140 results about "Magnetic minerals" patented technology

The invention relates to a flotation method for niobium-containing minerals, and belongs to the technical field of mineral separation. The method comprises the steps that niobium-containing ore is subjected to crushing, ore grinding and size mixing, obtained ore pulp is subjected to weak magnetic treatment to remove strong magnetic minerals, after the pH of magnetic separation tailings is adjusted, a flotation reagent containing an iron mineral inhibitor and an amine collecting agent is added for silicon-niobium bulk flotation, and after the pH of obtained silicon-niobium bulk concentrate is adjusted, the obtained silicon-niobium bulk concentrate is subjected to flotation separation. And a flotation reagent containing a hydroximic acid metal organic complex collecting agent and a siliceous mineral inhibitor is added for silicon-niobium separation flotation, and niobium concentrate is obtained. According to the method, iron gangue mineral removal is achieved through step-by-step flotation by means of the amine collecting agent, silicon separation is achieved by means of the hydroximic acid metal organic complex collecting agent, efficient enrichment of the niobium mineral is achieved, the step of strong magnetic iron removal is avoided, the process is simplified, and the loss rate of the niobium mineral is reduced.

The invention discloses a fluoride-free flotation-microbiological leaching-multistage magnetic separation synergistic tailing purification process, which takes mine tailings as raw materials and is realized by the following steps: 1, fluoride-free flotation desliming and impurity removal: replacing hydrofluoric acid with a novel anion collector (fatty acid derivative), and preferentially removing mica and feldspar under the condition that the pH is 2.5-3.5; 2, removing iron and aluminum by microbiological leaching: leaching for 48 hours at the temperature of 35 DEG C by utilizing an acidophilus bacillus ferroxidans bacterial solution, and dissolving Fe2O3 and Al2O3 in a wrapped state; 3, high-gradient magnetic separation refining: removing magnetic minerals through 1.2 T strong magnetic separation, and then separating weak magnetic impurities through 0.8 T weak magnetic separation; the indexes of the final product are as follows: the purity of SiO2 is greater than or equal to 99.9%, the whiteness is greater than or equal to 94% (ISO standard), the content of Fe2O3 is less than or equal to 80ppm, Al2O3 is less than or equal to 1200ppm, and the requirements of electronic grade (IOTA-4 standard) quartz powder are met.

The invention belongs to the technical field of mineral separation processes, and particularly relates to a magnetic separation process for low-grade potassium feldspar ore, which comprises the following steps: (1) crushing: crushing low-grade potassium feldspar raw ore; (2) ore grinding: grinding the fine particle raw materials to obtain ore pulp; (3) desliming: desliming the ore pulp to obtain a material containing magnetite and other weakly magnetic minerals; (4) removing strong magnetic magnetite through weak magnetic separation; (5) superconducting magnetic separation: carrying out superconducting magnetic separation on the magnetite-removed material to obtain potassium feldspar concentrate; (6) concentration is conducted, specifically, concentrate is subjected to concentration, and residual impurities are removed; and (7) dewatering and drying: dewatering and drying the concentrated concentrate to obtain a final product. According to the method, a two-step magnetic separation process is adopted for the low-grade potassium feldspar raw ore, weakly magnetic iron-containing impurities in the potassium feldspar raw ore are effectively removed, the impurity removing and whitening effects are achieved, the potassium feldspar powder with high purity and high whiteness is obtained, and the method is free of pollution and suitable for large-area application and popularization.

The invention relates to magnetic mineral concentration equipment, and belongs to the technical field of mineral separation, the magnetic mineral concentration equipment comprises a magnetic flotation column cavity, an overflow groove, a stirring device, a feeding device, a magnet exciting coil and a microbubble generating device, and the magnetic flotation column cavity comprises a conical concentration device arranged at the bottom; the overflow groove is formed in the upper part of the magnetic flotation column cavity; the magnet exciting coil is arranged on the periphery of the magnetic flotation column cavity; the microbubble generation device is arranged at the lower part of the magnetic flotation column cavity and / or above the conical concentration device; the feeding device is communicated with the magnetic flotation column cavity and is used for conveying ore pulp to the magnetic flotation column cavity; the microbubble generating device is used for generating bubbles and conveying the bubbles to the magnetic flotation column cavity; the stirring device is arranged in the magnetic flotation column cavity and used for stirring ore pulp; strong magnetic and hydrophilic mineral particles in the stirred ore pulp are discharged through a conical concentration device to become concentrate, and foam formed by weak magnetic or non-magnetic and hydrophobic mineral particles is discharged through an overflow groove to become tailings.

