High-efficiency magnetic field-assisted selective high-purity rare metal precision smelting device and method

Abstract

The present invention relates to the technical field of metal ore smelting, and specifically, to a device and method for high-purity rare metal precision smelting with high-efficiency magnetic field assisted selectivity, including a crushing box for crushing ores containing rare metals and a magnetic separation component for separating high-purity rare metal ores, the magnetic separation component including an outer cover and a magnetic field generator arranged on the left and right outer walls of the outer cover, a feeding barrel for controlling smelting feed is arranged between the crushing box and the magnetic separation component, a crushing component is arranged in the box body, a sieve plate structure for drying and selecting ore is arranged in the box body, and a feeding component for quantitative feeding is arranged in the feeding barrel. The present invention screens the crushed ore fragments to make them meet the needs of subsequent smelting; at the same time, the device can intermittently and quantitatively feed the ore fragments by arranging the feeding component, so as to avoid excessive single feeding, which results in the inability to completely separate the fragments containing rare metals from the waste during magnetic separation, thus affecting the smelting purity.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal ore smelting, and specifically relates to a device and method for high-purity rare metal precision smelting with high-efficiency magnetic field assisted selectivity. Background Art

[0002] In the process of rare metal smelting, the ore needs to be sorted to ensure high purity. Since the magnetic permeability of rare metals is different from that of ore waste, during screening, the ore fragments containing rare metals can be separated and enriched through high-efficiency magnetic fields to ensure the subsequent smelting purity.

[0003] For example, the invention patent with the authorization announcement number CN117861846A in the field of mining equipment technology discloses a centrifugal dry weak magnetic field magnetic separator, including a frame, a feeding device, a concentrate or tailings bucket, a dust cover, a permanent magnetic system, a magnetic system support frame, a transmission shaft, a separation cone and a reduction motor. This magnetic separator can significantly enhance the centrifugal force to loosen and separate the magnetite particle group, that is, during the separation process, the rotation of the separation cone produces an instantaneous and continuous tangential friction force on the ore particle group, thereby producing a continuous strong dispersion effect on the ore particle group, which can improve the dry magnetic separation effect of fine-grained magnetite.

[0004] Combining the above cases and actual conditions, we found the following problems: when feeding the ore after crushing, it is impossible to ensure that the particle size of the crushed ore is completely consistent, resulting in the inability to effectively and synchronously enrich and separate the crushed ore containing rare metals under the combined action of gravity and magnetism, affecting the purity of subsequent smelting and causing waste; in addition, when feeding, too much material is fed at a time, which will also cause the crushed ore far away from the magnetic field generating device to be blocked by other crushed ore, resulting in a smaller magnetic force on it, and it cannot be separated in time, which will also affect the purity and waste of subsequent smelting. Summary of the invention

[0005] The object of the present invention is to provide a highly efficient magnetic field-assisted, selective, high-purity rare metal precision smelting device and method to solve the above-mentioned problems of the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a high-purity rare metal precision smelting device with high-efficiency magnetic field-assisted selectivity, comprising a crushing box for crushing ores containing rare metals and a magnetic separation component for separating high-purity rare metal ores, the crushing box comprising a box body, a feed port arranged at the top of the box body, and a baffle plate arranged on the inner wall on the left side of the feed port, the magnetic separation component comprising an outer cover and a magnetic field generator arranged on the left and right outer walls of the outer cover, a feeding barrel for controlling smelting feed is arranged between the crushing box and the magnetic separation component, a crushing component for crushing ore is arranged in the box body, a sieve plate structure for sun-drying ore is arranged near the bottom of the box body, a feeding component for quantitative feeding and an adjusting component for changing the feeding amount are arranged in the feeding barrel;

[0007] The sieve plate structure comprises a first transverse axis, a first convex plate fixed to the front end of the first transverse axis, a second convex plate fixed to the rear end of the first transverse axis, and a support rod structure arranged at the front end of the first transverse axis, the support rod structure comprises an upper inclined rod whose bottom end is hinged to the protruding portion of the first convex plate, a rod sleeve located below the upper inclined rod, and a fixed rod located below the rod sleeve, the top end of the rod sleeve is hinged to the bottom end of the upper inclined rod, a plurality of purlins are arranged at the bottom end of the fixed rod, the purlins are regularly distributed along the box wall of the box body, the top end of the fixed rod is slidable with the rod sleeve The bottom end of the fixed rod is fixed to the purlin in the middle position, the front and rear ends of the purlin in the middle position are fixed to the front and rear inner walls of the box body, and the front and rear ends of the remaining purlins are slidably connected to the front and rear inner walls of the box body. Hinge rods are symmetrically arranged on the left and right side walls of the rod sleeve, the top end of the hinged rod is hinged to the corresponding side wall of the rod sleeve, and the bottom end is fixedly connected to the corresponding purlin, and the outer side walls of the two outermost purlins are fixedly connected with connecting plates, which are inserted into the box wall of the box body and slidably connected to the box wall.

