A rare earth extraction clarification device
Patent Information
- Application Number
- CN202611398238.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-10
- Publication Date
- 2026-10-16
AI Technical Summary
单级搅拌采用恒定高速剪切模式，料液与有机相直接进入强搅拌区域，容易形成稳定的乳化液滴，增加后续澄清分相的难度，延长分相时间，甚至出现分相不彻底的问题
[0007] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The rare earth solution mixed with the organic phase enters the fractionation mixing assembly through the extraction inlet pipe, the collector ring, and the extraction diversion pipe. Subsequently, the fractionation drive component controls the rotation of the fractionation mixing assembly, and the rotation speed of the fractionation mixing assembly increases sequentially from the outside to the inside. At this time, the rare earth solution mixed with the organic phase first enters the outer part of the fractionation mixing assembly through the extraction diversion pipe. The rotation speed of this part is lower, ensuring that the rare earth solution can be uniformly mixed with the organic phase, avoiding stable emulsification when the rare earth solution mixed with the organic phase is directly stirred. Furthermore, the fractionation mixing assembly also increases the mixing time between the rare earth solution and the organic phase, improving the extraction quality. Subsequently, the rare earth solution mixed with the organic phase flows along the fractionation mixing assembly from the outside to the inside until it contacts the stirring component. At this time, the stirring component accelerates the mixing of the rare earth solution and the organic phase.
Smart Images
Figure CN122918360A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rare earth extraction technology, and more specifically to a rare earth extraction and clarification apparatus. Background Technology
[0002] Rare earth elements are strategic key resources supporting the development of industries such as high-end manufacturing, new energy, and electronic information. Solvent extraction is the mainstream process for the separation and purification of rare earth elements due to its high separation coefficient, large processing capacity, and continuous production capability.
[0003] Currently, conventional rare earth extraction and clarification devices mainly consist of two parts: a mixing tank and a clarification tank. The mixing tank is equipped with a single stirring mechanism. After the rare earth feed solution and organic extractant are introduced into the mixing tank, the two phases are mixed and extraction mass transfer is achieved through the shearing action of the stirring paddle. The resulting emulsion is directly introduced into a horizontal flow clarification tank, where the lighter phase (organic phase) floats and the heavier phase (aqueous phase) settles due to gravity difference, and finally discharged from their respective outlets. However, the existing technology still has the following problems: Single-stage stirring employs a constant high-speed shear mode, where the liquid and organic phase directly enter the strong stirring zone, easily forming stable emulsion droplets. This increases the difficulty of subsequent clarification and phase separation, prolongs the phase separation time, and may even lead to incomplete phase separation.
[0004] Based on this, the present invention designs a rare earth extraction and clarification device to solve the above problems. Summary of the Invention
[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a rare earth extraction and clarification device.
[0006] To achieve the above objectives, the present invention provides the following technical solution: A rare earth extraction and clarification device includes a base, a multi-stage composite extraction mechanism, a clarification tank, and an automatic diversion clarification mechanism; the clarification tank is located to the right of the base. The multi-stage composite extraction mechanism is connected to the base to ensure uniform mixing of rare earth feed solution and organic extractant. The multi-stage composite extraction mechanism includes a collector ring, an extraction inlet pipe, an extraction distributor pipe, an extraction outlet pipe, a staged drive assembly, a staged mixing assembly, and a stirring assembly; the collector ring is fixedly installed on the upper end of the base. The extraction inlet pipe is connected to the collecting ring; the collecting ring is connected to the staged mixing assembly through two extraction branch pipes. The graded mixing assembly is connected to the base; The grading