Extraction device for recycling rare earth tailings

Abstract

The invention relates to the technical field of rare earth tailing recovery treatment, in particular to an extraction device for rare earth tailing recovery, which comprises a bottom plate, a rack, a treatment tank, a feeding tank, a recovery tank, an arc-shaped plate, a separation plate, a discharge pipe, a mounting table, a crushing assembly, a discharge hopper, a material distribution assembly and the like, a feeding groove is formed in the right side in the treatment groove, a recycling groove is formed in the left side of the rack, an arc-shaped plate is arranged between the upper portions of the front side wall and the rear side wall in the treatment groove, and the right side of the arc-shaped plate is connected with the left side wall of the feeding groove. According to the device, deep impurity stripping and target mineral enrichment are achieved through cooperation of multiple assemblies, and the crushing assemblies are used for precisely and finely crushing tailings through cooperation of high-speed rotating crushing hammers and arc-shaped separation nets.

Description

Technical Field

[0001] This invention relates to the field of rare earth tailings recycling and treatment technology, and in particular to an extraction device for rare earth tailings recycling. Background Technology

[0002] Rare earth elements are strategically scarce resources, and their tailings still contain a certain amount of magnetic rare earth minerals and associated valuable metals, which have high recycling value. However, after preliminary crushing and screening, rare earth tailings still contain a large amount of dust, light impurities, and soil particles. These impurities adhere to the tailings particles, directly affecting the subsequent extraction efficiency. Traditional recycling processes often use single crushing or gravity separation to process the tailings, which is difficult to effectively separate impurities from the target minerals, resulting in low recovery rates of magnetic rare earth minerals and serious resource waste.

[0003] Meanwhile, existing tailings extraction devices often lack a continuous pretreatment and sorting co-design. Although some devices include rinsing or stirring stages, they cannot achieve sufficient mixing and separation of tailings and water. Furthermore, material conveying before magnetic separation is prone to problems such as particle deposition and uneven distribution, further reducing the accuracy of magnetic separation. Therefore, there is an urgent need to develop an extraction device for rare earth tailings recovery that can enhance solid-liquid mixing and separation as well as precise magnetic separation, in order to improve resource recovery efficiency and reduce environmental impact. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an extraction device for rare earth tailings recovery.

[0005] Technical Solution: An extraction device for rare earth tailings recycling includes a base plate, a frame, a processing tank, a feed tank, a recovery tank, an arc-shaped plate, a partition plate, a discharge pipe, a mounting platform, a crushing component, a discharge hopper, a separating component, a mixing component, an opening and closing component, and a flushing component. A frame is mounted on the top left side of the base plate, and a processing tank is mounted on the frame. A feed tank is located on the right side of the processing tank, and a recovery tank is located on the left side of the frame. An arc-shaped plate is positioned between the upper parts of the front and rear side walls of the processing tank. The right side of the arc-shaped plate connects to the left side wall of the feed tank, and the left side connects to the right side wall of the processing tank, forming two sections within the processing tank. Magnetic separators are mounted on bearing seats located at the front and rear of the top of the frame. A motor for driving the magnetic separators is mounted on the frame. The central axis of the magnetic separators coincides with the central axis of the arc-shaped plate. Rectangular holes are formed on both the left and right sides of the arc-shaped plate. The rectangular hole on the left is higher than the one on the right. Isolation plates are installed on the lower part of the front and rear side walls of the treatment tank. The left side of the isolation plate is flush with the right edge of the rectangular hole on the left side of the arc plate and sealed. The right side of the isolation plate is connected to the left side wall of the feed trough. The discharge pipes are symmetrically arranged at the bottom center of the isolation plate and pass through the bottom of the treatment tank. An installation platform is set on the top left of the bottom plate. A crushing component capable of crushing rare earth tailings is set on the installation platform. A discharge hopper for conveying the crushed tailings is set below the crushing component. The outlet end of the discharge hopper is connected to the feed trough. A material distribution component capable of intermittent feeding is set on the discharge hopper. A mixing component capable of fully mixing the tailings is set on the feed trough. An opening and closing component for intermittent feeding is set in the lower part of the feed trough. A washing component for tilting and washing the magnetic separator is installed on the recovery tank.

