Recovery equipment for recovering high-purity rare earth metal based on waste residues

Abstract

The invention discloses recycling equipment for recycling high-purity rare earth metal based on waste residues, and belongs to the technical field of rare earth recycling devices.The recycling equipment comprises a cleaning pool and a feeding hopper fixed to one side of the top of the cleaning pool, and a material distributing assembly is arranged at the position, close to the lower portion of the feeding hopper, in the cleaning pool; a plurality of partition plates are fixedly arranged in the cleaning pool, and an inner cavity of the cleaning pool can be divided into a plurality of containing cavities through the arranged partition plates. Through cooperation of the positioning strips and the positioning grooves, the multiple material distributing units can be promoted to be laid on the horizontal plane, all the material distributing units can correspond to multiple containing cavities in the cleaning pool, and when the material distributing units move to the positions close to the bent parts, the ends, close to the rolling wheels, of the filter screens deflect downwards; according to the technical scheme, the material distributing unit is arranged in the containing cavity, so that residues in the material distributing unit can fall into the corresponding containing cavity, the reaction time in the containing cavities is different according to the different sizes of the residues, and therefore the residues can be treated in a targeted mode.

Description

Technical Field

[0001] The present invention relates to the technical field of rare earth recovery devices, and in particular to a recovery device based on recovering high-purity rare earth metals from waste slag. Background Art

[0002] Some waste residues generated during the production of rare earths contain a lot of valuable elements and usually need to be temporarily stored and then recycled for comprehensive utilization. When recycling rare earth waste, a certain amount of acid leaching solution needs to be poured into the rare earth waste to dissolve the rare earth.

[0003] Chinese invention patent CN106756041B discloses an acid pickling device for recycling and refining rare earth waste. The crushing teeth are used to initially loosen the waste, thereby speeding up the waste in subsequent processing. At the same time, the stirring blades rotate to ensure sufficient contact between the waste and the acid leaching solution, achieving the effect of mixing the rare earth waste and the acid leaching solution and increasing their dissolution rate.

[0004] The above device transports the waste through the crushing teeth and uses stirring blades to accelerate the dissolution of the rare earth waste. However, when the particle size of the rare earth waste is different, the time required for dissolution is also different, and the above structure is difficult to specifically process waste of different particle sizes.

[0005] Therefore, it is necessary to provide a recovery device based on waste slag to recover high-purity rare earth metals to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a recovery device for high-purity rare earth metals based on waste slag, so as to solve the problem that the existing device proposed in the above background technology accelerates the dissolution of rare earth waste by stirring blades, but when the particle size of the rare earth waste is different, the time required for dissolution is also different, and the existing structure is difficult to specifically process waste of different particle sizes.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a recovery device based on recovering high-purity rare earth metals from waste slag, comprising a cleaning tank and a feed funnel fixed to one side of the top of the cleaning tank, a material dividing assembly is provided inside the cleaning tank and near the position below the feed funnel, and a plurality of partitions are fixedly provided inside the cleaning tank, and the partitions can divide the inner cavity of the cleaning tank into a plurality of accommodating chambers; The material dividing assembly includes a plurality of material dividing units arranged in a vertical direction, and the material dividing unit includes a material blocking frame and a plug-in plate fixed to the bottom of the material blocking frame. Both ends of the plug-in plate slide in conjunction with the cleaning pool, and the adjacent material dividing units are matched through positioning strips, so that when a material dividing unit above moves, it can drive multiple material dividing units below to be laid out and correspond one by one to the accommodating chamber.

[0008] As a further solution of the present invention: two filter screens are symmetrically arranged on the inner side of the plug-in plate, and both filter screens are hinged to the plug-in plate. When multiple material distribution units are spread out in sequence and correspond to the accommodating chamber, the filter screens can be deflected downward.

[0009] As a further solution of the present invention: multiple installation grooves are provided inside the cleaning tank and at positions on both sides. The multiple installation grooves are arranged in sequence in the vertical direction and correspond one-to-one to the multi-component material units. Two guide bars are symmetrically arranged inside the installation groove, and the end of the plug-in board slides between the two guide bars.

[0010] As a further solution of the present invention: of the two guide bars located in the same mounting groove, the guide bar in the lower position is integrally formed with a downwardly concave curved portion, the curved portion is located at one end of the guide bar away from the feed funnel, the width of the curved portion is half the width of the guide bar and is located at the part of the guide bar close to the outside, a roller is installed at the bottom of the filter screen, the roller is rotatably set on the top of the guide bar and the roller and the curved portion are in the same vertical plane.

