CN111549232A - Cleaning and screening method and equipment for recycling neodymium iron boron waste - Google Patents

Abstract

The invention relates to the technical field of NdFeB waste recycling, in particular to a cleaning and screening method and equipment for NdFeB waste recycling. A third fixing plate is fixed on the side plate below the fixing plate, and a screening bucket corresponding to the mixing bucket is fixedly installed on the third fixing plate, and a screening mechanism is arranged on the top of the screening bucket. A second discharge pipe is fixedly arranged at the bottom of the screening barrel, a support plate is fixedly installed on the other side of the upper surface of the bottom plate, and a guide box is fixedly installed on the top of the support plate, and the guide box and the second discharge pipe are fixedly installed. A drainage mechanism is arranged therebetween, and a corresponding screening module is arranged on the drainage box. The invention has the advantage of more sufficient recovery of NdFeB waste.

Description

A cleaning and screening method and equipment for recycling NdFeB waste

technical field

The invention relates to the technical field of NdFeB waste recycling, in particular to a cleaning and screening method and equipment for NdFeB waste recycling.

Background technique

NdFeB is simply a magnet. Unlike the magnets we usually see, it is called "Magnetic King" because of its excellent magnetic properties. NdFeB contains a large amount of rare earth elements neodymium, as well as iron and boron, which are hard and brittle. As a rare earth permanent magnet material, NdFeB has extremely high magnetic energy product and coercive force. At the same time, the advantages of high energy density make NdFeB permanent magnet materials widely used in modern industry and electronic technology. It is possible to reduce the size, weight and thickness of equipment such as instruments, electroacoustic motors, and magnetic separation and magnetization.

In the production process of NdFeB magnets, a lot of wastes are often generated, including cutting wastes, sintered blanks, scraps, unqualified products, severely oxidized powders and seriously polluted cutting muds, etc. The total amount reaches the total investment. about 30% of the material. These wastes contain a large amount of rare earth metals, so recycling NdFeB wastes not only reduces the production cost of enterprises and improves economic benefits, but also is of great significance for saving resources and protecting the environment.

Existing cleaning and screening methods and equipment for recycling NdFeB waste are not sufficient for recycling waste. Generally, only larger particles in the waste can be recycled, while waste with smaller particles is discharged with dirty water.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the disadvantage of insufficient recycling of NdFeB waste in the prior art, and proposes a cleaning and screening equipment for recycling NdFeB waste.

In order to achieve the above object, the present invention adopts the following technical solutions:

Design, a cleaning and screening equipment for NdFeB waste recycling, including a bottom plate, a side plate is fixedly installed on one side of the upper surface of the bottom plate, a first fixing plate is fixed on the inner surface of the upper part of the side plate, and the A stirring bucket is fixedly installed on the first fixing plate, a second fixing plate is fixed on the side plate above the first fixing plate, and a motor corresponding to the stirring bucket is fixedly installed on the second fixing plate. After the output shaft of the motor passes through the second fixing plate, a stirring shaft is fixedly connected, and the stirring shaft extends downward into the stirring barrel. Several sets of blades are fixed on the surface of the shaft body of the stirring shaft along the length direction. A first discharge pipe is fixedly connected to the opening at the bottom of the bucket through a valve, a third fixing plate is fixedly arranged on the side plate below the first fixing plate, and a third fixing plate corresponding to the mixing bucket is fixedly installed on the third fixing plate. Screening barrel, the top of the screening barrel is provided with a screening mechanism, the bottom of the screening barrel is fixed with a second discharge pipe, the other side of the upper surface of the bottom plate is fixedly installed with a support plate, and the top of the support plate is fixed A screening box is fixedly installed, a drainage mechanism is arranged between the screening box and the second discharge pipe, and a screening module corresponding to the screening box is arranged on the screening box.

