A comprehensive beneficiation system for tungsten-containing polymetallic ores

Abstract

The present invention belongs to the technical field of polymetallic ore dressing, and specifically relates to a comprehensive tungsten-containing polymetallic ore dressing system. The system comprises a crusher, a grinding mill, a magnetic separator, a first mixer, a sulfide ore flotation unit, a second mixer, a scheelite-fluorite co-flotation unit, a first centrifuge unit, a fluorite concentrate tank, and a scheelite concentrate tank. The system sequentially crushes, grinds, removes magnets, removes weakly magnetic ore, flots sulfide ore, flots scheelite-fluorite, and re-separates scheelite-fluorite to produce high-grade concentrates of magnetite, wolframite, sulfide ore, fluorite, and scheelite, achieving comprehensive resource recovery.

Description

Technical Field

[0001] The present invention belongs to the technical field of polymetallic ore dressing, and in particular relates to a comprehensive ore dressing system for tungsten-containing polymetallic ores. Background Art

[0002] my country boasts abundant reserves of scheelite and a favorable mineralization environment, making it a superior mineral resource. However, due to the prevalence of poor ores and the scarcity of rich ores, as well as the complex composition of some deposits, scheelite is brittle and easily over-crushed, and is mostly embedded in fine particles. Gangue minerals are typically calcium-containing minerals with similar floatability to scheelite. These minerals coexist closely with tungsten minerals, making their separation difficult. With the large-scale mining of scheelite, the problems of "poor, fine, and mixed" scheelite resources have become increasingly prominent. Furthermore, scheelite deposits are associated with a variety of useful minerals, primarily tin, molybdenum, bismuth, copper, lead, and zinc; followed by sulfur, lithium, niobium, tantalum, and fluorite. Comprehensively recovering these beneficial components is not only a key approach to the rational development and utilization of mineral resources, but also a key way to improve the economic benefits of mining.

[0003] A search revealed that CN108906312A, which utilizes flotation, magnetic separation, and gravity separation to recover a variety of minerals, is unable to effectively recover tungsten ore. This is because polymetallic tungsten ore containing 0.4-0.58% tungsten ore, 34.72-62.83% scheelite, and 36.59-64.88% tungsten is acidic. This is caused by the oxidation of sulfide minerals in the raw ore to form sulfates and sulfites. The higher the degree of oxidation, the lower the pH. Another example is CN113369005A, which utilizes flotation, magnetic separation, and gravity separation. If flotation is performed first and then magnetic separation is performed, drug residues in the selected minerals can corrode the magnetic separation equipment. Furthermore, oxidation of the raw ore causes surface deformation of the scheelite, resulting in insufficient purity in the selected fluorite and scheelite concentrates.

[0004] Therefore, it is of great significance to develop a mineral processing system that can comprehensively recover tungsten resources and associated elements. Summary of the Invention

[0005] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0006] A comprehensive beneficiation system for tungsten-containing polymetallic ores, comprising:

[0007] Crusher, the crusher crushes the raw ore;

[0008] The grinding machine is connected to the crusher and grinds the crushed material to obtain the ore to be separated, wherein the particle size of -74μm accounts for 80%-95% of the weight;

[0009] The magnetic separator unit includes a weak magnetic rougher, a weak magnetic concentrator and a strong magnetic separator. The weak magnetic rougher is provided with a weak magnetic rougher concentrate outlet and a weak magnetic rougher tailings outlet. The weak magnetic rougher concentrate outlet is connected to the weak magnetic concentrator. The weak magnetic rougher tailings outlet is connected to the strong magnetic separator. The weak magnetic concentrator is provided with a weak magnetic rougher concentrate outlet and a weak magnetic concentrator tailings outlet. The weak magnetic concentrator tailings outlet is connected to the strong magnetic separator. The strong magnetic separator is provided with a weak magnetic separation ore outlet and a weak magnetic separation tailings outlet.

[0010] A mixer, comprising a mixing box and a mixing head located in the mixing box. The mixing box is provided with an ore feeding pipe, an ore discharging pipe, and a plurality of reagent pipes. The mixing head mixes the reagent and the ore slurry in the mixing box. The ore feeding pipe is connected to the tailings outlet of the weak magnetic separation.

[0011] A sulfide ore full flotation unit comprises a full flotation rougher, a full flotation cleaner, a full flotation fine sweeper, a full flotation sweeper, and a sulfide ore concentrate trough. The full flotation rougher is connected to an ore outlet. The full flotation rougher is provided with a full flotation rougher concentrate outlet and a full flotation rougher tailings outlet. The full flotation rougher concentrate outlet is connected to the full flotation cleaner. The full flotation cleaner is provided with a full flotation concentrate outlet and a full flotation concentrate tailings outlet. The full flotation concentrate outlet is connected to the sulfide ore concentrate trough. The full flotation concentrate tailings outlet is connected to the full flotation fine sweeper. The full flotation fine sweeper is provided with a full flotation fine sweeper concentrate outlet and a full flotation fine sweeper tailings outlet. The full flotation fine sweeper concentrate outlet is connected to the sulfide ore concentrate trough. The full flotation sweeper is connected to the full flotation rougher tailings outlet. The full flotation sweeper is provided with a full flotation fine sweeper concentrate outlet and a full flotation fine sweeper tailings outlet. The full flotation fine sweeper concentrate outlet is connected to the sulfide ore concentrate trough. The full flotation sweeper is connected to the full flotation rougher tailings outlet. The full flotation sweeper is provided with a full flotation sweeper concentrate outlet and a full flotation sweeper tailings outlet. The full flotation sweeper concentrate outlet is connected to the full flotation cleaner.

[0012] Mixer 2, which includes a mixing box 2 and a mixing head 2 located inside the mixing box 2. A feed pipe 2, an ore discharge pipe 2, and multiple reagent pipes 2 are installed on the mixing box 2. The mixing head 2 mixes the reagents and slurry inside the mixing box 2. The feed pipe 2 is connected to the full flotation sweeping tailings outlet and the full flotation fine sweeping tailings outlet;

[0013] The scheelite-fluorite co-floatation unit includes a co-floatation rougher, a concentrator 1 and a concentrator 2. The co-floatation rougher is connected to the ore outlet pipe 2. The co-floatation rougher is provided with a co-floatation rougher concentrate outlet and a co-floatation rougher tailings outlet. The co-floatation rougher concentrate outlet is connected to the concentrator 1. The concentrator 1 is provided with a concentrating I concentrate outlet and a concentrating I tailings outlet. The concentrating I concentrate outlet is connected to the concentrator 2. The concentrator 2 is provided with a concentrating II concentrate outlet and a concentrating II tailings outlet. The concentrating II concentrate outlet is connected to the centrifuge unit.

