Rare and precious metal refining and purifying device and process

Abstract

The invention belongs to the technical field of metal refining, and relates to a rare and precious metal refining and purifying device and technology.The rare and precious metal refining and purifying device comprises a raw material tank, an acid storage tank, a first reaction kettle, a filtering tank, an extraction tank and an electrolytic tank which are communicated through pipelines, a filter screen mechanism is fixed to the inner top of the filtering tank and comprises a screen cylinder, and a material collecting mechanism is rotationally installed below the filter screen mechanism; the material collecting mechanism comprises a lifting barrel, an auger is rotatably mounted in the lifting barrel, the center of the auger is connected with an output shaft of the driving motor through a main shaft, the lifting barrel is vertically fixed to the center of the net barrel and penetrates through the net barrel, and a slag discharging opening is formed in the position, located on the upper side of the net barrel, of the lifting barrel; the lifting cylinder and the auger are matched to lift waste residues to the top of the filtering tank, and then the waste residues lifted to the top are filtered and collected through the net cylinder, so that on one hand, the waste residues can be prevented from being accumulated in the filtering tank to influence the filtering effect of the filtering tank, and on the other hand, centralized treatment of the waste residues is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of metal refining, and in particular to a device and process for refining and purifying rare and precious metals. Background Art

[0002] In recent years, the demand for rare and precious metals in the domestic and foreign markets has continued to expand, while the purity of natural metal ores is difficult to meet market demand. In order to obtain high-purity rare and precious metals, the process includes raw material crushing, adding reagents for reaction, flotation, concentration, drying and dehydration, and purification of rare and precious metals. However, the existing equipment is difficult to purify, so a rare and precious metal refining and purification device has emerged to solve the problem of difficulty in purifying rare and precious metals.

[0003] A rare metal refining and purification device with a Chinese patent document announcement number of CN221544710U includes an acid storage tank, a rare metal storage tank, a second reactor, a filter, and a first reactor connected by pipelines, and is also provided with an extractor, an electrolytic cell, a drive box, a stirring structure, and a temperature adjustment structure for adjusting the temperature difference between various regions in the first reactor; the temperature adjustment structure is located in the first reactor; the first reactor, the extractor, and the electrolytic cell are connected in sequence through pipelines; the drive box is located on one side of the first reactor, and a drive structure is provided in the drive box; the stirring structure is located in the first reactor. However, this patent still has some shortcomings: after the raw materials are mixed and reacted, they enter the filter for pretreatment and impurity removal. Since the raw materials contain impurities of different masses, they are unevenly distributed during the impurity removal process, resulting in impurities that are easily concentrated and accumulated in a certain place in the filter, which not only leads to poor impurity removal effect, but also affects the filtration efficiency of the filter. Therefore, the filter needs to be disassembled and cleaned frequently, which is very inconvenient. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that impurities are easily accumulated in one place and affect the refining effect when removing impurities from raw materials during the metal refining process, the present invention provides a rare metal refining and purification device and process to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a rare metal refining and purification device, comprising a raw material tank, an acid storage tank, a first reactor, a filter tank, an extraction tank and an electrolytic cell connected by pipelines, a feed pipe is fixed on the top of the filter tank, the feed pipe is connected to the discharge end of the first reactor, a discharge pipe is fixed on the bottom of the filter tank, the discharge pipe is connected to the feed end of the extraction tank, a filter mechanism is fixed on the inner top of the filter tank, the filter mechanism comprises a mesh cylinder, the outlet end of the feed pipe is located below the mesh cylinder, a collection mechanism is rotatably installed below the filter mechanism, the collection mechanism comprises a lifting cylinder, an auger is rotatably installed in the lifting cylinder, the center of the auger is connected to the output shaft of a driving motor through a main shaft, the driving motor is fixed to the outer bottom of the filter tank, the lifting cylinder is vertically fixed to the center of the mesh cylinder and passes through the mesh cylinder, a slag discharge port is opened at the position of the lifting cylinder located on the upper side of the mesh cylinder, and an anti-sedimentation mechanism is provided on the inner bottom of the filter tank, the anti-sedimentation mechanism is used to clean the bottom of the filter tank.

