A polymetallic tin ore dressing equipment

Abstract

The present invention discloses a multi-metal tin ore beneficiation device, comprising a fixed support, a grinding device, a beneficiation device, and a driving device, wherein the grinding device, the beneficiation device, and the driving device are all mounted on the fixed support, the beneficiation device comprising a turntable, an annular bar, a first vortex bar, a second vortex bar, a first collection box, and a second collection box, the grinding device being located in the middle of the turntable, the annular bar surrounding the grinding device, the first vortex bar being located on the side of the annular bar away from the grinding device, and the second vortex bar being located on the side of the first vortex bar away from the grinding device. The beneficial effects achieved by the present invention are as follows: by driving the turntable to rotate by a single driving device, the operation of the grinding device and the beneficiation device can be simultaneously driven, the number of driving devices can be reduced, and the advantages of low construction cost, low energy consumption, and high equipment utilization efficiency can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral processing equipment, and in particular to mineral processing equipment for polymetallic tin ore. Background Art

[0002] Tin is mainly used in the metallurgical industry to produce tinplate and various alloys, and is widely used in national defense, industrial production, cutting-edge science and technology, and daily necessities.

[0003] Chinese invention patent application publication number CN116510881A discloses a polymetallic tin placer beneficiation process employing an isoflurane-mixed flotation-gravity separation and rewatering process. During gravity separation, flotation tailings are screened to yield +0.074mm material, -0.074mm+0.038mm material, and -0.038mm material. The +0.074mm material undergoes two rounds of shaker gravity separation, the -0.074mm+0.038mm material undergoes a single round shaker gravity separation, the middlings are regrinded and then gravity separated, and the -0.038mm material undergoes gravity separation using a single suspended vibrating disc concentrator. Finally, a single round shaker gravity separation yields tin concentrate, sub-tin concentrate, and tailings. This beneficiation process recovers lead, zinc, and tin from the tin placer ore, achieving high separation performance and excellent separation efficiency.

[0004] Chinese invention patent application publication number CN118268119A discloses a gravity-type shaking table beneficiation device and a beneficiation method for zircon sand. The device comprises a bed and a recovery unit disposed on the bed. The recovery unit generates middlings during the beneficiation of raw materials, which are mixed with water and collected by the recovery unit's recovery hopper into a recovery tank to form a middling dilution solution. The recovery hopper can be adjusted to an appropriate position based on the position of the various ore layers formed on the bed, thereby collecting the generated middlings. This improves the device's applicability. After the recovery tank collects a certain amount of middling dilution solution, a feed pump automatically transports the middling dilution solution back to the bed for re-benefiting. This eliminates the need for lengthy manual oversight, significantly simplifying the middling recovery and re-selection process and improving the beneficiation efficiency of the device.

[0005] Existing mineral processing equipment needs to first grind the minerals into fine powder using grinding equipment, and then use shaking table mineral processing equipment to move minerals of different densities to different positions. In actual mineral processing operations, both types of equipment need to work for a long time, and both types of equipment require power devices to drive them separately, resulting in high construction costs, high energy consumption, and low equipment utilization efficiency. Summary of the Invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to provide a multi-metallic tin ore beneficiation equipment, which includes a fixed bracket, a grinding device, a beneficiation device and a driving device. The multi-metallic tin ore beneficiation equipment has the advantages of low construction cost, low energy consumption and high equipment utilization efficiency.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0008] A multi-metal tin ore beneficiation device includes a fixed support, a grinding device, a beneficiation device and a driving device, wherein the grinding device, the beneficiation device and the driving device are all mounted on the fixed support, the beneficiation device includes a turntable, an annular bar, a first vortex bar, a second vortex bar, a first collection box and a second collection box, the turntable is rotatably connected to the fixed support, the annular bar, the first vortex bar, the second vortex bar, the first collection box and the second collection box are all fixedly mounted on the turntable, the grinding device is located in the middle of the turntable, the annular bar surrounds the grinding device, the first vortex bar is located at a position where the annular bar is away from the grinding device On one side, the first vortex bar is in the shape of a vortex with an arc radius gradually increasing in the direction away from the grinding device, the second vortex bar is located on the side of the first vortex bar away from the grinding device, the second vortex bar is in the shape of a vortex with an arc radius gradually increasing in the direction away from the grinding device, the end of the first vortex bar away from the grinding device extends to the edge of the turntable, the first collecting box is located below the end of the first vortex bar away from the grinding device, the end of the second vortex bar away from the grinding device extends to the edge of the turntable, and the second collecting box is located below the end of the second vortex bar away from the grinding device.