[0014] Centrifuge unit 1, the centrifuge unit 1 includes a plurality of centrifuges 1 arranged in series;

[0015] Fluorspar concentrate tank, which is connected to the tailings outlet of the first centrifuge;

[0016] The scheelite concentrate trough, the fluorite concentrate trough and the concentrate outlet of the last centrifuge are connected.

[0017] Preferably, the mineral processing system further includes a centrifuge group 2, a scheelite concentrate trough and a scheelite centrifugal middling trough. The centrifuge group 2 includes multiple centrifuges 2 arranged in series, the first centrifuge 2 is connected to the weak magnetic separation ore outlet, the scheelite concentrate trough is connected to the concentrate outlet of the last centrifuge 2, and the scheelite centrifugal middling trough is connected to the tailings outlet of each centrifuge 2.

[0018] Preferably, the crusher includes a crushing box and a crushing tooth roller arranged in the crushing box, a plurality of crushing tooth blocks are circumferentially installed on the crushing tooth roller, four pressure-bearing shafts are circumferentially arranged on the outer side of the crushing tooth roller, an adaptation groove is provided on the side of the crushing tooth block opposite to the crushing tooth roller, the adaptation groove and the pressure-bearing shaft are installed with a clearance fit, wherein the thickness of the pressure-bearing shaft is 3-8 mm and the cross-section is rectangular.

[0019] Preferably, a sink is provided in the middle of the side of the crushing tooth block opposite to the crushing tooth roller, a fixed block is installed in the sink, a blind hole is provided on the side of the fixed block opposite to the crushing tooth block, a magnetic moving block is slidably fitted in the blind hole, a fine hole is provided at the root of the blind hole, a connecting main rope is installed in the fine hole, and the connecting main rope is connected to the magnetic moving block;

[0020] The fixed block is integrally provided with a connector on the side facing away from the tooth-breaking block, and a fine hole passes through the connector. At least two groups of symmetrically distributed vertical holes are provided on the side of the connector and communicate with the fine holes. A connecting auxiliary rope connected to the connecting main rope is installed in the vertical holes. An external expansion hole is provided at the end of the vertical hole away from the fine hole. A limit pin and a spring located on the side of the limit pin close to the fine hole are slidably fitted in the external expansion hole. The connecting auxiliary rope passes through the spring and is connected to the limit pin. The end of the limit pin away from the spring is partially exposed on the outside of the connector;

[0021] The pressure-bearing shaft is provided with a socket slot corresponding to the position of the fixed block, and the side of the socket slot is provided with a track groove that slides with the limit pin. The track groove includes a deep groove at the end and a shallow groove at the socket slot slot and connected to the deep groove.

[0022] Preferably, the tooth-breaking block is divided into a tooth-breaking block 1 and a tooth-breaking block 2, two tooth-breaking blocks 1 are symmetrically arranged up and down, and two tooth-breaking blocks 2 are symmetrically arranged up and down, and the sides of the tooth-breaking block 1 and the tooth-breaking block 2 are in contact with each other;

[0023] The first crushing tooth block and the second crushing tooth block are both radially installed on the outside of the crushing tooth roller.

[0024] Preferably, a vertical dovetail slot is provided on one side of the tooth breaking block, and vertical dovetail blocks are provided on two sides of the tooth breaking block. The vertical dovetail slot and the vertical dovetail blocks are installed in a vertical socket-type adapter manner.

[0025] Preferably, the weak magnetic rougher, weak magnetic cleaner and strong magnetic separator all include a magnetic separation box, a drum is installed in the magnetic separation box, a permanent magnet group is installed horizontally offset inside the drum, the drum and the permanent magnet group are equipped with separate drives, and a maximum magnetic field area and a minimum magnetic field area are generated on the drum;

[0026] The interior of the magnetic separation box is provided with an arc-shaped magnetic separation trough, a tailings outlet is installed in the arc-shaped magnetic separation trough, and a concentrate discharge port is provided on one side of the magnetic separation box;

[0027] The side of the magnetic separation box is slidably matched with a vertical frame, a lower adjustment block and a fine-tooth top shaft. An adjustment plate is installed on the top of the vertical frame, and an upper adjustment block is installed on the bottom of the adjustment plate. The lower adjustment block is horizontally slidably mounted on the magnetic separation box, and the magnetic separation box is installed with horizontal guide rails on both sides of the lower adjustment block. A stop plate that slides with the lower adjustment block is installed on the magnetic separation box between the horizontal guide rails. A vertical slot and a horizontal slot on one side are provided on the lower adjustment block. The horizontal slot and the vertical slot are connected. One end of the fine-tooth top shaft passes through the horizontal slot and enters In the vertical groove, the lifting block slides in the vertical groove. The lifting block is provided with a lifting groove located on the body and an elastic locking block located at the bottom. The lifting groove is vertically arranged and the bottom gradually deviates from the upper adjusting block along the side close to the fine-tooth top shaft. A necking is provided at the bottom of the vertical groove, and a spring is provided at the top of the necking. The top of the spring is used to abut against the bottom of the lifting block. The elastic locking block and the stop plate are selectively adapted. A connecting pin is installed in the lifting groove, and the connecting pin is installed at the end of the fine-tooth top shaft. A push plate is installed on the fine-tooth top shaft.

[0028] Preferably, the full flotation rougher, full flotation cleaner, co-flotation rougher, cleaner one and cleaner two are all provided with a bubble scraping mechanism, which includes a bubble scraping plate, a recovery tank, a rotating shaft and a second driver. Two bubble scraping plates are symmetrically distributed on the rotating shaft, and the bubble scraping plates are connected to the second driver via the rotating shaft to clean the flotation foam into the recovery tank.

[0029] Preferably, the bubble scraping plate includes a connecting plate and a movable plate, one end of the connecting plate is fixed on the rotating shaft, and the other end of the connecting plate is socket-sliding fitted on the movable plate, the movable plate is a hollow plate, a movable bin is provided on one side of the movable plate and a limiting plate is installed on the end of the movable bin, the connecting plate is slidingly fitted in the movable bin and the maximum extension stroke is limited by the limiting plate.

[0030] Preferably, the foam scraping mechanism also includes a flushing pipe, a guide wheel and a pulling plate. The flushing pipe is used to flush the foam on the surface of the movable plate. Rotating disks are installed at both ends of the flushing pipe. The rotating disk and the guide wheel are rotatably installed on the inner side of the recovery tank. An arc groove is provided on the inner side of the slurry tank. The center of the arc groove is located on the axis of the rotating shaft. The inner side of the arc groove slides with the pulling plate. The pulling plate is connected to the rotating disk via a connecting rope and the connecting rope is wrapped around the guide wheel. The pulling plate includes a sliding body and a rotating body. The sliding body slides in the arc groove. The rotating body is rotatably installed on the sliding body and a torsion spring is installed on the rotating node. An elastic limit pin 1 is installed inside the arc groove to limit the sliding body. An elastic limit pin 2 is installed on the inner side of the slurry tank to limit the deflection angle of the rotating disk.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. This system sequentially carries out mineral crushing, grinding, magnetite removal, weak magnetic ore removal, sulfide ore full flotation, scheelite and fluorite co-floatation, and scheelite and fluorite gravity separation to obtain magnetite, wolframite, sulfide ore, fluorite, scheelite and other concentrates with high grade, realizing comprehensive resource recovery.