[0006] Preferably, the filter mechanism also includes a scraper, a spiral material channel and a slag receiving groove. A rotating disk is fixed on the top of the main shaft, and the center of the spiral material channel is fixedly connected to the top of the rotating disk. The scraper is fixed at the feeding end of the bottom of the spiral material channel, and the scraper is fitted with the inner bottom of the mesh cylinder. The slag receiving groove is an annular groove, and the slag receiving groove is arranged on the inner top of the mesh cylinder. The outer ring of the slag receiving groove is fixedly connected to the inner ring of the mesh cylinder, and the top of the spiral material channel is slidably connected to the inner ring of the slag receiving groove and is higher than the slag receiving groove.

[0007] Preferably, a guide plate is further provided at the top of the spiral material channel, one end of the guide plate is vertically fixedly connected to the spiral material channel, the other end of the guide plate extends into the slag receiving trough, and the length of the guide plate is greater than the width of the spiral material channel.

[0008] Preferably, the material collection mechanism also includes a rotating seat, a feed ring sleeve, a collection box and a collection plate. The rotating seat is rotatably installed in the center of the filter tank and is coaxially fixedly connected to the main shaft. The upper end of the feed ring sleeve is sleeved on the bottom of the lifting cylinder and is rotatably connected to the lifting cylinder. The lower end of the feed ring sleeve is fixedly connected to the top of the rotating seat. The auger is fixed at the top center of the rotating seat. The side wall of the feed ring sleeve is provided with a slag inlet connected to the lifting cylinder. One side of the collection box is fixed to the side wall of the rotating seat and is connected to the lifting cylinder through the slag inlet. The other side of the collection box is provided with an opening. The collection plate is fixed at the opening of the collection box, and grid holes are provided on the collection plate.

[0009] Preferably, two inclined material guide blocks are provided on the side of the aggregate plate facing the open side of the aggregate box, and the two inclined material guide blocks are respectively fixed at the upper and lower ends of the aggregate plate, and the distance between the two material guide blocks gradually decreases from the outer circle of the filter tank to the inner circle of the filter tank, and the slag inlet is located between the two material guide blocks.

[0010] Preferably, the anti-sedimentation mechanism includes a wear-resistant disc, a rolling roller, a fixed ring and a spoiler rod, the fixed ring is sleeved on the rotating seat, one end of the spoiler rod is connected to the fixed ring, the top of the spoiler rod is arranged in a slope, the other end of the spoiler rod is fixed with a connecting seat, the rolling roller is rotatably installed on the connecting seat, the bottom of the rolling roller is in contact with the wear-resistant disc, and the wear-resistant disc is fixed to the bottom of the filter tank.

[0011] A rare and precious metal refining and purification process comprises the above-mentioned rare and precious metal refining and purification device, and also comprises the following steps: S1, placing crushed rare and precious metal raw materials into a raw material tank; S2, sending the rare and precious metal raw materials in the raw material tank and the solution in the acid storage tank into a first reactor through a pipeline for mixed reaction; S3, sending the reacted rare and precious metal raw materials and the mixed solution from a feed pipe into a filter tank to pre-treat and remove impurities from the rare and precious metal raw materials; S4, sending the rare and precious metal raw materials and the mixed solution after impurities removal into an extraction tank, and sending an organic solvent into the extraction tank to extract the rare and precious metals; S5, sending the extract in the extraction tank into an electrolytic cell for electrolysis, and obtaining high-purity rare and precious metals through electrolysis.