[0009] Through such an arrangement: the turntable is driven to rotate by a driving device, which realizes the simultaneous driving of the grinding device and the mineral processing device, reduces the number of driving devices, and achieves the advantages of low construction cost, low energy consumption and high equipment utilization efficiency.

[0010] Preferably, a first direction is set along the circumference of the turntable, the end of the first vortex bar away from the grinding device is bent toward the first direction, the end of the second vortex bar away from the grinding device is bent toward the first direction, and the driving device drives the turntable to rotate in the first direction.

[0011] Through such setting, the accuracy of mineral processing can be guaranteed.

[0012] Preferably, the height of the first vortex strip is greater than that of the annular strip, and the height of the second vortex strip is greater than that of the first vortex strip.

[0013] Through such an arrangement, the first vortex bar and the second vortex bar are able to screen metal minerals of different densities respectively.

[0014] Preferably, the turntable is fixedly connected to an arc-shaped baffle, and the arc-shaped baffle is located on a side of the annular bar close to the first collection box and the second collection box.

[0015] Through such setting, the accuracy of mineral processing is guaranteed.

[0016] Preferably, the driving device includes a driving member, a driving gear and a driven gear, the driving member is fixedly mounted on a fixed bracket, the driving gear is fixedly connected to the output shaft of the driving member, the driven gear is fixedly connected to the turntable, and the driven gear is meshed with the driving gear.

[0017] Through such an arrangement, the function of driving the turntable to rotate on the fixed bracket is achieved through the driving device.

[0018] Preferably, the grinding device includes a support column, a support frame, a first grinding roller, a second grinding roller and a third grinding roller, the support column is fixedly mounted on a fixed bracket, the support frame is fixedly mounted on the upper end of the support column, the first grinding roller, the second grinding roller and the third grinding roller are all rotatably connected to the support frame, the first grinding roller, the second grinding roller and the third grinding roller are arranged in sequence in a direction away from the support column, the diameter of the second grinding roller is smaller than the diameter of the third grinding roller, the outer peripheral surface of the second grinding roller is fixedly connected with a second protrusion with a top flush with the outer peripheral surface of the third grinding roller, the diameter of the first grinding roller is smaller than the diameter of the second grinding roller, the outer peripheral surface of the first grinding roller is fixedly connected with a first protrusion with a top flush with the outer peripheral surface of the third grinding roller, the middle part of the upper surface of the turntable is fixedly connected with a thickening layer, and the first protrusion, the second protrusion and the third grinding roller abut against the thickening layer.

[0019] Through such an arrangement, the functions of crushing and grinding the ore are achieved through the grinding device.

[0020] Preferably, a connecting hole is provided inside the support column, a water inlet pipe connected to the connecting hole is fixedly connected to the support column, and a water outlet opening toward the upper surface of the thickening layer is provided on the side wall of the support column.

[0021] Through such an arrangement, the grinding device can realize the function of conveying finely ground ore and water to the turntable.

[0022] Preferably, the support column is fixedly connected to a scraper located above the thickening layer, a gap is provided between the scraper and the thickening layer, a scraping section is provided at the end of the scraper away from the support column, the scraping section is bent toward the first direction at the end close to the support column, the scraping section is provided with a first trough, a second trough and a third trough, the depth of the first trough is greater than the depth of the second trough, the depth of the second trough is greater than the depth of the third trough, the distance between the first trough and the support column is equal to the distance between the first grinding roller and the support column, the distance between the second trough and the support column is equal to the distance between the second grinding roller and the support column, and the distance between the third trough and the support column is equal to the distance between the third grinding roller and the support column.

[0023] Through such setting, screening of ores with different diameters is achieved.

[0024] Preferably, the scraper is provided with a pushing section at one end close to the support column, and the pushing section is bent in the first direction at one end away from the support column.

[0025] Through such an arrangement, the function of pushing the ore at the support column to move toward the first grinding roller is achieved.

[0026] Preferably, the scraper is fixedly connected to a material blocking barrel, a gap is provided between the material blocking barrel and the thickening layer, the axis of the material blocking barrel is the same as the axis of the support column, the material blocking barrel surrounds the scraper, the first grinding roller, the second grinding roller, and the third grinding roller, the material blocking barrel is fixedly connected to a support plate, and the support plate is fixedly connected to the support frame.