[0008] In the technical solution of the present invention, the feeding barrel includes a barrel body, a cavity located at the front end of the barrel body, and a discharge port located at the bottom end of the barrel body and connected to the left side of the top surface of the outer cover. The top surface of the barrel body is provided with a connecting port connected to the box body, and the purlins are distributed within the range of the connecting port.

[0009] In the technical solution of the present invention, the protruding part of the first protruding plate faces right, the protruding part of the second protruding plate faces horizontally downward, and the second protruding plate has a large mass. The rear end of the first horizontal axis passes through the rear side wall of the box body, and the second protruding plate is arranged outside the box body.

[0010] In the technical solution of the present invention, a slide groove is provided inside the top end of the rod sleeve, the top end of the fixed rod extends into the slide groove and the two are slidably connected, a fixed rod groove is provided in the middle position of the lower part of the rod sleeve, the fixed rod is adapted to the fixed rod groove, and the bottom end of the rod sleeve passes through the box body, the connecting port and the barrel body from top to bottom in sequence and extends into the barrel body.

[0011] In the technical solution of the present invention, the feeding assembly includes a rotating drum with a radius the same as the inner radius of the barrel body and a paddle structure coordinated with the screen plate structure, four material receiving troughs are regularly arranged on the rotating drum, a bottom plate is arranged in the material receiving trough, a placing cavity is opened in the middle of the rotating drum, and the paddle structure is arranged on the outer side of the rear end of the barrel body.

[0012] In the technical solution of the present invention, the shift plate structure includes a second motor coaxially fixed to the rear end of the rotating drum and four fixed sleeves arranged one by one corresponding to the material trough, the inner end of the fixed sleeve is fixed to the output shaft of the second motor, a shift rod is provided in the fixed sleeve, and the fixed sleeve is provided with bolts passing through the left and right sides at the top, and the shift rod is provided with a plurality of regularly distributed sockets up and down, the sockets are adapted to the bolts, and the shift rod and the second convex plate are located in the same vertical plane.

[0013] In the technical solution of the present invention, an adjustment component is provided in the placement cavity, and the adjustment component includes a second transverse axis whose rear end is rotatably connected to the rear cavity wall of the placement cavity, a plurality of fixing plates regularly distributed on the side walls of the second transverse axis, and a plurality of push rod structures, the fixing plate is cross-shaped and fixedly connected to the side walls of the second transverse axis, an arc groove is provided on the cross-extending part of the fixing plate, and the push rod structure is arranged in a one-to-one correspondence with the arc groove, the front end of the second transverse axis penetrates into the cavity, and a transmission rod is provided on the front end face of the second transverse axis, one end of the transmission rod is fixedly connected to the center of the front end face of the second transverse axis, and the other end extends to the left and is hinged with a lower oblique rod, and the top end of the lower oblique rod is fixedly connected to the bottom end of the rod sleeve.

[0014] In the technical solution of the present invention, the push rod structure includes a push rod and a clamping rod vertically fixed to the inner end of the push rod, and a support rod groove corresponding to the position of the push rod is provided at the position corresponding to the position of the material trough on the inner wall of the placement cavity, and the outer end of the clamping rod is slidably connected to the corresponding arc groove. Four fixing parts are provided in the placement cavity, and the fixing parts include a cross bar horizontally arranged front and rear, a plurality of limit rods horizontally arranged left and right, and a radial groove fixed to the inner end of the limit rod, the front end of the cross bar passes through the rear side wall of the cavity and is fixed to the front inner wall of the cavity, and the inner end of the clamping rod is slidably connected to the radial groove.

[0015] In the technical solution of the present invention, the crushing assembly includes a crushing shaft, a number of rotating plates regularly distributed on the crushing shaft, and a number of hammer heads arranged between two adjacent rotating plates, the inner ends of the hammer heads are hinged to the adjacent rotating plates, a first motor is fixed to the upper part of the front outer wall of the box body, the output shaft of the first motor is transmission-connected to the crushing shaft through a crawler track, the middle part of the crushing shaft is hollow, the first horizontal axis is coaxially arranged inside the crushing shaft, an installation cavity is provided on the front side of the box body, the front ends of the crushing shaft and the first horizontal axis both pass through the rear side wall of the installation cavity and extend into the installation cavity, and the screen plate structure is arranged in the installation cavity.