[0006] Optionally, the crushing assembly includes a crushing box, a rotating shaft, fixed discs, mounting shafts, breaker hammers, and an arc-shaped isolation net. The crushing box is mounted on the top of the mounting platform. A rotating shaft is rotatably mounted between the front and rear side walls of the crushing box. Fixed discs are spaced apart on the rotating shaft located inside the crushing box. Four mounting shafts are eccentrically and circumferentially mounted between adjacent fixed discs. Each mounting shaft is equipped with a breaker hammer. A motor for driving the rotating shaft to rotate is mounted on the rear side of the crushing box. An arc-shaped isolation net is mounted in the lower part of the crushing box, and the axis of the arc-shaped isolation net coincides with the axis of the rotating shaft.

[0007] Optionally, the material distribution assembly includes a partition, a rotating shaft, a material distribution wheel, a rotary motor, and a vibrator. A partition is vertically arranged on the upper left side of the discharge hopper, and a rotating shaft is symmetrically arranged on the left side of the bottom of the discharge hopper. A material distribution wheel is arranged on the rotating shaft. A rectangular hole is opened on the discharge hopper, and the material distribution wheel is located in the rectangular hole and fits against the side wall of the rectangular hole of the discharge hopper. A rotary motor is arranged on the rear side wall of the discharge hopper, and the output shaft of the rotary motor is connected to the rotating shaft. A vibrator is arranged on the side wall of the discharge hopper.

[0008] Optionally, the mixing assembly includes a first water pump, a main pipe, a first spray pipe, U-shaped nozzles, strip nozzles, and a mixer. The first water pump is located on the front top of the base plate near the feed trough. The outlet of the first water pump is connected to the main pipe. The first spray pipe is installed on the right side wall of the feed trough and is connected to the main pipe through a pipe. U-shaped nozzles are spaced apart on the first spray pipe, with the nozzles facing the discharge end of the discharge hopper. Strip nozzles are located on the top left side of the feed trough, with nozzles spaced apart at the bottom. A mixer is rotatably installed inside the feed trough, and a motor for driving the mixer to rotate is installed on the rear side wall of the feed trough.

[0009] Optionally, the opening and closing assembly includes an electric push rod, a moving rod, a baffle plate, and a connecting rod. Electric push rods are provided on the front sidewall of the feed trough, and a moving rod is provided between the push rods of two electric push rods. Slide grooves are symmetrically arranged at the bottom of the feed trough. The baffle plate is slidably mounted on the slide groove by a slider. A rectangular discharge hole is opened on the left side of the bottom of the feed trough. The baffle plate cooperates with the rectangular discharge hole. The baffle plate is connected to the moving rod by a connecting rod.

[0010] Optionally, the flushing assembly includes a second water pump, a second nozzle, and flushing nozzles. The second water pump is located at the front left side of the top of the base plate, and the second nozzle is installed on the recovery tank. The outlet of the second water pump is connected to the second nozzle, and flushing nozzles are arranged at intervals and inclined upwards on the second nozzle.

[0011] Optionally, it also includes a mixing component. The mixing component is provided at the bottom of the treatment tank. The mixing component includes an agitator impeller, a pulley, and a flat belt. The agitator impeller is symmetrically rotated in the lower part of the treatment tank. The agitator impeller is located at two corners of the treatment tank. A pulley is provided at the rear end of each agitator impeller. A pulley is provided at the rear end of the magnetic separator. A flat belt is wound between the three pulleys.

[0012] Optionally, it also includes an air pump, an air inlet pipe, a filter, and an air outlet pipe. An air pump is installed on the front side of the crushing box. The air inlet end of the air pump is connected to an air inlet pipe. A filter is installed on the air inlet pipe. The air outlet end of the air pump is connected to an air outlet pipe. The air outlet pipe passes through the side wall of the crushing box and faces the arc-shaped isolation net.

[0013] The present invention has the following advantages: 1. This device achieves deep impurity stripping and target mineral enrichment through multi-component collaboration: The crushing component uses a high-speed rotating crusher in conjunction with an arc-shaped isolation screen to precisely and finely crush the tailings, while an air pump intermittently flushes the filter screen through the air outlet pipe to prevent clogging and ensure continuous crushing; the material distribution component uses a vibrator to prevent sedimentation and a material distribution wheel to quantitatively feed the material, preventing tailings accumulation; the mixing component uses shaped nozzles to impact and drop tailings, strip nozzles to assist in rinsing, and a mixer to thoroughly mix the tailings with water, completely stripping away light impurities. This multi-stage collaboration significantly reduces the interference of impurities on subsequent extraction, resulting in a significantly higher recovery rate of magnetic rare earth minerals compared to traditional processes, reducing resource waste.