[0027] Through such an arrangement, the support frame provides supporting force to the material retaining barrel through the support plate, thereby improving the structural stability of the material retaining barrel and the scraper.

[0028] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0029] The water flow washes stibnite and sphalerite from the first vortex bar to the second vortex bar, where they are blocked by the second vortex bar, which is taller than the first. The vibration causes the blocked stibnite and sphalerite to roll along the extension of the second vortex bar toward the edge of the turntable, thereby transporting them to the second collection tank. The less dense quartz and calcite are directly washed to the edge of the turntable for discharge, enabling the beneficiation of multiple metal minerals. A single drive unit drives the turntable, simultaneously driving the grinding and beneficiation units. This reduces the number of drive devices and achieves the advantages of low construction costs, low energy consumption, and high equipment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1This is a schematic structural diagram of a multi-metal tin ore beneficiation device according to an embodiment of the present invention;

[0031] Figure 2 2 is a schematic structural diagram of a first vortex bar and a second vortex bar in an embodiment of the present invention;

[0032] Figure 3 1 is a schematic structural diagram of a driving device according to an embodiment of the present invention;

[0033] Figure 4 Schematic diagram of the structure of the grinding device in an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of the structure of the scraper in the embodiment of the present invention.

[0035] The technical features indicated by the reference numerals are as follows:

[0036] 11. Fixed bracket; 20. Mineral processing device; 21. Turntable; 22. Annular bar; 23. First vortex bar; 24. Second vortex bar; 25. First collecting box; 26. Second collecting box; 27. Baffle; 30. Driving device; 31. Driving member; 32. Driving gear; 33. Driven gear; 40. Grinding device; 41. Support column; 42. Support frame; 43. First grinding roller; 44. Second grinding roller; 45. Third grinding roller; 46. First protrusion; 47. Second protrusion; 48. Thickening layer; 51. Connecting hole; 52. Water inlet pipe; 53. Water nozzle; 60. Scraper; 61. Scraping section; 62. First trough; 63. Second trough; 64. Third trough; 65. Pushing section; 66. Baffle barrel; 67. Support plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the embodiments, but the scope of protection claimed in the present invention is not limited to the following specific embodiments.

[0038] refer to Figure 1-5 A multi-metal tin ore beneficiation device includes a fixed bracket 11, a grinding device 40, a beneficiation device 20 and a driving device 30, wherein the grinding device 40, the beneficiation device 20 and the driving device 30 are all installed on the fixed bracket 11.

[0039] The mineral processing device 20 includes a turntable 21, an annular strip 22, a first vortex strip 23, a second vortex strip 24, a first collection box 25 and a second collection box 26. The turntable 21 is rotatably connected to the fixed bracket 11. The annular strip 22, the first vortex strip 23, the second vortex strip 24, the first collection box 25 and the second collection box 26 are all fixedly mounted on the turntable 21. The grinding device 40 is located in the middle of the turntable 21. The annular strip 22 surrounds the first vortex strip 23. The first vortex strip 23 is located on the side of the annular strip 22 away from the grinding device 40. The first vortex strip 23 is generally in a direction away from the grinding device 40. The second vortex bar 24 is located on the side of the first vortex bar 23 away from the grinding device 40. The second vortex bar 24 is generally vortex-shaped with a gradually increasing arc radius in the direction away from the grinding device 40. The end of the first vortex bar 23 away from the grinding device 40 extends to the edge of the turntable 21. The first collection box 25 is located below the end of the first vortex bar 23 away from the grinding device 40. The end of the second vortex bar 24 away from the grinding device 40 extends to the edge of the turntable 21. The second collection box 26 is located below the end of the second vortex bar 24 away from the grinding device 40. Along the circumference of the turntable 21, which is defined as a first direction, the end of the first vortex bar 23 away from the grinding device 40 bends in the first direction. The end of the second vortex bar 24 away from the grinding device 40 bends in the first direction. The drive device 30 drives the turntable 21 to rotate in the first direction. The height of the first vortex bar 23 is greater than that of the annular bar 22, and the height of the second vortex bar 24 is greater than that of the first vortex bar 23. The turntable 21 is fixedly connected to an arc-shaped baffle 27 . The arc-shaped baffle 27 is located on one side of the annular bar 22 close to the first collection box 25 and the second collection box 26 .