[0033] 2. This system uses multiple centrifugal gravity separation methods to complete the separation and selection of black tungsten and scheelite and fluorite, with high efficiency and high concentrate grade.

[0034] 3. The tooth blocks in the crusher of this system are assembled into tooth rings using a radial insertion method to prevent clogging of the original mounting holes during crushing, allowing for quick disassembly and assembly. The original disassembly and assembly method used a combination of axial dovetail and radial bolt fixation. Although the fixing force was high, replacing the center tooth block required axial removal of the remaining tooth blocks. At the same time, the surface bolt mounting holes were easily clogged during crushing, placing an additional burden on subsequent disassembly and assembly operations, and also caused bolt wear. In severe cases, the block could slip during disassembly and assembly.

[0035] 4. This system is improved for magnetic separation equipment. In order to achieve the adjustment of the distance between the arc-shaped magnetic separation tank and the drum of the slurry, the magnetic field strength can be adjusted, and then the field strength and unit processing capacity can be adjusted according to the slurry concentration and the ore materials in different mining areas. However, since the adjustment plate is installed with the drum and permanent magnet group and the corresponding driver connected through the bearing seat, the overall resistance is large. During the magnetic separation process, vibration will cause the position of the adjustment plate to deviate, resulting in a change in the field strength. Therefore, the magnetic separation device of this system is used to achieve precise control of the magnetic separation field strength.

[0036] 5. This system adjusts the flotation equipment's scraping mechanism, using flushing pipes to perform targeted cleaning operations on the front and back of the movable plate at different locations. The movable plate floats on the liquid surface and does not clean the slurry. The scrapers of conventional flotation equipment cannot achieve this. While they can adjust their positions, they cannot adaptively adjust relative to the liquid surface. Consequently, each cleaned foam is contaminated with slurry, requiring multiple flotation treatments and consuming more reagents. Furthermore, the scrapers in conventional flotation equipment are unable to promptly clean residual foam after scraping it off, causing foam to condense on the surface and the rotating shaft. The presence of fine particles in the foam affects the durability of the scrapers, and there is also the problem of condensed minerals falling back into the slurry and unable to be floated, reducing the selected grade of each ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the overall structure of the system of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the crushing tooth roller in the crushing box of the present invention;

[0039] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0040] Figure 4 For the picture Figure 3 Connection diagram of the center bearing slot and the connector;

[0041] Figure 5 It is a structural diagram of the magnetic separator unit;

[0042] Figure 6 This is the structural distribution diagram inside the magnetic separation box;

[0043] Figure 7 It is a transverse cross-sectional view inside the magnetic separation box;

[0044] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0045] Figure 9 for Figure 8 Structural diagram of the middle elastic locking block;

[0046] Figure 10 for Figure 7 A diagram showing the structural relationship between the end of the permanent magnet group away from the driver and the end of the drum close to the driver;

[0047] Figure 11 for Figure 7 A side view of the structure of the middle drum away from the drive it is equipped with;

[0048] Figure 12 This is the structural relationship diagram of mixer 1, mixer 2 and sulfide ore full floatation unit;

[0049] Figure 13 for Figure 12 Internal structure diagram of the flotation equipment;

[0050] Figure 14 for Figure 13 It is a partial schematic diagram of the scraping mechanism;

[0051] Figure 15 for Figure 14 Position relationship diagram of the bullet-hit rotating disk and the elastic limit pin 2;

[0052] Figure 16 This is a structural relationship diagram of the tooth crushing block 1 and the tooth crushing block 2;

[0053] Figure 17 The diagram shows the position relationship between the pulling plate and the arc groove;

[0054] Figure 18 This is a diagram showing the position relationship between the movable plate and the connecting plate.

[0055] In the picture:

[0056] 100. Crusher; 101. Crushing box; 102. Crushing tooth roller; 103. Crushing tooth block; 1031. Crushing tooth block 1; 10311. Vertical dovetail slot; 1032. Crushing tooth block 2; 10312. Vertical dovetail block; 104. Pressure-bearing shaft; 1041. Socket slot; 1042. Shallow slot; 1043. Deep slot; 105. Adapter slot; 106. Fixed block; 107. Magnetic movable block; 108. Connector; 1081. Connecting auxiliary rope; 1082. Limit pin; 109. Connector;

[0057] 200, grinding machine;

[0058] 300, magnetic separator; 310, weak magnetic rougher; 311, weak magnetic rougher concentrate outlet; 312, weak magnetic rougher tailings outlet; 320, weak magnetic concentrator; 321, weak magnetic rougher concentrate outlet; 322, weak magnetic concentrator tailings outlet; 330, strong magnetic separator; 331, weak magnetic concentrator ore outlet; 332, weak magnetic concentrator tailings outlet; 301, magnetic separator; 302, drum; 303, permanent magnet group; 304, arc-shaped magnetic separation tank; 3011, vertical frame; 3012, fine-tooth top shaft; 3013, adjustment plate; 3014, lower adjustment block; 3015, upper adjustment block; 3016, horizontal guide rail; 3017, stop plate; 3018, lifting block; 3019, elastic locking block; 3020, push plate;

[0059] 400, mixer one; 401, mixing box one; 402, mixing head one; 403, ore feeding pipe one; 404, ore discharging pipe one; 405, reagent pipe one;

[0060] 500, sulfide ore flotation unit; 510, flotation rougher; 511, flotation rougher concentrate outlet; 512, flotation rougher tailings outlet; 520, flotation concentrator; 521, flotation concentrator concentrate outlet; 522, flotation concentrator tailings outlet; 530, flotation sweeper; 531, flotation sweeper concentrate outlet; 532, flotation sweeper tailings outlet; 540, flotation sweeper; 541, flotation sweeper concentrate outlet; 542, flotation sweeper tailings outlet; 550, sulfide ore concentrate tank; 501, scraper Structure; 5011, scraper plate; 50111, connecting plate; 50112, movable plate; 50113, limit plate; 5012, recovery trough; 5013, rotating shaft; 5015, driving member; 5016, flushing pipe; 5017, guide wheel; 5018, pulling plate; 50181, sliding body; 50182, rotating body; 5019, rotating disk; 5020, arc trough; 5021, slurry trough; 5022, connecting rope; 5023, elastic limit pin 1; 5024, elastic limit pin 2;

[0061] 600, Mixer 2; 601, Mixing Box 2; 602, Mixing Head 2; 603, Ore Feeding Pipe 2; 604, Ore Discharging Pipe 2; 605, Reagent Pipe 2;

[0062] 700, Scheelite-Fluorite Co-float Unit; 710, Co-float Rougher; 711, Co-float Rougher Concentrate Outlet; 712, Co-float Rougher Tailings Outlet; 720, Concentrator I; 721, Concentrate I Concentrate Outlet; 722, Concentrate I Tailings Outlet; 730, Concentrator II; 731, Concentrate II Concentrate Outlet; 732, Concentrate II Tailings Outlet;

[0063] 800, centrifugal unit 1;

[0064] 900, Fluorite Concentrate Tank;

[0065] 1000, scheelite concentrate tank;

[0066] 1100, centrifugal unit 2;

[0067] 1200, wolframite concentrate tank;

[0068] 1300. Black tungsten centrifugal ore tank. DETAILED DESCRIPTION

[0069] Example 1

[0070] A comprehensive beneficiation system for tungsten-containing polymetallic ores, comprising:

[0071] Crusher 100, Crusher 100 crushes the raw ore.