[0016] On the other hand, the present invention also provides a high-efficiency magnetic field-assisted selective high-purity rare metal precision smelting method, comprising the following steps:

[0017] S1, feed the ore into the box from the feed port, then turn on the first motor to drive the crawler to drive the crushing shaft to rotate, and drive the hammer to hit the ore to crush it;

[0018] S2. After crushing, the first motor is turned off, and the second motor is started to drive the drum and the paddle structure to rotate synchronously. When the material trough faces the connecting port, the paddle lever just paddles the second convex plate to drive the first horizontal axis to rotate clockwise.

[0019] S3, the first horizontal axis rotates clockwise, and the rod sleeve moves downward through the upper inclined rod, so that the rod sleeve moves downward, and then the hinged rod pushes the purlins on both sides outward, so that the gap between the purlins becomes larger, and the crushed ore can fall into the connecting port and enter the material trough;

[0020] S4. At the same time, the rod sleeve that moves downward drives the transmission rod to rotate counterclockwise through the lower oblique rod, thereby driving the second horizontal axis and the fixed plate to rotate synchronously. Under the restriction of the radial groove, the clamping rod is driven by the arc groove to push the ejector rod outward, thereby pushing up the bottom plate, so that the volume of the material trough changes synchronously according to the size of the purlin gap;

[0021] S5. When the trough containing ore fragments rotates toward the discharge port, the ore fragments will fall vertically into the outer cover, and under the action of the magnetic field generator, the fragments containing rare metals will be deflected and separated, and the enriched rare metal fragments will then be sent to the smelting furnace for direct smelting.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In the present invention, by setting a screen plate structure, when unloading, the second motor drives the paddle plate structure to paddle the second convex plate to drive the first horizontal and first convex plates to rotate clockwise, so that the upper inclined rod presses down the rod sleeve to move the rod sleeve downward, and then the hinged rod pushes the purlins on both sides outward to enlarge the purlin gaps. At this time, the crushed ore can fall into the connecting port and enter the material trough, so as to achieve the purpose of screening crushed ores of different particle sizes before magnetic separation.

[0024] 2. In the present invention, by setting a feeding assembly, when the second motor drives the rotating drum to rotate until the material trough faces the connecting port, the lever just pushes the second convex plate, and the crushed ore can fall into the connecting port and enter the material trough. At the same time, the downwardly moved rod sleeve will drive the transmission rod to rotate counterclockwise through the lower inclined rod, thereby driving the second horizontal axis and the fixed plate to rotate synchronously. Under the restriction of the radial groove, the clamping rod is driven by the arc groove to push the support rod outward, and then push the bottom plate, so that the volume of the material trough changes synchronously with the size of the purlin gap. The larger the purlin gap, the larger the particle size of the falling crushed ore, and the smaller the volume of the material trough, thereby avoiding excessive obstruction between the crushed ore, so that the discharge amount is adapted to the particle size of the crushed ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a rear view of the overall structure of the present invention;

[0027] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the interior of the crushing box in the present invention;

[0029] Figure 5 An exploded view of the crushing assembly in the present invention;

[0030] Figure 6 It is a schematic diagram of the sieve plate assembly in the present invention;

[0031] Figure 7 It is a schematic diagram of the connection between the sieve plate assembly and the feeding assembly in the present invention;

[0032] Figure 8 An exploded view of the sieve plate assembly in the present invention;

[0033] Fig. 9 For the present invention Figure 8 Enlarged view of point A in the middle;

[0034] Fig.10 This is a schematic diagram of the interior of the feeding barrel in the present invention;

[0035] Fig.11 It is a schematic diagram of the feeding assembly in the present invention;

[0036] Fig.12 Another schematic diagram of the feeding assembly in the present invention;

[0037] Fig.13 It is a schematic diagram of the adjustment component in the present invention;

[0038] Fig.14 It is an exploded view of the fixing member in the present invention;

[0039] Fig.15 It is an exploded view of the paddle structure in the present invention;

[0040] Description of reference numerals:

[0041] 1. Crushing box; 11. Box body; 12. Feeding port; 13. Baffle plate; 14. Installation cavity;

[0042] 2. Feeding barrel; 21. Barrel body; 22. Cavity; 23. Discharging port; 24. Connecting port;

[0043] 3. Magnetic separation component; 31. Outer cover; 32. Magnetic field generator;

[0044] 4. Sieve plate structure; 41. First transverse axis; 42. First convex plate; 43. Second convex plate; 44. Support rod structure; 441. Upper oblique rod; 442. Rod sleeve; 4421. Slide groove; 4422. Fixed rod groove; 443. Fixed rod; 444. Articulated rod; 445. Lower oblique rod; 446. Transmission rod; 45. Purlin; 451. Connecting plate;

[0045] 5. Feeding assembly; 51. Rotating drum; 511. Material trough; 512. Support rod groove; 52. Bottom plate; 53. Plate structure; 531. Second motor; 532. Fixed sleeve; 533. Rod; 54. Placement chamber;

[0046] 6. Crushing assembly; 61. Crushing shaft; 62. Rotating plate; 63. Hammer head; 64. First motor; 65. Track;

[0047] 7. Adjustment assembly; 71. Second horizontal axis; 72. Fixing plate; 721. Arc groove; 73. Fixing piece; 731. Cross bar; 732. Limiting rod; 733. Radial groove; 74. Push rod structure; 741. Push rod; 742. Clamping rod. DETAILED DESCRIPTION

[0048] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0049] Unless explicitly stated otherwise, throughout the specification, the term “comprise” or variations thereof such as “include” or “comprising” will be understood as including the stated elements or components but not excluding other elements or components.

