Magnetic separation material for removing heavy metals from soil and preparation method thereof

Abstract

The present invention discloses a method for preparing a magnetic separation material for removing heavy metals from soil, comprising the following steps: S1: grinding ferroboric ore powder into particles of about 2,000 meshes, then magnetically separating ferroboric concentrate, and then roasting the magnetically separated ferroboric concentrate to sinter the iron element in the ferroboric concentrate into ferric oxide. In the present invention, the device can fix the mold, and the staff can inject the metal liquid to facilitate the molding of the metal liquid in the mold. The position of the device and the mold can be changed by pushing the pull rod. The position of the mold can be easily adjusted when it falls on the rotating roller, making it easier for the staff to knock the mold so that the mold can be directly broken on the rotating roller, facilitating the cooling and molding of the magnet metal inside the mold in the air. This simplifies the traditional magnet molding steps, is more convenient, and saves the staff's time.

Description

Technical Field

[0001] The present invention relates to the field of magnetic separation technology, and in particular to a magnetic separation material for removing heavy metals from soil and a preparation method thereof. Background Art

[0002] A magnetic separator is needed to remove heavy metals from the soil, and the magnetic system in the magnetic separator directly affects the performance of the magnetic separator. The magnetic system is a group of magnetic poles or a pair of magnetic poles, which can be divided into open magnetic systems and closed magnetic systems. The magnetic system is a key component of the magnetic separator, and its magnetic properties directly affect the technical performance and separation effect of the magnetic separator.

[0003] The ratio of the metal components in the magnet determines the magnetism of the magnet. For example, if you want to increase the magnetic field strength of the boron element in the magnet, you need to add neodymium and a small amount of boron to the raw materials used to make the magnet. This is the method used in neodymium iron boron magnets.

[0004] Then, the boron in the current magnets needs to be extracted from the boron in the boron iron ore powder first, and then added to the magnets when making the magnets. The steps are relatively cumbersome, and the magnet making process has many steps, such as: the magnets are injection molded and formed, and the injection molding and demolding processes need to be carried out in different locations, and guide rails are required for transportation. The injection molding and demolding processes have many steps, so more tools are used, which is more inconvenient, increases time costs, and reduces work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and to propose a magnetic separation material and a preparation method for removing heavy metals from soil.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for preparing a magnetic separation material for removing heavy metals from soil comprises the following steps:

[0008] S1: Grind the ferroboron ore powder into particles of about 2,000 mesh, then magnetically separate the ferroboron concentrate, and then roast the magnetically separated ferroboron concentrate to sinter the iron in the ferroboron concentrate into ferric oxide;

[0009] S2: Place the ferric oxide, copper, cobalt, sulfur, pure iron, aluminum, and titanium in S1 into a furnace. The electromagnetic heat generated by the furnace reaches over 1,600 degrees Celsius, calcining the metal blocks into liquid metal.

[0010] S3: The metal liquid in S2 is processed into a preliminary shape through the injection molding device;

[0011] S4: Grinding the formed metal in S3, and then magnetizing it using a magnetizer to obtain a finished magnet;

[0012] The injection molding device used in S3 includes a base, a mold and a universal wheel, the base is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to a base, the two ends of the base are respectively fixedly connected to a U-shaped frame 1 and a U-shaped frame 2, the ends of the U-shaped frame 1 and the U-shaped frame 2 are fixedly connected to a connecting plate, a rotating roller is rotatably connected between the side walls of the U-shaped frame 1 and the U-shaped frame 2, the U-shaped frame 1 and the U-shaped frame 2 are both slidably connected to the square hole opened on the slider, the outer wall of the slider is fixedly connected to a protruding connecting ring, and the slider is slidably connected to the slide groove opened on the sleeve block. The cam is fixedly connected to the base, and a baffle abutting against the U-shaped frame 1 and the U-shaped frame 2 is fixedly connected to the base, and an adjusting member for adjusting the position of the mold on the rotating roller is provided between the U-shaped frame 1 and the U-shaped frame 2.

