Tungsten-containing polymetallic ore comprehensive beneficiation system

Abstract

The invention belongs to the technical field of multi-metal ore dressing, and particularly relates to a tungsten-containing multi-metal ore comprehensive ore dressing system. The system is provided with a crusher, an ore grinding machine, a magnetic separation unit, a stirrer I, a sulphide ore full-floating unit, a stirrer II, a scheelite-fluorite co-floating unit, a centrifugal unit I, a fluorite concentrate tank and a scheelite concentrate tank, and mineral crushing, ore grinding, magnet removal, weakly magnetic ore removal, sulphide ore full-floating, scheelite fluorite co-floating and scheelite fluorite gravity separation are carried out in sequence. And concentrate such as magnetite, wolframite, sulphide ore, fluorite and scheelite is obtained, the concentrate grade is high, and comprehensive recovery of resources is achieved.

Description

Technical Field

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

[0002] my country has rich reserves of scheelite resources and a good mineralization environment, which is a superior mineral resource. However, due to the fact that there are more poor ores and fewer rich ores, and some deposits have complex compositions, and scheelite is brittle and easy to be over-crushed, and most of the embedded particles are fine, the gangue minerals are usually calcium-containing minerals with similar floatability to scheelite, these minerals have a close symbiotic relationship with tungsten minerals and are difficult to separate. With the large-scale mining of scheelite, the problem of "poor, fine and mixed" scheelite resources has become increasingly prominent. At the same time, scheelite deposits are associated with a variety of useful minerals, mainly tin, molybdenum, bismuth, copper, lead, zinc, etc.; followed by sulfur, lithium, niobium, tantalum, fluorite, etc. Comprehensive recovery of these beneficial components is not only a reasonable development and utilization of mineral resources, but also an important way to improve the economic benefits of mining.

[0003] After searching, it was found that CN108906312A uses flotation, magnetic separation-gravity separation and other processes to achieve the recovery of various minerals, but it is unable to achieve effective recovery for tungsten ore. The reason is that when it contains 0.4-0.58% tungsten ore, 34.72-62.83% scheelite, and 36.59-64.88% polymetallic tungsten ore, it is acidic. Due to the oxidation of sulfide ore in the original ore to form sulfates and sulfites, the higher the oxidation degree, the lower the pH value. For example, CN113369005A uses flotation, magnetic separation, and flotation processes. If it is first subjected to flotation and then magnetic separation, the drug residues in the selected minerals will corrode the magnetic separation equipment. At the same time, due to the oxidation of the original ore, the surface of the scheelite is deformed, resulting in the problem of insufficient purity of the selected fluorite and scheelite concentrate.

[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 obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0006] A comprehensive ore dressing 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 selected, wherein the particle size of -74μm accounts for 80%-95% of the weight;

[0009] A magnetic separator unit, 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, and the strong magnetic separator is provided with a weak magnetic concentrator ore outlet and a weak magnetic concentrator tailings outlet;

[0010] A mixer, comprising a mixing box and a mixing head located in the mixing box, a feeding pipe, an ore discharging pipe and a plurality of reagent pipes are installed on the mixing box, the mixing head mixes the reagent and the ore pulp in the mixing box, and the feeding pipe is connected to the outlet of the weak magnetic separation tailings;

[0011] A sulfide ore full flotation unit, comprising a full flotation rougher, a full flotation cleaner, a full flotation fine sweeper, a full flotation sweeper, and a sulfide ore concentrate tank. 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 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 tank. 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 tank. The full flotation sweeper is connected to the full flotation rougher tailings outlet. The full flotation sweeper concentrate outlet and the full flotation fine sweeper tailings outlet are provided on the full flotation sweeper. The full flotation fine sweeper concentrate outlet is connected to the sulfide ore concentrate tank. The full flotation sweeper is connected to the full flotation rougher tailings outlet. The full flotation sweeper concentrate outlet and the full flotation sweeper tailings outlet are provided on the full flotation sweeper. The full flotation sweeper concentrate outlet is connected to the full flotation sweeper concentrate outlet.