[0050] Reference Figure 1-Figure 15 As shown, this embodiment provides a technical solution:

[0051] An efficient magnetic field-assisted selective high-purity rare metal precision smelting device comprises a crushing box 1 for crushing ores containing rare metals and a magnetic separation component 3 for separating high-purity rare metal ores. The crushing box 1 comprises a box body 11, a feed port 12 arranged at the top of the box body 11, and a baffle plate 13 arranged on the inner wall on the left side of the feed port 12. The ore is fed into the crushing box 1 through the feed port 12. The baffle plate 13 prevents the ore fragments from collapsing during the crushing process. The magnetic separation component 3 comprises an outer cover 31 and a magnetic field generator 32 arranged on the left and right outer walls of the outer cover 31. The magnetic field generator 32 generates a magnetic field. Since the magnetic permeability of the fragments containing rare metals and the waste are different, the magnetic force they are subjected to is different, so the two can be separated. This is a prior art and will not be described in detail here.

[0052] A feeding barrel 2 for controlling smelting feed is provided between the crushing box 1 and the magnetic separation component 3, a crushing component 6 for crushing ore is provided in the box body 11, a sieve plate structure 4 for drying and selecting ore is provided at the bottom of the box body 11, and a feeding component 5 for quantitative feeding and an adjusting component 7 for changing the feeding amount are provided in the feeding barrel 2;

[0053] The sieve plate structure 4 includes a first transverse axis 41, a first convex plate 42 fixed to the front end of the first transverse axis 41, a second convex plate 43 fixed to the rear end of the first transverse axis 41, and a support rod structure 44 arranged at the front end of the first transverse axis 41. The support rod structure 44 includes an upper inclined rod 441 whose bottom end is hinged to the protruding portion of the first convex plate 42, a rod sleeve 442 located below the upper inclined rod 441, and a fixed rod 443 located below the rod sleeve 442. When the second convex plate 43 is toggled by the toggle plate structure 53, the first transverse axis 41 and the first convex plate 42 at the front end will be driven to rotate clockwise synchronously.

[0054] The top of the rod sleeve 442 is hinged to the bottom of the upper inclined rod 441, and a plurality of purlins 45 are provided at the bottom of the fixed rod 443. The purlins 45 are regularly distributed along the wall of the box body 11. The top of the fixed rod 443 is slidably connected to the rod sleeve 442, and the bottom of the fixed rod 443 is fixed to the purlin 45 at the middle position. The front and rear ends of the purlin 45 at the middle position are fixed to the front and rear inner walls of the box body 11, and the front and rear ends of the remaining purlins 45 are slidably connected to the front and rear inner walls of the box body 11. When the first convex plate 42 is driven to rotate clockwise, the rod sleeve 442 will be pressed down through the upper inclined rod 441. Since the rod sleeve 442 is slidably connected to the fixed rod 443 and the fixed rod 443 is fixed, the rod sleeve 442 can only slide vertically downward along the fixed rod 443.

[0055] Hinged rods 444 are symmetrically provided on the left and right side walls of the rod sleeve 442. The top of the hinged rod 444 is hinged to the corresponding side wall of the rod sleeve 442, and the bottom end is fixedly connected to the corresponding purlin 45. The outer walls of the two outermost purlins 45 are fixedly connected with connecting plates 451. The connecting plates 451 are inserted into the box wall of the box body 11 and are slidably connected to the box wall. When the rod sleeve 442 slides downward, since both ends of the hinged rod 444 are hinged, the bottom end of the hinged rod 444 will push the purlins 45 on both sides outward. Since the purlins 45 on both sides are distributed along the box wall, they will slide outward and open, so that the gap between the purlins 45 becomes larger, and the ore crushed materials can fall down at this time.

[0056] Specifically, Figure 7 As shown, the feeding barrel 2 includes a barrel body 21, a cavity 22 located at the front end of the barrel body 21, and a discharge port 23 located at the bottom end of the barrel body 21 and connected to the left side of the top surface of the outer cover 31. The top surface of the barrel body 21 is provided with a connecting port 24 connected to the box body 11, and the purlins 45 are distributed within the range of the connecting port 24. The falling ore fragments enter the barrel body 21 through the connecting port 24.