[0014] 2. This device achieves continuous pretreatment and sorting processes through integrated collaborative design: the opening and closing assembly uses an electric push rod to control the intermittent feeding of the baffle plate, which, combined with the upper and lower partitions of the processing tank and the arc-shaped plate structure, ensures that the tailings mixture enters the magnetic separation area in an orderly manner; in the mixing assembly, the stirring impeller rotates under the drive of the magnetic separator wheel, preventing the mixture from settling at the bottom of the processing tank and ensuring uniform material distribution; the rinsing assembly's inclined flushing nozzles precisely impact the surface of the magnetic separator wheel, causing magnetic particles to detach efficiently and fall into the recovery tank, improving magnetic separation accuracy. The entire device achieves seamless collaboration between crushing, mixing, and magnetic separation, avoiding uneven sedimentation during material transport, not only improving resource recovery and utilization rates but also reducing the environmental impact of tailings wastewater, meeting the needs of continuous industrial production. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0017] Figure 3 This is a partial cross-sectional view of the crushing component of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the material distribution wheel of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the opening and closing component of the present invention.

[0020] Figure 6 This is a schematic diagram of the installation structure of the opening and closing component of the present invention.

[0021] Figure 7 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0022] Component names and numbers in the diagram: 1. Base plate, 2. Frame, 3. Processing tank, 31. Magnetic separator, 4. Feed trough, 5. Recovery trough, 6. Arc-shaped plate, 7. Rectangular hole, 8. Isolation plate, 9. Discharge pipe, 10. Mounting platform, 11. Crushing assembly, 111. Crushing box, 112. Rotating shaft, 113. Fixed plate, 114. Mounting shaft, 115. Crusher hammer, 116. Arc-shaped isolation net, 12. Discharge hopper, 13. Material distribution assembly, 131. Partition plate, 132. Rotating shaft, 133. Material distribution wheel, 134. Rotary motor, 135. Vibrator, 14. Mixing assembly Components: 141_First water pump, 142_Main pipe, 143_First nozzle, 144_U-shaped nozzle, 145_Strip nozzle, 146_Agitator, 15_Opening and closing assembly, 151_Electric push rod, 152_Moving rod, 153_Chutter, 154_Baffle plate, 155_Connecting rod, 16_Rinsing assembly, 161_Second water pump, 162_Second nozzle, 163_Scrubbing nozzle, 17_Mixing assembly, 171_Agitator impeller, 172_Pulley, 173_Flat belt, 18_Air pump, 19_Air inlet pipe, 20_Filter, 21_Air outlet pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0024] Example 1: As Figures 1-4As shown, an extraction device for rare earth tailings recycling includes a base plate 1, a frame 2, a processing tank 3, a feed trough 4, a recovery trough 5, an arc-shaped plate 6, a partition plate 8, a discharge pipe 9, a mounting platform 10, a crushing component 11, a discharge hopper 12, a material distribution component 13, a mixing component 14, an opening and closing component 15, and a flushing component 16. A frame 2 is mounted on the top left side of the base plate 1, and a processing tank 3 is mounted on the frame 2. A feed trough 4 is located on the right side of the processing tank 3, and a recovery trough 5 is located on the left side of the frame 2. An arc-shaped plate 6 is positioned between the upper parts of the front and rear side walls of the processing tank 3. The right side of the arc-shaped plate 6 connects to the left side wall of the feed trough 4, and the left side connects to the right side wall of the processing tank 3, forming two sections within the processing tank 3. Magnetic separators are mounted on bearing seats located at the front and rear of the top of the frame 2. 31. A motor for driving the magnetic separator 31 to rotate is installed on the frame 2. The central axis of the magnetic separator 31 coincides with the central axis of the arc plate 6. Rectangular holes 7 are opened on the left and right sides of the arc plate 6, with the left rectangular hole 7 being higher than the right. Isolation plates 8 are installed on the lower part of the front and rear side walls of the processing tank 3. The left side of the isolation plate 8 is flush with the right edge of the rectangular hole 7 on the left side of the arc plate 6 and sealed. The right side of the isolation plate 8 is connected to the left side wall of the feed trough 4. A discharge pipe 9 is symmetrically arranged at the bottom center of the isolation plate 8, penetrating the bottom of the processing tank 3. An installation platform 10 is installed on the top left side of the bottom plate 1. A crushing assembly 11 capable of crushing rare earth tailings is installed on the installation platform 10. The crushing assembly 11 includes a crushing box 111, a rotating shaft 112, and a fixed plate 113. The crushing assembly 10 includes a crushing box 111 on top of a mounting platform 10. A rotating shaft 112 is rotatably mounted between the front and rear side walls of the crushing box 111. Fixed discs 113 are spaced apart on the rotating shaft 112 inside the crushing box 111. Four mounting shafts 114 are eccentrically and circumferentially arranged between adjacent fixed discs 113. Each mounting shaft 114 is equipped with a crushing hammer 115. A motor for driving the rotating shaft 112 is located at the rear of the crushing box 111. An arc-shaped isolation net 116 is located in the lower part of the crushing box 111, with the axis of the arc-shaped isolation net 116 coinciding with the axis of the rotating shaft 112. A discharge hopper 12 for conveying the crushed tailings is located at the lower part of the crushing assembly 11. The outlet of the discharge hopper 12... The discharge hopper 12 is connected to the feed chute 4. A feeding distribution assembly 13 is provided on the discharge hopper 12, capable of intermittent feeding. The feeding distribution assembly 13 includes a partition 131, a rotating shaft 132, a feeding wheel 133, a rotary motor 134, and a vibrator 135. A partition 131 is vertically arranged on the upper left side of the discharge hopper 12. A rotating shaft 132 is symmetrically arranged on the lower left side of the discharge hopper 12, rotating back and forth. A feeding wheel 133 is mounted on the rotating shaft 132. A rectangular hole 7 is opened on the discharge hopper 12. The feeding wheel 133 is located inside the rectangular hole 7 and fits against the side wall of the rectangular hole 7 of the discharge hopper 12. A rotary motor 134 is provided on the rear side wall of the discharge hopper 12. The output shaft of the rotary motor 134 is connected to the rotating shaft 132. A vibrator 135 is provided on the side wall of the discharge hopper 12, with a vibration frequency of 30-50Hz.The feed trough 4 is equipped with a mixing component 14 capable of thoroughly mixing the tailings. An opening and closing component 15 for intermittent feeding is located in the lower part of the feed trough 4. The recovery trough 5 is equipped with a washing component 16 for tilting and rinsing the magnetic separator 31.