[0040] The drive device 30 includes a driving member 31, a driving gear 32, and a driven gear 33. The driving member 31 is fixedly mounted on the fixed bracket 11. The driving gear 32 is fixedly connected to the output shaft of the driving member 31, and the driven gear 33 is fixedly connected to the turntable 21. The driven gear 33 meshes with the driving gear 32. The driving member 31 is a motor. When the driving member 31 is in operation, it drives the driving gear 32 to rotate. The driving gear 32 then drives the meshed driven gear 33 to rotate. The driven gear 33 then drives the turntable 21 to rotate on the fixed bracket 11. This realizes the function of the drive device 30 driving the turntable 21 to rotate on the fixed bracket 11.

[0041] The grinding device 40 includes a support column 41, a support frame 42, a first grinding roller 43, a second grinding roller 44 and a third grinding roller 45. The support column 41 is fixedly mounted on the fixed bracket 11, and the support frame 42 is fixedly mounted on the upper end of the support column 41. The first grinding roller 43, the second grinding roller 44 and the third grinding roller 45 are all rotatably connected to the support frame 42. The first grinding roller 43, the second grinding roller 44 and the third grinding roller 45 are arranged in sequence in a direction away from the support column 41. The second grinding roller 44 is arranged in a direction away from the support column 41. The diameter of the first grinding roller 43 is smaller than that of the third grinding roller 45. A second protrusion 47, whose top is flush with the outer circumference of the third grinding roller 45, is fixedly connected to the outer circumference of the second grinding roller 44. The diameter of the first grinding roller 43 is smaller than that of the second grinding roller 44. A first protrusion 46, whose top is flush with the outer circumference of the third grinding roller 45, is fixedly connected to the outer circumference of the first grinding roller 43. A thickening layer 48 is fixedly connected to the middle of the upper surface of the turntable 21. The first protrusion 46, the second protrusion 47, and the third grinding roller 45 abut against the thickening layer 48. A connecting hole 51 is provided within the support column 41. A water inlet pipe 52, which is connected to the connecting hole 51, is fixedly connected to the support column 41. A water outlet 53 is provided on the side wall of the support column 41, opening toward the upper surface of the thickening layer 48.

[0042] The support column 41 is fixedly connected to a scraper 60 located above the thickening layer 48, and a gap is provided between the scraper 60 and the thickening layer 48. The end of the scraper 60 away from the support column 41 is provided with a scraping section 61, and the end of the scraping section 61 close to the support column 41 is bent in the first direction, and the scraping section 61 is provided with a first trough 62, a second trough 63 and a third trough 64. The depth of the first trough 62 is greater than the depth of the second trough 63, and the depth of the second trough 63 is greater than the depth of the third trough 64. The distance between the first trough 62 and the support column 41 is equal to the distance between the first grinding roller 43 and the support column 41, the distance between the second trough 63 and the support column 41 is equal to the distance between the second grinding roller 44 and the support column 41, and the distance between the third trough 64 and the support column 41 is equal to the distance between the third grinding roller 45 and the support column 41. The scraper 60 is provided with a pushing section 65 at one end close to the support column 41, and the pushing section 65 is bent in the first direction at the end away from the support column 41. The scraper 60 is fixedly connected to a material blocking barrel 66. A gap is provided between the material blocking barrel 66 and the thickening layer 48. The axis of the material blocking barrel 66 is the same as the axis of the support column 41. The material blocking barrel 66 surrounds the scraper 60, the first grinding roller 43, the second grinding roller 44, and the third grinding roller 45. The material blocking barrel 66 is fixedly connected to a support plate 67, and the support plate 67 is fixedly connected to the support frame 42.