Preferably, the screening module includes a support column, a cross bar, a connecting column, a connecting plate, an electric drum, a conveyor belt, a mounting plate, a material receiving box, a bump, a limit plate, a limit bolt, a connecting plate, and a scraper assembly , a cross bar is arranged on both sides of the screening box, a number of support columns are fixed on the bottom surface of each cross bar, and a connecting plate is fixed at the bottom end of the support column, and the connecting plates are It is fixedly installed on the bottom plate by screws, two connecting columns are fixed on the inner surface of each cross bar, and a connecting plate is fixed at the inner end of each connecting column, and every two corresponding connecting plates Two electric drums are fixedly installed between them, and the four electric drums are distributed in a rectangular shape. A conveyor belt is installed between the four electric drums. The outer surface of the conveyor belt is sprayed with a magnetic coating, and any one of the horizontal A mounting plate is fixedly installed on the rod, a scraper assembly corresponding to the conveyor belt is fixedly installed on the upper part of the mounting plate, a bump is arranged through the mounting plate below the scraper assembly, and the inner surface of the bump is fixedly connected with a A material receiving box, and the material receiving box and the scraping component are arranged correspondingly, a limit plate is fixed on the outer surface of the mounting plate directly below the bump, and the bump and the limit plate are fixed by limit bolts connect.

Preferably, the scraper assembly includes a fixed column, a baffle, a guide rod, a rotating shaft, a scraper, and a driving mechanism, a rotating shaft is threaded through the scraper, and a scraper is disposed through the scraper on both sides of the rotating shaft. A guide rod, both ends of the rotating shaft can be rotatably installed with a baffle plate, both ends of the guide rod are fixedly connected to the corresponding baffle plates, and two A fixed column, the inner ends of the two fixed columns are fixedly connected to the same baffle plate, and any end of the rotating shaft is fixedly connected to a driving mechanism after passing through the corresponding baffle plate.

Preferably, the drive mechanism includes a first gear, a second gear and a servo motor, a first gear is fixedly installed on one end of the rotating shaft, a servo motor is fixedly installed on the adjacent baffle plate, and the servo motor A second gear that meshes with the first gear is fixedly mounted on the end of the output shaft of the gear.

Preferably, the screening mechanism includes a chute, a movable screen and a handle, a chute is opened on both sides of the inner wall of the upper part of the screening bucket, and a movable screen can be slidably installed between the two chute, so A handle is fixedly installed on the movable screen.

Preferably, the drainage mechanism includes a horizontal plate, a vertical plate and an inclined plate, an inclined plate corresponding to the screening box is arranged directly below the second discharge pipe, and a vertical plate is fixed on the lower surface of the inclined plate. A horizontal plate is fixedly installed at the bottom end of the vertical plate, and the horizontal plate is fixedly installed on the screening box.

Preferably, a flow guide nozzle is sleeved at the bottom end of the second discharge pipe.

The present invention also provides a cleaning and screening method for cleaning and screening equipment for recycling dilute NdFeB waste, comprising the following steps:

S1. Pour the NdFeB waste into the mixing bucket, add water, control the volume ratio of water to NdFeB waste to be 2:1, start the motor for stirring, stir until completely mixed, and turn off the motor;

S2. Open the valve, pour the mixed liquid in the mixing barrel into the movable sieve on the sieving barrel, the movable sieve intercepts the larger particle NdFeB waste, and the smaller particle NdFeB waste falls into the sieve with the dirty water In the bucket, after the mixed liquid in the mixing bucket is discharged, wait for the NdFeB waste on the movable screen to be drained, then pull out the movable screen, and pour the NdFeB waste on the movable screen into the collection device;

S3.; When the smaller particles of NdFeB waste follow the dirty water and fall into the screening bucket, it is introduced into the screening box along the drainage mechanism. At this time, the electric drum is started, and the electric drum drives the conveyor belt to move far. When the conveyor belt and the screening When the dirty water in the box is in contact, the magnetic coating sprayed on the conveyor belt will adsorb the smaller particles of NdFeB waste and transmit it to the scraper assembly;

S4. When the scraper assembly of the conveyor belt moving column that adsorbs the NdFeB scrap with smaller particles is, turn on the servo motor to drive the scraper to reciprocate, and scrape the scrap on the conveyor belt to the lower receiving box;

S5. After the adsorption of the smaller particles of NdFeB waste in the dirty water is completed, turn off the electric drum and servo motor, and discharge the dirty water out of the screening box

The cleaning and screening equipment for recycling NdFeB wastes proposed by the present invention has the beneficial effects that: by setting up a screening mechanism and a screening module, the screening mechanism can be used to intercept and recycle large-particle wastes in the wastes quickly, and then recycle them. The conveyor belt on the screening module is used to recycle the remaining small particle waste in the dirty water, so as to realize the full recovery of the waste; by setting up a mixing bucket, etc., the waste can be fully mixed with the water, which facilitates the rapid follow-up operation.