[0012] Agitator 2, which includes a mixing box 2 and a mixing head 2 located in the mixing box 2, on which a feeding pipe 2, an ore discharging pipe 2 and a plurality of reagent pipes 2 are installed, and the mixing head 2 mixes reagents and ore slurry in the mixing box 2, and the feeding pipe 2 is connected to a full flotation sweeping tailings outlet and a full flotation fine sweeping tailings outlet;

[0013] The scheelite-fluorite co-floating unit comprises a co-floating rougher, a concentrator 1 and a concentrator 2, the co-floating rougher is connected to an outlet pipe 2, the co-floating rougher is provided with a co-floating rougher concentrate outlet and a co-floating rougher tailings outlet, the co-floating 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, and the concentrating II concentrate outlet is connected to a centrifuge unit;

[0014] A centrifuge unit 1, wherein the centrifuge unit 1 comprises a plurality of centrifuges 1 arranged in series;

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

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

[0017] Preferably, the mineral processing system also includes a centrifuge unit 2, a scheelite concentrate trough and a scheelite centrifugal middling trough. The centrifuge unit 2 includes a plurality of 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 shaft strips are circumferentially arranged on the outer side of the crushing tooth roller, an adapting groove is arranged on the side of the crushing tooth block opposite to the crushing tooth roller, the adapting groove and the pressure-bearing shaft strip are installed with clearance fit, wherein the thickness of the pressure-bearing shaft strip is 3-8 mm and the cross-section is rectangular.

[0019] Preferably, a sink groove is provided in the middle of one side of the crushing tooth block relative to the crushing tooth roller, a fixed block is installed in the sink groove, a blind hole is provided on one side of the fixed block relative to the crushing tooth block, a magnetic moving block is slidably matched 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] A connector is integrally provided on the side of the fixed block facing away from the tooth-breaking block, and a fine hole penetrates the connector. At least two groups of symmetrically distributed vertical holes are arranged on the side of the connector and communicate with the fine hole. A connecting auxiliary rope connected to the connecting main rope is installed in the vertical hole. An external expansion hole is arranged at one 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 matched in the external expansion hole. The connecting auxiliary rope penetrates 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 corresponding to the position of the fixed block, and the side of the socket 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 groove 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 outer side 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-fitting 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 magnetic group is installed horizontally offset inside the drum, the drum and the permanent magnetic group are equipped with separate drivers, and a maximum magnetic field area and a minimum magnetic field area are generated on the drum;

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

[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 installed on the magnetic separation box, and horizontal guide rails on both sides of the lower adjustment block are installed on the magnetic separation box. A stop plate that slides with the lower adjustment block is installed on the magnetic separation box between the horizontal guide rails. A vertical groove and a horizontal groove on one side are provided on the lower adjustment block. The horizontal groove and the vertical groove are connected. One end of the fine-tooth top shaft passes through the horizontal groove and enters In the vertical groove, there is a lifting block sliding 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 reduction is arranged at the bottom of the vertical groove, and a spring is arranged at the top of the reduction. 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, the bubble scraping mechanism comprises a bubble scraping plate, a recovery tank, a rotating shaft and a second driver, two bubble scraping plates are provided and are symmetrically distributed on the rotating shaft, the bubble scraping plates are connected to the second driver via the rotating shaft, and are used to clean the flotation foam into the recovery tank.

[0029] Preferably, the bubble scraper 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-slidably 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 slidably 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 wound 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 crushes, grinds, removes magnetite, removes weak magnetic ore, fully floats sulfide ore, co-floats scheelite and fluorite, and re-selects scheelite and fluorite to obtain concentrates such as magnetite, wolframite, sulfide ore, fluorite, and scheelite. The concentrates are of high grade and comprehensive resource recovery is achieved.

[0033] 2. This system uses multiple centrifugal gravity separation methods to complete the selection of black tungsten and the separation and selection of 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 by radial insertion to prevent the original installation holes from being blocked during crushing, and can be quickly disassembled and assembled. The original disassembly and assembly adopted a combination of axial dovetail + bolt radial fixing. Although the fixing strength is high, the replacement of the middle tooth block requires the axial removal of the remaining tooth blocks before replacement. At the same time, the bolt installation holes on the surface are easily blocked during ore crushing, which creates an additional burden for subsequent disassembly and assembly operations, and the bolts will also wear out. In severe cases, the problem of slipping occurs during disassembly and assembly.