[0025] like Figure 1 , Figure 3 and Figure 4 As shown, the mixing assembly 14 includes a first water pump 141, a main pipe 142, a first spray pipe 143, a U-shaped nozzle 144, a strip nozzle 145, and a mixer 146. The first water pump 141 is located on the front side of the top of the base plate 1 near the feed trough 4. The outlet of the first water pump 141 is connected to the main pipe 142. The first spray pipe 143 is installed on the right side wall of the feed trough 4. The first spray pipe 143 is connected to the main pipe 142 through a pipe. U-shaped nozzles 144 are spaced apart on the first spray pipe 143. The spray nozzles of the U-shaped nozzles 144 are facing the discharge end of the discharge hopper 12. A strip nozzle 145 is located on the top left side of the feed trough 4. The bottom of the strip nozzle 145 is spaced apart with spray nozzles. The mixer 146 is rotatably installed inside the feed trough 4. A motor for driving the mixer 146 to rotate is installed on the rear side wall of the feed trough 4.

[0026] like Figure 1 , Figure 5 and Figure 6 As shown, the opening and closing assembly 15 includes an electric push rod 151, a moving rod 152, a baffle plate 154, and a connecting rod 155. Electric push rods 151 are provided on the front sidewall of the feeding trough 4. A moving rod 152 is provided between the push rods of the two electric push rods 151. Sliding grooves 153 are symmetrically arranged at the bottom of the feeding trough 4. The baffle plate 154 is slidably arranged on the sliding groove 153 by a slider. A rectangular discharge hole is opened on the left side of the bottom of the feeding trough 4. The baffle plate 154 cooperates with the rectangular discharge hole. The baffle plate 154 is connected to the moving rod 152 by the connecting rod 155.