[0011] As a further solution of the present invention: in two adjacent groups of material units, positioning grooves are provided on both sides of the top surface of the material blocking frame located at the bottom, and the positioning strips slide in the positioning grooves and are fixedly connected to the plug board.

[0012] As a further solution of the present invention: a cover plate is provided inside the cleaning tank and near the top, and a material blocking frame located at the top is slidably matched with the cover plate.

[0013] As a further solution of the present invention: an opening is provided on one side of the top of the cover plate, and a hose is fixedly provided on the top of the opening, and the output end of the feed funnel is connected to the hose.

[0014] As a further solution of the present invention: a sealing plate is slidably fitted at the cleaning tank, and the sealing plate is located at the opening. After one blanking is completed, the cylinder installed on the cleaning tank can drive the sealing plate to close the opening.

[0015] As a further solution of the present invention, the lengths of the plurality of groups of guide strips gradually increase from bottom to top.

[0016] Compared with the prior art, the beneficial effect of the present invention is that: through the cooperation of the positioning strip and the positioning groove, multiple material distribution units can be laid out on a horizontal plane, so that each material distribution unit can correspond to multiple accommodating chambers in the cleaning tank. Specifically, when the material distribution unit moves to the vicinity of the curved portion, the roller at the bottom of the filter screen can slide into the curved portion, so that the end of the filter screen close to the roller deflects downward, so that the residue in the material distribution unit can fall into the corresponding accommodating chamber, and according to the size of the residue, the reaction time in each accommodating chamber will also be different, so that the residue can be processed in a targeted manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the opening and hose structure of the present invention; Figure 3 is a partition distribution diagram of the present invention; Figure 4 Schematic diagram of the guide bar and the bending portion structure of the present invention; Figure 5 is a distribution diagram of guide bars of the present invention; Figure 6 It is a schematic diagram of the positioning bar structure of the present invention; Figure 7 This is a schematic diagram of the cooperation between the plug board and the guide strip of the present invention; Figure 8 Schematic diagram of the position of the detection unit relative to the material distribution unit of the present invention; Figure 9 This invention Figure 8 A schematic diagram of the enlarged structure at point A; Figure 10 It is a schematic diagram of the filter structure of the present invention; Figure 11 It is a schematic diagram of the coordination between the material blocking frame and the cover plate of the present invention.

[0019] In the figure: 1. Cleaning tank; 101. Feeding funnel; 1011. Hose; 102. Agitating shaft; 2. Driving motor; 3. Closing plate; 4. Cover plate; 401. Opening; 402. Strip groove; 5. Traction rope; 6. Material blocking frame; 601. Positioning groove; 602. Block; 7. Plug-in board; 701. Positioning strip; 8. Partition; 9. Filter; 10. Guide strip; 1001. Bending part; 11. Roller; 12. Detection unit; 13. Electromagnet; 14. Optical receiver. DETAILED DESCRIPTION

[0020] like Figures 1-10As shown, a recovery device for recovering high-purity rare earth metals from waste slag includes a cleaning tank 1 and a feed funnel 101 fixed to one side of the top of the cleaning tank 1. When in use, the waste slag is transported to the feed funnel 101 by a conveyor, so that the waste slag can fall into the cleaning tank 1 through the feed funnel 101, and then the rare earth metals on the residue are dissolved by the acidic solution in the cleaning tank 1.

[0021] During the specific processing process, when the size of the residue is different, the required dissolution time will also be different. Therefore, this solution is provided with a dividing assembly inside the cleaning tank 1 and near the position below the feed funnel 101, and a plurality of partitions 8 are fixedly provided inside the cleaning tank 1. The partitions 8 are arranged to help divide the inner cavity of the cleaning tank 1 into a plurality of accommodating chambers, and the above-mentioned dividing assembly is located at the top position of the partition 8. The dividing assembly can be used to distribute residues of different particle sizes into different accommodating chambers for processing.