[0035] 4. This system is improved for magnetic separation equipment. In order to adjust 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 a drum and a permanent magnetic group and a corresponding driver connected to it through a 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 scraping part of the flotation equipment, and realizes targeted cleaning of the front and back of the movable plate at different positions through the flushing pipe. At the same time, the movable plate will float on the liquid surface and will not clean the slurry. The scraper of the original flotation equipment cannot achieve this. Although it can complete the position adjustment, it cannot make adaptive adjustments relative to the liquid surface, so that the foam cleaned each time will be mixed with slurry, resulting in the need for multiple concentration treatments in the flotation ore, consuming more reagents. At the same time, the scraper in the original flotation equipment cannot clean the residual foam on the surface in time after scraping off the foam, resulting in foam condensation on the surface and the rotating shaft. Because the foam carries fine particles, the presence of fine particles affects the durability of the scraper, and there is also a problem that the condensed minerals fall back into the slurry and cannot be floated, reducing the concentration grade of each mine. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a 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 the middle A;

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

[0041] Figure 5 It is a structural schematic diagram of a 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] Fig. 9 for Figure 8 A schematic diagram of the structure of the middle elastic locking block;

[0046] Fig.10 for Figure 7 A structural relationship diagram between the end of the permanent magnet group far from the driver equipped with it and the end of the drum close to the driver equipped with it;

[0047] Fig.11 for Figure 7 A side view of the structure of the middle drum away from the drive equipped therewith;

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

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

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

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

[0052] Fig.16 It is a structural relationship diagram of the broken tooth block 1 and the broken tooth block 2;

[0053] Fig.17 The figure is the position relationship diagram of the pulling plate and the arc groove;

[0054] Fig.18 This is a positional relationship diagram of the movable plate and the connecting plate.

[0055] In the figure:

[0056] 100, crusher; 101, crushing box; 102, crushing tooth roller; 103, crushing tooth block; 1031, crushing tooth block one; 10311, vertical dovetail slot; 1032, crushing tooth block two; 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 moving 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 magnetic group; 304, arc magnetic separator 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, a mixer; 401, a mixing box; 402, a mixing head; 403, an ore feeding pipe; 404, an ore discharging pipe; 405, a reagent pipe;

[0060] 500, sulfide ore full flotation unit; 510, full flotation rougher; 511, full flotation rougher concentrate outlet; 512, full flotation rougher tailings outlet; 520, full flotation concentrator; 521, full flotation concentrator concentrate outlet; 522, full flotation concentrator tailings outlet; 530, full flotation sweeper; 531, full flotation sweeper concentrate outlet; 532, full flotation sweeper tailings outlet; 540, full flotation sweeper; 541, full flotation sweeper concentrate outlet; 542, full 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 tank; 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 groove; 5021, slurry tank; 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 outlet pipe 2; 605, reagent pipe 2;

[0062] 700, scheelite-fluorite co-floating unit; 710, co-floating rougher; 711, co-floating rougher concentrate outlet; 712, co-floating rougher tailings outlet; 720, concentrator I; 721, concentrator I concentrate outlet; 722, concentrator I tailings outlet; 730, concentrator II; 731, concentrator II concentrate outlet; 732, concentrator 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 ore dressing 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 the 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 mixed into a 30% slurry and then enters the magnetic separation operation.

[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. 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. The strong magnetic separator 330 is provided with a weak magnetic concentrator ore outlet 331 and a weak magnetic concentrator 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 floated.

[0076] A mixer 400 includes a mixing box 401 and a mixing head 402 located in the mixing box 401. A feeding pipe 403, an ore outlet pipe 404 and multiple reagent pipes 405 are installed on the mixing box 401. The mixing head 402 mixes reagents and ore slurry in the mixing box 401. The feeding pipe 403 is connected to the weak magnetic separation tailings outlet 332.

[0077] When the flotation ore enters the mixing box 401, 1kg / t oxalic acid is added through the reagent pipe 405 and stirred for 10 minutes, 800g / t water glass is stirred for 2 minutes, 100g / t ethyl thiocyanate is stirred for 2 minutes, 50g / t xanthate is stirred for 2 minutes, and 100g / t BK-205 is stirred for 2 minutes before entering the flotation operation. Oxalic acid can activate sulfide ore and increase the yield of sulfide ore.