[0057] In addition, if Figure 1-Figure 6 As shown, the protruding portion of the first convex plate 42 faces rightward, and the protruding portion of the second convex plate 43 faces horizontally downward, ensuring that when the plate-shifting structure 53 shifts the second convex plate 43, the first transverse axis 41 and the first convex plate 42 can be driven to rotate clockwise. The second convex plate 43 has a large mass. After the plate-shifting structure 53 moves away from the second convex plate 43, the second convex plate 43 will return to its original position under the action of gravity, thereby driving the purlin 45 to reduce the gap again, so that the timing of opening the purlin 45 corresponds to the timing of the material trough 511 moving to the connecting port 24, thereby preventing the ore fragments from falling all the time. The rear end of the first transverse axis 41 passes through the rear side wall of the box body 11, and the second convex plate 43 is arranged outside the box body 11.

[0058] Specifically, Figure 3 , Figure 8 as well as Fig. 9 As shown, a slide groove 4421 is provided inside the top end of the rod sleeve 442, the top end of the fixed rod 443 extends into the slide groove 4421 and the two are slidably connected, and a fixed rod groove 4422 is provided in the middle position of the lower part of the rod sleeve 442. The fixed rod groove 4422 can prevent the rod sleeve 442 from being blocked by the fixed rod 443 when moving downward. The fixed rod 443 is adapted to the fixed rod groove 4422, and the bottom end of the rod sleeve 442 passes through the box body 11, the connecting port 24 and the barrel body 21 from top to bottom and extends into the barrel body 21.

[0059] In addition, if Figure 10-Figure 15 As shown, the feeding assembly 5 includes a rotating drum 51 having a radius the same as the inner radius of the barrel body 21 and a paddle structure 53 matched with the screen plate structure 4. Four material troughs 511 are regularly arranged on the rotating drum 51. When the material troughs 511 are rotated to face the connecting port 24, the ore crushed materials can fall into the material troughs 511. A bottom plate 52 is arranged in the material trough 511, and a baffle is arranged in the middle of the trough wall of the material trough 511 to prevent the bottom plate 52 from sliding out of the material trough 511. The bottom plate 52 is slidably connected to the material trough 511. The size of the bottom plate 52 is the same as the size of the bottom of the material trough 511. A placement cavity 54 is opened in the middle of the rotating drum 51, and the paddle structure 53 is arranged on the outer side of the rear end of the barrel body 21.

[0060] Specifically, the paddle structure 53 includes a second motor 531 coaxially fixed to the rear end of the drum 51 and four fixing sleeves 532 corresponding to the material troughs 511. The inner end of the fixing sleeve 532 is fixed to the output shaft of the second motor 531. A paddle 533 is arranged in the fixing sleeve 532. The fixing sleeve 532 is provided with bolts passing through the left and right sides at the top. The paddle 533 is provided with a plurality of regularly distributed holes in the upper and lower parts, and the holes are adapted to the bolts. The paddle 533 and the second convex plate 43 are located in the same vertical plane. The paddle structure 53 will rotate synchronously with the drum 51. When the material trough 511 is toward the connecting port 24, the paddle 533 will also contact the second convex plate 43 and paddle the second convex plate 43. In addition, by selecting different plugging holes and bolts for insertion, the height of the paddle 533 can be changed, the angle of the second convex plate 43 and the first convex plate 42 can be changed, and then the sliding distance of the rod sleeve 442 can be changed, and finally the purpose of changing the size of the gap opened by the purlin 45 can be achieved.

[0061] The placement cavity 54 is provided with an adjustment component 7, which includes a second transverse shaft 71 with a rear end connected to the rear wall of the placement cavity 54 for rotation, a plurality of fixed plates 72 regularly distributed on the side wall of the second transverse shaft 71, and a plurality of ejector rod structures 74. The fixed plates 72 are cross-shaped and fixedly connected to the side wall of the second transverse shaft 71. An arc groove 721 is provided on the cross-extending portion of the fixed plates 72. The ejector rod structures 74 and the arc grooves 721 are arranged one by one. The front end of the second transverse shaft 71 penetrates into the cavity 22. The front end face of the second transverse shaft 71 is provided with a transmission The movable rod 446, one end of the transmission rod 446 is fixedly connected to the center of the front end face of the second transverse axis 71, and the other end extends to the left and is hinged with a lower inclined rod 445. The top end of the lower inclined rod 445 is fixedly connected to the bottom end of the rod sleeve 442. The lower inclined rod 445 is tilted to the left. When the rod sleeve 442 slides down, the lower inclined rod 445 will push the transmission rod 446 to rotate counterclockwise and drive the second transverse axis 71 to rotate synchronously. At this time, the fixed plate 72 rotates synchronously, so that the arc groove 721 can push the top rod structure 74 outward to slide outward;