drive assembly is connected to the base and the grading mixing assembly; One end of the extractor tube is connected to the fractionation mixing assembly; the other end of the extractor tube is fixedly connected to the clarification tank. An automatic diversion clarification mechanism for uniformly clarifying the extracted rare earth solution is installed inside the clarification tank. Furthermore, the automatic diversion clarification mechanism includes a partition plate, a speed reduction component, a diversion component, and a secondary collection tank; the partition plate is fixedly installed at the inner bottom of the clarification tank; the partition plate divides the interior of the clarification tank into front and rear areas; The speed reduction assembly is installed on the front side of the clarifier; the flow diversion assembly is installed on the rear side of the clarifier. The secondary collection tank is fixedly installed on the left rear side of the clarification tank; a light phase outlet is provided on the upper left side of the rear end of the clarification tank; a heavy phase outlet is provided on the lower left inner wall of the clarification tank; the heavy phase outlet is connected to the secondary collection tank; a heavy phase outlet is also provided at the lower end of the secondary collection tank. Furthermore, the staged mixing assembly includes a primary mixing tank, a secondary mixing tank, a tertiary mixing tank, a reversing ring plate, a turbulence-inducing spiral blade, and a sealing cover; the primary mixing tank is fixedly installed on the upper end of the base; the sealing cover is detachably installed on the upper end of the primary mixing tank. The reversing ring plate is fixedly installed on the inner top of the sealing cover; The secondary mixing tank is rotatably installed at the bottom inside the primary mixing tank; the tertiary mixing tank is rotatably installed at the bottom inside the secondary mixing tank. Turbulence spiral blades are fixedly installed on the inner walls of the primary mixing tank, the secondary mixing tank, and the reversing ring plate. The staged drive assembly is connected to the secondary and tertiary mixing tanks; Furthermore, the turbulence-inducing spiral blades of the primary mixing tank and the reversing ring plate rotate in the opposite direction to the turbulence-inducing spiral blades of the secondary mixing tank; Furthermore, the heights of the primary, secondary, and tertiary mixing tanks decrease sequentially. Furthermore, the graded drive assembly includes a graded control motor, a synchronous transmission assembly, a drive shaft, a drive bevel gear, and a driven bevel gear; the graded control motor is fixedly mounted on the rear side of the base; the synchronous transmission assembly is mounted on the rear end of the base. The front and rear ends of the drive shaft are rotatably connected to the front and rear sides of the base. One side of the synchronous transmission assembly is connected to the output end of the graded control motor; the other side of the synchronous transmission assembly is connected to the drive shaft. Two different drive bevel gears are fixedly mounted on the drive shaft, arranged in a front-to-back configuration. Different driven bevel gears are fixedly installed at the lower ends of the secondary and tertiary mixing tanks; the front driving bevel gear meshes with the driven bevel gear at the lower end of the secondary mixing tank; the rear driving bevel gear meshes with the driven bevel gear at the lower end of the tertiary mixing tank. Furthermore, the number of teeth on the front driving bevel gear is greater than the number of teeth on the driven bevel gear at the lower end of the secondary mixing tank, and the number of teeth on the rear driving bevel gear is less than the number of teeth on the driven bevel gear at the lower end of the tertiary mixing tank. Furthermore, the diversion assembly includes a first guide ramp, a second guide ramp, a first collector U-shaped plate, and a second collector U-shaped plate; both the first collector U-shaped plate and the second collector U-shaped plate are fixedly installed at the inner bottom of the clarification tank; the first guide ramp is fixedly installed at the right end of the partition plate; and the second guide ramp is fixedly installed at the front right side of the clarification tank. The first guide ramp is aligned with the front side of the second collector U-shaped plate; The second guide ramp is aligned with the front side of the first collector U-shaped plate.