[0013] Preferably, the adjusting member includes a screw rod 1 rotatably connected between the bending parts of the U-shaped frame 2, one end of the screw rod 1 is fixedly connected to a handle, a round rod is fixedly connected between the bending parts of the U-shaped frame 1, the round rod passes through a circular hole 1 provided on the push block, the push block is provided with a screw hole 1 connected to the screw rod 1 by a thread, and the base is provided with a limit member that cooperates with the screw rod 1 to limit the position of the U-shaped frame 1 and the U-shaped frame 2.

[0014] Preferably, the limit member includes a bevel gear 1 fixedly connected to the end of the screw 1, the base is provided with a groove 1 and a groove 2 which are connected to each other, a protrusion is fixedly connected in the groove 1 and the groove 2, the groove 1 and the groove 2 cooperate with the protrusion to form a U-shaped groove, and the vertical heights of the two ends of the U-shaped groove are different, the upper surface of the protrusion abuts a movable plate, the end of the movable plate is fixedly connected to a bent plate, a notch is provided on the push block, the bending part of the bent plate abuts against the side wall of the connecting plate through the notch, and the groove is There is a second screw connected in rotation, and a convex ring is fixedly connected to the second screw at a position lower than the upper surface of the convex block, and a vertical block connected to the convex ring is fixedly connected to the outer wall of the first slot, and the second screw passes through the vertical hole opened on the second bevel gear, and a vertical slot is opened on the inner wall of the vertical hole to be slidably connected to the vertical block. A spring is provided on the outer sleeve of the second screw, and a vertical rod is fixedly connected to the second slot, and the vertical rod passes through the second circular hole opened on the movable plate. The second screw is connected to the second screw hole opened on the movable plate by a threaded connection, and a spring is provided on the vertical rod.

[0015] Preferably, the spring 1 pushes the bevel gear 2 to engage with the bevel gear 1, the upper half of the screw 2 is not provided with threads, and the spring 2 pushes the movable plate to move upward until the movable plate abuts against the top of the inner wall of the slot 1 and the slot 2. At this time, the movable plate is not connected to the screw 2 by threads.

[0016] Preferably, the end of the pressure plate is fixedly connected to a metal gasket by screws, the outer wall of the slider is fixedly connected to a connecting block, the connecting block is fixedly connected to a push rod, and the connecting block is slidably connected to the outer wall of the U-shaped frame one or the U-shaped frame two.

[0017] The magnetic separation material for removing heavy metals from soil includes the following components: Sm 25wt%, Fe 15-26wt%, Zr 3wt%, Co 60wt%, Cu 6wt% and B 0.03wt%.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] 1. The present application can fix the mold through the device, so as to inject metal liquid, which is convenient for the metal liquid to be formed in the mold. The position of the device and the mold can be changed by pushing the pull rod. The position of the mold can be easily adjusted when it falls on the rotating roller, so that it is convenient for the staff to knock the mold, so that the mold can be directly broken on the rotating roller, which is convenient for the magnet metal inside the mold to cool and form in the air, simplifying the traditional magnet forming steps, being more convenient, and saving the staff's time.

[0020] 2. In the present application, when bevel gear 1 and bevel gear 2 are meshed, the push block can push the mold close to the hand lever during the rotation of the hand lever, thereby increasing the exposed area of the mold, making it easier for the staff to use tools to break the mold. In addition, when screw 1 rotates, screw 2 rotates together, causing the bent plate to clamp the connecting plate during the downward movement, so that the U-shaped frame 1 and U-shaped frame 2 will not change their positions due to vibration during the process of breaking the mold. The U-shaped frame 1 and U-shaped frame 2 can remain stable, making it easier for the staff to break the mold, thereby exposing the molded magnet inside the mold to the air and cooling and forming in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It shows a schematic diagram of the overall structure of a magnet forming device provided in an embodiment of the present invention;

[0022] Figure 2 It shows a schematic structural diagram of one side of a magnet forming device provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the tilting structure of the U-shaped frame 1 and the U-shaped frame 2 provided in an embodiment of the present invention is shown;