[0043] Specific working process:

[0044] The crushed ore material, which contains quartz, calcite, stibnite, sphalerite, and tin ore, is placed into the grinding device 40. The grinding device 40 grinds the ore finely, and water is supplied to the grinding device 40, discharging the water and the finely ground ore into the inner side of the annular bars 22 on the turntable 21. The water flow sweeps the finely ground ore toward the edge of the turntable 21. The ore flows over the annular bars 22 with the water flow, creating resistance to the ore's movement, dispersing the ore circumferentially around the turntable 21 and distributing it more evenly across the turntable 21. The water flow then propels the ore toward the first vortex bars 23. Since the tin ore is denser, the water flow cannot carry the denser tin ore past the first vortex bars 23, allowing the tin ore to be blocked by the first vortex bars 23. During operation, the first and second protrusions 46 and 47 of the grinding device 40 collide with the thickened layer 48, generating vibrations that, through the thickened layer 48, drive the turntable 21 to vibrate. This vibration causes the tin ore blocked by the first vortex bars 23 to roll along the direction of the first vortex bars 23 toward the edge of the turntable 21, thereby transporting the tin ore to the first collection box 25. The water flow washes the stibnite and sphalerite from the first vortex bars 23 to the second vortex bars 24. The second vortex bars 24, which are taller than the first vortex bars 23, block the stibnite and sphalerite. The vibrations cause the stibnite and sphalerite blocked by the second vortex bars 24 to roll along the direction of the second vortex bars 24 toward the edge of the turntable 21, thereby transporting the stibnite and sphalerite to the second collection box 26. The less dense quartz and calcite are directly washed by the water to the edge of the turntable 21 for discharge, thus enabling the beneficiation of multiple metallic minerals.

[0045] This embodiment has the following advantages:

[0046] The turntable 21 is driven to rotate by a driving device 30, thereby simultaneously driving the operation of the grinding device 40 and the mineral processing device 20, reducing the number of driving devices, and achieving the advantages of low construction cost, low energy consumption, and high equipment utilization efficiency.

[0047] The turntable 21 rotates in the first direction, so that the water flows toward the edge of the turntable 21 while flowing in the direction opposite to the first direction, thereby increasing the angle between the water flow direction and the first vortex bar 23 and the second vortex bar 24, ensuring that the water flow can flush the mineral particles with lower density to the side of the second vortex bar 24 away from the support column 41.

[0048] The ends of the first vortex bar 23 and the second vortex bar 24 away from the grinding device 40 are both bent in the first direction, so that the bending directions of the first vortex bar 23 and the second vortex bar 24 are the same, preventing the first vortex bar 23 and the second vortex bar 24 from being poor, ensuring that the mineral can pass through the first vortex bar 23 first and then through the second vortex bar 24, thereby ensuring the accuracy of mineral processing.

[0049] The first vortex bar 23 is lower than the second vortex bar 24 , so that the first vortex bar 23 can only block the tin ore with a higher density, thereby enabling the first vortex bar 23 and the second vortex bar 24 to respectively screen metal minerals of different densities.

[0050] The arc-shaped baffle 27 blocks the quartz and calcite with lower density, preventing them from entering the first collecting box 25 and the second collecting box 26, thereby preventing the screened metal ore from mixing with the quartz and calcite, thereby ensuring the accuracy of mineral processing.

[0051] The ore material is placed on the upper surface of the thickening layer 48, and the turntable 21 rotates to drive the thickening layer 48 and the ore on the thickening layer 48 to rotate, and the first grinding roller 43, the second grinding roller 44 and the third grinding roller 45 rotatably connected to the support frame 42 grind the ore on the thickening layer 48, realizing the function of grinding the ore through the grinding device 40, so that the ore can be finely ground by the grinding device 40. The ore with a larger diameter can be stuck between the first grinding roller 43 and the thickening layer 48, and then the ore with a larger diameter can be crushed by the first grinding roller 43 and the first protrusion 46, thereby realizing the primary crushing of the ore. After the diameter of the ore is reduced after the primary crushing, it can be stuck between the second grinding roller 44 and the thickening layer 48, and then the ore that has been crushed once can be crushed by the second grinding roller 44 and the second protrusion 47, thereby realizing the secondary crushing of the ore. After the diameter of the ore is reduced after the primary crushing, it can be stuck between the first grinding roller 43 and the thickening layer 48, and then the ore that has been crushed twice can be ground by the first grinding roller 43, so that the ore becomes a relatively fine ore that can be screened by the mineral processing device 20, thereby realizing the function of crushing and grinding the ore by the grinding device 40.

[0052] When the ore material is placed in the thickened layer 48 near the support column 41, the smaller diameter ore is lighter and can be washed by the water sprayed from the water nozzle 53 to the area near the second grinding roller 44 and the third grinding roller 45. Therefore, the smaller diameter ore can be directly crushed and ground by the second grinding roller 44 and the third grinding roller 45. However, the larger diameter ore is heavier and the water sprayed from the water nozzle 53 cannot push the larger diameter ore to the second grinding roller 44. Therefore, the larger diameter ore can be crushed by the first grinding roller 43.