Description of drawings

Fig. 1 is the structural representation one of a kind of NdFeB waste recycling cleaning and screening equipment proposed by the present invention;

Fig. 2 is a schematic structural diagram 2 of a cleaning and screening equipment for recycling NdFeB wastes proposed by the present invention;

Fig. 3 is a partial structure schematic diagram at A of Fig. 1;

Fig. 4 is the partial structure schematic diagram at B of Fig. 1;

5 is a schematic diagram of a partial structure at C of the figure;

6 is a schematic cross-sectional structural diagram of a cleaning and screening equipment for recycling NdFeB wastes proposed by the present invention;

FIG. 7 is a schematic diagram of the partial structure at D of FIG. 6 .

In the figure: bottom plate 1, side plate 2, first fixing plate 3, mixing barrel 4, second fixing plate 5, motor 6, mixing shaft 7, blade 8, valve 9, first discharge pipe 10, third fixing plate 11. Screening barrel 12, chute 13, movable screen 14, handle 15, second discharge pipe 16, guide nozzle 17, support plate 18, screening box 19, horizontal plate 20, vertical plate 21, inclined plate 22 , support column 23, cross bar 24, connecting column 25, connecting plate 26, electric drum 27, conveyor belt 28, mounting plate 29, fixed column 30, baffle 31, guide rod 32, rotating shaft 33, scraper 34, first gear 35. The second gear 36, the servo motor 37, the material receiving box 38, the bump 39, the limit plate 40, the limit bolt 41, and the connecting plate 42.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Example 1

1-7, a cleaning and screening equipment for recycling NdFeB waste, including a bottom plate 1, a side plate 2 is fixedly installed on one side of the upper surface of the bottom plate 1, and a first fixing plate 3 is fixed on the inner surface of the upper part of the side plate 2. , a mixing barrel 4 is fixedly installed on the first fixing plate 3, a second fixing plate 5 is fixed on the side plate 2 above the first fixing plate 3, and a mixing barrel 4 corresponding to the mixing barrel 4 is fixedly installed on the second fixing plate 5. Motor 6, the output shaft of the motor 6 is fixedly connected with a stirring shaft 7 after passing through the second fixing plate 5, and the stirring shaft 7 extends downward into the stirring barrel 4, and the surface of the shaft body of the stirring shaft 7 is fixed with several groups along the length direction. The blade 8 and the opening at the bottom of the mixing barrel 4 are fixedly connected with a first discharge pipe 10 through a valve 9 . When in use, pour the material into the mixing bucket 4, then add an appropriate amount of water, then start the motor 6, drive the mixing shaft 7 to drive the blade 8 to stir and mix the material, and after the mixing is uniform, open the valve 9 to discharge the mixed liquid. Enter the screening mechanism below for preliminary screening.

A third fixing plate 11 is fixed on the side plate 2 below the first fixing plate 3 , and a screening bucket 12 corresponding to the mixing bucket 4 is fixedly installed on the third fixing plate 11 , and a screening bucket 12 is arranged on the top of the screening bucket 12 . The screening mechanism includes a chute 13, a movable screen 14, and a handle 15. A chute 13 is opened on both sides of the upper inner wall of the screening barrel 12. A movable screen 14 can be slidably installed between the two chute 13. A handle 15 is fixedly installed on the screen 14 . When the mixed liquid is poured into the movable screen 14 from the first discharge pipe 10, the movable screen 14 intercepts the materials with larger particles in the mixed liquid, and the materials with smaller particles follow the liquid into the lower screening bucket. When the larger particles in the movable sieve 14 are accumulated to a certain extent, the movable sieve 14 is drawn out, and the materials accumulated on the movable sieve 14 are poured into a special collection bucket. The movable screen 14 that can be slidably arranged can facilitate the collection of waste materials.

A second discharge pipe 16 is fixed at the bottom of the screening bucket 12, a support plate 18 is fixedly installed on the other side of the upper surface of the bottom plate 1, and a screen box 19 is fixedly installed at the top of the support plate 18. The screen box 19 and the second discharge A drainage mechanism is arranged between the pipes 16 , and a corresponding sieving module is arranged on the sieving box 19 . The function of the screening module is to further screen the liquid discharged from the screening barrel 12, so as to screen out the wastes with smaller particles in the liquid.