[0072] The grinding machine 200 is connected to the crusher 100 and grinds the crushed material to obtain ore to be separated. The particle size of the ore to be separated is -74μm, accounting for 80%-95% of the weight.

[0073] It is then mixed into a 30% slurry and then enters the magnetic separation process.

[0074] The magnetic separator unit 300 includes a weak magnetic rougher 310, a weak magnetic concentrator 320 and a strong magnetic separator 330. The weak magnetic rougher 310 is provided with a weak magnetic rougher concentrate outlet 311 and a weak magnetic rougher tailings outlet 312. The weak magnetic rougher concentrate outlet 311 is connected to the weak magnetic concentrator 320, and the weak magnetic rougher tailings outlet 312 is connected to the strong magnetic separator 330. The weak magnetic concentrator 320 is provided with a weak magnetic rougher concentrate outlet 321 and a weak magnetic concentrating tailings outlet 322. The weak magnetic concentrating tailings outlet 322 is connected to the strong magnetic separator 330, and the strong magnetic separator 330 is provided with a weak magnetic separation ore outlet 331 and a weak magnetic separation tailings outlet 332.

[0075] Weak magnetic (4000 Gauss) roughing, weak magnetic (4000 Gauss) cleaning, and strong magnetic separation (1.0-1.3 Tesla) are carried out in sequence to select magnetite and wolframite coarse ore to obtain the ore to be flotated.

[0076] Mixer 400, mixer 400 includes a mixing box 401 and a mixing head 402 located in the mixing box 401, the mixing box 401 is equipped with a feeding pipe 403, an ore discharge pipe 404 and multiple reagent pipes 405, the mixing head 402 mixes the reagent and slurry in the mixing box 401, the feeding pipe 403 is connected to the weak magnetic separation tailings outlet 332.

[0077] After the flotation ore enters mixing tank 401, 1 kg / t of oxalic acid is added through reagent pipe 405, followed by 800 g / t of water glass (stirred for 2 minutes), 100 g / t of ethyl thiocyanate (stirred for 2 minutes), 50 g / t of xanthate (stirred for 2 minutes), and 100 g / t of BK-205 (stirred for 2 minutes) before entering the flotation process. Oxalic acid activates sulfide ore and increases its yield.

[0078] The sulfide ore full flotation unit 500 includes a full flotation rougher 510, a full flotation concentrator 520, a full flotation scavenger 530, a full flotation scavenger 540, and a sulfide ore concentrate tank 550. The full flotation rougher 510 is connected to the ore outlet pipe 404. The full flotation rougher 510 is provided with a full flotation rougher concentrate outlet 511 and a full flotation rougher tailings outlet 512. The full flotation rougher concentrate outlet 511 is connected to the full flotation concentrator 520. The full flotation concentrator 520 is provided with a full flotation concentrator concentrate outlet 521 and a full flotation concentrator tailings outlet 522. 521 is connected to the sulfide ore concentrate trough 550, the full flotation tailings outlet 522 is connected to the full flotation fine sweeper 530, the full flotation fine sweeper 530 is provided with a full flotation fine sweep concentrate outlet 531 and a full flotation fine sweep tailings outlet 532, the full flotation fine sweep concentrate outlet 531 is connected to the sulfide ore concentrate trough 550, the full flotation sweeper 540 is connected to the full flotation rougher tailings outlet 512, the full flotation sweeper 540 is provided with a full flotation sweep concentrate outlet 541 and a full flotation sweep tailings outlet 542, the full flotation sweep concentrate outlet 541 is connected to the full flotation sweeper 520.

[0079] Sulfide concentrate and flotation tailings are selected through full flotation roughing, full flotation cleaning, full flotation fine sweeping and full flotation sweeping, which can maximize the selection of sulfide ore.

[0080] Mixer 2 600, Mixer 2 600 includes a mixing box 2 601 and a mixing head 2 602 located in the mixing box 2 601, and the mixing box 2 601 is equipped with an ore feeding pipe 2 603, an ore discharging pipe 2 604 and multiple reagent pipes 2 605, and the mixing head 2 602 mixes the reagent and slurry in the mixing box 2 601, and the ore feeding pipe 2 603 is connected to the full flotation sweeping tailings outlet 542 and the full flotation fine sweeping tailings outlet 532.

[0081] The flotation tailings enter the second mixing box 601, and 4kg / t of oxalic acid, 1kg / t of water glass and 1kg of capture agent LLR are added in sequence through the second reagent pipe 605. Oxalic acid can activate sulfide ore and increase the yield of sulfide ore.

[0082] The scheelite-fluorite co-floatation unit 700 includes a co-floatation rougher 710, a concentrator 1 720 and a concentrator 2 730. The co-floatation rougher 710 is connected to the ore outlet pipe 2 604. The co-floatation rougher 710 is provided with a co-floatation rougher concentrate outlet 711 and a co-floatation rougher tailings outlet 712. The co-floatation rougher concentrate outlet 711 is connected to the concentrator 1 720. The concentrator 1 720 is provided with a concentrating I concentrate outlet 721 and a concentrating I tailings outlet 722. The concentrating I concentrate outlet 721 is connected to the concentrator 2 730. The concentrator 2 730 is provided with a concentrating II concentrate outlet 731 and a concentrating II tailings outlet 732. The concentrating II concentrate outlet 731 is connected to the centrifuge unit 1 800.

[0083] The flotation tailings enter the same flotation unit for one coarse and two fine processes to obtain scheelite-fluorite concentrate, and the tailings are directly discarded.

[0084] Centrifuge Unit 1 800, Centrifuge Unit 1 800 includes multiple centrifuges connected in series. The fluorite concentrate and scheelite concentrate are separated by four centrifugations.

[0085] The fluorite concentrate tank 900 is connected to the tailings outlet of the first centrifuge.

[0086] The scheelite concentrate tank 1000, the fluorite concentrate tank 900 and the concentrate outlet of the last centrifuge are connected.