[0053] The water inlet pipe 52 is connected to an external water pump, and the external water pump injects water into the water inlet pipe 52. The water in the water inlet pipe 52 flows into the water nozzle 53 through the connecting hole 51, and is sprayed onto the thickening layer 48 through the water nozzle 53, so that the finely ground ore on the thickening layer 48 can be washed onto the turntable 21 by water, thereby realizing the function of the grinding device 40 to transport the finely ground ore and water to the turntable 21.

[0054] As the ore on thickening layer 48 rotates with thickening layer 48 and turntable 21, the unfinely ground ore is pushed by the lower end of scraper section 61 and, driven by the rotating thickening layer 48, moves along the curved direction of scraper section 61 toward support column 41. When the ore moves to the position corresponding to third grinding roller 45, ore with a diameter smaller than the distance between second grinding roller 44 and thickening layer 48 passes through third chute 64 without being further pushed by scraper 60, while the remaining ore continues to be pushed by scraper 60. When the ore moves to the position corresponding to second grinding roller 44, ore with a diameter smaller than the distance between first grinding roller 43 and thickening layer 48 passes through second chute 63 without being further pushed by scraper 60, while the remaining ore continues to be pushed by scraper 60. When the ore moves to the position corresponding to first grinding roller 43, it passes through first chute 62 without being further pushed by scraper 60, thus achieving the screening of ores of different diameters.

[0055] The ore located between the first grinding roller 43 and the support column 41 is pushed by the pushing section 65 as the thickening layer 48 rotates. Since the end of the pushing section 65 away from the support column 41 is bent in the first direction, the ore can move along the bending direction of the stripping plate toward the direction close to the first grinding roller 43, thereby realizing the function of pushing the ore at the support column 41 to move toward the first grinding roller 43.

[0056] The finely ground ore can pass through the gap between the retaining barrel 66 and the thickening layer 48, so that the water flow can flush the finely ground ore from the thickening layer 48 to the turntable 21. The unground ore can be blocked by the retaining barrel 66, ensuring that the ore is finely ground before being flushed onto the turntable 21 by water.

[0057] The support frame 42 provides support force to the material blocking barrel 66 through the support plate 67 , thereby improving the structural stability of the material blocking barrel 66 and the scraper 60 .

[0058] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the invention.

Claims

1. A multi-metal tin ore beneficiation equipment, characterized by: The invention comprises a fixed support (11), a grinding device (40), a mineral processing device (20) and a driving device (30), wherein the grinding device (40), the mineral processing device (20) and the driving device (30) are all mounted on the fixed support (11), the mineral processing device (20) comprises a turntable (21), an annular strip (22), a first vortex strip (23), a second vortex strip (24), a first collecting box (25) and a second collecting box (26), the turntable (21) is rotatably connected to the fixed support (11), the annular strip (22), the first vortex strip (23), the second vortex strip (24), the first collecting box (25) and the second collecting box (26) are all fixedly mounted on the turntable (21), the grinding device (40) is located in the middle of the turntable (21), the annular strip (22) surrounds the first vortex strip (23), the first vortex strip (23) is located around the turntable (21), and the first vortex strip (23) is located around the turntable (21). The vortex strip (22) is located on a side away from the grinding device (40), the first vortex strip (23) is in the shape of a vortex with a circular arc radius gradually increasing in the direction away from the grinding device (40), the second vortex strip (24) is located on a side away from the first vortex strip (23), the second vortex strip (24) is in the shape of a vortex with a circular arc radius gradually increasing in the direction away from the grinding device (40), the end of the first vortex strip (23) away from the grinding device (40) extends to the edge of the turntable (21), the first collecting box (25) is located below the end of the first vortex strip (23) away from the grinding device (40), the end of the second vortex strip (24) away from the grinding device (40) extends to the edge of the turntable (21), and the second collecting box (26) is located below the end of the second vortex strip (24) away from the grinding device (40).

2. The multi-metal tin ore beneficiation equipment according to claim 1, characterized in that: A first direction is set along the circumference of the turntable (21), one end of the first vortex bar (23) away from the grinding device (40) is bent in the first direction, one end of the second vortex bar (24) away from the grinding device (40) is bent in the first direction, and the driving device (30) drives the turntable (21) to rotate in the first direction.