[0024] Figure 4 It shows a schematic structural diagram of a base portion provided in an embodiment of the present invention;

[0025] Figure 5 It shows a schematic structural diagram of a U-shaped frame 1 and a U-shaped frame 2 provided according to an embodiment of the present invention;

[0026] Figure 6 It shows a schematic diagram of the separation of the structures of the U-shaped frame 1 and the U-shaped frame 2 provided in an embodiment of the present invention;

[0027] Figure 7 It shows a schematic structural diagram of the first and second slots provided according to an embodiment of the present invention;

[0028] Legend:

[0029] 1. Base; 2. Rotating shaft; 3. Base; 4. U-shaped frame 1; 5. U-shaped frame 2; 6. Connecting plate; 7. Rotating roller; 8. Slider; 9. Connecting ring; 10. Square hole; 11. Connecting block; 12. Push rod; 13. Bushing block; 14. Slide groove; 15. Ring groove; 16. Press plate; 17. Metal gasket; 18. Square block; 19. Screw groove; 20. Bolt; 21. Opening hole; 22. Pull rod; 23. Universal wheel; 24. Baffle; 25. Screw rod 1; 26. Round rod; 27, push block; 28, notch; 29, screw hole one; 30, circular hole one; 31, turntable; 32, bevel gear one; 33, slot one; 34, slot two; 35, convex block; 36, movable plate; 37, bent plate; 38, screw hole two; 39, circular hole two; 40, screw rod two; 41, vertical block; 42, convex ring; 43, spring one; 44, bevel gear two; 45, vertical hole; 46, vertical slot; 47, vertical rod; 48, spring two; 49, mold. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figure 1-7 , the present invention provides a technical solution:

[0032] A method for preparing a magnetic separation material for removing heavy metals from soil comprises the following steps:

[0033] S1: Grind the ferroboron ore powder into particles of about 2,000 mesh, then magnetically separate the ferroboron concentrate, and then roast the magnetically separated ferroboron concentrate to sinter the iron in the ferroboron concentrate into ferric oxide;

[0034] S2: Place the ferric oxide, copper, cobalt, sulfur, pure iron, aluminum, and titanium in S1 into a furnace. The electromagnetic heat generated by the furnace reaches over 1,600 degrees Celsius, calcining the metal blocks into liquid metal.

[0035] S3: The metal liquid in S2 is processed into a preliminary shape through the injection molding device;

[0036] S4: Grinding the formed metal in S3, and then magnetizing it using a magnetizer to obtain a finished magnet;

[0037] The injection molding device in S3 includes a base 1, a mold 49 and a universal wheel 23. The base 1 is rotatably connected to a rotating shaft 2, and the rotating shaft 2 is fixedly connected to a base 3. The two ends of the base 3 are respectively fixedly connected to a U-shaped frame 1 4 and a U-shaped frame 2 5. The ends of the U-shaped frame 1 4 and the U-shaped frame 2 5 are fixedly connected to a connecting plate 6. A rotating roller 7 is rotatably connected between the side walls of the U-shaped frame 1 4 and the U-shaped frame 2 5. The U-shaped frame 1 4 and the U-shaped frame 2 5 are both slidably connected to the square hole 10 opened on the slider 8. A protruding connecting ring 9 is fixedly connected to the outer wall of the slider 8. The slider 8 is slidably connected to the slide groove 14 opened on the sleeve block 13. The inner wall of the slide groove 14 A ring groove 15 is provided on the top for rotationally connected to the connecting ring 9, a pressure plate 16 is fixedly connected to the sleeve block 13, a block 18 is fixedly connected to the sleeve block 13, a screw groove 19 is provided on the block 18, and an opening 21 that is adapted to the size of the screw groove 19 is provided on both the U-shaped frame 1 4 and the U-shaped frame 2 5, a bolt 20 passes through the opening 21, and the end of the bolt 20 is screwed into the screw groove 19 through a thread, an inclined pull rod 22 is fixedly connected to the base 1, a baffle 24 that abuts against the U-shaped frame 1 4 and the U-shaped frame 2 5 is fixedly connected to the base 1, and an adjustment member for adjusting the position of the mold 49 on the rotating roller 7 is provided between the U-shaped frame 1 4 and the U-shaped frame 2 5.