[0012] The beneficial effects of the present invention are that a filter mechanism and a material collecting mechanism are arranged in the filter tank, and the waste residue below the filter tank is lifted to the top of the filter tank through the cooperation of the lifting cylinder and the auger of the material collecting mechanism, and then the waste residue lifted to the top is filtered and collected through the mesh cylinder of the filter mechanism. On the one hand, it can prevent the waste residue from accumulating in the filter tank and affecting the filtering effect of the filter tank, and on the other hand, it is also conducive to the centralized treatment of the waste residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of a rare metal refining and purification device and process of the present invention; Figure 2 It is a structural schematic diagram of a rare metal refining and purification device and process of the present invention after the top of the filter tank is opened; Figure 3 It is a structural schematic diagram of a net cylinder of a rare metal refining and purification device and process of the present invention; Figure 4 It is a structural schematic diagram of a rotating seat of a rare metal refining and purification device and process of the present invention; Figure 5 It is a structural schematic diagram of a slag receiving tank of a rare and precious metal refining and purification device and process of the present invention; Figure 6 It is a structural schematic diagram of a material collecting plate of a rare and precious metal refining and purification device and process of the present invention; Figure 7 It is a structural schematic diagram of a wear-resistant disc of a rare metal refining and purification device and process of the present invention; Figure numerals: 1. raw material tank; 2. acid storage tank; 3. first reactor; 4. filter tank; 5. extraction tank; 6. electrolytic cell; 7. feed pipe; 8. discharge pipe; 9. mesh cylinder; 10. lifting cylinder; 11. auger; 12. drive motor; 13. slag discharge port; 14. scraper; 15. spiral material channel; 16. slag receiving trough; 17. rotating disk; 18. guide plate; 19. rotating seat; 20. feed ring sleeve; 21. collection box; 22. collection plate; 23. guide block; 24. wear-resistant disk; 25. rolling roller; 26. fixing ring; 27. spoiler rod; 28. slag feed port. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0016] like Figures 1 to 7As shown, the present invention provides an embodiment of a rare metal refining and purification device, comprising a raw material tank 1, an acid storage tank 2, a first reactor 3, a filter tank 4, an extraction tank 5 and an electrolytic cell 6 connected by pipelines, wherein the raw material tank 1, the acid storage tank 2, the first reactor 3, the extraction tank 5 and the electrolytic cell 6 are all prior arts, a feed pipe 7 is fixed on the top of the filter tank 4, the feed pipe 7 is connected to the discharge end of the first reactor 3, a discharge pipe 8 is fixed on the bottom of the filter tank 4, the discharge pipe 8 is connected to the feed end of the extraction tank 5, a filter screen mechanism is fixed on the inner top of the filter tank 4, and the filter screen mechanism includes a mesh cylinder 9 The outlet end of the feed pipe 7 is located below the mesh cylinder 9. A collecting mechanism is rotatably installed below the filter mechanism. The collecting mechanism includes a lifting cylinder 10. A screw dragon 11 is rotatably installed in the lifting cylinder 10. The center of the screw dragon 11 is connected to the output shaft of the driving motor 12 through the main shaft. The driving motor 12 is fixed to the outer bottom of the filter tank 4. The lifting cylinder 10 is vertically fixed to the center of the mesh cylinder 9 and passes through the mesh cylinder 9. The lifting cylinder 10 is located on the upper side of the mesh cylinder 9 and is provided with a slag discharge port 13. The inner bottom of the filter tank 4 is provided with an anti-sedimentation mechanism, which is used to clean the bottom of the filter tank 4.

[0017] The filter mechanism also includes a scraper 14, a spiral material channel 15 and a slag receiving groove 16. A rotating disk 17 is fixed on the top of the main shaft. The center of the spiral material channel 15 is fixedly connected to the top of the rotating disk 17. The scraper 14 is fixed at the feeding end of the bottom of the spiral material channel 15. The scraper 14 fits with the inner bottom of the mesh cylinder 9. The slag receiving groove 16 is an annular groove. The slag receiving groove 16 is arranged on the inner top of the mesh cylinder 9. The outer circle of the slag receiving groove 16 is fixedly connected to the inner circle of the mesh cylinder 9. The top of the spiral material channel 15 is slidably connected to the inner circle of the slag receiving groove 16 and is higher than the slag receiving groove 16.