[0087] Example 2

[0088] In the above-mentioned mineral processing system, the mineral processing system also includes a centrifuge group 2 1100, a scheelenite concentrate trough 1200 and a scheelenite centrifugal middling trough 1300. The centrifuge group 2 1100 includes multiple centrifuges 2 arranged in series, the first centrifuge 2 is connected to the weak magnetic separation ore outlet 331, the scheelenite concentrate trough 1200 is connected to the concentrate outlet of the last centrifuge 2, and the scheelenite centrifugal middling trough 1300 is connected to the tailings outlet of each centrifuge 2.

[0089] The magnetic ore separated by strong magnetic separation is centrifuged at least three times to obtain wolframite concentrate and wolframite centrifugal middlings.

[0090] Example 3

[0091] In the above-mentioned mineral processing system, the crushing teeth in the prior art will be severely worn during the crushing operation and need to be replaced in time. The existing assembly method is axial socket installation and radial bolt fixation, and there is also the problem of clogging of the installation hole and being unable to be replaced.

[0092] Therefore, targeted improvements are made to its structure: Figures 2 to 4 As shown, the crusher 100 includes a crushing box 101 and a crushing tooth roller 102 arranged in the crushing box 101, the crushing tooth roller 102 is circumferentially installed with a plurality of crushing tooth blocks 103, and four pressure-bearing shafts 104 are circumferentially arranged on the outer side of the crushing tooth roller 102. The crushing tooth block 103 is provided with an adaptation groove 105 on the side opposite to the crushing tooth roller 102, and the adaptation groove 105 and the pressure-bearing shaft 104 are installed in a clearance fit, wherein the pressure-bearing shaft 104 has a thickness of 3-8 mm and a rectangular cross-section.

[0093] The tooth-breaking block 103 is provided with a recessed groove in the middle of one side opposite to the tooth-breaking roller 102, in which a fixed block 106 is installed. The fixed block 106 is provided with a blind hole on the side opposite to the tooth-breaking block 103, in which a magnetic movable block 107 is slidably fitted. A fine hole is provided at the root of the blind hole, in which a connecting main rope 108 is installed, connecting the main rope 108 and the magnetic movable block 107.

[0094] A connector 109 is integrally provided on the side of the fixed block 106 facing away from the tooth-breaking block 103. A fine hole passes through the connector 109. At least two groups of symmetrically distributed vertical holes are provided on the side of the connector 109 and communicate with the fine holes. A connecting auxiliary rope 1081 connected to the connecting main rope 108 is installed in the vertical holes. An external expansion hole is provided at the end of the vertical hole away from the fine hole. A limit pin 1082 and a spring located on the side of the limit pin 1082 close to the fine hole are slidably fitted in the external expansion hole. The connecting auxiliary rope 1081 passes through the spring and is connected to the limit pin 1082. The end of the limit pin 1082 away from the spring is partially exposed on the outside of the connector 109.

[0095] The pressure-bearing shaft 104 is provided with a socket slot 1041 corresponding to the position of the fixed block 106, and the side of the socket slot 1041 is provided with a track groove that slides with the limit pin 1082. The track groove includes a deep groove 1043 located at the end and a shallow groove 1042 located at the slot of the socket slot 1041 and connected to the deep groove 1043.

[0096] The tooth crushing block 103 is assembled radially. During installation, an electromagnet is placed on the outside of the tooth crushing block 103 to attract and move the internal magnetic movable block 107 closer to the tooth crushing block 103. Simultaneously, the spring is compressed, and the exposed length of the limit pin 1082 corresponds to the shallow groove 1042. The radial assembly is then performed, and the limit pin 1082 on the connector 109 moves along the shallow groove 1042 until it reaches the deep groove 1043. When the electromagnet is disconnected from the power supply, the magnetic movable block 107 is reset by the spring, and the limit pin 1082 is locked in the deep groove 1043, thus securing the tooth crushing block 103. For disassembly, an electromagnet is placed on the outside of the tooth crushing block 103 and energized. The magnetic movable block 107 disengages the limit pin 1082 from the deep groove 1043, allowing the tooth crushing block 103 to be removed from the tooth crushing roller 102.

[0097] In order to reduce the load limit of the limit pin 1082 during crushing, the broken tooth block 103 is divided into a broken tooth block 1 1031 and a broken tooth block 2 1032. Two broken tooth blocks 1 1031 are symmetrically arranged in the upper and lower parts, and two broken tooth blocks 1032 are symmetrically arranged in the upper and lower parts. The sides of the broken tooth block 1 1031 and the broken tooth block 2 1032 fit together; the broken tooth block 1 1031 and the broken tooth block 2 1032 are radially installed on the outside of the crushing tooth roller 102.

[0098] like Figure 16 As shown, a vertical dovetail slot 10311 is provided on the side of the tooth-breaking block 1031, and a vertical dovetail block 10312 is provided on the side of the tooth-breaking block 2 1032. The vertical dovetail slot 10311 and the vertical dovetail block 10312 are vertically socket-fitted and installed.

[0099] The tooth block 1031 and the tooth block 1032 are vertically plugged in and the vertical dovetail slot 10311 and the vertical dovetail block 10312 are plugged in to form a tooth ring, so that the structure is an integral whole and the overall durability of the tooth plate 103 is ensured.

[0100] Example 4

[0101] In the above-mentioned mineral processing system, the existing technology has the problem that the magnetic field and unit processing capacity of magnetic separation cannot be effectively adjusted.

[0102] Therefore, targeted improvements are made to its structure: Figures 5 to 11 As shown, the weak magnetic rougher 310, the weak magnetic concentrator 320 and the strong magnetic separator 330 all include a magnetic separation box 301, a drum 302 is installed in the magnetic separation box 301, and a permanent magnetic group 303 is installed horizontally offset inside the drum 302. Figure 10 As shown, the end of the permanent magnet group 303 away from the driver is restricted in the drum 302 through three telescopic rods, and the end equipped with the driver extends to the outside of the drum 302 and is installed on the adjustment plate 3013 through a bearing. The end of the drum 302 away from the driver is provided with a support ring, and the support ring is used for the driving shaft of the end of the permanent magnet group 303 to extend out. The support ring is installed on the adjustment plate 3013 through a support roller tightly attached to the outside (as shown in FIG. Figure 11 As shown), the roller 302 and the permanent magnet group 303 are equipped with separate drivers, and a maximum magnetic field area and a minimum magnetic field area are generated on the roller 302;

[0103] The interior of the magnetic separation box 301 is provided with an arc-shaped magnetic separation tank 304, a tailings outlet is installed in the arc-shaped magnetic separation tank 304, and a concentrate discharge port is provided on one side of the magnetic separation box 301;