The invention discloses a step-by-step enrichment flotation method for niobium ore, and belongs to the technical field of mineral processing. The method comprises the steps that niobium ore is subjected to crushing, ore grinding and size mixing, then weak magnetic treatment is carried out to remove strong magnetic minerals, after pH adjustment is carried out on magnetic separation tailings, a siliceous mineral inhibitor, a foaming agent and a hydroximic acid metal organic complex collecting agent are added for iron-niobium bulk flotation, and obtained iron-niobium pre-enriched concentrate is subjected to reagent removal treatment; and then an amine collecting agent and an iron mineral inhibitor are adopted for iron-niobium separation flotation, and niobium concentrate is obtained. According to the method, the collecting characteristic advantages of a hydroximic acid metal organic complex collecting agent and an amine collecting agent on siliceous minerals, iron minerals and niobium minerals are combined, efficient separation of silicon, iron and niobium is achieved by conducting flotation desiliconization firstly and then conducting flotation deferrization, the conventional desiliconization and deferrization technological process is simplified, the loss rate of the niobium minerals is reduced, and the yield of the niobium minerals is increased. The resource utilization of the niobium ore is effectively realized.

The low-grade magnetite magnetic separation process comprises the following steps that 1, raw ore is crushed, the raw ore is magnetite with the magnetic iron content not higher than 10%, raw ore particles are obtained after the raw ore is crushed, and the particle size range of the raw ore particles is 1-2.5 cm; 2, primary strong magnetic separation is conducted on the raw ore particles, middlings and tailings I are obtained, the iron grade of the middlings is 14%-22%, and the iron grade of the tailings is 3%-5%; 3, the middlings are sequentially subjected to first-stage ore grinding, second-stage magnetic separation, second-stage ore grinding and third-stage magnetic separation, and iron ore concentrate and tailings III are obtained; and the tailings I are sequentially subjected to tailings grain decomposition and tailings magnetic separation to obtain tailings II and tailings III, and the tailings II are returned to secondary grinding again. According to the method, the tailings I are subjected to grain dissolving-regrinding optimization, the tailings I are subjected to secondary dissociation through a high-pressure roller mill or a dry crusher, micro-fine particle magnetic minerals are released, after magnetic separation is conducted, the tailings II are returned to the original process for further grain dissolving and magnetic separation, qualified iron ore concentrate products are obtained, and resource waste is avoided.

The invention discloses a magnetic mineral particle detection method and system fused with an attention mechanism under a microscope, and the method comprises the steps: constructing a multi-branch convolution block through the combination of multi-scale convolution kernels and a fusion mechanism, and enabling the multi-branch convolution block to extract branch features of different scales through parallel multi-scale convolution, and strengthening the extracted branch features by adopting different types of strengthening operations to obtain strengthened branch features of different scales, and fusing the strengthened branch features of different scales, so that local details and global context information of the image can be captured at the same time by fusing the strengthened features. Therefore, the comprehensive understanding capability of the network on the image features is improved, and the detection precision of the magnetic mineral particles under the microscope is improved.

The invention discloses a method for preparing high-purity quartz and recovering an iron element based on high-silicon tailings, and belongs to the technical field of comprehensive utilization of resources and preparation of high-purity quartz. According to the method, high-silicon tailings are sequentially subjected to mineral dissociation, low-magnetic-field roughing, high-magnetic-field scavenging, flotation and ultrasonic acid leaching treatment, and refined quartz is obtained; and carrying out multi-stage gradient chloridizing roasting and hot-pressing acid leaching treatment on the refined quartz of which the gas-liquid inclusion index and transparency meet the requirements to finally prepare the high-purity quartz of which the SiO2 purity is greater than or equal to 99.995%. In addition, for strong magnetic minerals generated in the magnetic separation process, the iron content of the strong magnetic minerals reaches the standard, the strong magnetic minerals react with the acid leaching filtrate under the ultrasonic strengthening condition to leach iron ions, and iron-rich filtrate is subjected to an iron precipitation reaction to generate iron carbonyl. The method provided by the invention not only provides a reliable judgment basis and a complete technical route for preparing high-purity quartz from the high-silicon tailings, but also opens up a new way for resource utilization of the tailings, and has remarkable industrial application value and environmental benefits.