[0038] The adjusting part includes a screw rod 25 rotatably connected between the bending parts of the U-shaped frame 25, one end of the screw rod 25 is fixedly connected to a handle 31, and a round rod 26 is fixedly connected between the bending parts of the U-shaped frame 4. The round rod 26 passes through a circular hole 30 provided on the push block 27, and a screw hole 29 is provided on the push block 27 to be threadedly connected to the screw rod 25. When the handle 31 is rotated, the position of the push block 27 can be changed, thereby causing the mold 49 on the rotating roller 7 to be pushed close to the handle 31, and the exposed part of the mold 49 becomes larger, which is convenient for the staff to use tools to break the mold 49. A limit member is provided on the base 1 to cooperate with the screw rod 25 to limit the position of the U-shaped frame 4 and the U-shaped frame 25.

[0039] The limiting member includes a bevel gear 32 fixedly connected to the end of the screw 25, and a groove 1 33 and a groove 2 34 are provided on the base 1. A protrusion 35 is fixedly connected to the groove 1 33 and the groove 2 34. The groove 1 33 and the groove 2 34 cooperate with the protrusion 35 to form a U-shaped groove, and the vertical heights of the two ends of the U-shaped groove are different. The upper surface of the protrusion 35 abuts against a movable plate 36, and the end of the movable plate 36 is fixedly connected to a bent plate 37. A notch 28 is provided on the push block 27, and the bending part of the bent plate 37 abuts against the side wall of the connecting plate 6 through the notch 28. The groove 1 33 is rotatably connected to the screw 2 40, and a convex ring 42 is fixedly connected to the screw 2 40 below the upper surface of the protrusion 35. A vertical block 41 connected to the convex ring 42 is fixedly connected to the outer wall of the groove 1 33, and the screw 2 40 passes through the bevel gear 2 4 4, a vertical hole 45 is opened on the inner wall of the vertical hole 45, a vertical slot 46 is opened on the inner wall of the vertical hole 45 and is slidably connected to the vertical block 41, a spring 43 is provided on the outer sleeve of the screw rod 2 40, and a vertical rod 47 is fixedly connected to the slot 2 34, and the vertical rod 47 passes through the circular hole 2 39 opened on the movable plate 36, and the screw 2 40 is connected to the screw hole 2 38 opened on the movable plate 36 by a thread, and a spring 2 48 is provided on the vertical rod 47, and the spring 1 43 pushes the bevel gear 2 44 to mesh with the bevel gear 1 32. The upper half of the screw 2 40 is not threaded, and the spring 2 48 pushes the movable plate 36 to move upward until the movable plate 36 abuts against the top of the inner wall of the slot 1 33 and the slot 2 34. At this time, the movable plate 36 is not threadedly connected to the screw 2 40, so the screw 2 40 at this time will not cause the position of the movable plate 36 to change during rotation.

[0040] The end of the pressure plate 16 is fixedly connected to a metal gasket 17 by a screw, and a connecting block 11 is fixedly connected to the outer wall of the slider 8, and a push rod 12 is fixedly connected to the connecting block 11. The connecting block 11 is slidably connected to the outer wall of the U-shaped frame 14 or the U-shaped frame 25. Since the metal gasket 17 can be replaced and the sleeve block 13 can be rotated, the metal gasket 17 can be rotated to the outside of the U-shaped frame 14 or the U-shaped frame 25, making it more convenient for the staff to remove the metal gasket 17.

[0041] The magnetic separation material for removing heavy metals from soil includes the following components: Sm 25wt%, Fe 15-26wt%, Zr 3wt%, Co 60wt%, Cu 6wt% and B 0.03wt%.