[0062] Furthermore, the push rod structure 74 includes a push rod 741 and a clamping rod 742 vertically fixed to the inner end of the push rod 741. A support rod groove 512 corresponding to the position of the push rod 741 is provided at the position of the inner wall of the placement cavity 54 corresponding to the position of the material trough 511. Since the rotary drum 51 is rotating all the time during the material unloading process, when the push rod 741 is driven to move outward and extend out of the support rod groove 512 to lift the bottom plate 52, the support rod groove 512 can prevent the push rod 741 from blocking the rotation of the rotary drum 51. The outer end of the clamping rod 742 is slidably connected to the corresponding arc groove 721. Four fixing members 73 are provided in the placement cavity 54. Since the counterclockwise rotation angle of the second horizontal axis 71 is less than 90°, the fixing member 73 is arranged at the edge and will not block the rotation of the fixing member 73.

[0063] The fixing member 73 includes a cross bar 731 horizontally arranged in the front and rear directions, a plurality of limiting rods 732 horizontally arranged in the left and right directions, and a radial groove 733 fixed to the inner end of the limiting rod 732. The front end of the cross bar 731 passes through the rear side wall of the cavity 22 and is fixed to the front inner wall of the cavity 22. The clamping rod 742 is slidably connected to the radial groove 733 at the inner end. Under the restriction of the radial groove 733, the push rod 741 can only move up and down along the radial groove 733.

[0064] In addition, if Figure 1-Figure 5 As shown, the crushing assembly 6 includes a crushing shaft 61, a plurality of rotating plates 62 regularly distributed on the crushing shaft 61, and a plurality of hammers 63 arranged between two adjacent rotating plates 62. The inner ends of the hammers 63 are hinged to the adjacent rotating plates 62. A first motor 64 is fixed to the upper part of the front outer wall of the box body 11. The output shaft of the first motor 64 is connected to the crushing shaft 61 through a crawler 65. The middle part of the crushing shaft 61 is hollow. The first transverse axis 41 is coaxially arranged inside the crushing shaft 61. An installation cavity 14 is provided on the front side of the box body 11. The front ends of the crushing shaft 61 and the first transverse axis 41 pass through the rear side wall of the installation cavity 14 and extend into the installation cavity 14. The sieve plate structure 4 is arranged in the installation cavity 14. The first motor 64 drives the crawler 65 to drive the crushing shaft 61 to rotate, and drives the hammer 63 to rotate at high speed to hit the ore through the rotating plate 62, so that the ore is crushed.

[0065] The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting method of the present invention comprises the following steps:

[0066] S1, feed the ore into the box 11 from the feed port 12, then turn on the first motor 64 to drive the crawler 65 to drive the crushing shaft 61 to rotate, and drive the hammer 63 to hit the ore to crush it;

[0067] S2. After crushing, the first motor 64 is turned off, and the second motor 531 is started to drive the drum 51 and the shift plate structure 53 to rotate synchronously. When the material trough 511 faces the connecting port 24, the shift rod 533 just shifts the second convex plate 43 to drive the first horizontal shaft 41 to rotate clockwise.

[0068] S3, the first horizontal shaft 41 rotates clockwise to press the rod sleeve 442 downward through the upper inclined rod 441, so that the rod sleeve 442 moves downward, and then the hinge rod 444 pushes the purlins 45 on both sides outward, so that the gaps of the purlins 45 become larger, and the crushed ore can fall into the connecting port 24 and enter the material trough 511;

[0069] S4. At the same time, the rod sleeve 442 that moves downward drives the transmission rod 446 to rotate counterclockwise through the lower inclined rod 445, thereby driving the second horizontal shaft 71 and the fixing plate 72 to rotate synchronously. Under the restriction of the radial groove 733, the clamping rod 742 is driven by the arc groove 721 to push the ejector rod 741 outward, thereby pushing up the bottom plate 52, so that the volume of the material trough 511 changes synchronously according to the size of the gap of the purlin 45.

[0070] S5. When the trough 511 containing ore fragments rotates toward the discharge port 23, the ore fragments will fall vertically into the outer cover 31, and under the action of the magnetic field generator 32, the fragments containing rare metals will be deflected and separated, and the enriched rare metal fragments will then be sent to the smelting furnace for direct smelting.