[0104] The side of the magnetic separation box 301 is slidably matched with a vertical frame 3011, a lower adjustment block 3014 and a fine-tooth top shaft 3012. An adjustment plate 3013 is installed on the top of the vertical frame 3011, and an upper adjustment block 3015 is installed on the bottom of the adjustment plate 3013. The upper adjustment block 3015 and the lower adjustment block 3014 correspond in position. The lower adjustment block 3014 is horizontally slidably mounted on the magnetic separation box 301 and the magnetic separation box 301 is installed with horizontal guide rails 3016 on both sides of the lower adjustment block 3014. A stop plate 3017 that slides with the lower adjustment block 3014 is installed on the magnetic separation box 301 between the horizontal guide rails 3016. The lower adjustment block 3014 is provided with a vertical slot and a horizontal slot on one side. The horizontal slot and the vertical slot are connected. The two ends of the cam 3018 are connected to each other in the horizontal groove, and one end of the fine-tooth top shaft 3012 passes through the horizontal groove and enters the vertical groove. The vertical groove slides with the lifting block 3018. The lifting block 3018 is provided with a lifting groove located at the body and an elastic locking block 3019 located at the bottom. The lifting groove is vertically arranged and the bottom gradually deviates from the upper adjustment block 3015 along the side close to the fine-tooth top shaft 3012. The bottom of the vertical groove is provided with a necking, and the top of the necking is provided with a spring. The top of the spring is used to abut against the bottom of the lifting block 3018. The elastic locking block 3019 and the stop plate 3017 are selectively adapted. A connecting pin is installed in the lifting groove, and the connecting pin is installed at the end of the fine-tooth top shaft 3012. A push plate 3020 is installed on the fine-tooth top shaft 3012. The elastic locking block 319 includes a spring body and a T-shaped block installed on the inner side of the bottom of the lifting block 3018. The top (big head) of the T-shaped block slides inside the lifting block 3018, and the small head passes through the spring body and extends to the bottom. An anti-recoil plate is installed at the end of the small head, and a one-way ratchet is provided on the opposite side of the anti-recoil plate and the stop plate 3017.

[0105] When the field strength is reduced, the lifting block 3018 is driven downward by the fine-tooth top shaft 3012 (compressing the spring at the bottom) so that the elastic locking block 3019 (the anti-recoil plate at the bottom) is adapted to the anti-recoil plate 3017. At this time, the push plate 3020 abuts against the side of the lower adjustment block 3014, and the fine-tooth top shaft 3012 can achieve precise adjustment, thereby achieving the adjustment of the magnetic field strength of the magnetic separation. The elastic locking block 3019 (the anti-recoil plate at the bottom) and the anti-recoil plate 3017 are adapted to prevent the lower adjustment block 3014 from retreating and causing the field strength to change. When the field strength is increased, the fine-tooth top shaft 3012 is operated in the reverse direction to make the elastic locking block 3019 gradually disengage from the backstop plate 3017. When all are disengaged, the lower adjustment block 3014 gradually moves horizontally away from the upper adjustment block 3015. When the set position is reached, the fine-tooth top shaft 3012 is operated in the forward direction again until the elastic locking block 3019 and the backstop plate 3017 are readjusted, and the push plate 3020 abuts against the side of the lower adjustment block 3014.

[0106] Example 5

[0107] In the aforementioned mineral processing system, the existing flotation scrapers, while capable of position adjustment, are unable to adaptively adjust relative to the liquid level. This results in the froth being mixed with slurry each time it is removed, requiring multiple flotation treatments and increasing reagent consumption. Furthermore, the scrapers in the existing flotation equipment are unable to promptly remove residual foam from the surface after scraping it, causing foam to condense on the surface and the rotating shaft. The presence of fine particles in the foam affects the durability of the scrapers, and the condensed minerals can fall back into the slurry, preventing them from being floated, thus reducing the selected grade of the ore.

[0108] Therefore, targeted improvements are made to their structures: the full flotation rougher 510, the full flotation cleaner 520, the co-flotation rougher 710, the cleaner 1 720 and the cleaner 2 730 are all provided with a bubble scraping mechanism 501, which includes a bubble scraping plate 5011, a recovery tank 5012, a rotating shaft 5013 and a driving member 5015. Two bubble scraping plates 5011 are provided, which are symmetrically distributed on the rotating shaft 5013. The bubble scraping plates 5011 are connected to the driving member 5015 via the rotating shaft 5013, and are used to clean the flotation foam into the recovery tank 5012.

[0109] The bubble scraping plate 5011 includes a connecting plate 50111 and a movable plate 50112. One end of the connecting plate 50111 is fixed on the rotating shaft 5013, and the other end of the connecting plate 50111 is slidably fitted on the movable plate 50112. The movable plate 50112 is a hollow plate. A movable bin is provided on one side of the movable plate 50112 and a limiting plate 50113 is installed on the end of the movable bin. The connecting plate 50111 is slidably fitted in the movable bin and the maximum extension stroke is limited by the limiting plate 50113.

[0110] The foam scraping mechanism 501 further includes a flushing pipe 5016, a guide wheel 5017 and a pulling plate 5018. The flushing pipe 5016 is used to flush the foam on the surface of the movable plate 50112. Rotating disks 5019 are installed at both ends of the flushing pipe 5016. The rotating disk 5019 and the guide wheel 5017 are rotatably installed on the inner side of the recovery tank 5012. An arc groove 5020 is provided on the inner side of the slurry tank 5021. The center of the arc groove 5020 is located on the axis of the rotating shaft 5013. The inner side of the arc groove 5020 slides with the pulling plate 5018. The pulling plate 5018 is connected to the connecting rope 5 022 is connected to the rotating disk 5019 and the connecting rope 5022 is wound around the guide wheel 5017. The pulling plate 5018 includes a sliding body 50181 and a rotating body 50182. The sliding body 50181 slides in the arc groove 5020. The rotating body 50182 is rotatably mounted on the sliding body 50181 and a torsion spring is installed at the rotation node. An elastic limit pin 1 5023 is installed inside the arc groove 5020 to limit the sliding body 50181. An elastic limit pin 2 5024 is installed inside the slurry tank 5021 to limit the deflection angle of the rotating disk 5019. The limit surfaces of the elastic limit pin 2 5024 and the elastic limit pin 5023 are Figure 15 In the middle thick line area, it is only necessary to overcome the resistance of the limit surface to achieve the demand of escaping the restriction, and the elastic limit pin 2 5024 and the elastic limit pin 5023 do not play a limiting role at the same time, that is, when the elastic limit pin 2 5024 is working, the elastic limit pin 5023 is not working, and when the elastic limit pin 5023 is working, the elastic limit pin 2 5024 is not working.

[0111] After the movable plate 50112 transports the bubbles into the recovery tank 5012, the flushing pipe 5016 flushes the bubble-pushing surface of the movable plate 50112. As the movable plate 50112 rotates, it contacts the flushing pipe 5016 and drives the flushing pipe 5016 to rotate relative to the slurry tank 5021 to the final position. The rotating disk 5019 is limited by the elastic limit pin 2 5024. At this time, the flushing pipe 5016 flushes the non-bubble-pushing surface of the movable plate, and the flushing water and foam enter the recovery tank 5012.