The invention discloses an efficient and environment-friendly wet type permanent magnet drum type magnetic separator for mining industry, and relates to the field of magnetic separators. An efficient environment-friendly wet type permanent magnet drum magnetic separator for the mining industry comprises a rack, a magnetic separation box is fixedly mounted on the rack, a mounting shaft is mounted on the rack through a support, a magnetic separation drum is rotationally connected to the mounting shaft, and the magnetic separation drum is located in a magnetic separation groove of the magnetic separation box; according to the magnetic separation device, ferromagnetic minerals can be rapidly and effectively separated from ore pulp, the magnetic separation efficiency is greatly improved, impurity minerals mixed in the ferromagnetic minerals can be effectively removed by knocking and vibrating the magnetic separation roller, the impurity content in the magnetic separation minerals is reduced, the purity of the ferromagnetic minerals is improved, subsequent processing is not needed, and the magnetic separation efficiency is improved. And then the magnetic separated minerals are selected, so that the time and the cost are saved, the efficiency is greatly improved, and meanwhile, the quality of a final product is also improved.

The invention provides a magnetic separator for a mine plant, and belongs to the technical field of magnetic separators. The transverse shafts are fixedly arranged on the inner walls of the two sides of the screening bin, and the outer surfaces of the transverse shafts are movably sleeved with screening plates. During use, mineral aggregates are poured into the screening bin through the feeding hopper, the mineral aggregates are screened through through holes in the screening plates, one side of a pulling plate makes contact with one side of each screening plate, and therefore the screening efficiency is improved; a screening plate is pulled to further enable a plurality of connecting plates and a plurality of second telescopic rods to pull a plurality of first springs, when a pulling plate does not make contact with the screening plate, the connecting plates are pulled through the elastic force of the first springs, and under the back-and-forth movement of the screening plate, mineral aggregates rapidly slide to the interior of the crushing bin on one side of the screening plate; therefore, when the magnetic separator is used, mineral materials are screened, the situation that due to the fact that the mineral granularity is too large, magnetic minerals cannot be effectively adsorbed, and the separation effect is reduced is prevented, and the screening effect is good.

The invention discloses a vertical ring magnetic separation device adopting a saddle-shaped coil and a magnetic separation method of the vertical ring magnetic separation device, and relates to the technical field of mine metallurgy, the vertical ring magnetic separation device comprises an integral support, a magnet system, a rotating ring, a feeding assembly and a discharging assembly, and the magnet system is fixedly arranged on the integral support and surrounds part of the rotating ring; the magnet system comprises at least one saddle-shaped coil, and the arc-shaped face, facing the rotating ring, of the saddle-shaped coil is matched with the ring face of the rotating ring. The saddle-shaped coil is adopted, the arc-shaped working face of the saddle-shaped coil is matched with the height space of the annular contour of the rotating ring, magnetic field distribution is fundamentally optimized, magnetic field energy is highly concentrated and accurately acts on a magnetic medium filled in the rotating ring, the field intensity far exceeding that of a traditional runway-shaped coil can be obtained, and the collecting capacity of weak magnetic minerals is remarkably improved; the optimization of the magnetic field further reduces the dependence on the magnetic conductive yoke, so that the overall structure weight of the magnet system is reduced, and the cost is reduced.

The invention provides a high-added-value recycling method of silicon and iron elements in iron tailings, and relates to the technical field of high-value and resource utilization of metallurgical solid wastes. The method comprises the steps of iron tailing grinding, middle-stage magnetic separation, microwave roasting, water quenching, grinding, high-stage magnetic separation, first-stage hot-pressing acid leaching, vacuum roasting, water quenching, second-stage hot-pressing acid leaching, low-stage magnetic separation of weakly magnetic minerals, ultrasonic acid leaching for iron extraction, aging reaction, filtering, drying and roasting. And finally obtaining high-purity quartz powder of more than 4N grade and nano iron oxide of which the purity of Fe2O3 is more than 95%. According to the method, silicon and iron elements in the iron tailings are recycled in a layered and stepped manner, and the acid leaching filtrate generated in the preparation process of the high-purity quartz powder is subjected to closed treatment, so that valuable components of silicon and iron in the iron tailings are utilized at a high value to the maximum extent, and no secondary waste liquid is discharged; meanwhile, the problem of fluorine pollution in the traditional process is avoided in the process of preparing the high-purity quartz powder, and the method is low-carbon and green and has remarkable economic benefits.