[0071] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A highly efficient magnetic field-assisted, selective, high-purity rare metal precision smelting device, comprising a crushing box (1) for crushing ores containing rare metals and a magnetic separation component (3) for separating high-purity rare metal ores, wherein the crushing box (1) comprises a box body (11), a feed port (12) arranged at the top of the box body (11), and a baffle plate (13) arranged on the left inner wall of the feed port (12), and the magnetic separation component (3) comprises an outer cover (31) and a magnetic field generator (32) arranged on the left and right outer walls of the outer cover (31), characterized in that: A feeding barrel (2) for controlling smelting feed is provided between the crushing box (1) and the magnetic separation assembly (3); a crushing assembly (6) for crushing ore is provided in the box body (11); a sieve plate structure (4) for screening ore is provided at the bottom of the box body (11); a feeding assembly (5) for quantitative feeding and an adjusting assembly (7) for changing the feeding amount are provided in the feeding barrel (2); The sieve plate structure (4) comprises a first transverse axis (41), a first convex plate (42) fixed to the front end of the first transverse axis (41), a second convex plate (43) fixed to the rear end of the first transverse axis (41), and a support rod structure (44) arranged at the front end of the first transverse axis (41), the support rod structure (44) comprising an upper inclined rod (441) whose bottom end is hinged to a protruding portion of the first convex plate (42), a rod sleeve (442) located below the upper inclined rod (441), and a fixed rod (443) located below the rod sleeve (442), the top end of the rod sleeve (442) being hinged to the bottom end of the upper inclined rod (441), the bottom end of the fixed rod (443) being provided with a plurality of purlins (45), the purlins (45) being regularly distributed along the box wall of the box body (11), and the fixed rod (443) being arranged at a plurality of purlins (45) ... The top end of the fixing rod (443) is slidably connected to the rod sleeve (442), the bottom end of the fixing rod (443) is fixed to the purlin (45) at the middle position, the front and rear ends of the purlin (45) at the middle position are fixed to the front and rear inner walls of the box body (11), and the front and rear ends of the remaining purlins (45) are slidably connected to the front and rear inner walls of the box body (11), and the left and right side walls of the rod sleeve (442) are symmetrically provided with hinged rods (444), the top end of the hinged rod (444) is hinged to the corresponding side wall of the rod sleeve (442), and the bottom end is fixedly connected to the corresponding purlin (45), and the outer side walls of the two outermost purlins (45) are fixedly connected with a connecting plate (451), and the connecting plate (451) is inserted into the box wall of the box body (11) and is slidably connected to the box wall.

2. The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting device according to claim 1, characterized in that: The feeding barrel (2) comprises a barrel body (21), a cavity (22) located at the front end of the barrel body (21), and a discharge port (23) located at the bottom end of the barrel body (21) and connected to the left side of the top surface of the outer cover (31); the top surface of the barrel body (21) is provided with a communication port (24) connected to the box body (11); and the purlins (45) are distributed within the range of the communication port (24).

3. The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting device according to claim 2, characterized in that: The protruding portion of the first protruding plate (42) faces rightward, the protruding portion of the second protruding plate (43) faces horizontally downward, and the second protruding plate (43) has a large mass. The rear end of the first transverse axis (41) passes through the rear side wall of the box body (11), and the second protruding plate (43) is arranged outside the box body (11).

4. The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting device according to claim 3, characterized in that: A slide groove (4421) is provided inside the top end of the rod sleeve (442), the top end of the fixed rod (443) extends into the slide groove (4421) and the two are slidably connected, a fixed rod groove (4422) is provided at the middle position of the lower part of the rod sleeve (442), the fixed rod (443) is matched with the fixed rod groove (4422), and the bottom end of the rod sleeve (442) passes through the box body (11), the connecting port (24) and the barrel body (21) in sequence from top to bottom and extends into the barrel body (21).

5. The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting device according to claim 4, characterized in that: The feeding assembly (5) comprises a rotating drum (51) having a radius identical to the inner radius of the barrel body (21) and a paddle structure (53) cooperating with the screen plate structure (4); four material receiving grooves (511) are regularly arranged on the rotating drum (51); a bottom plate (52) is arranged in the material receiving groove (511); a placement cavity (54) is opened in the middle of the rotating drum (51); and the paddle structure (53) is arranged on the outer side of the rear end of the barrel body (21).

6. The highly efficient magnetic field-assisted selective high-purity rare metal precision smelting device according to claim 5, characterized in that: The shift plate structure (53) comprises a second motor (531) coaxially fixed to the rear end of the rotating drum (51) and four fixing sleeves (532) arranged one by one corresponding to the material troughs (511); the inner end of the fixing sleeve (532) is fixed to the output shaft of the second motor (531); a shift rod (533) is arranged in the fixing sleeve (532); bolts passing through the fixing sleeve (532) are arranged at the top thereof and are provided on the shift rod (533); a plurality of regularly distributed jacks are arranged on the shift rod (533); the jacks are adapted to fit the bolts; and the shift rod (533) and the second convex plate (43) are located in the same vertical plane.