The screening module includes a support column 23, a cross bar 24, a connecting column 25, a connecting plate 26, an electric drum 27, a conveyor belt 28, a mounting plate 29, a material receiving box 38, a bump 39, a limit plate 40, limit bolts 41, The connecting plate 42, the scraping component, a cross bar 24 is provided on both sides of the screening box 19, a number of support columns 23 are fixed on the bottom surface of each cross bar 24, and the bottom ends of the support columns 23 are fixed with connecting plates 42. The connecting plates 42 are fixedly installed on the bottom plate 1 by screws, and two connecting columns 25 are fixed on the inner surface of each cross bar 24, and a connecting plate 26 is fixed at the inner end of each connecting column 25. Two electric drums 27 are fixedly installed between the corresponding connecting plates 26, and the four electric drums 27 are distributed in a rectangular shape. A conveyor belt 28 is installed between the four electric drums 27, and the outer surface of the conveyor belt 28 is sprayed with a magnetic coating. A mounting plate 29 is fixedly installed on any one of the cross bars 24, and a scraper assembly corresponding to the conveyor belt 28 is fixedly installed on the upper part of the mounting plate 29. The mounting plate 29 below the scraper assembly is provided with a convex block 39, and the inner surface of the convex block 29 is provided. A material receiving box 38 is fixedly connected to the upper part, and the material receiving box 38 is correspondingly arranged with the scraper assembly. A limit plate 40 is fixed on the outer surface of the mounting plate 29 directly under the bump 39, and between the bump 39 and the limit plate 40 The connection is fixed by the limit bolt 41 . The function of the conveyor belt 28 is to use the continuously running conveyor belt 28 to contact the liquid in the sieving box 19, so as to use the magnetic coating sprayed on the conveyor belt 28 to absorb the smaller particles of waste in the liquid, so as to remove the remaining liquid in the liquid. The smaller particles of waste are screened out.

The scraper assembly includes a fixed column 30, a baffle 31, a guide rod 32, a rotating shaft 33, a scraper 34, and a driving mechanism. The scraper 34 is provided with a rotating shaft 33 through the thread, and the scrapers 34 on both sides of the rotating shaft 33 are provided with a rotating shaft 33. On the guide rod 32, both ends of the rotating shaft 33 can be rotatably installed with a baffle plate 31, both ends of the guide rod 32 are fixedly connected to the corresponding baffle plate 31, and two The fixing column 30, the inner ends of the two fixing columns 30 are fixedly connected to the same baffle 31, the shaft body of the rotating shaft 33 between the two baffles 31 is threaded, and any end of the rotating shaft 33 passes through the corresponding baffle A driving mechanism is fixedly connected to the rear of the plate 31 . The driving mechanism includes a first gear 35, a second gear 36, and a servo motor 37. One end of the rotating shaft 33 is fixedly installed with the first gear 35, and the adjacent baffle plate 31 is fixedly installed with a servo motor 37. The output shaft of the servo motor 37 A second gear 36 meshing with the first gear 35 is fixedly mounted on the end. The servo motor 37 is used to periodically drive the rotating shaft 33 to move clockwise and counterclockwise by means of gear transmission, so as to drive the scraper 34 to perform lateral reciprocating motion. The reciprocating scraper 34 continuously scrapes off the scraps with smaller particles adsorbed on the conveyor belt 28 , and the scraps after hanging directly fall into the receiving box 28 below.

The present invention also provides a cleaning and screening method for cleaning and screening equipment for recycling dilute NdFeB waste, comprising the following steps:

S1. Pour the NdFeB waste into the mixing bucket, add water, control the volume ratio of water to NdFeB waste to be 2:1, start the motor for stirring, stir until completely mixed, and turn off the motor;

S2. Open the valve, pour the mixed liquid in the mixing barrel into the movable sieve on the sieving barrel, the movable sieve intercepts the larger particle NdFeB waste, and the smaller particle NdFeB waste falls into the sieve with the dirty water In the bucket, after the mixed liquid in the mixing bucket is discharged, wait for the NdFeB waste on the movable screen to be drained, then pull out the movable screen, and pour the NdFeB waste on the movable screen into the collection device;

S3.; When the smaller particles of NdFeB waste follow the dirty water and fall into the screening bucket, it is introduced into the screening box along the drainage mechanism. At this time, the electric drum is started, and the electric drum drives the conveyor belt to move far. When the conveyor belt and the screening When the dirty water in the box is in contact, the magnetic coating sprayed on the conveyor belt will adsorb the smaller particles of NdFeB waste and transmit it to the scraper assembly;

S4. When the scraper assembly of the conveyor belt moving column that adsorbs the NdFeB scrap with smaller particles is, turn on the servo motor to drive the scraper to reciprocate, and scrape the scrap on the conveyor belt to the lower receiving box;

S5. After the adsorption of the smaller particles of NdFeB waste in the dirty water is completed, turn off the electric drum and the servo motor, and discharge the dirty water out of the screening box.