The utility model discloses a medium box for fine fraction separation of a vertical ring high-gradient magnetic separator, which belongs to the technical field of magnetic mineral separation equipment and comprises two fixing plates. At least one supporting plate is located between the two fixing plates. The two ends of the multiple reinforcing medium rods are connected with the fixing plate and penetrate through the supporting plate. The multiple reinforcing medium rods are distributed along the edge and form a medium containing cavity with the fixing plate. A plurality of spaced medium rods are positioned in the medium accommodating chamber, and two ends of the spaced medium rods are connected with the fixing plate and penetrate through the supporting plate; the diameter of the spacing medium rod is not greater than that of the reinforcing medium rod; the magnetic medium is embedded in a gap between the adjacent interval medium rods; the reinforcing medium rods and the spacing medium rods penetrate through the supporting plate and are fixedly connected with the fixing plate, so that the structural strength can be improved; the reinforcing medium rods, the spacing medium rods and the magnetic medium are arranged in order, so that a compact mineral separation medium can be formed, and the recovery rate of fine-fraction minerals is increased; and the magnetic medium can be conveniently pulled out and cleaned, so that the cleaning difficulty is reduced.

The invention relates to the technical field of ore separation, in particular to titanium-zirconium ore tailing check separation equipment and method.The titanium-zirconium ore tailing check separation equipment comprises a variable-diameter chute and a magnetic enrichment assembly, and the variable-diameter chute comprises a low-speed layer, a high-speed layer and a medium-speed layer which are sequentially connected from top to bottom; the magnetic enrichment assembly is arranged on the inner ring of the variable-diameter chute; tailing ore pulp spirally flows at a low speed when entering the low-speed layer, magnetic minerals in the tailing ore pulp are attracted to the inner edge to complete sufficient sedimentation, radial layering is conducted under the centrifugal force effect of high-speed spiral flowing when the tailing ore pulp enters the high-speed layer, and magnetic aggregates generated by the magnetic minerals are disintegrated by repulsive force at the moment; ilmenite and zirconite are fully separated to improve the grade, magnetic minerals are enriched towards the inner edge again while the flow speed is reduced after the ilmenite and the zirconite reach the medium-speed layer, the ilmenite with the enriched inner edge is prevented from being scoured for the second time, and therefore the recycling rate is improved; the problem that the tailing recycling rate is low due to the fact that the fine grain content of the tailings is high and the sorting difficulty is high is solved.

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

A method and device for sorting lump ore relate to the mining and processing industry, and more particularly to technology for pre-processing ores containing a valuable component that has a low concentration and low mass fraction in the rock mass which correlate with the distribution of the component, or for pre-processing ores containing minerals with low magnetic susceptibility or non-magnetic minerals. The working of the device and the method are based on a 3D electromagnetic method which utilizes two systems: a 3D scanner (1) and an inductive sensor system (3) with electromagnetic coils. The two systems operate in a consolidated manner, with the 3D scanner (1) system acting as a master system and the inductive sensor system (3) acting as a slave system. The inductive sensor system (3) is configured in the form of a matrix (6) of coils, the parameters of which are stored in a computing unit (10). The 3D scanner (1) scans lumps of ore and generates a data array which is also supplied to the computing unit (10), which processes the data array and determines the order of activation of individual sensors.

The invention discloses a method for efficiently separating powdery lean magnetite through a magnetic roller, and belongs to the technical field of mineral processing. The method comprises the following steps: firstly, carrying out aggregate dispersion on mineral aggregates before selection, and dispersing aggregates by utilizing shearing force generated by vibration; and then the feeding material layer of the thinning magnetic roller is quantitatively and rapidly conveyed, so that secondary aggregates are prevented from being formed. According to the method, through collaborative optimization of three elements of high-frequency vibration of loose materials, high ore feeding speed and high weak magnetic field intensity, the bottlenecks of traditional fine ore dry magnetic separation in the aspects of material dispersity, separation dynamics and poor magnetic mineral recovery efficiency are broken through; accurate capture is achieved, separation is enhanced, the magnetic iron grade of separation tailings is reduced, and the tailing throwing rate of separation is increased.