[0027] like Figure 1 and Figure 5 As shown, the flushing assembly 16 includes a second water pump 161, a second nozzle 162, and flushing nozzles 163. The second water pump 161 is located on the front left side of the top of the base plate 1, and the second nozzle 162 is installed on the recovery tank 5. The water outlet of the second water pump 161 is connected to the second nozzle 162, and flushing nozzles 163 are arranged at intervals and inclined upwards on the second nozzle 162.

[0028] When this device is needed, the operator pours the rare earth tailings waste into the feed inlet of the crushing box 111, then starts the motor on the crushing box 111. The motor drives the rotating shaft 112 to rotate via the pulley 172 set. The rotating shaft 112 drives the fixed disk 113 to rotate at high speed, which in turn causes the crushing hammer 115 on the mounting shaft 114 to swing at high speed, thereby hammering the tailings falling onto the arc-shaped isolation net 116, turning them into fine tailings powder. This powder then falls through the arc-shaped isolation net 116 into the discharge hopper 12 below. The vibrator 135 operates, causing the discharge hopper 12 to vibrate. The tailings powder slides to the left, and the baffle 131 blocks the material, allowing the groove of the distribution wheel 133 to be filled with tailings powder. When the rotating motor 115 rotates, the crushing hammer 115 on the mounting shaft 114 swings at high speed, thereby hammering the tailings powder falling onto the arc-shaped isolation net 116. 34. The counterclockwise rotation drives the distribution wheel 133 to rotate. The baffle 131 scrapes off excess tailings powder. The distribution wheel 133 pours the tailings powder into the left side of the discharge hopper 12 and then into the feed trough 4. The first water pump 141 is connected to an external water pipe. The first water pump 141 pumps water through the main pipe 142 into the first spray pipe 143 and the strip nozzle 145. The strip nozzle 145 sprays directly downwards. The first spray pipe 143, through the U-shaped nozzle 144, rapidly impacts the tailings powder flowing into the feed trough 4 from the discharge hopper 12. The tailings powder and water are fully combined and mixed. The motor drives the agitator 146 to rotate, further mixing the tailings mixture in the feed trough 4. The electric push rod 1 is activated. 51 drives the moving rod 152 to move to the right, which in turn drives the baffle plate 154 to separate from the rectangular discharge hole through the connecting rod 155. The mixture then flows into the area of ​​the processing tank 3 and the isolation plate 8. After the mixture in the feed trough 4 is discharged, the electric push rod 151 is activated to reset, and the isolation plate 8 covers and seals the rectangular discharge hole again, impacting and mixing the newly introduced feed trough 4. The mixed liquid is then injected again into the area of ​​the processing tank 3 and the isolation plate 8. When the mixture in the area of ​​the processing tank 3 and the isolation plate 8 overflows the rectangular hole 7 on the left side of the arc plate 6 and fills the upper area of ​​the arc plate 6, the magnetic field area in the magnetic separator 31 is located directly below, and the motor drives the magnetic separator 31 to rotate counterclockwise. As the magnetic cylinder rotates, the magnetic particles are adsorbed onto its surface. The cylinder rotates counterclockwise to the upper left, disengaging from the magnetic separation area. The second water pump 161 pumps water from the external water pipe into the second spray nozzle 162. The water is sprayed and impacted by the flushing nozzle 163, causing the magnetic particles to fall from the surface of the magnetic cylinder into the recovery tank 5. Finally, the particles enter the next extraction and recovery process. The liquid magnetic particles adsorbed by the curved plate 6 rise and flow out through the rectangular hole 7 on the right side of the curved plate 6, entering the area between the isolation plate 8 and the curved plate 6. Then, it flows out through the discharge pipe 9 and enters the next waste liquid treatment equipment for processing. This device can achieve continuous pretreatment, which is beneficial to the effective extraction of magnetic particles.