When the present invention is in use, the user pours the waste into the mixing bucket 4, adds water and stirs, and then pours it into the screening mechanism for preliminary screening. The magnetic coating adsorbs the small particle waste in the dirty water in the screening box 19, and uses the scraping component to scrape the waste adsorbed on the conveyor belt 28 to the lower junction box 38, so as to realize the complete and sufficient waste. The screening and utilization of waste materials greatly improves the recycling efficiency of waste materials.

Example 2

1-2, as another preferred embodiment of the present invention, the difference from Embodiment 1 is that the drainage mechanism includes a horizontal plate 20, a vertical plate 21, and an inclined plate 22, and the second discharge pipe 16 is provided with a The inclined plate 22 corresponding to the screening box 19 is fixed with a vertical plate 21 on the lower surface of the inclined plate 22 . A guide nozzle 17 is sleeved at the bottom end of the second discharge pipe 16 .

By arranging the drainage mechanism, the dirty water flowing out of the screening bucket 12 can be introduced into the screening box 19 more uniformly, so that the contact between the conveyor belt 28 and the dirty water is more uniform and effective, thereby making the coating on the transmission belt 28 more uniform and effective. It can more efficiently adsorb small particle waste in dirty water. The guide nozzle 17 installed at the same time can guide the dirty water, so as to avoid the dirty water flowing out of the second discharge pipe 16 from splashing and causing waste.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. A cleaning and screening equipment for recycling NdFeB waste, comprising a bottom plate (1), characterized in that a side plate (2) is fixedly installed on one side of the upper surface of the bottom plate (1), and the side plate (2) ) The inner surface of the upper part is fixedly provided with a first fixing plate (3) on which a stirring bucket (4) is fixedly installed, and a side plate (2) above the first fixing plate (3) A second fixing plate (5) is fixedly installed on the second fixing plate (5), a motor (6) corresponding to the stirring barrel (4) is fixedly installed on the second fixing plate (5), and the output shaft of the motor (6) passes through A stirring shaft (7) is fixedly connected to the second fixing plate (5), and the stirring shaft (7) extends downward into the stirring barrel (4), and the surface of the shaft body of the stirring shaft (7) is fixed along the length direction. Several sets of blades (8) are provided, a first discharge pipe (10) is fixedly connected to the bottom opening of the mixing barrel (4) through a valve (9), and a side plate ( 2) A third fixing plate (11) is fixed on the third fixing plate (11), and a screening bucket (12) corresponding to the mixing bucket (4) is fixedly installed on the third fixing plate (11). ) is provided with a screening mechanism at the top, a second discharge pipe (16) is fixed at the bottom of the screening barrel (12), and a support plate (18) is fixedly installed on the other side of the upper surface of the bottom plate (1), so A screening box (19) is fixedly installed on the top of the support plate (18), and a drainage mechanism is arranged between the screening box (19) and the second discharge pipe (16). A corresponding sieving module is provided. 2. The cleaning and screening equipment for recycling NdFeB waste according to claim 1, wherein the screening module comprises a support column (23), a cross bar (24), a connecting column (25), connecting plate (26), electric drum (27), conveyor belt (28), mounting plate (29), material receiving box (38), bump (39), limit plate (40), limit bolt (41), A connecting plate (42) and a scraper assembly, a cross bar (24) is provided on both sides of the screening box (19), and a plurality of support columns ( 23), the bottom ends of the support columns (23) are fixedly provided with connecting plates (42), and the connecting plates (42) are fixedly installed on the bottom plate (1) by screws, and each of the cross bars (24) Two connecting columns (25) are fixedly arranged on the inner surface, and a connecting plate (26) is fixedly arranged at the inner end of each connecting column (25), and between each two corresponding connecting plates (26) Two electric drums (27) are fixedly installed, and the four electric drums (27) are distributed in a rectangular shape, and a conveyor belt (28) is fitted between the four electric drums (27), and the conveyor belt (28) The outer surface is sprayed with a magnetic coating, a mounting plate (29) is fixedly installed on any one of the cross bars (24), and a scraper assembly corresponding to the conveyor belt (28) is fixedly installed on the upper part of the mounting plate (29). The mounting plate (29) below the scraper assembly is provided with a protrusion (39) through it, and a material receiving box (38) is fixedly connected to the inner surface of the convex block (29), and the material receiving box (38) Corresponding to the scraper assembly, a limit plate (40) is fixed on the outer surface of the mounting plate (29) directly below the bump (39), and a limit plate (40) is fixed between the bump (39) and the limit plate (40). The connection is fixed by the limit bolt (41). 