[0007] Compared with the prior art, the beneficial effects of this invention are as follows: 1. The rare earth solution mixed with the organic phase enters the fractionation mixing assembly through the extraction inlet pipe, the collector ring, and the extraction diversion pipe. Subsequently, the fractionation drive component controls the rotation of the fractionation mixing assembly, and the rotation speed of the fractionation mixing assembly increases sequentially from the outside to the inside. At this time, the rare earth solution mixed with the organic phase first enters the outer part of the fractionation mixing assembly through the extraction diversion pipe. The rotation speed of this part is lower, ensuring that the rare earth solution can be uniformly mixed with the organic phase, avoiding stable emulsification when the rare earth solution mixed with the organic phase is directly stirred. Furthermore, the fractionation mixing assembly also increases the mixing time between the rare earth solution and the organic phase, improving the extraction quality. Subsequently, the rare earth solution mixed with the organic phase flows along the fractionation mixing assembly from the outside to the inside until it contacts the stirring component. At this time, the stirring component accelerates the mixing of the rare earth solution and the organic phase. 2. The mixed emulsion enters the clarification tank through the extraction outlet pipe. At this time, the deceleration component continuously reduces the flow rate of the emulsion, causing the tiny droplets in the emulsion to collide and coalesce into larger ones. The heavy phase sinks and aggregates to form the lower continuous aqueous phase, while the light phase floats and aggregates to form the upper continuous organic phase. Subsequently, the flow separation component separates the two-phase mixture to further improve the phase separation quality. Finally, the light phase is discharged through the light phase outlet, while the heavy phase is discharged through the heavy phase outlet, thus achieving rare earth clarification. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0009] Figure 1 A three-dimensional rare earth extraction and clarification apparatus of the present invention Figure 1 ; Figure 2 This is a front view of a rare earth extraction and clarification apparatus according to the present invention; Figure 3 This is a right view of a rare earth extraction and clarification apparatus according to the present invention; Figure 4 A three-dimensional rare earth extraction and clarification apparatus of the present invention Figure 2 ; Figure 5 A partial three-dimensional view of a multi-stage composite extraction mechanism; Figure 6 A three-dimensional view of a multi-stage composite extraction mechanism with a portion cut away; Figure 7 For the automatic diversion clarification mechanism, local three-dimensional Figure 1 ; Figure 8 For the automatic diversion clarification mechanism, local three-dimensional Figure 2 .
[0010] The labels in the diagram represent: 1. Base; 2. Multi-stage composite extraction mechanism; 21. Staged control motor; 22. Synchronous transmission assembly; 23. Drive shaft; 24. Drive bevel gear; 25. Driven bevel gear; 26. First-stage stirring tank; 27. Second-stage stirring tank; 28. Third-stage stirring tank; 29. Reversing ring plate; 210. Collector ring; 211. Extraction inlet pipe; 212. Extraction diverter pipe; 213. Extraction outlet pipe; 214. Turbulent spiral blade; 21 5. Mixing control motor; 216. Mixing shaft; 217. Mixing spiral blade; 218. Sealing cover; 3. Clarification tank; 4. Automatic diversion clarification mechanism; 41. Divider plate; 42. Arc-shaped speed reduction plate; 43. First guide inclined plate; 44. Second guide inclined plate; 45. First collecting U-shaped plate; 46. Second collecting U-shaped plate; 47. Series tank; 48. Light phase outlet; 49. Heavy phase outlet; 410. Secondary collection tank. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0012] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.
[0013] In some embodiments, please refer to the accompanying drawings. Figures 1-8A rare earth extraction and clarification device includes a base 1, a multi-stage composite extraction mechanism 2, a clarification tank 3, and an automatic diversion clarification mechanism 4; the clarification tank 3 is located to the right of the base 1. The multi-stage composite extraction mechanism 2, used to ensure uniform mixing of rare earth feed liquid and organic extractant, is connected to the base 1. The multi-stage composite extraction mechanism 2 includes a collection ring 210, an extraction inlet pipe 211, an extraction diversion pipe 212, an extraction outlet pipe 213, a classification drive assembly, a classification mixing assembly, and a stirring assembly; the collection ring 210 is fixedly installed on the upper end of the base 1; the collection ring 210 has a cavity inside that allows liquid to flow. The extraction inlet pipe 211 is connected to the collecting ring 210; the collecting ring 210 is connected to the staged mixing assembly through two extraction branch pipes 212. The graded