[0078] The sulfide ore full flotation unit 500 includes a full flotation rougher 510, a full flotation concentrator 520, a full flotation concentrator 530, a full flotation concentrator 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, and the full flotation sweep concentrate outlet 541 is connected to the full flotation sweeper 520.

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

[0080] Mixer 600, mixer 600 includes a mixing box 601 and a mixing head 602 located in the mixing box 601, a feeding pipe 603, an ore outlet pipe 604 and a plurality of reagent pipes 605 are installed on the mixing box 601, the mixing head 602 mixes the reagent and the slurry in the mixing box 601, the feeding pipe 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 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 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 roughing and two fines to obtain scheelite-fluorite concentrate, and the tailings are directly thrown.

[0084] Centrifuge Unit 800, Centrifuge Unit 800 includes multiple centrifuges arranged in series. The scheelite-fluorite concentrate is centrifuged four times to separate the fluorite concentrate and the scheelite concentrate.

[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 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.

[0089] The magnetic ore selected by strong magnetic separation is centrifuged at least three times to obtain black tungsten concentrate and black tungsten 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 fixing, and there is also the problem of clogging of the installation hole and inability to replace.

[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, four pressure-bearing shafts 104 are circumferentially arranged on the outer side of the crushing tooth roller 102, and an adapting groove 105 is arranged on the side of the crushing tooth block 103 opposite to the crushing tooth roller 102, and 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.

[0093] The broken tooth block 103 is provided with a sink groove in the middle of one side opposite to the broken tooth roller 102, a fixed block 106 is installed in the sink groove, a blind hole is provided on the side opposite to the broken tooth block 103, a magnetic moving block 107 is slidably matched 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 is connected to the magnetic moving block 107;

[0094] A connector 109 is integrally formed on the side of the fixed block 106 facing away from the tooth-breaking block 103, and a fine hole penetrates 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 hole. 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 matched in the external expansion hole. The connecting auxiliary rope 1081 penetrates 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 1041 corresponding to the position of the fixing block 106 , and the side of the socket 1041 is provided with a track groove that slidably cooperates with the limit pin 1082 , and the track groove includes a deep groove 1043 located at the end and a shallow groove 1042 located at the groove of the socket 1041 and connected to the deep groove 1043 .

[0096] By radially assembling the broken tooth block 103, during installation, an electromagnet is used to absorb the outer side of the broken tooth block 103 and move the internal magnetic moving block 107 closer to the broken tooth block 103, and at the same time the spring will be compressed, and the outer length of the limit pin 1082 will correspond to the shallow groove 1042, and radial assembly is performed, and at the same time the limit pin 1082 on the connector 109 will move along the shallow groove 1042 until the deep groove 1043, and the power supply of the electromagnet is disconnected, the magnetic moving block 107 will be reset under the action of the spring, and the limit pin 1082 will be locked in the deep groove 1043, and the fixing of the broken tooth block 103 is completed. When disassembling, an electromagnet is arranged on the outer side of the broken tooth block 103 and energized, and the magnetic moving block 107 will disengage the limit pin 1082 from the deep groove 1043, and then the broken tooth block 103 can be removed from the broken tooth 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 are in contact with each other; 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 Fig.16 As shown, a vertical dovetail slot 10311 is provided on the side of the first tooth-breaking block 1031, and a vertical dovetail block 10312 is provided on the side of the second tooth-breaking block 1032. The vertical dovetail slot 10311 and the vertical dovetail block 10312 are installed in a vertical socket-type adapter manner.

[0099] The tooth block 1031 and the tooth block 1032 are vertically plugged in and out and the vertical dovetail slot 10311 and the vertical dovetail block 10312 are plugged in and out 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 magnetic separation magnetic field and unit processing capacity in the prior art 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 finer 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, as shown in FIG. Fig.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, and the support ring is installed on the adjustment plate 3013 through a support roller close to the outside (as shown in FIG. Fig.11 As shown), the drum 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 drum 302;