[0042] In summary, in this embodiment, the mold 49 is placed on the base 3, and the U-shaped frame 1 4 and the U-shaped frame 2 5 are rotated so that the outer walls of the U-shaped frame 1 4 and the U-shaped frame 2 5 abut against the pull rod 22. At this time, the base 3 is tilted due to the U-shaped frame 1 4 and the U-shaped frame 2 5, so that the opening of the mold 49 is tilted to receive the molten metal liquid. Then, the push rod 12 is pulled so that the metal gasket 17 at the bottom of the pressure plate 16 abuts against the top of the mold 49, and then the bolt 20 is passed through the opening 21 until the bolt 20 is in contact with the screw groove 19. The position of the block 18 is fixed by the threaded connection, so the pressing plate 16 stably presses the mold 49, so that the mold 49 maintains a stable position, and the molten metal liquid is poured into the mold 49. At this time, the metal liquid in the mold 49 gradually cools and forms. In order to accelerate the cooling of the metal liquid into a metal block, the push rod 12 is pushed to rotate until the U-shaped frame 1 4 and the U-shaped frame 2 5 and the mold 49 rotate 90 degrees together, until the outer walls of the U-shaped frame 1 4 and the U-shaped frame 2 5 abut against the baffle 24, and then the bolt is rotated. 20, thereby releasing the restriction on the pressure plate 16, and the mold 49 falls onto the rotating roller 7 under the action of gravity. At this time, the spring 1 43 pushes the bevel gear 2 44 to engage with the bevel gear 1 32, and the turning handle 31 is turned, which causes the screw 1 25 to rotate and cause the push block 27 to push the mold 49 to gradually move away from the base 3. At this time, the bevel gear 2 44 drives the screw 2 40 to rotate during rotation, pressing the moving plate 36 downward, so that the moving plate 36 is connected to the screw 2 40 through a thread, so as the screw 2 40 rotates The rotation causes the movable plate 36 to move downward until the bent end of the bent plate 37 is stuck on the connecting plate 6, fixing the position of the connecting plate 6. At this time, the staff can knock on the mold 49 on the rotating roller 7 until the mold 49 is broken, and then the bevel gear 2 44 can be stepped down to separate the bevel gear 1 32 from the bevel gear 2 44 and no longer mesh. At this time, continue to rotate the handle 31, which can cause the push block 27 to push the magnets on the rotating roller 7 that have been detached from the mold 49 out of the rotating roller 7, and collect all the magnets for subsequent processing.