mixing assembly is connected to the base 1; The grading drive assembly is connected to the base 1 and the grading mixing assembly; One end of the extractor tube 213 is connected to the classification and mixing assembly; the other end of the extractor tube 213 is fixedly connected to the clarification tank 3. An automatic diversion clarification mechanism 4, used for uniform clarification of the extracted rare earth solution, is installed inside the clarification tank 3. The automatic diversion clarification mechanism 4 includes a partition plate 41, a speed reduction component, a diversion component, and a secondary collection tank 410; the partition plate 41 is fixedly installed at the inner bottom of the clarification tank 3; the partition plate 41 divides the interior of the clarification tank 3 into front and rear areas; The speed reduction assembly is installed on the front side of the clarifier 3; the flow diversion assembly is installed on the rear side of the clarifier 3. The secondary collection tank 410 is fixedly installed on the left rear side of the clarification tank 3; a light phase outlet 48 is provided on the upper left side of the rear end of the clarification tank 3; a heavy phase outlet 49 is provided on the lower left inner wall of the clarification tank 3; the heavy phase outlet 49 is connected to the secondary collection tank 410; a heavy phase outlet 49 is also provided at the lower end of the secondary collection tank 410. In this invention, the rare earth solution mixed with the organic phase enters the graded mixing assembly through the extraction inlet pipe 211, the collector ring 210 and the extraction diverter pipe 212. Subsequently, the graded driving assembly controls the rotation of the graded mixing assembly, and the rotation speed of the graded mixing assembly increases sequentially from the outside to the inside. At this time, the rare earth solution mixed with the organic phase first enters the outer part of the graded mixing component through the extraction split pipe 212. The rotation speed of this part is low to ensure that the rare earth solution can be uniformly mixed with the organic phase, and to avoid stable emulsification when the rare earth solution mixed with the organic phase is directly stirred. Furthermore, the graded mixing component increases the mixing time between the rare earth solution and the organic phase, thereby improving the extraction quality. Subsequently, the rare earth solution mixed with the organic phase flows from the outside to the inside along the staged mixing assembly until it comes into contact with the stirring assembly. At this point, the stirring assembly accelerates the mixing of the rare earth solution with the organic phase. The mixed emulsion enters the clarifying tank 3 through the extractor tube 213. At this time, the deceleration component continuously reduces the flow rate of the emulsion, causing the tiny droplets in the emulsion to collide and aggregate, thus increasing their size. The heavy phase sinks and aggregates to form the lower continuous aqueous phase, while the light phase floats and aggregates to form the upper continuous organic phase. The flow separation component then separates the two-phase mixture to further improve the phase separation quality. Finally, the light phase is discharged through the light phase outlet 48, while the heavy phase is discharged through the heavy phase outlet 49, thereby achieving rare earth clarification. The staged mixing assembly includes a primary mixing tank 26, a secondary mixing tank 27, a tertiary mixing tank 28, a reversing ring plate 29, a turbulence spiral blade 214, and a sealing cover 218; the primary mixing tank 26 is fixedly installed on the upper end of the base 1; the sealing cover 218 is detachably installed on the upper end of the primary mixing tank 26. The reversing ring plate 29 is fixedly installed on the inner top of the sealing cover 218; The secondary mixing tank 27 is rotatably installed at the inner bottom of the primary mixing tank 26; the tertiary mixing tank 28 is rotatably installed at the inner bottom of the secondary mixing tank 27. Among them, turbulence spiral blades 214 are fixedly installed on the inner walls of the primary mixing tank 26, the secondary mixing tank 27 and the reversing ring plate 29; and the turbulence spiral blades 214 of the primary mixing tank 26 and the reversing ring plate 29 rotate in opposite directions to the turbulence spiral blades 214 of the secondary mixing tank 27. The staged drive assembly is connected to the secondary mixing tank 27 and the tertiary mixing tank 28; The heights of the primary mixing tank 26, the secondary mixing tank 27, and the tertiary mixing tank 28 decrease sequentially. The extraction liquid pipe 213 is fixedly installed at the lower end of the base 1; one end of the extraction liquid pipe 213 is connected to the bottom of the three-stage stirring tank 28 through a rotary joint; the other end of the extraction liquid pipe 213 is connected to the clarification tank 3. The graded drive assembly includes a graded control motor 21, a synchronous transmission assembly 22, a drive shaft 23, a