[0022] Reference Figure 1-Figure 5 As shown, the material distribution assembly includes multiple groups of material distribution units arranged in a vertical direction. Specifically, the material distribution unit includes a "U"-shaped material blocking frame 6 and a "U"-shaped plug-in board 7 fixed to the bottom of the material blocking frame 6. Figure 4 It can be seen that both ends of the plug-in plate 7 extend out of the blocking frame 6, so that the plug-in plate 7 can slide with the cleaning tank 1, and the adjacent two material-dividing units cooperate with each other through the positioning unit, so that when the top material-dividing unit moves, it can drive the multiple groups of material-dividing units below to move from top to bottom in sequence, and finally the multiple material-dividing units correspond to the multiple accommodating chambers in the cleaning tank 1 one by one, combined with Figure 4 、 Figure 7 As shown, two filter screens 9 are symmetrically arranged on the inner side of the plug-in plate 7, and the two filter screens 9 are hinged to the plug-in plate 7. The specific hinge position is on the side where the two filter screens 9 are away from each other. In the initial state, the two filter screens 9 are in a horizontal state, so that the residue in the material blocking frame 6 can be screened, and when multiple material distribution units are spread out in sequence, the filter screens 9 can be deflected downward, so that the residue in the multiple material distribution units can fall into the corresponding accommodating chamber.

[0023] In order to enable the filter screen 9 to deflect downward, the present invention provides a plurality of mounting grooves inside the cleaning tank 1 and at positions on both sides. The plurality of mounting grooves on one side are arranged in sequence in the vertical direction and correspond one to one with the multi-component material units. Specifically, two guide bars 10 are symmetrically arranged inside the mounting groove, and the end of the plug-in plate 7 extends between the two guide bars 10 and slides with them, thereby Figure 4 It can be seen that the lengths of the multiple installation grooves gradually increase from bottom to top. Correspondingly, the lengths of the multiple groups of guide strips 10 also gradually increase from bottom to top. Through this arrangement, multiple material distribution units can be laid out in sequence.

[0024] Furthermore, in the two guide bars 10 located in the same mounting groove, the guide bar 10 at the lower position is integrally formed with a downwardly concave curved portion 1001, and the curved portion 1001 is located at one end of the guide bar 10 away from the feed funnel 101. Figure 3 As can be seen, the width of the curved portion 1001 is half the width of the guide bar 10 and is located near the outer side of the guide bar 10. Figure 7 、 Figure 10 As shown, rollers 11 are installed at the bottom and at both ends of the filter screen 9 through brackets. The rollers 11 are rollingly arranged on the top of the guide bar 10 and the rollers 11 and the curved portion 1001 are in the same vertical plane. When the plug-in plate 7 moves in a direction away from the feed funnel 101 so that the rollers 11 coincide with the curved portion 1001, the rollers 11 can roll downward along the curved portion 1001, and the filter screen 9 deflects downward accordingly, so that the residue in the distributing unit can fall into the corresponding accommodating chamber.

[0025] Combine Figure 4-Figure 6 As shown, in two adjacent groups of material distribution units, positioning grooves 601 are provided on both sides of the top surface of the material blocking frame 6 located below, and the above-mentioned positioning unit is a positioning bar 701 sliding in the positioning groove 601, and the positioning bar 701 is fixedly connected to the plug-in plate 7 on its top. Through this structure, when the topmost material distribution unit is pulled, multiple positioning units can be gradually spread out through the cooperation of the positioning bar 701 and the positioning groove 601.

[0026] During actual use, the residue is introduced into the cleaning tank 1 through the feed funnel 101 and falls into the topmost dividing unit. Since the filter pore diameter of the filter screen 9 on each dividing unit decreases from top to bottom, residues of different sizes can be screened. When the topmost dividing unit is pulled, the cooperation of the positioning bar 701 and the positioning groove 601 can cause multiple dividing units to be laid out on the horizontal plane, so that each dividing unit can correspond to multiple containing chambers in the cleaning tank 1. Specifically, when the dividing unit moves to the vicinity of the curved portion 1001, the roller 11 at the bottom of the filter screen 9 can slide into the curved portion 1001, so that the end of the filter screen 9 close to the roller 11 deflects downward, so that the residue in the dividing unit can fall into the corresponding containing chamber, and according to the size of the residue, the reaction time in each containing chamber will also be different, so that the residue can be processed in a targeted manner.

[0027] By the above method, the residues of different particle sizes can be dispersed into different receiving chambers in a targeted manner. However, when a certain layer of the material distribution unit is in a fully loaded state, a material distribution unit located above it may still contain smaller-sized residues that have not fallen down. Therefore, as a further development of the above embodiment, the present solution sets the filter screen 9 as follows: Figure 10The shape shown in the figure can be understood as that both ends of the filter screen 9 are provided with L-shaped connecting parts, and the roller 11 is installed at the connecting part. Figure 7 、 Figure 10 As shown, the filter screen 9 of this structure can be located on the top of the lower retaining frame 6 and the bottom surface of the filter screen 9 is aligned with the top surface of the retaining frame 6, thereby preventing the residue in the distributing unit from overflowing the retaining frame 6; Further, combined with Figure 8-Figure 9 As shown, a detection unit 12 for detecting whether the material blocking frame 6 is fully loaded is provided on the inner side wall of the material blocking frame 6. Specifically, the detection unit 12 can be a photoelectric sensor or an infrared sensor. The photoelectric sensor is taken as an example for explanation here. A light emitter can be installed on one side of the material blocking frame 6 and near the top, and a light receiver 14 is correspondingly provided on the other side of the material blocking frame 6. When the material blocking frame 6 is fully loaded or there is still residue falling into the material blocking frame 6, it can be detected by this detection unit 12. The specific structure and working principle of the detection unit 12 are mature technical means and will not be elaborated here.