[0103] The magnetic separation box 301 is provided with an arc-shaped magnetic separation tank 304 inside, a tailings port 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 to each other in position. The lower adjustment block 3014 is horizontally slidably installed on the magnetic separation box 301, and horizontal guide rails 3016 located on both sides of the lower adjustment block 3014 are installed on the magnetic separation box 301. A stop plate 3017 that slidably matches 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 horizontal groove located on one side. The horizontal groove and the vertical groove are connected to each other. The two shafts are connected to each other in the horizontal groove, one end of the fine-tooth top shaft 3012 passes through the horizontal groove and enters the vertical groove, and 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 adjusting block 3015 along the side close to the fine-tooth top shaft 3012. A reduction is arranged at the bottom of the vertical groove, and a spring is arranged at the top of the reduction. 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-retreat plate at the bottom) is adapted to the anti-retreat 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-retreat plate at the bottom) and the anti-retreat plate 3017 are adapted to prevent the lower adjustment block 3014 from retreating and causing a change in the field strength. 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 above-mentioned mineral processing system, the existing flotation scraper cannot achieve position adjustment, but cannot make adaptive adjustments relative to the liquid level, so that the foam cleaned each time will be mixed with pulp, resulting in the need for multiple concentration treatments in the flotation ore, consuming more reagents. At the same time, the scraper in the original flotation equipment cannot clean the residual foam on the surface in time after scraping the foam, causing foam condensation on the surface and the rotating shaft. Since the foam carries fine particles, the presence of fine particles affects the durability of the scraper, and there is also a problem that the condensed minerals fall back into the pulp and cannot be floated, reducing the concentration grade of each mine.

[0108] Therefore, targeted improvements are made to the structures thereof: the full flotation rougher 510, the full flotation cleaning machine 520, the same flotation rougher 710, the cleaning machine 1 720 and the cleaning machine 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, the bubble scraping plate 5011 is provided with two symmetrically distributed on the rotating shaft 5013, the bubble scraping plate 5011 is connected to the driving member 5015 via the rotating shaft 5013, and is used for cleaning the flotation foam into the recovery tank 5012.

[0109] The bubble scraper 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, the other end of the connecting plate 50111 is slidably fitted on the movable plate 50112 by socket and socket, 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 arranged 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 is slidably matched with the pulling plate 5018. The pulling plate 5018 is connected to the recovery tank 5012 by 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 is slidably matched 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 to limit the sliding body 50181. An elastic limit pin 2 5024 is installed on the inner side of 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 Fig.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 works, the elastic limit pin 5023 does not work, and when the elastic limit pin 5023 works, the elastic limit pin 2 5024 does not work.

[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 to the final position relative to the slurry tank 5021. The rotating disk 5019 is limited by the elastic limiting 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 is reduced. 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 tube 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: A crusher (100), the crusher (100) crushes the raw ore; A grinding machine (200), the grinding machine (200) is connected to the crusher (100) and performs a grinding operation on the crushed material to obtain the ore to be separated; A magnetic separator (300), the magnetic separator (300) comprising a weak magnetic rougher (310), a weak magnetic concentrator (320) and a strong magnetic separator (330), the weak magnetic rougher (310) being provided with a weak magnetic rougher concentrate outlet (311) and a weak magnetic rougher tailings outlet (312), the weak magnetic rougher concentrate outlet (311) being connected to the weak magnetic concentrator (320), the weak magnetic rougher tailings outlet (312) being connected to the strong magnetic separator (330), the weak magnetic concentrator (320) being provided with a weak magnetic rougher concentrate outlet (321) and a weak magnetic concentrator tailings outlet (322), the weak magnetic concentrator tailings outlet (322) being connected to the strong magnetic separator (330), and the strong magnetic separator (330) being provided with a weak magnetic concentrator ore outlet (331) and a weak magnetic concentrator tailings outlet (332); A mixer (400), the mixer (400) comprises a mixing box (401) and a mixing head (402) located in the mixing box (401), a feeding pipe (403), an ore outlet pipe (404) and a plurality of reagent pipes (405) are installed on the mixing box (401), the mixing head (402) mixes reagents and ore slurry in the mixing box (401), and the feeding pipe (403) is connected to the weak magnetic separation tailings outlet (332); The sulfide ore full flotation unit (500) comprises a full flotation rougher (510), a full flotation concentrator (520), a full flotation concentrator (530), a full flotation concentrator (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 sweeper concentrate outlet (531) and a full flotation fine sweeper tailings outlet (532), the full flotation fine sweeper 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 sweeper concentrate outlet (541) and a full flotation sweeper tailings outlet (542), the full flotation sweeper concentrate outlet (541) is connected to the full flotation sweeper (520); A second mixer (600), the second mixer (600) comprises a second mixing box (601) and a second mixing 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 mixing head (602) mixes reagents and ore pulp in the second mixing box (601), the second ore feeding pipe (603) is connected to a full flotation scavenging tailings outlet (542) and a full flotation fine scavenging tailings outlet (532); The scheelite-fluorite co-floatation unit (700) comprises 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), and the concentrating II concentrate outlet (731) is connected to the centrifuge unit 1 (800); A centrifuge unit 1 (800), the centrifuge unit 1 (800) comprising a plurality of centrifuges 1 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 tank (1000), the fluorite concentrate tank (900) and the concentrate outlet of the last centrifuge are connected.