drive bevel gear 24, and a driven bevel gear 25; the graded control motor 21 is fixedly installed on the rear side of the base 1; the synchronous transmission assembly 22 is installed at the rear end of the base 1. The front and rear ends of the drive shaft 23 are rotatably connected to the front and rear sides of the base 1; The synchronous transmission assembly 22 adopts a synchronous belt and synchronous pulley transmission assembly; both synchronous pulleys of the synchronous transmission assembly 22 are rotatably mounted at the rear end of the base 1; one synchronous pulley is fixedly connected to the output end of the graded control motor 21; and the other synchronous pulley is fixedly connected to the drive shaft 23. Two different drive bevel gears 24 are fixedly mounted on the drive shaft 23 in a front-to-back arrangement; Different driven bevel gears 25 are fixedly installed at the lower ends of the secondary mixing tank 27 and the tertiary mixing tank 28; the front driving bevel gear 24 meshes with the driven bevel gear 25 at the lower end of the secondary mixing tank 27; the rear driving bevel gear 24 meshes with the driven bevel gear 25 at the lower end of the tertiary mixing tank 28; the module m and pressure angle α of the two pairs of driving bevel gears 24 and driven bevel gears 25 are the same. Among them, the number of teeth of the front driving bevel gear 24 is greater than the number of teeth of the driven bevel gear 25 at the lower end of the secondary mixing tank 27, and the number of teeth of the rear driving bevel gear 24 is less than the number of teeth of the driven bevel gear 25 at the lower end of the tertiary mixing tank 28. The mixing assembly includes a mixing control motor 215, a mixing shaft 216, and a mixing spiral blade 217; the mixing control motor 215 is fixedly installed on the upper end of the sealing cover 218; the mixing shaft 216 is rotatably installed on the inner top of the sealing cover 218; the output end of the mixing control motor 215 is fixedly connected to the mixing shaft 216; and the mixing spiral blade 217 is fixedly installed on the outer end of the mixing shaft 216. In this invention, the rare earth solution mixed with the organic phase first enters the primary stirring tank 26 through the extraction inlet pipe 211, the collector ring 210, and the extraction diversion pipe 212. At this time, the staged control motor 21 drives the drive shaft 23 to rotate synchronously through the synchronous transmission assembly 22, so that the two drive bevel gears 24 drive the driven bevel gears 25 meshing with them to rotate. The number of teeth of the front drive bevel gear 24 is greater than the number of teeth of the driven bevel gear 25 at the lower end of the secondary stirring tank 27, and the number of teeth of the rear drive bevel gear 24 is less than the number of teeth of the driven bevel gear 25 at the lower end of the tertiary stirring tank 28. The two drive bevel gears 24 rotate at the same speed. At this time, the driven bevel gear 25 at the lower end of the secondary stirring tank 27 decelerates, while the driven bevel gear 25 at the lower end of the tertiary stirring tank 28 accelerates, so that the speed of the secondary stirring tank 27 is lower than the speed of the tertiary stirring tank 28. At this time, the rare earth solution mixed with the organic phase first enters the first-stage stirring tank 26 through the extraction split pipe 212 and is blocked by the outer wall of the second-stage stirring tank 27. At this time, the rare earth solution will only move slowly upward along the turbulence spiral blades 214 installed on the inner wall of the first-stage stirring tank 26 under the rotation of the second-stage stirring tank 27. During the movement, it is ensured that the rare earth solution can be uniformly mixed with the organic phase, and stable emulsification phenomenon is avoided when the rare earth solution mixed with the organic phase is directly stirred. Once the rare earth solution is driven to a position higher than the upper end of the secondary stirring tank 27 by the turbulence spiral blades 214 installed on the primary stirring tank 26, it will flow downward along the turbulence spiral blades 214 installed on the inner wall of the secondary stirring tank 27 and be blocked by the reversing ring plate 29. This causes the rare earth solution to first flow downward along the outer part of the secondary stirring tank 27, and finally flow from the lower part of the reversing ring plate 29 to the inner part of the secondary stirring tank 27. As the level of the rare earth solution in the secondary stirring tank 27 rises, it will drive the rare earth solution inside the secondary stirring tank 27 to move upward along the turbulence spiral blades 214 installed on the reversing ring plate 29, thereby increasing the mixing time between the rare earth solution and the organic phase and improving the extraction quality. Finally, the rare earth solution flows from the inner part of the secondary stirring tank 27 to the interior of the tertiary stirring tank 28. At this time, the mixing control motor 215 controls the mixing shaft 216 to