[0112] As the movable plate 50112 continues to move, the movable plate 50112 moves downward relative to the connecting plate 50111, and the exposed length of the connecting plate 50111 decreases. The movable plate 50112 will act on the rotating body 50182, and the rotating body 50182 moves to the initial position together with the movable plate 50112. When moving to the initial position, the flushing pipe 5016 returns to the initial position. At this time, the sliding body 50181 is restricted by the elastic limit pin 5023; after moving to the initial position, as the movable plate 50112 continues to rotate, the rotating body 50182 deflects relative to the sliding body 50181 and compresses the torsion spring. When the movable plate 50112 passes through the rotating body 50182, the rotating body 50182 is reset under the action of the torsion spring, thereby completing a cleaning operation.

Claims

1. A comprehensive beneficiation system for tungsten-containing polymetallic ores, characterized in that: include: Crusher (100), the crusher (100) crushes the raw ore; A grinding machine (200) is connected to a crusher (100) and performs a grinding operation on the crushed material to obtain ore to be separated; The magnetic separator (300) comprises a weak magnetic rougher (310), a weak magnetic concentrator (320) and a strong magnetic separator (330), wherein the weak magnetic rougher (310) is provided with a weak magnetic rougher concentrate outlet (311) and a weak magnetic rougher tailings outlet (312), the weak magnetic rougher concentrate outlet (311) is connected to the weak magnetic concentrator (320), the weak magnetic rougher tailings outlet (312) is connected to the strong magnetic separator (330), the weak magnetic concentrator (320) is provided with a weak magnetic rougher concentrate outlet (321) and a weak magnetic concentrator tailings outlet (322), the weak magnetic concentrator tailings outlet (322) is connected to the strong magnetic separator (330), and the strong magnetic separator (330) is provided with a weak magnetic concentrator ore outlet (331) and a weak magnetic concentrator tailings outlet (332); A mixer (400) includes a mixing box (401) and a stirring head (402) located in the mixing box (401). The mixing box (401) is equipped with an ore feeding pipe (403), an ore discharging pipe (404) and a plurality of reagent pipes (405). The stirring head (402) mixes reagents and ore pulp in the mixing box (401). The ore feeding pipe (403) is connected to the weak magnetic separation tailings outlet (332). The sulfide ore full flotation unit (500) includes a full flotation rougher (510), a full flotation concentrator (520), a full flotation scavenger (530), a full flotation scavenger (540), and a sulfide ore concentrate tank (550). The full flotation rougher (510) is connected to an ore outlet pipe (404). The full flotation rougher (510) is provided with a full flotation rougher concentrate outlet (511) and a full flotation rougher tailings outlet (512). The full flotation rougher concentrate outlet (511) is connected to the full flotation concentrator (520). The full flotation concentrator (520) is provided with a full flotation concentrator concentrate outlet (521) and a full flotation concentrator tailings outlet (522). (521) is connected to the sulfide ore concentrate tank (550), the full flotation tailings outlet (522) is connected to the full flotation fine sweeper (530), the full flotation fine sweeper (530) is provided with a full flotation fine sweep concentrate outlet (531) and a full flotation fine sweep tailings outlet (532), the full flotation fine sweep concentrate outlet (531) is connected to the sulfide ore concentrate tank (550), the full flotation sweeper (540) is connected to the full flotation rougher tailings outlet (512), the full flotation sweeper (540) is provided with a full flotation sweep concentrate outlet (541) and a full flotation sweep tailings outlet (542), the full flotation sweep concentrate outlet (541) is connected to the full flotation sweeper (520); A second mixer (600) includes a second mixing box (601) and a second stirring head (602) located in the second mixing box (601). The second mixing box (601) is equipped with a second ore feeding pipe (603), a second ore discharging pipe (604) and a plurality of second reagent pipes (605). The second stirring head (602) mixes reagents and slurry in the second mixing box (601). The second ore feeding pipe (603) is connected to the full flotation sweep tailings outlet (542) and the full flotation fine sweep tailings outlet (532). The scheelite-fluorite co-floatation unit (700) includes a co-floatation rougher (710), a concentrator 1 (720) and a concentrator 2 (730). The co-floatation rougher (710) is connected to the ore outlet pipe 2 (604). The co-floatation rougher (710) is provided with a co-floatation rougher concentrate outlet (711) and a co-floatation rougher tailings outlet (712). The co-floatation rougher concentrate outlet (711) is connected to the concentrator 1 (720). The concentrator 1 (720) is provided with a concentrating I concentrate outlet (721) and a concentrating I tailings outlet (722). The concentrating I concentrate outlet (721) is connected to the concentrator 2 (730). The concentrator 2 (730) is provided with a concentrating II concentrate outlet (731) and a concentrating II tailings outlet (732). The concentrating II concentrate outlet (731) is connected to the centrifuge unit 1 (800). Centrifuge unit one (800), the centrifuge unit one (800) includes a plurality of centrifuges one arranged in series; A fluorite concentrate tank (900), the fluorite concentrate tank (900) is connected to the tailings outlet of the first centrifuge; The scheelite concentrate trough (1000), the fluorite concentrate trough (900) and the concentrate outlet of the last centrifuge are connected.

2. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 1, characterized in that: The mineral processing system further includes a centrifuge group 2 (1100), a scheelite concentrate trough (1200) and a scheelite centrifugal middling trough (1300). The centrifuge group 2 (1100) includes a plurality of centrifuges 2 arranged in series, the first centrifuge 2 is connected to the weak magnetic separation ore outlet (331), the scheelite concentrate trough (1200) is connected to the concentrate outlet of the last centrifuge 2, and the scheelite centrifugal middling trough (1300) is connected to the tailings outlet of each centrifuge 2.

3. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 1, characterized in that: The crusher (100) comprises a crushing box (101) and a crushing tooth roller (102) arranged in the crushing box (101); a plurality of crushing tooth blocks (103) are circumferentially installed on the crushing tooth roller (102); four pressure-bearing shafts (104) are circumferentially arranged on the outer side of the crushing tooth roller (102); an adapting groove (105) is provided on the side of the crushing tooth block (103) opposite to the crushing tooth roller (102); the adapting groove (105) and the pressure-bearing shaft (104) are installed in a clearance fit; wherein the pressure-bearing shaft (104) has a thickness of 3-8 mm and a rectangular cross-section.

4. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 3, characterized in that: A recessed groove is provided in the middle of one side of the crushing tooth block (103) opposite to the crushing tooth roller (102), a fixed block (106) is installed in the recessed groove, a blind hole is provided on the side of the fixed block (106) opposite to the crushing tooth block (103), a magnetic moving block (107) is slidably fitted in the blind hole, a fine hole is provided at the root of the blind hole, a connecting main rope (108) is installed in the fine hole, and the connecting main rope (108) and the magnetic moving block (107) are connected; The fixed block (106) is provided with a connector (109) on one side facing away from the tooth-breaking block (103), and a fine hole passes through the connector (109). The side of the connector (109) is provided with at least two groups of symmetrically distributed vertical holes and communicate with the fine holes. A connecting auxiliary rope (1081) connected to the connecting main rope (108) is installed in the vertical hole. An external expansion hole is provided at one end of the vertical hole away from the fine hole. A limit pin (1082) and a spring located on the side of the limit pin (1082) close to the fine hole are slidably fitted in the external expansion hole. The connecting auxiliary rope (1081) passes through the spring and is connected to the limit pin (1082). The end of the limit pin (1082) away from the spring is partially exposed on the outside of the connector (109). The pressure-bearing shaft (104) is provided with a socket (1041) corresponding to the position of the fixed block (106); the side of the socket (1041) is provided with a track groove that slides with the limit pin (1082); the track groove includes a deep groove (1043) located at the end and a shallow groove (1042) located at the notch of the socket (1041) and connected to the deep groove (1043).

5. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 4, characterized in that: The tooth-breaking block (103) is divided into a tooth-breaking block 1 (1031) and a tooth-breaking block 2 (1032). Two tooth-breaking blocks 1 (1031) are symmetrically arranged on the upper and lower sides, and two tooth-breaking blocks 2 (1032) are symmetrically arranged on the upper and lower sides. The sides of the tooth-breaking block 1 (1031) and the tooth-breaking block 2 (1032) are in contact with each other. The first crushing tooth block (1031) and the second crushing tooth block (1032) are both radially mounted on the outside of the crushing tooth roller (102).

6. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 5, characterized in that: The side of the tooth-breaking block 1 (1031) is provided with a vertical dovetail slot (10311), and the side of the tooth-breaking block 2 (1032) is provided with a vertical dovetail block (10312). The vertical dovetail slot (10311) and the vertical dovetail block (10312) are vertically socket-fitted and installed.

7. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to any one of claims 1 to 6, characterized in that: The weak magnetic rougher (310), the weak magnetic concentrator (320) and the strong magnetic separator (330) all include a magnetic separation box (301), a drum (302) is installed in the magnetic separation box (301), a permanent magnetic group (303) is installed horizontally offset inside the drum (302), and the drum (302) and the permanent magnetic group (303) are both equipped with separate drivers, and a maximum magnetic field area and a minimum magnetic field area are generated on the drum (302); The magnetic separation box (301) is provided with an arc-shaped magnetic separation tank (304) inside, a tailings outlet is installed in the arc-shaped magnetic separation tank (304), and a concentrate discharge port is provided on one side of the magnetic separation box (301); The side of the magnetic separation box (301) is slidably matched with a vertical frame (3011), a lower adjustment block (3014) and a fine-tooth top shaft (3012); an adjustment plate (3013) is installed on the top of the vertical frame (3011); an upper adjustment block (3015) is installed on the bottom of the adjustment plate (3013); the upper adjustment block (3015) and the lower adjustment block (3014) are positioned correspondingly; the lower adjustment block (3014) is horizontally slidably mounted on the magnetic separation box (301) and the magnetic separation box (301) is equipped with horizontal guide rails (3016) located on both sides of the lower adjustment block (3014); a stop plate (3017) slidably matched with the lower adjustment block (3014) is installed on the magnetic separation box (301) between the horizontal guide rails (3016); the lower adjustment block (3014) is provided with a vertical groove and a water stopper located on one side. The flat groove, the horizontal groove and the vertical groove are connected. One end of the fine-tooth top shaft (3012) passes through the horizontal groove and enters the vertical groove. The vertical groove slides with the lifting block (3018). The lifting block (3018) is provided with a lifting groove located at the body and an elastic locking block (3019) located at the bottom. The lifting groove is vertically arranged and the bottom gradually deviates from the upper adjustment block (3015) along the side close to the fine-tooth top shaft (3012). The bottom of the vertical groove is provided with a shrinkage, and the top of the shrinkage is provided with a spring. The top of the spring is used to abut against the bottom of the lifting block (3018). The elastic locking block (3019) and the stop plate (3017) are selectively adapted. A connecting pin is installed in the lifting groove, and the connecting pin is installed at the end of the fine-tooth top shaft (3012). A push plate (3020) is installed on the fine-tooth top shaft (3012).

8. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 7, characterized in that: The full flotation rougher (510), the full flotation cleaner (520), the co-flotation rougher (710), the cleaner 1 (720) and the cleaner 2 (730) are all provided with a bubble scraping mechanism (501). The bubble scraping mechanism (501) comprises a bubble scraping plate (5011), a recovery tank (5012), a rotating shaft (5013) and a driving member (5015). Two bubble scraping plates (5011) are symmetrically distributed on the rotating shaft (5013). The bubble scraping plates (5011) are connected to the driving member (5015) via the rotating shaft (5013) and are used to clean the flotation foam into the recovery tank (5012).

9. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 8, characterized in that: The bubble scraping plate (5011) comprises a connecting plate (50111) and a movable plate (50112), one end of the connecting plate (50111) is fixed on the rotating shaft (5013), and the other end of the connecting plate (50111) is slidably engaged with the movable plate (50112) in a socket-type manner. The movable plate (50112) is a hollow plate, and a movable bin is provided on one side of the movable plate (50112), and a limiting plate (50113) is installed at the end of the movable bin. The connecting plate (50111) is slidably engaged in the movable bin and the maximum extension stroke is limited by the limiting plate (50113).

10. A comprehensive beneficiation system for tungsten-containing polymetallic ores according to claim 9, characterized in that: The foam scraping mechanism (501) further comprises a flushing pipe (5016), a guide wheel (5017) and a pulling plate (5018). The flushing pipe (5016) is used to flush foam on the surface of the movable plate (50112). Rotating discs (5019) are installed at both ends of the flushing pipe (5016). The rotating disc (5019) and the guide wheel (5017) are rotatably installed on the inner side of the recovery tank (5012). An arc groove (5020) is provided on the inner side of the slurry tank (5021). The center of the arc groove (5020) is located on the axis of the rotating shaft (5013). The interior of the arc groove (5020) is slidably matched with the pulling plate (5018). The pulling plate (5018) is connected to the recovery tank (5012) by a connecting rope. (5022) is connected to the rotating disk (5019) and the connecting rope (5022) is wound around the guide wheel (5017). The pulling plate (5018) includes a sliding body (50181) and a rotating body (50182). The sliding body (50181) is slidably fitted in the arc groove (5020). The rotating body (50182) is rotatably mounted on the sliding body (50181) and a torsion spring is installed on the rotating node. An elastic limit pin 1 (5023) is installed inside the arc groove (5020) for limiting the sliding body (50181). An elastic limit pin 2 (5024) is installed on the inner side of the slurry tank (5021) for limiting the deflection angle of the rotating disk (5019).

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