[0028] The top of the blocking frame 6 is provided with a groove, and the bottom end of the groove is provided with an electromagnet 13. The above-mentioned detection unit 12 is electrically connected to the electromagnet 13, and the top of the electromagnet 13 is elastically connected to a card block 602 through a spring. The card block 602 is a magnetic material, and the bottom surface of the plug-in board 7 adjacent to the card block 602 is provided with a card slot that cooperates with the card block 602. In actual use, when a certain layer of the distributing unit is full, the detection unit 12 can detect this signal and control the electromagnet 13 to be in the energized state. The electromagnet 13 has the same magnetic pole on the opposite side of the card block 602, so that the card block 602 can move upward and be inserted into the card slot, so that the fully loaded distributing unit can be engaged with the distributing unit above it and move synchronously. According to the content of the previous embodiment, it can be understood that when the topmost distributing unit is pulled, multiple distributing units can be spread out in sequence, thereby corresponding to multiple accommodating chambers, but when one of the distributing units is fully loaded, the situation is different. Here we use Figure 4-Figure 5Taking the fully loaded second-layer dividing unit as an example, when the second-layer dividing unit is fully loaded, the detection unit 12 on the second-layer dividing unit can control the block 602 to cooperate with the card slot, so that the second-layer dividing unit is engaged with the first-layer dividing unit, so that the second-layer dividing unit can be synchronously driven to move in the process of pulling the first-layer dividing unit. When the second-layer dividing unit moves to the bending portion 1001, the filter 9 on the second-layer dividing unit can be deflected downward, so that the residue in the second-layer dividing unit can fall into the corresponding holding chamber. At the same time, as the residue in the second-layer dividing unit is discharged, the small-sized residue in the first-layer dividing unit can pass through the filter 9 in the first-layer dividing unit and fall into the holding chamber. Therefore, in this way, the residues of different sizes can be dispersed to the maximum extent, thereby shortening the overall processing time of the residue.

[0029] Reference Figure 2 As shown, a cover plate 4 is further provided inside the cleaning pool 1 and near the top, and a material blocking frame 6 located at the top is slidingly matched with the cover plate 4. Specifically, an avoidance groove matched with the cover plate 4 can be opened on the inner wall of the cleaning pool 1, and the avoidance groove is in the shape of a "U", so that the cover plate 4 can move relative to the cleaning pool 1 but not separate from the cleaning pool 1. In actual use, a limit spring can be connected between the wall of the avoidance groove and the cover plate 4, so that the cover plate 4 and the cleaning pool 1 are elastically matched. An opening 401 is provided on one side of the top of the cover plate 4, and a hose 1011 is fixedly provided on the top of the opening 401. The output end of the above-mentioned feeding funnel 101 is connected to the hose 1011, so that the residue in the feeding funnel 101 can fall into the material distribution unit through the opening 401.

[0030] Further, combined Figure 11 As shown, both sides of the top surface of the material retaining frame 6 at the top are fixed with protrusions which are not shown in the figure, and the bottom surface of the cover plate 4 can be provided with a strip groove 402 which slides with the protrusion. The cross-sections of the protrusion and the strip groove 402 are both T-shaped structures. In actual use, a vibration motor is installed on the top of the cover plate 4 to drive the vibration of multiple material distribution units so that the residue can be evenly dispersed into each material distribution unit. Similarly, during the process of laying the material distribution units, the cover plate 4 can also be in a vibrating state.

[0031] In order to cooperate with the vibration of the material distribution unit, the above-mentioned guide bar 10 can be elastically matched with the cleaning tank 1. Specifically, a spring is fixed between the side of the two guide bars 10 facing away from each other and the inner wall of the installation groove, so that the guide bar 10 is elastically connected to the cleaning tank 1 in the vertical direction.