[0018] A guide plate 18 is also provided at the top of the spiral material channel 15, one end of the guide plate 18 is vertically fixedly connected to the spiral material channel 15, and the other end of the guide plate 18 extends into the slag receiving trough 16. The length of the guide plate 18 is greater than the width of the spiral material channel 15, so that the guide plate can guide all waste slag at the top of the spiral material channel 15 into the slag receiving trough 16 for collection.

[0019] The working principle of the filter mechanism is: after the rare and precious metal raw materials enter the filter tank 4, the mixed liquid containing the waste slag is transported upward along the lifting cylinder 10 through the auger 11, and finally discharged into the mesh cylinder 9 from the slag discharge port 13 at the upper end of the lifting cylinder 10. At this time, the waste slag is filtered out by the mesh cylinder 9, and the rare and precious metal solution passes through the mesh cylinder 9 and falls into the filter tank 4. On the other hand, when the main shaft rotates, it will also drive the spiral channel 15 to rotate. When the spiral channel 15 rotates, the scraper 14 at the bottom can shovel up the waste slag precipitated at the bottom of the mesh cylinder 9 to clean the mesh cylinder 9 and prevent the waste slag from clogging the mesh cylinder 9 and affecting the filtering effect of the filter tank 4. Then, the waste slag is lifted to the slag receiving trough 16 above through the spiral channel 15 to collect the waste slag in a centralized manner.

[0020] The collecting mechanism also includes a rotating seat 19, a feed ring sleeve 20, a collecting box 21 and a collecting plate 22. The rotating seat 19 is rotatably installed in the center of the filter tank 4 and is coaxially fixedly connected to the main shaft. The upper end of the feed ring sleeve 20 is sleeved on the bottom of the lifting cylinder 10 and is rotatably connected to the lifting cylinder 10. The lower end of the feed ring sleeve 20 is fixedly connected to the top of the rotating seat 19. The auger 11 is fixed at the top center of the rotating seat 19. The side wall of the feed ring sleeve 20 is provided with a slag inlet 28 connected to the lifting cylinder 10. One side of the collecting box 21 is fixed to the side wall of the rotating seat 19 and is connected to the lifting cylinder 10 through the slag inlet 28. The other side of the collecting box 21 is provided with an opening. The collecting plate 22 is fixed at the opening of the collecting box 21, and grid holes are opened on the collecting plate 22.

[0021] Two inclined material guide blocks 23 are also provided on the side of the aggregate plate 22 that is open toward the aggregate box 21. The two inclined material guide blocks 23 are respectively fixed at the upper and lower ends of the aggregate plate 22. The distance between the two material guide blocks 23 gradually decreases from the outer circle of the filter tank 4 to the inner circle of the filter tank 4. The slag inlet 28 is located between the two material guide blocks 23.

[0022] The working principle of the collection mechanism is: the main shaft drives the rotating seat 19 to rotate, and the rotating seat 19 drives the collection box 21 and the collection plate 22 to rotate in the filter tank 4. During the rotation of the collection plate 22, on the one hand, it can stir the liquid in the filter tank 4 to prevent the waste residue from settling downward. On the other hand, when the collection plate 22 moves, the waste residue is blocked by the collection plate 22, and the mixed liquid can pass through the collection plate 22 smoothly. Therefore, the waste residue in the mixed liquid can be collected and the waste residue can flow into the lifting cylinder 10 with part of the mixed liquid through the guide block 23. Finally, the waste residue is transported upward to the mesh cylinder 9 for filtration through the auger 11. The collection plate 22 realizes the initial filtration of the waste residue, and when the collection plate 22 rotates, the mixed liquid in the filter tank 4 can also flush the collection plate 22 to prevent excessive waste residue from accumulating on the surface of the collection plate 22.