The utility model belongs to the technical field of magnetic mineral screening, and particularly discloses a wet magnetic separator ore unloading device which comprises a water tank, the water tank is fixedly connected with a shell of a magnetic separator and located on one side of a roller of the magnetic separator, a flow guide plate is fixedly connected to the water tank, and the other end of the flow guide plate is adjacent to the roller of the magnetic separator. And a water supply assembly for injecting water into the water tank is arranged on the water tank. If a spray head of an existing ore unloading device is blocked, magnetic minerals cannot be completely unloaded. According to the utility model, the original ore unloading device for unloading ores by spraying water through a spray head is changed into the water tank with the flow guide plate, and the water tank is filled with water and is continuously filled with water, so that the overflowed water washes the surface of the roller of the magnetic separator through the flow guide plate, and magnetic ores on the surface of the roller are unloaded; and magnetic minerals on the surface of the roller of the magnetic separator can be conveniently and completely discharged on the premise of not being blocked.

The utility model discloses a magnetic separator for tailing treatment, which comprises a rack, a machine body is fixedly connected above the rack, a magnetic separation cylinder is rotatably connected in the machine body, a fixed plate is fixedly connected on one side of the rack, a first motor is fixedly connected on the fixed plate, a threaded rod is rotatably connected above the machine body, and a second motor is fixedly connected on the threaded rod. A feeding port is formed in the rack, and a dredging structure is connected to the outside of the threaded rod. According to the magnetic separator disclosed by the utility model, the dredging structure, the transmission structure, the threaded rod, the rotating rod, the feeding hole and the discharging hole are arranged, and the magnetic separator can be used for simultaneously dredging the areas of the feeding hole and the discharging hole through the matching of the dredging plate, the rotating plate and the dredging column; the phenomenon that the interiors of the feeding port and the discharging port are blocked due to excessive accumulation of tailing raw materials and screened magnetic minerals is avoided, due to the fact that the blocking phenomenon is reduced, the downtime of the magnetic separator is shortened accordingly, and therefore the separation efficiency of the magnetic separator is improved.

The application discloses a kind of weak magnetic mineral separation methods of magnetic seed circulating reinforced flocculation magnetic separation, raw material is broken to grinding ore to the fineness of-75µm content 60%-90%, ore powder is configured into ore pulp, 100-400 grams / ton of magnetic seed is added to ore pulp, at the speed of 700-1500rpm Realize selective flocculation, and the flocculation of ore pulp is given to high gradient magnetic separator, under the action of magnetic force, surface attachment magnetic seed's manganese mineral flocculation is selectively adsorbed to the surface of magnetic separation drum, and is collected after scraping plate, and it is manganese concentrate, and non-magnetic or weak magnetic gangue mineral is discharged as tailings with ore pulp flow, and high-grade manganese minerals are efficiently separated by using permanent magnet cylinder type magnetic separator to process manganese-loaded magnetic seed.The present application solves the problems of low recovery rate, complex process, poor recovery effect of micro-fine particles and high environmental risk faced by the current industry, significantly improves the manganese recovery rate and concentrate grade, and realizes the maximum utilization of manganese resources in tailings.

The invention relates to a silica ore dressing method which comprises the following steps: step 1, crushing raw ore of silica ore, step 2, grinding the crushed silica ore by adopting a ball mill, step 3, carrying out graded desliming treatment on the ground silica ore by using a hydrocyclone, step 4, carrying out weak magnetic separation on the deslimed silica ore, and step 5, carrying out magnetic separation on the deslimed silica ore. And 5, the non-magnetic material subjected to weak magnetic separation is subjected to strong magnetic separation, and silica concentrate is obtained. Before the ore is subjected to strong magnetic separation, strong magnetic minerals are removed through weak magnetic pre-separation, the strong magnetic separator is effectively prevented from being blocked, the operation stability and the production continuity of equipment are improved, various magnetic impurity minerals including intergrowth particles can be removed to the maximum extent through the whole technological process, and the production efficiency is improved. Such as hematite, limonite, biotite, ilmenite, pyrite and garnet.