3. The multi-metal tin ore beneficiation equipment according to claim 1, characterized in that: The height of the first vortex strip (23) is greater than the height of the annular strip (22), and the height of the second vortex strip (24) is greater than the height of the first vortex strip (23).

4. The multi-metal tin ore beneficiation equipment according to claim 1, characterized in that: The rotating disc (21) is fixedly connected with an arc-shaped baffle (27), and the arc-shaped baffle (27) is located on one side of the annular strip (22) close to the first collection box (25) and the second collection box (26).

5. The multi-metal tin ore beneficiation equipment according to claim 1, characterized in that: The driving device (30) comprises a driving member (31), a driving gear (32) and a driven gear (33); the driving member (31) is fixedly mounted on a fixed bracket (11); the driving gear (32) is fixedly connected to an output shaft of the driving member (31); the driven gear (33) is fixedly connected to a rotating disk (21); and the driven gear (33) is meshed with the driving gear (32).

6. The multi-metal tin ore beneficiation equipment according to claim 1, characterized in that: The grinding device (40) comprises a support column (41), a support frame (42), a first grinding roller (43), a second grinding roller (44) and a third grinding roller (45), wherein the support column (41) is fixedly mounted on a fixed bracket (11), and the support frame (42) is fixedly mounted on the upper end of the support column (41), and the first grinding roller (43), the second grinding roller (44) and the third grinding roller (45) are all rotatably connected to the support frame (42), and the first grinding roller (43), the second grinding roller (44) and the third grinding roller (45) are arranged in sequence in a direction away from the support column (41), and the second grinding roller ( The diameter of the first grinding roller (43) is smaller than that of the second grinding roller (44), and the outer peripheral surface of the second grinding roller (44) is fixedly connected to a second protrusion (47) whose top is flush with the outer peripheral surface of the third grinding roller (45). The diameter of the first grinding roller (43) is smaller than that of the second grinding roller (44), and the outer peripheral surface of the first grinding roller (43) is fixedly connected to a first protrusion (46) whose top is flush with the outer peripheral surface of the third grinding roller (45). A thickening layer (48) is fixedly connected to the middle of the upper surface of the turntable (21), and the first protrusion (46), the second protrusion (47) and the third grinding roller (45) are in contact with the thickening layer (48).

7. The multi-metal tin ore beneficiation equipment according to claim 6, characterized in that: A communication hole (51) is provided inside the support column (41), a water inlet pipe (52) communicating with the communication hole (51) is fixedly connected to the support column (41), and a water spray port (53) opening toward the upper surface of the thickening layer (48) is provided on the side wall of the support column (41).

8. The multi-metal tin ore beneficiation equipment according to claim 6, characterized in that: The support column (41) is fixedly connected to a scraper (60) located above the thickening layer (48), a gap is provided between the scraper (60) and the thickening layer (48), the scraper (60) is provided with a scraping section (61) at one end away from the support column (41), the scraping section (61) is bent in a first direction at one end close to the support column (41), the scraping section (61) is provided with a first material trough (62), a second material trough (63) and a third material trough (64), the depth of the first material trough (62) is greater than that of the second material trough (64). The depth of the groove (63), the depth of the second material trough (63) is greater than the depth of the third material trough (64), the distance between the first material trough (62) and the support column (41) is equal to the distance between the first grinding roller (43) and the support column (41), the distance between the second material trough (63) and the support column (41) is equal to the distance between the second grinding roller (44) and the support column (41), and the distance between the third material trough (64) and the support column (41) is equal to the distance between the third grinding roller (45) and the support column (41).

9. The multi-metal tin ore beneficiation equipment according to claim 8, characterized in that: The scraper (60) is provided with a pushing section (65) at one end close to the support column (41), and the pushing section (65) is bent in a first direction at one end away from the support column (41).

10. The multi-metal tin ore beneficiation equipment according to claim 8, characterized in that: The scraper (60) is fixedly connected to a material blocking cylinder (66), a gap is provided between the material blocking cylinder (66) and the thickening layer (48), the axis of the material blocking cylinder (66) is the same as the axis of the support column (41), the material blocking cylinder (66) surrounds the scraper (60), the first grinding roller (43), the second grinding roller (44), and the third grinding roller (45), the material blocking cylinder (66) is fixedly connected to a support plate (67), and the support plate (67) is fixedly connected to the support frame (42).

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