[0023] The anti-sedimentation mechanism includes a wear-resistant disc 24, a rolling roller 25, a fixed ring 26 and a spoiler rod 27. The fixed ring 26 is sleeved on the rotating seat 19. One end of the spoiler rod 27 is connected to the fixed ring 26. The top of the spoiler rod 27 is arranged in a slope. The other end of the spoiler rod 27 is fixed with a connecting seat. The rolling roller 25 is rotatably installed on the connecting seat. The bottom of the rolling roller 25 is in contact with the wear-resistant disc 24, and the wear-resistant disc 24 is fixed to the bottom of the filter tank 4.

[0024] When some large pieces of waste slag enter the filter tank 4, stirring the liquid only by the collecting plate 22 cannot drive the large pieces of waste slag to float up, so the large pieces of waste slag will settle at the bottom of the filter tank 4. At this time, the fixed ring 26, the spoiler rod 27 and the rolling roller 25 are driven to move by the rotating seat 19, and the large pieces of waste slag are crushed by the rolling roller 25. When the spoiler rod 27 rotates, it pushes the liquid upward through its top slope, and then the crushed fine waste slag moves upward with the liquid, and finally the waste slag is collected by the collecting plate 22 and the collecting box 21.

[0025] A rare and precious metal refining and purification process includes the above-mentioned rare and precious metal refining and purification device, and also includes the following steps: S1, placing crushed rare and precious metal raw materials into a raw material tank 1; S2, sending the rare and precious metal raw materials in the raw material tank 1 and the solution in the acid storage tank 2 into a first reaction kettle 3 through a pipeline for mixed reaction; S3, sending the reacted rare and precious metal raw materials and the mixed solution from a feed pipe 7 into a filter tank 4 to pre-treat and remove impurities from the rare and precious metal raw materials; S4, sending the rare and precious metal raw materials and the mixed solution after impurities removal into an extraction tank 5, and sending an organic solvent into the extraction tank 5 to extract the rare and precious metals; S5, sending the extract in the extraction tank 5 into an electrolytic cell 6 for electrolysis, and obtaining high-purity rare and precious metals through electrolysis.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A rare metal refining and purification device, comprising a raw material tank (1), an acid storage tank (2), a first reaction kettle (3), a filter tank (4), an extraction tank (5) and an electrolytic cell (6) connected by pipelines, a feed pipe (7) being fixed on the top of the filter tank (4), the feed pipe (7) being connected to the discharge end of the first reaction kettle (3), a discharge pipe (8) being fixed on the bottom of the filter tank (4), the discharge pipe (8) being connected to the feed end of the extraction tank (5), characterized in that: A filter mechanism is fixed to the inner top of the filter tank (4), the filter mechanism comprising a mesh cylinder (9), the outlet end of the feed pipe (7) is located below the mesh cylinder (9), a material collection mechanism is rotatably installed below the filter mechanism, the material collection mechanism comprises a lifting cylinder (10), an auger (11) is rotatably installed in the lifting cylinder (10), the center of the auger (11) is connected to the output shaft of a drive motor (12) through a main shaft, the drive motor (12) is fixed to the outer bottom of the filter tank (4), the lifting cylinder (10) is vertically fixed to the center of the mesh cylinder (9) and passes through the mesh cylinder (9), a slag discharge port (13) is provided at a position of the lifting cylinder (10) located above the mesh cylinder (9), and an anti-sedimentation mechanism is provided at the inner bottom of the filter tank (4), the anti-sedimentation mechanism is used to clean the bottom of the filter tank (4).

2. The device for refining and purifying rare and precious metals according to claim 1, characterized in that: The filter mechanism further comprises a scraper (14), a spiral material channel (15) and a slag receiving groove (16); a rotating disk (17) is fixed to the top of the main shaft; the center of the spiral material channel (15) is fixedly connected to the top of the rotating disk (17); the scraper (14) is fixed at the feeding end at the bottom of the spiral material channel (15); the scraper (14) is fitted with the inner bottom of the mesh cylinder (9); the slag receiving groove (16) is an annular groove; the slag receiving groove (16) is arranged at the inner top of the mesh cylinder (9); the outer ring of the slag receiving groove (16) is fixedly connected to the inner ring of the mesh cylinder (9); the top of the spiral material channel (15) is slidably connected to the inner ring of the slag receiving groove (16) and is higher than the slag receiving groove (16).