rotate, thereby driving the mixing spiral blade 217 to rotate. Combined with the rapid rotation of the tertiary stirring tank 28, the rare earth solution and the organic phase are mixed more thoroughly. The speed reduction assembly includes multiple arc-shaped speed reduction plates 42; the multiple arc-shaped speed reduction plates 42 are staggered and fixedly installed at the front end of the partition plate 41 and the inner wall of the front side of the clarification tank 3; The diversion assembly includes a first guide ramp 43, a second guide ramp 44, a first collector U-shaped plate 45, and a second collector U-shaped plate 46; the first collector U-shaped plate 45 and the second collector U-shaped plate 46 are both fixedly installed at the inner bottom of the clarification tank 3; the first guide ramp 43 is fixedly installed at the right end of the partition plate 41; the second guide ramp 44 is fixedly installed at the front right side of the clarification tank 3. The first guide inclined plate 43 is aligned with the front side of the second flow collecting U-shaped plate 46; The second guide inclined plate 44 is aligned with the front side of the first flow collecting U-shaped plate 45; The upper right side of the secondary collection tank 410 and the upper left side of the clarification tank 3 are both provided with series channels 47 to facilitate the flow of the light phase. A light phase outlet 48 is provided above the rear end of the secondary liquid collection tank 410; The secondary liquid collection tank 410 is provided with a baffle in the middle, which divides the secondary liquid collection tank 410 into two independent areas, upper and lower. In this invention, the mixed emulsion enters the clarification tank 3 through the extraction liquid pipe 213. At this time, multiple arc-shaped deceleration plates 42 continuously weaken the flow rate of the emulsion with a relatively fast flow rate discharged from the extraction liquid pipe 213, thereby causing the tiny droplets in the emulsion to collide and aggregate to become larger. Subsequently, the emulsion moves to the right along the clarifying tank 3 and the partition plate 41, and flows along the first guide inclined plate 43 and the second guide inclined plate 44 to the first collecting U-shaped plate 45 and the second collecting U-shaped plate 46 respectively, realizing automatic flow separation and further improving the phase separation quality. Under the action of the first collecting U-shaped plate 45 and the second collecting U-shaped plate 46, it flows to the rear area of the partition plate 41 and flows continuously to the left. During the flow, the heavy phase sinks and gathers to form the lower continuous aqueous phase; the light phase floats and gathers to form the upper continuous organic phase; while the light phase located on the left side of the first collecting U-shaped plate 45 will flow to the top of the secondary collection tank 410 through the series tank 47 and flow out through the light phase outlet 48 opened on the secondary collection tank 410. The light phase in the second collecting U-shaped plate 46 will flow out directly through the light phase outlet 48 opened on the rear side of the clarifying tank 3. The heavy phase in the first U-shaped collector plate 45 and the second U-shaped collector plate 46 will first flow into the lower area of the secondary collection tank 410 through the heavy phase outlet 49 on the clarification tank 3, and finally be discharged outward from the heavy phase outlet 49 on the secondary collection tank 410, thereby realizing rare earth diversion and clarification.
[0014] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rare earth extraction and clarification apparatus, comprising a base (1), characterized in that: It also includes a multi-stage composite extraction mechanism (2), a clarification chamber (3), and an automatic diversion clarification mechanism (4); the clarification chamber (3) is located to the right of the base (1); The multi-stage composite extraction mechanism (2) used to ensure uniform mixing of rare earth feed liquid and organic extractant is connected to the base (1); The multi-stage composite extraction mechanism (2) includes a collector ring (210), an extraction inlet pipe (211), an extraction distributor pipe (212), an extraction outlet pipe (213), a graded drive assembly, a graded mixing assembly, and a stirring assembly; the collector ring (210) is fixedly installed on the upper end of the base (1); The extraction inlet pipe (211) is connected to the collector ring (210); the collector ring (210) is connected to the staged mixing assembly through two extraction split pipes (212); The graded mixing assembly is connected to the base (1); The grading drive assembly is connected to the base (1) and the grading mixing assembly; One end of the extractor tube (213) is connected to the graded mixing assembly; the other end of the extractor tube (213) is fixedly connected to the clarification tank (3); An automatic diversion clarification mechanism (4) for uniformly clarifying the extracted rare earth solution is installed inside the clarification tank (3).