The present application relates to the technical field of ore recovery, and particularly relates to a comprehensive recovery and utilization method of complex associated magnetite, which comprises a pretreatment stage, a sulfur tailing reinforced recovery and a desulfurization flotation operation. The magnetic roller separation device designed by the gradient magnetic field realizes effective separation of magnetic minerals and sulfur-containing minerals, and the two-stage wet magnetic separation equipment is used to improve the recovery rate of magnetic minerals, and then the sulfur content of the iron concentrate is reduced by optimizing the reagent adding mode and the flotation conditions. The present application can significantly reduce resource waste, reduce energy consumption and environmental pollution, and provides a green and efficient comprehensive recovery and utilization solution for complex associated magnetite.

The utility model relates to the technical field of ore magnetic separation, and discloses a dry drum-type ore magnetic separator which comprises a magnetic separator main body, a belt conveying device is arranged at the bottom of the magnetic separator main body, and a driving motor is fixedly connected to the top of the magnetic separator main body. According to the automatic sorting machine, the magnetic roller can automatically move to the position below the magnetic roller to carry out sorting work, then in the rotating process of the cam disc, the operation is repeated, so that the discharging plate rotates, the discharging port of the discharging plate does not coincide with the discharging port of the discharging partition plate, discharging work is stopped, then the discharging plate continues to rotate, and when the discharging ports coincide, discharging work is achieved again; and therefore, the device can control the discharging speed and the discharging amount, excessive material accumulation in the magnetic separator during continuous feeding is avoided, effective separation of magnetic minerals and non-magnetic minerals is prevented from being affected, and the separation effect of the magnetic separator is improved.

The invention discloses a beneficiation process for carbon-containing low-zinc pyrite, which relates to the technical field of mineral processing. The carbon-containing low-zinc pyrite is crushed, ground, and classified by a hydrocyclone to obtain slurry of a required particle size. Subsequently, a desludging cyclone and a flotation machine are used for combined decarbonization. Then, a high-efficiency selective collector is used to float the sulfur-selective flotation ore to obtain pyrite coarse concentrate and pyrite coarse tailings. A "one coarse, two fine, two scavenging, and one fine tailings are separately selected and discarded" process is adopted to improve the flotation rate and the grade of the flotation concentrate. Finally, a magnetic drum is used to scavenger the final tailings, and sulfur-containing magnetic minerals in the final tailings are recovered to improve resource utilization.

The utility model discloses a sorting device. The sorting device comprises a feeding part, a first collecting part, a second collecting part, a winnowing part and a magnetic separation part, the feeding part is used for inputting sorting samples, and the sorting samples fall from the discharging end of the feeding part to form a falling path; at least part of the second collecting piece is located on the falling path, the first collecting piece is located on one side of the falling path, and the second collecting piece is arranged below the first collecting piece in the vertical direction; the winnowing piece is arranged on one side, deviating from the first collecting piece, of the falling path, and is used for blowing light sand minerals in the sorted samples into the first collecting piece; and the magnetic separation piece is arranged below the second collection piece and is used for adsorbing magnetic minerals in the separated samples into the second collection piece through the magnetic force of the magnetic separation piece.

The invention relates to the technical field of tailing recovery, and discloses a down-flow groove body drum type tailing recovery machine which comprises a rack, a motor, a permanent magnetic drum, a groove body, a flow guide plate and an output port and is used for separating and screening magnetic minerals in tailing slurry, and a balance compensation module comprises a pair of calibration plates and two pairs of floating ball rods. Every two floating ball rods are slidably connected to the middles of the two ends of the calibration plate, a displacement power source in the vertical direction is provided for the floating ball rods by means of liquid level buoyancy of tailing slurry capacity change in the rack, vertical cylinders are fixedly connected to the positions, located on the outer walls of the floating ball rods, of the two sides of the top of the calibration plate, and the outer walls of the floating ball rods are slidably connected to the inner walls of the vertical cylinders. Liquid level fluctuation interference is reduced, and the displacement stability of the floating ball rod in the vertical direction is guaranteed; through fluctuation change of the separation liquid level, the lifting partition plate reversely moves along with the change of the separation liquid level, the liquid level height of the ore pulp separation area is adjusted, the separation contact range between the permanent magnetic roller and ore pulp is dynamically matched, and it is guaranteed that magnetic mineral separation and screening are sufficient and stable.

