rising force is enhanced to improve the separation efficiency. The equipment further comprises a precipitation assembly, mineral layering is achieved through centrifugal precipitation and spiral conveying, heavy minerals, medium minerals and light minerals are separated through corresponding discharging openings, and the medium minerals can flow back to be retreated. The method has the advantages of high separation efficiency, low energy consumption, high recovery rate and the like.

The invention relates to the technical field of mineral separation, and discloses an efficient dry powder sand and mineral substance separation method based on gravity wind energy and electromagnetic energy, which comprises the following steps: S1, feeding a to-be-treated material into a crushing and grading module; s2, feeding the crushed materials into a grading screening module; and S3, the graded materials are sequentially fed into a gravity separation unit, a wind energy separation unit and an electromagnetic separation unit to be subjected to multi-stage separation. According to the efficient dry powder sand and mineral substance sorting method and system based on gravity, wind energy and electromagnetic energy, crushed and graded materials are sequentially fed into the gravity sorting unit, the wind energy sorting unit and the electromagnetic sorting unit to be subjected to multi-stage sorting, and a centrifugal force field and a gravity field generated by a rotary centrifugal separator are used for stacking and separating density difference; lightweight dry powder sand and heavy minerals are separated by speed-adjustable airflow generated by the multistage fan system, and magnetic minerals and non-magnetic minerals are separated by a dynamic electromagnetic field generated by the alternating electromagnetic field generation device, so that the separation efficiency is improved, and the energy consumption is reduced.

The invention relates to a comprehensive recovery method of lithium slag, and belongs to the technical field of lithium slag recovery and utilization. According to the comprehensive recovery method for the lithium slag, the lithium slag is pulped and then subjected to gravity separation / magnetic separation, obtained heavy minerals or magnetic minerals are concentrated and then subjected to gravity separation, and tantalum-niobium-tin bulk concentrate and gravity separation tailings are obtained; dewatering and drying the gravity separation tailings to obtain a basalt fiber raw material; light minerals or non-magnetic minerals obtained through reselection / magnetic separation are concentrated and floated, and a retarder and a ceramic raw material are obtained; and concentrating the tantalum-niobium-tin bulk concentrate, and performing magnetic separation to obtain tantalum-niobium concentrate and tin concentrate. According to the method, the multi-metal co-extraction technology is adopted, tantalum, niobium, tin and other metals are recovered from the lithium slag at the same time, the basalt fiber raw material, the ceramic raw material, gypsum and the like are prepared, and the resource recovery efficiency and economic benefits are improved. The recovery process is environment-friendly, generation and emission of harmful substances are reduced, clean production is realized, and the method conforms to the green sustainable development concept advocated by the country.