2. A comprehensive ore dressing system for tungsten-containing polymetallic ores according to claim 1, characterized in that: The ore dressing system also 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 a weak magnetic separation ore outlet (331), the scheelite concentrate trough (1200) is connected to a concentrate outlet of the last centrifuge 2, and the scheelite centrifugal middling trough (1300) is connected to a tailings outlet of each centrifuge 2.

3. A comprehensive ore dressing 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 shaft strips (104) are circumferentially installed on the outer side of the crushing tooth roller (102); an adapting groove (105) is arranged on one side of the crushing tooth block (103) opposite to the crushing tooth roller (102); the adapting groove (105) and the pressure-bearing shaft strip (104) are installed in a clearance fit; the pressure-bearing shaft strip (104) has a thickness of 3-8 mm and a rectangular cross-section.

4. A comprehensive ore dressing system for tungsten-containing polymetallic ores according to claim 3, characterized in that: A sink 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 sink, a blind hole is provided on one 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) is connected to the magnetic moving block (107); A connector (109) is integrally formed on the side of the fixed block (106) facing away from the tooth-breaking block (103), a fine hole penetrates the connector (109), at least two groups of symmetrically distributed vertical holes are arranged on the side of the connector (109) and communicate with the fine hole, a connecting auxiliary rope (1081) connected to the connecting main rope (108) is installed inside the vertical hole, an external expansion hole is arranged 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 matched in the external expansion hole, the connecting auxiliary rope (1081) penetrates the spring and is connected to the limit pin (1082), and a part of the end of the limit pin (1082) away from the spring is 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 fixing block (106); the side of the socket (1041) is provided with a track groove slidably matched 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 ore dressing 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 up and down, and two tooth-breaking blocks 2 (1032) are symmetrically arranged up and down. The sides of the tooth-breaking block 1 (1031) and the tooth-breaking block 2 (1032) are in contact with each other. The crushing tooth block 1 (1031) and the crushing tooth block 2 (1032) are both radially installed on the outside of the crushing tooth roller (102).

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

7. A comprehensive ore dressing 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 cleaner (320) and the strong magnetic separator (330) all include a magnetic separator box (301), a drum (302) is installed in the magnetic separator box (301), a permanent magnetic group (303) is installed horizontally offset inside the drum (302), 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); An arc-shaped magnetic separation tank (304) is arranged inside the magnetic separation box (301), a tailings port is installed inside the arc-shaped magnetic separation tank (304), and a concentrate discharge port is arranged 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 installed on the magnetic separation box (301); and horizontal guide rails (3016) located on both sides of the lower adjustment block (3014) are installed on the magnetic separation box (301); 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); a vertical groove and a water stopper located on one side are provided on the lower adjustment block (3014); 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, and 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 ore dressing system for tungsten-containing polymetallic ores according to claim 7, characterized in that: The full flotation rougher (510), the full flotation cleaning machine (520), the co-flotation rougher (710), the cleaning machine 1 (720) and the cleaning machine 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 provided and are symmetrically distributed on the rotating shaft (5013), and the bubble scraping plates (5011) are connected to the driving member (5015) via the rotating shaft (5013) and are used for cleaning the flotation foam into the recovery tank (5012).

9. A comprehensive ore dressing 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), the other end of the connecting plate (50111) is socket-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 at 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).

10. A comprehensive ore dressing 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 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 arranged 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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