[0043] The above description of the embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a magnetic separation material for removing heavy metals from soil, characterized in that: The following steps are involved: S1: Grind the ferroboron ore powder into particles of about 2,000 mesh, then magnetically separate the ferroboron concentrate, and then roast the magnetically separated ferroboron concentrate to sinter the iron in the ferroboron concentrate into ferric oxide; S2: Place the ferric oxide, copper, cobalt, sulfur, pure iron, aluminum, and titanium in S1 into a furnace. The electromagnetic heat generated by the furnace reaches over 1,600 degrees Celsius, calcining the metal blocks into liquid metal. S3: The metal liquid in S2 is processed into a preliminary shape through the injection molding device; S4: Grinding the formed metal in S3, and then magnetizing it using a magnetizer to obtain a finished magnet; The injection molding device used in S3 includes a base (1), a mold (49) and a universal wheel (23), the base (1) is rotatably connected to a rotating shaft (2), the rotating shaft (2) is fixedly connected to a base (3), the two ends of the base (3) are respectively fixedly connected to a U-shaped frame 1 (4) and a U-shaped frame 2 (5), the ends of the U-shaped frame 1 (4) and the U-shaped frame 2 (5) are fixedly connected to a connecting plate (6), a rotating roller (7) is rotatably connected between the side walls of the U-shaped frame 1 (4) and the U-shaped frame 2 (5), the U-shaped frame 1 (4) and the U-shaped frame 2 (5) are both slidably connected to a square hole (10) opened on a slider (8), a protruding connecting ring (9) is fixedly connected to the outer wall of the slider (8), the slider (8) is slidably connected to a slide groove (14) opened on the sleeve (13), and the slide groove (14) is slidably connected to the sleeve (13). ) is provided with an annular groove (15) rotatably connected to the connecting ring (9), a pressure plate (16) is fixedly connected to the sleeve block (13), a block (18) is fixedly connected to the sleeve block (13), a screw groove (19) is provided on the block (18), an opening (21) that matches the size of the screw groove (19) is provided on both the U-shaped frame 1 (4) and the U-shaped frame 2 (5), a bolt (20) passes through the opening (21), and the end of the bolt (20) is screwed into the screw groove (19) by a thread, an inclined pull rod (22) is fixedly connected to the base (1), a baffle (24) that abuts against the U-shaped frame 1 (4) and the U-shaped frame 2 (5) is fixedly connected to the base (1), and an adjusting member for adjusting the position of the mold (49) on the rotating roller (7) is provided between the U-shaped frame 1 (4) and the U-shaped frame 2 (5); The adjusting member includes a screw rod (25) rotatably connected between the bending parts of the U-shaped frame (5), one end of the screw rod (25) is fixedly connected to a handle (31), a round rod (26) is fixedly connected between the bending parts of the U-shaped frame (4), the round rod (26) passes through a circular hole (30) provided on the push block (27), the push block (27) is provided with a screw hole (29) connected to the screw rod (25) by a thread, and the base (1) is provided with a limit member that cooperates with the screw rod (25) to limit the position of the U-shaped frame (4) and the U-shaped frame (5); The limiting member includes a bevel gear 1 (32) fixedly connected to the end of the screw 1 (25), the base (1) is provided with a groove 1 (33) and a groove 2 (34) which are interconnected, a protrusion (35) fixedly connected in the groove 1 (33) and the groove 2 (34), the groove 1 (33) and the groove 2 (34) cooperate with the protrusion (35) to form a U-shaped groove, and the vertical heights of the two ends of the U-shaped groove are different, the upper surface of the protrusion (35) is in contact with a movable plate (36), the end of the movable plate (36) is fixedly connected with a bent plate (37), the push block (27) is provided with a notch (28), the bending part of the bent plate (37) is in contact with the side wall of the connecting plate (6) through the notch (28), the groove 1 (33) is rotatably connected to the screw 2 (40 ), a convex ring (42) is fixedly connected to the screw rod 2 (40) at a position lower than the upper surface of the convex block (35), a vertical block (41) connected to the convex ring (42) is fixedly connected to the outer wall of the slot 1 (33), the screw rod 2 (40) passes through the vertical hole (45) opened on the bevel gear 2 (44), a vertical groove (46) is opened on the inner wall of the vertical hole (45) and is slidably connected to the vertical block (41), a spring (43) is provided on the outer sleeve of the screw rod 2 (40), a vertical rod (47) is fixedly connected to the slot 2 (34), the vertical rod (47) passes through the circular hole 2 (39) opened on the movable plate (36), the screw rod 2 (40) is connected to the screw hole 2 (38) opened on the movable plate (36) by a thread, and a spring (48) is sleeved on the vertical rod (47).

2. The method for preparing a magnetic separation material for removing heavy metals from soil according to claim 1, characterized in that: The spring 1 (43) pushes the bevel gear 2 (44) to engage with the bevel gear 1 (32). The upper portion of the screw rod 2 (40) is not provided with threads. The spring 2 (48) pushes the movable plate (36) to move upward until the movable plate (36) abuts against the top of the inner wall of the slot 1 (33) and the slot 2 (34). At this time, the movable plate (36) is not connected to the screw rod 2 (40) through threads.

3. The method for preparing a magnetic separation material for removing heavy metals from soil according to claim 2, characterized in that: The end of the pressure plate (16) is fixedly connected to a metal gasket (17) by screws, the outer wall of the slider (8) is fixedly connected to a connecting block (11), the connecting block (11) is fixedly connected to a push rod (12), and the connecting block (11) is slidably connected to the outer wall of the U-shaped frame 1 (4) or the U-shaped frame 2 (5).

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