The invention relates to the technical field of metallurgical solid waste resource utilization, in particular to a method for enriching iron in vanadium extraction tailings and spiral separation equipment, and the method comprises the following steps: pretreatment, crushing and screening: feeding the vanadium extraction tailings into a jaw crusher for coarse crushing until the particle size is less than or equal to 50mm; the particle size of a crushed product is controlled to be smaller than or equal to 10 mm, the fine crushed product is screened through a linear vibrating screen, the size of a screen hole is 2 mm, oversize products return to the impact crusher to be crushed again, undersize products enter the next step, large gangue and impurities in the tailings can be removed in the step, and energy consumption is reduced for follow-up ore grinding operation. The combined technological process of pretreatment, magnetic separation roughing, spiral gravity separation and magnetic separation concentration is adopted, strong magnetic minerals are rapidly recovered through magnetic separation, then spiral gravity separation is adopted for weak magnetic and intergrowth minerals, the advantages of different separation technologies are fully played, and the problem that the recovery rate of the weak magnetic minerals such as hematite is low through a single magnetic separation method is solved.

The invention discloses a method for extracting and detecting magnetic minerals in surface sediments in a floating rice planting area, which comprises the following steps: S1, collecting the surface sediments in the floating rice planting area, and fully dispersing surface sediment samples on paper; s2, wrapping a super-strong magnet with a plastic film, and suspending the super-strong magnet above the sediment sample for repeated adsorption; s3, the adsorbed particles are placed in clear water again, magnetic separation is repeatedly conducted for four to six times, and further purification is conducted to obtain magnetic minerals; s4, carrying out pretreatment on the obtained magnetic mineral sample, and carrying out iron and oxygen element identification on the magnetic mineral by utilizing a scanning electron microscope and an energy spectrum analyzer; s5, identifying ferrite magnetic minerals in the surface sediment by using X-ray diffraction; and S6, drawing a low-temperature chi-T curve, a high-temperature chi-T curve and a hysteresis loop to determine the type of the ferrite magnetic minerals. The magnetic minerals such as Fe3O4 and Fe2O3 in the surface sediments in the floating rice planting area can be simply, conveniently, quickly, efficiently and accurately extracted and detected.

The utility model belongs to the technical field of ore magnetic separation, and particularly relates to a dry magnetic separator for garnet tailings, which comprises a conveyor, side supports are fixedly connected to two sides of a conveyor frame respectively, a plurality of openings are formed in the surfaces of the side supports, magnetic separation assemblies are mounted in the openings, and the magnetic separation assemblies are fixedly connected with the conveyor frame. The magnetic separation assembly comprises a first rotating disc and a second rotating disc which are symmetrically distributed in the conveying direction of the conveyor, the first rotating disc and the second rotating disc are rotationally connected with the two openings correspondingly, and two magnetic separation cylinders are arranged on the opposite sides of the first rotating disc and the second rotating disc from top to bottom in a penetrating mode correspondingly; the magnetic ore grains in the mineral aggregate are adsorbed through rotation of the adsorption barrels, and the adsorption barrels are switched when more magnetic ore grains are adsorbed on the surfaces of the adsorption barrels, so that the magnetic ore grains adsorbed on the surfaces of the adsorption barrels can be cleaned in a non-stop state.

The application discloses a beneficiation method of low-grade tin ore by using magnetic separation and flotation. The beneficiation method of low-grade tin ore by using magnetic separation and flotation comprises the following steps: step (1), crushing and grinding the low-grade tin ore, using water as a leaching agent, and separating by a wet magnetic separator to obtain magnetic minerals and magnetic tailings; step (2), drying the magnetic tailings after the magnetic separation, and then placing the tailings in a flotation agent to perform a flotation treatment to obtain flotation minerals and flotation tailings; step (3), concentrating the flotation tailings after the flotation treatment to obtain concentrated tailings; and step (4), smelting the concentrated tailings to finally obtain tin metal, sulfide, silicate, oxide and impurities. The application combines the magnetic separation and the flotation to improve the ore separation efficiency and the recovery rate, the water is used as a leaching liquid in the magnetic separation process to reduce the cost, and no new impurities are introduced, and the flotation agent can reduce the surface tension of the tin ore to improve the leaching rate.