3. The cleaning and screening equipment for NdFeB waste recycling according to claim 2, wherein the scraper assembly comprises a fixed column (30), a baffle plate (31), a guide rod (32), A rotating shaft (33), a scraper (34), and a driving mechanism, a rotating shaft (33) is provided through the thread on the scraper (34), and the scrapers (34) on both sides of the rotating shaft (33) are provided with a rotating shaft (34). A guide rod (32), both ends of the rotating shaft (33) can be rotatably installed with a baffle plate (31), and both ends of the guide rod (32) are fixedly connected to the corresponding baffle plates (31) , two fixing columns (30) are fixedly installed on the upper inner surface of the mounting plate (29), and the inner ends of the two fixing columns (30) are fixedly connected to the same baffle plate (31). Either end of the rotating shaft (33) is fixedly connected with a driving mechanism after passing through the corresponding baffle plate (31). 4. The cleaning and screening equipment for recycling NdFeB waste according to claim 3, wherein the drive mechanism comprises a first gear (35), a second gear (36), a servo motor (37) A first gear (35) is fixedly installed on one end of the rotating shaft (33), a servo motor (37) is fixedly installed on the adjacent baffle plate (31), and the output shaft of the servo motor (37) A second gear (36) meshing with the first gear (35) is fixedly mounted on the end. 5 . The cleaning and screening equipment for recycling NdFeB waste according to claim 1 , wherein the screening mechanism comprises a chute (13), a movable screen (14), and a handle (15), the A chute (13) is opened on both sides of the upper inner wall of the screening bucket (12), and a movable screen (14) is slidably installed between the two chute (13), and the movable screen (14) A handle (15) is fixedly installed on it. 6 . The cleaning and screening equipment for recycling NdFeB waste according to claim 1 , wherein the drainage mechanism comprises a horizontal plate (20), a vertical plate (21), and a sloping plate (22), wherein the An inclined plate (22) corresponding to the screening box (19) is arranged directly below the second discharge pipe (16), and a vertical plate (21) is fixed on the lower surface of the inclined plate (22). (21) A transverse plate (20) is fixedly installed at the bottom end, and the transverse plate (20) is fixedly installed on the screening box (19). 7 . The cleaning and screening equipment for recycling NdFeB waste according to claim 1 , wherein a guide nozzle ( 17 ) is sleeved at the bottom end of the second discharge pipe ( 16 ). 8 . 8. The cleaning and screening method of a cleaning and screening equipment for recycling of a kind of dilute NdFeB waste according to claim 1-7, is characterized in that, comprises the following steps: S1. Pour the NdFeB waste into the mixing bucket, add water, control the volume ratio of water to NdFeB waste to be 2:1, start the motor for stirring, stir until completely mixed, and turn off the motor; S2. Open the valve, pour the mixed liquid in the mixing barrel into the movable sieve on the sieving barrel, the movable sieve intercepts the larger particle NdFeB waste, and the smaller particle NdFeB waste falls into the sieve with the dirty water In the bucket, after the mixed liquid in the mixing bucket is discharged, wait for the NdFeB waste on the movable screen to be drained, then pull out the movable screen, and pour the NdFeB waste on the movable screen into the collection device; S3.; When the smaller particles of NdFeB waste follow the dirty water and fall into the screening bucket, it is introduced into the screening box along the drainage mechanism. At this time, the electric drum is started, and the electric drum drives the conveyor belt to move far. When the conveyor belt and the screening When the dirty water in the box is in contact, the magnetic coating sprayed on the conveyor belt will adsorb the smaller particles of NdFeB waste and transmit it to the scraper assembly; S4. When the conveyor belt moving column scraper assembly that adsorbs the NdFeB waste with smaller particles, turn on the servo motor to drive the scraper to reciprocate, and scrape the scrap on the conveyor belt into the receiving box below; S5. After the adsorption of the smaller particles of NdFeB waste in the dirty water is completed, turn off the electric drum and the servo motor, and discharge the dirty water out of the screening box.

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