2. The rare earth extraction and clarification apparatus according to claim 1, characterized in that, The automatic diversion clarification mechanism (4) includes a partition plate (41), a speed reduction component, a diversion component, and a secondary collection tank (410); the partition plate (41) is fixedly installed at the bottom of the clarification tank (3); the partition plate (41) divides the interior of the clarification tank (3) into front and rear areas; The speed reduction assembly is installed on the front side of the clarifier (3); the flow diversion assembly is installed on the rear side of the clarifier (3); The secondary collection tank (410) is fixedly installed on the left rear side of the clarification tank (3); a light phase outlet (48) is provided on the upper left side of the rear end of the clarification tank (3); a heavy phase outlet (49) is provided on the lower left inner wall of the clarification tank (3); the heavy phase outlet (49) is connected to the secondary collection tank (410); a heavy phase outlet (49) is also provided at the lower end of the secondary collection tank (410).
3. The rare earth extraction and clarification apparatus according to claim 2, characterized in that, The staged mixing assembly includes a primary mixing tank (26), a secondary mixing tank (27), a tertiary mixing tank (28), a reversing ring plate (29), a turbulence spiral blade (214), and a sealing cover (218); the primary mixing tank (26) is fixedly installed on the upper end of the base (1); the sealing cover (218) is detachably installed on the upper end of the primary mixing tank (26); The reversing ring plate (29) is fixedly installed on the inner top of the sealing cover (218); The secondary mixing tank (27) is rotatably installed at the inner bottom of the primary mixing tank (26); the tertiary mixing tank (28) is rotatably installed at the inner bottom of the secondary mixing tank (27); Among them, the inner walls of the first-stage mixing tank (26), the second-stage mixing tank (27) and the reversing ring plate (29) are all fixedly installed with turbulence spiral blades (214). The staged drive assembly is connected to the secondary mixing tank (27) and the tertiary mixing tank (28).
4. The rare earth extraction and clarification apparatus according to claim 3, characterized in that, The turbulence spiral blades (214) of the primary mixing tank (26) and the reversing ring plate (29) rotate in the opposite direction to the turbulence spiral blades (214) of the secondary mixing tank (27).
5. The rare earth extraction and clarification apparatus according to claim 4, characterized in that, The heights of the primary mixing tank (26), the secondary mixing tank (27), and the tertiary mixing tank (28) decrease sequentially.
6. The rare earth extraction and clarification apparatus according to claim 5, characterized in that, The graded drive assembly includes a graded control motor (21), a synchronous transmission assembly (22), a drive shaft (23), a drive bevel gear (24), and a driven bevel gear (25); the graded control motor (21) is fixedly installed on the rear side of the base (1); the synchronous transmission assembly (22) is installed on the rear end of the base (1); The front and rear ends of the drive shaft (23) are rotatably connected to the front and rear sides of the base (1); One side of the synchronous transmission assembly (22) is connected to the output end of the graded control motor (21); the other side of the synchronous transmission assembly (22) is connected to the drive shaft (23); Two different drive bevel gears (24) are fixedly mounted on the drive shaft (23) in a front-to-back arrangement; Different driven bevel gears (25) are fixedly installed at the lower ends of the secondary mixing tank (27) and the tertiary mixing tank (28); the front driving bevel gear (24) meshes with the driven bevel gear (25) at the lower end of the secondary mixing tank (27); the rear driving bevel gear (24) meshes with the driven bevel gear (25) at the lower end of the tertiary mixing tank (28).
7. The rare earth extraction and clarification apparatus according to claim 6, characterized in that, The number of teeth of the front driving bevel gear (24) is greater than the number of teeth of the driven bevel gear (25) at the lower end of the secondary mixing tank (27), and the number of teeth of the rear driving bevel gear (24) is less than the number of teeth of the driven bevel gear (25) at the lower end of the tertiary mixing tank (28).
8. The rare earth extraction and clarification apparatus according to claim 7, characterized in that, The diversion assembly includes a first guide ramp (43), a second guide ramp (44), a first collector U-shaped plate (45), and a second collector U-shaped plate (46); the first collector U-shaped plate (45) and the second collector U-shaped plate (46) are both fixedly installed at the inner bottom of the clarifier (3); the first guide ramp (43) is fixedly installed at the right end of the partition plate (41); the second guide ramp (44) is fixedly installed at the front right side of the clarifier (3); The first guide ramp (43) is aligned with the front side of the second collector U-shaped plate (46); The second guide plate (44) is aligned with the front side of the first collector U-shaped plate (45).