[0032] Combine Figure 1-Figure 2As shown, in order to drive the material distribution unit to move, this solution is equipped with a driving motor 2 at both ends of the cleaning tank 1, and the output end of the driving motor 2 is connected to the winding wheel, and a traction rope 5 is fixedly provided on both sides of the material blocking frame 6 at the top. The end of the traction rope 5 away from the material blocking frame 6 passes through the cleaning tank 1 and is fixedly connected to the winding wheel. When in use, the traction rope 5 on one side of the material blocking frame 6 can be reeled in by the forward rotation of the driving motor 2. Similarly, when the driving motor 2 rotates in the opposite direction, the traction rope 5 on the other side of the material blocking frame 6 can be reeled in, thereby driving the material blocking frame 6 to move left and right in the horizontal plane. When each material distribution unit moves to the corresponding accommodating chamber, the driving motor 2 can pause for a period of time, thereby providing sufficient time for the removal of the residue.

[0033] Recombination Figure 1 As shown, a sealing plate 3 is slidably fitted in the cleaning tank 1. The sealing plate 3 is L-shaped and is located at the opening 401. After one blanking is completed, the cylinder installed on the cleaning tank 1 can drive the sealing plate 3 to move toward the inside of the cleaning tank 1, thereby closing the opening 401 to prevent further blanking.

[0034] A stirring shaft 102 is provided in the cleaning tank 1. The stirring shaft 102 passes through the cleaning tank 1 and the partition 8 in the cleaning tank 1 and rotates with the two through a sealed bearing. A stirring blade is installed on the outside of the stirring shaft 102 to stir the solution in each containing chamber. Of course, a water inlet pipe and a drain pipe are connected to the position of each containing chamber on the cleaning tank 1, and a component for filtering dissolved impurities needs to be installed at the drain pipe.

Claims

1. A recycling device for recovering high-purity rare earth metals from waste slag, comprising a cleaning tank and a feed funnel fixed to one side of the top of the cleaning tank, characterized in that: A material dividing assembly is provided inside the cleaning tank and near the position below the feed funnel. A plurality of partitions are fixedly provided inside the cleaning tank, and the partitions can divide the inner cavity of the cleaning tank into a plurality of accommodating chambers; The material dividing assembly includes a plurality of material dividing units arranged in a vertical direction, and the material dividing unit includes a material blocking frame and a plug-in plate fixed to the bottom of the material blocking frame. Both ends of the plug-in plate slide in conjunction with the cleaning pool, and the adjacent material dividing units are matched through positioning strips, so that when a material dividing unit above moves, it can drive multiple material dividing units below to be laid out and correspond one by one to the accommodating chamber.

2. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 1, characterized in that: Two filter screens are symmetrically arranged on the inner side of the plug-in plate, and both filter screens are hinged to the plug-in plate. When the multiple material distribution units are spread out in sequence and correspond to the accommodating chambers, the filter screens can be deflected downward.

3. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 2, characterized in that: A plurality of mounting grooves are provided inside the cleaning tank and at positions on both sides. The plurality of mounting grooves are arranged in sequence in the vertical direction and correspond one-to-one to the multi-component material units. Two guide bars are symmetrically arranged inside the mounting grooves, and the end of the plug-in board slides between the two guide bars.

4. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 3, characterized in that: Of the two guide bars located in the same mounting groove, the guide bar in the lower position is integrally formed with a downwardly concave curved portion, the curved portion is located at one end of the guide bar away from the feed funnel, the width of the curved portion is half the width of the guide bar and is located at the part of the guide bar close to the outside, a roller is installed at the bottom of the filter screen, the roller is rotatably set on the top of the guide bar and the roller and the curved portion are in the same vertical plane.

5. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 1, characterized in that: In two adjacent groups of material units, positioning grooves are provided on both sides of the top surface of the material blocking frame located at the bottom, and the positioning strips slide in the positioning grooves and are fixedly connected to the plug-in board.

6. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 1, characterized in that: A cover plate is provided inside the cleaning pool and near the top, and a material blocking frame located at the top is slidably matched with the cover plate.

7. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 6, characterized in that: An opening is provided on one side of the top of the cover plate, and a hose is fixedly provided on the top of the opening, and the output end of the feed funnel is connected to the hose.

8. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 7, characterized in that: The cleaning pool is slidably fitted with a sealing plate, which is located at the opening. When one blanking operation is completed, the cylinder installed on the cleaning pool can drive the sealing plate to close the opening.

9. The recovery equipment for recovering high-purity rare earth metals from waste slag according to claim 3, characterized in that: The lengths of the multiple groups of guide strips gradually increase from bottom to top.

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