3. The device for refining and purifying rare and precious metals according to claim 2, characterized in that: A material guide plate (18) is also provided at the top end of the spiral material channel (15), one end of the material guide plate (18) is vertically fixedly connected to the spiral material channel (15), the other end of the material guide plate (18) extends into the slag receiving trough (16), and the length of the material guide plate (18) is greater than the width of the spiral material channel (15).

4. The device for refining and purifying rare and precious metals according to claim 3, characterized in that: The material collecting mechanism further comprises a rotating seat (19), a feeding ring sleeve (20), a collecting box (21) and a collecting plate (22); the rotating seat (19) is rotatably mounted at the center of the filter tank (4) and is coaxially fixedly connected to the main shaft; the upper end of the feeding ring sleeve (20) is sleeved on the bottom of the lifting cylinder (10) and is rotatably connected to the lifting cylinder (10); the lower end of the feeding ring sleeve (20) is fixedly connected to the top of the rotating seat (19); the auger (11) is fixedly mounted on the bottom of the lifting cylinder (10); At the top center of the rotating seat (19), the side wall of the feed ring sleeve (20) is provided with a slag inlet (28) connected to the lifting cylinder (10); one side of the collection box (21) is fixed to the side wall of the rotating seat (19) and is connected to the lifting cylinder (10) through the slag inlet (28); the other side of the collection box (21) is provided with an opening; the collection plate (22) is fixed at the opening of the collection box (21); and grid holes are provided on the collection plate (22).

5. The device for refining and purifying rare and precious metals according to claim 4, characterized in that: Two inclined material guide blocks (23) are also provided on the side of the collecting plate (22) that is open toward the collecting box (21); the two inclined material guide blocks (23) are respectively fixed at the upper and lower ends of the collecting plate (22); the distance between the two material guide blocks (23) gradually decreases from the outer circle of the filter tank (4) to the inner circle of the filter tank (4); and the slag inlet (28) is located between the two material guide blocks (23).

6. The device for refining and purifying rare and precious metals according to claim 5, characterized in that: The anti-sedimentation mechanism comprises a wear-resistant disc (24), a rolling roller (25), a fixing ring (26) and a spoiler rod (27); the fixing ring (26) is sleeved on the rotating seat (19); one end of the spoiler rod (27) is connected to the fixing ring (26); the top of the spoiler rod (27) is arranged in a slope; the other end of the spoiler rod (27) is fixed with a connecting seat; the rolling roller (25) is rotatably mounted on the connecting seat; the bottom of the rolling roller (25) is in contact with the wear-resistant disc (24); and the wear-resistant disc (24) is fixed to the bottom of the filter tank (4).

7. A rare metal refining and purification process, characterized in that: The device for refining and purifying rare and precious metals according to any one of claims 5 to 6 further comprises the following steps: S1, placing the crushed rare and precious metal raw materials into a raw material tank (1); S2, sending the rare metal raw materials in the raw material tank (1) and the solution in the acid storage tank (2) into the first reaction kettle (3) through a pipeline for mixed reaction; S3, feeding the reacted precious metal raw materials and the mixed liquid from the feed pipe (7) into the filter tank (4), and pre-treating the precious metal raw materials to remove impurities; S4, sending the rare and precious metal raw materials and the mixed liquid after impurities removal into the extraction tank (5), and sending an organic solvent into the extraction tank (5) to extract the rare and precious metals; S5. The extract in the extraction tank (5) is sent to the electrolytic cell (6) for electrolysis, and high-purity rare and precious metals are obtained through electrolysis.

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