[0029] Example 2: As Figure 1 , Figure 2 and Figure 7As shown, based on Embodiment 1, a mixing component 17 is also included. The mixing component 17 is provided at the lower part of the treatment tank 3. The mixing component 17 includes an impeller 171, a pulley 172, and a flat belt 173. The impeller 171 is symmetrically arranged in a rotating manner at the lower part of the treatment tank 3. The impeller 171 is located at two corners of the treatment tank 3. The rear end of each impeller 171 is provided with a pulley 172. The rear end of the magnetic separator 31 is also provided with a pulley 172. A flat belt 173 is wound between the three pulleys 172. The diameters of the three pulleys 172 are as follows: 100mm at the magnetic separator end pulley 172, 50mm at the impeller end pulley 172, and the flat belt 173 is model A-500. The tension is controlled by the adjusting bolt of the bearing seat. The rotation of the magnetic separator 31 drives the pulley 172 to rotate, and the flat belt 173 drives the other two pulleys 172 to rotate. The impeller 171 moves to prevent the mixture from settling at the bottom of the treatment tank 3.

[0030] like Figure 1 As shown, it also includes an air pump 18, an air inlet pipe 19, a filter 20, and an air outlet pipe 21. An air pump 18 is installed on the front side of the crushing box 111. The air inlet end of the air pump 18 is connected to the air inlet pipe 19, and a filter 20 is installed on the air inlet pipe 19. The air outlet end of the air pump 18 is connected to the air outlet pipe 21, which has a diameter of DN20. The air outlet pipe 21 penetrates the side wall of the crushing box 111 and faces the arc-shaped isolation net 116. A pressure sensor is installed on the arc-shaped isolation net 116. The outer side of the crushing box 111... Equipped with a controller, the air pump 18 operates intermittently, filtering external gas through the filter 20 before drawing it in, and then spraying it out through the air outlet 21 to intermittently flush the bottom of the arc-shaped isolation net 116, preventing the arc-shaped isolation net 116 from becoming clogged. The pressure sensor is set with a threshold: when the pressure at the bottom of the arc-shaped isolation net is detected to be >0.3MPa, the controller 233 controls the air pump 18 to work, continuously flushing for 3-5 seconds; when the pressure is <0.1MPa, the flushing interval is extended to 60-90 seconds.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An extraction device for rare earth tailings recovery, characterized in that, The system includes a base plate (1), a frame (2) on the top left side of the base plate (1), a processing tank (3) on the frame (2), a feeding trough (4) on the right side of the processing tank (3), a recycling trough (5) on the left side of the frame (2), and an arc-shaped plate (6) between the upper parts of the front and rear side walls of the processing tank (3). The right side of the arc-shaped plate (6) is connected to the left side wall of the feeding trough (4), and the left side of the arc-shaped plate (6) is connected to the right side wall of the processing tank (3). The machine forms two sections, upper and lower. Magnetic separators (31) are installed on bearing seats at the front and rear of the top of the frame (2). A motor for driving the magnetic separators (31) to rotate is provided on the frame (2). The central axis of the magnetic separators (31) coincides with the central axis of the arc plate (6). Rectangular holes (7) are opened on the left and right sides of the arc plate (6). The rectangular hole (7) on the left side is higher than that on the right side. Isolation plates (8) are provided on the lower part of the front and rear side walls of the processing tank (3). The left side of the isolation plate (8) is aligned with the arc plate. The rectangular hole (7) on the left side of the plate (6) is flush with the right edge and sealed. The right side of the isolation plate (8) is connected to the left side wall of the feed trough (4). The bottom center of the isolation plate (8) is symmetrically provided with discharge pipes (9). The discharge pipes (9) penetrate the bottom of the processing tank (3). The top left side of the bottom plate (1) is provided with an installation platform (10). The installation platform (10) is provided with a crushing component (11) capable of crushing rare earth tailings. The lower part of the crushing component (11) is provided with a useful... The discharge hopper (12) for conveying crushed tailings is connected to the feed trough (4) at its outlet end. The discharge hopper (12) is equipped with a material distribution component (13) that can feed the tailings at intervals. The feed trough (4) is equipped with a mixing component (14) that can fully mix the tailings. The lower part of the feed trough (4) is equipped with an opening and closing component (15) for intermittent feeding. The recovery tank (5) is equipped with a washing component (16) for tilting and washing the magnetic separator (31).