7. The highly efficient magnetic field-assisted, selective, high-purity rare metal precision smelting device according to claim 6, characterized in that: An adjustment component (7) is provided in the placement cavity (54). The adjustment component (7) comprises a second transverse axis (71) whose rear end is rotatably connected to the rear cavity wall of the placement cavity (54), a plurality of fixing plates (72) regularly distributed on the side wall of the second transverse axis (71), and a plurality of push rod structures (74). The fixing plate (72) is cross-shaped and fixedly connected to the side wall of the second transverse axis (71). An arc groove (721) is provided on the cross-extending portion of the fixing plate (72). The push rod structure (74) is arranged in a one-to-one correspondence with the arc groove (721). The front end of the second transverse axis (71) penetrates into the cavity (22). A transmission rod (446) is provided on the front end surface of the second transverse axis (71). One end of the transmission rod (446) is fixedly connected to the center of the front end surface of the second transverse axis (71), and the other end extends to the left and is hinged to a lower inclined rod (445). The top end of the lower inclined rod (445) is fixedly connected to the bottom end of the rod sleeve (442).

8. The highly efficient magnetic field-assisted, selective, high-purity rare metal precision smelting device according to claim 7, characterized in that: The push rod structure (74) comprises a push rod (741) and a clamping rod (742) vertically fixed to the inner end of the push rod (741); a support rod groove (512) corresponding to the position of the push rod (741) is provided at a position of the inner wall of the placement cavity (54) corresponding to the position of the material storage groove (511); the outer end of the clamping rod (742) is slidably connected to the corresponding arc groove (721); four fixing members (73) are provided in the placement cavity (54); the fixing members (73) comprise a cross rod (731) horizontally arranged front and rear, a plurality of limiting rods (732) horizontally arranged left and right, and a radial groove (733) fixed to the inner end of the limiting rod (732); the front end of the cross rod (731) passes through the rear side wall of the cavity (22) and is fixed to the front inner wall of the cavity (22); the inner end of the clamping rod (742) is slidably connected to the radial groove (733).

9. The highly efficient magnetic field-assisted, selective, high-purity rare metal precision smelting device according to claim 8, characterized in that: The crushing assembly (6) comprises a crushing shaft (61), a plurality of rotating plates (62) regularly distributed on the crushing shaft (61), and a plurality of hammer heads (63) arranged between two adjacent rotating plates (62); the inner ends of the hammer heads (63) are hinged to the adjacent rotating plates (62); a first motor (64) is fixed to the upper portion of the front outer wall of the housing (11); the output shaft of the first motor (64) is transmission-connected to the crushing shaft (61) via a crawler (65); the middle portion of the crushing shaft (61) is hollow; the first transverse axis (41) is coaxially arranged inside the crushing shaft (61); an installation cavity (14) is provided on the front inner side of the housing (11); the front ends of the crushing shaft (61) and the first transverse axis (41) both pass through the rear side wall of the installation cavity (14) and extend into the installation cavity (14); and the sieve plate structure (4) is arranged in the installation cavity (14).

10. A method for high-purity rare metal precision smelting with high-efficiency magnetic field assisted selectivity, using the high-purity rare metal precision smelting device with high-efficiency magnetic field assisted selectivity according to claim 9, characterized in that: The following steps are involved: S1, feeding ore from the feed port (12) into the box body (11), then turning on the first motor (64) to drive the crawler belt (65) to drive the crushing shaft (61) to rotate, and drive the hammer head (63) to strike the ore to crush it; S2, after the crushing, the first motor (64) is turned off, and the second motor (531) is started to drive the rotating drum (51) and the shifting plate structure (53) to rotate synchronously, and when the material trough (511) faces the connecting port (24), the shifting rod (533) just shifts the second convex plate (43) to drive the first horizontal shaft (41) to rotate clockwise; S3, the first horizontal shaft (41) rotates clockwise to press the rod sleeve (442) downward through the upper inclined rod (441), so that the rod sleeve (442) moves downward, and then the hinge rod (444) pushes the purlins (45) on both sides outward, so that the gap between the purlins (45) becomes larger, and the crushed ore can fall into the connecting port (24) and enter the material trough (511); S4. At the same time, the rod sleeve (442) that moves downward drives the transmission rod (446) to rotate counterclockwise through the lower oblique rod (445), thereby driving the second horizontal shaft (71) and the fixed plate (72) to rotate synchronously. Under the restriction of the radial groove (733), the clamping rod (742) is driven by the arc groove (721) to push the ejector rod (741) outward, thereby pushing up the bottom plate (52), so that the volume of the material trough (511) changes synchronously according to the size of the gap of the purlin (45); S5. When the trough (511) containing the ore fragments rotates toward the discharge port (23), the ore fragments fall vertically into the outer cover (31), and under the action of the magnetic field generator (32), the fragments containing rare metals are deflected and separated, and the enriched rare metal fragments are then sent to the smelting furnace for direct smelting.

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