2. The rare earth tailings recovery extraction device according to claim 1, characterized in that, The crushing assembly (11) includes a crushing box (111). The crushing box (111) is mounted on the top of the mounting platform (10). A rotating shaft (112) is rotatably mounted between the front and rear side walls of the crushing box (111). Fixed discs (113) are spaced apart on the rotating shaft (112) located inside the crushing box (111). Four mounting shafts (114) are eccentrically circumferentially mounted between adjacent fixed discs (113). A breaker hammer (115) is mounted on each mounting shaft (114). A motor for driving the rotating shaft (112) to rotate is mounted on the rear side of the crushing box (111). An arc-shaped isolation net (116) is mounted in the lower part of the crushing box (111). The axis of the arc-shaped isolation net (116) coincides with the axis of the rotating shaft (112).

3. The rare earth tailings recovery extraction device according to claim 2, characterized in that, The material distribution assembly (13) includes a partition (131). The partition (131) is vertically arranged on the upper left side of the discharge hopper (12). A rotating shaft (132) is symmetrically arranged on the left side of the bottom of the discharge hopper (12). A material distribution wheel (133) is arranged on the rotating shaft (132). A rectangular hole (7) is opened on the discharge hopper (12). The material distribution wheel (133) is located in the rectangular hole (7) and fits against the side wall of the rectangular hole (7) of the discharge hopper (12). A rotary motor (134) is arranged on the rear side wall of the discharge hopper (12). The output shaft of the rotary motor (134) is connected to the rotating shaft (132). A vibrator (135) is arranged on the side wall of the discharge hopper (12).

4. The extraction device for rare earth tailings recovery according to claim 3, characterized in that, The mixing assembly (14) includes a first water pump (141). The first water pump (141) is located on the front side of the top of the base plate (1) near the feed trough (4). The outlet of the first water pump (141) is connected to a main pipe (142). A first spray pipe (143) is installed on the right side wall of the feed trough (4). The first spray pipe (143) is connected to the main pipe (142) through a pipe. U-shaped nozzles (144) are spaced apart on the first spray pipe (143). The spray nozzles of the U-shaped nozzles (144) are facing the discharge end of the discharge hopper (12). A strip nozzle (145) is located on the left side of the top of the feed trough (4). The bottom of the strip nozzle (145) is spaced apart with spray nozzles. A stirrer (146) is rotatably installed inside the feed trough (4). A motor for driving the stirrer (146) to rotate is installed on the rear side wall of the feed trough (4).

5. The rare earth tailings recovery extraction device according to claim 4, characterized in that, The opening and closing assembly (15) includes an electric push rod (151). The electric push rod (151) is provided on the front side wall of the feed trough (4). A moving rod (152) is provided between the push rods of the two electric push rods (151). A sliding groove (153) is symmetrically arranged at the bottom of the feed trough (4). The baffle plate (154) is slidably arranged on the sliding groove (153) by a slider. A rectangular discharge hole is opened on the left side of the bottom of the feed trough (4). The baffle plate (154) cooperates with the rectangular discharge hole. The baffle plate (154) is connected to the moving rod (152) by a connecting rod (155).

6. The rare earth tailings recovery extraction device according to claim 5, characterized in that, The flushing assembly (16) includes a second water pump (161). The second water pump (161) is located on the front left side of the top of the frame (2). A second nozzle (162) is installed on the recycling tank (5). The outlet of the second water pump (161) is connected to the second nozzle (162). The second nozzle (162) is provided with flushing nozzles (163) at intervals and inclined upwards.

7. The rare earth tailings recovery extraction device according to claim 6, characterized in that, It also includes a mixing component (17), which is provided at the lower part of the processing tank (3). The mixing component (17) includes a stirring impeller (171). The stirring impeller (171) is symmetrically rotated in the lower part of the processing tank (3). The stirring impeller (171) is located at the two corners of the processing tank (3). Each stirring impeller (171) has a pulley (172) at its rear end. The magnetic separator (31) also has a pulley (172) at its rear end. A flat belt (173) is wound between the three pulleys (172).

8. An extraction device for rare earth tailings recovery according to claim 7, characterized in that, It also includes an air pump (18), which is installed on the front side of the crushing box (111). The air pump (18) is connected to an air inlet pipe (19) at the air inlet end. A filter (20) is provided on the air inlet pipe (19). The air pump (18) is connected to an air outlet pipe (21) at the air outlet end. The air outlet pipe (21) passes through the side wall of the crushing box (111) and faces the arc-shaped isolation net (116).

Images