Multistage magnetic separation roller fine iron powder purification device

Abstract

The invention belongs to the field of fine iron powder purification equipment, and particularly relates to a multistage magnetic separation roller fine iron powder purification device which comprises a magnetic separation box, a lower material guide body is fixedly connected to the bottom of the inner side of the magnetic separation box, a material guide groove is formed in the top of the lower material guide body, and three magnetic separation roller assemblies corresponding to the material guide groove are arranged in the magnetic separation box. Each magnetic separation roller assembly is connected with a rotary driving assembly, an iron powder discharging channel and a sliding hole are formed in the lower material guiding body in a penetrating mode, an iron powder discharging hole corresponding to the iron powder discharging channel is formed in the bottom wall of the magnetic separation box in a penetrating mode, and an iron powder discharging opening is fixedly connected to the position, corresponding to the iron powder discharging hole, of the bottom wall of the magnetic separation box. A vibration block with the V-shaped top is slidably connected into the sliding hole, the lower end of the vibration block penetrates out of the magnetic separation box and is connected with a vibration assembly, a non-magnetic substance discharging channel penetrates through the vibration block, and a supporting assembly is connected to the bottom of the magnetic separation box. The iron powder magnetic separation device is small in occupied area, high in iron powder magnetic separation purity and good in iron powder magnetic separation completeness.

Description

Technical Field

[0001] The invention relates to a multi-stage magnetic separation drum iron ore concentrate purification device, belonging to the field of iron ore concentrate purification equipment. Background Art

[0002] Iron ore concentrate is a powdered, high-purity iron powder with high reducibility, activity, and chemical stability. It is widely used in steel metallurgy, electronic materials, cermets, powder metallurgy, magnetic materials, and other fields. In the production of iron ore concentrate, iron ore undergoes beneficiation after crushing and grinding. Traditionally, the production and beneficiation of iron ore concentrate relies primarily on reverse flotation. However, due to the use of chemical agents in the production process, reverse flotation not only results in high production costs and low yields, but also pollutes the environment. With technological advancements, some manufacturers have begun using drum magnetic separators, which can remove impurities and other non-magnetic substances from the iron ore concentrate, thereby improving the purity and quality of the iron ore concentrate.

[0003] Most existing drum magnetic separators adopt a single drum form. Since only one magnetic separation is performed, some iron powder in the material that is surrounded by non-magnetic substances is not easily adsorbed, resulting in waste. For this reason, the Chinese utility model patent with the authorization announcement number CN201454683U discloses an iron ore dry powder magnetic separator. The above-mentioned prior art selects iron powder multiple times through multiple magnetic separation rollers connected in sequence, thereby ensuring the completeness of iron powder adsorption and preventing the waste of iron powder. However, since the iron powder is output through the discharge belt after each magnetic separation, some non-magnetic substances are easily wrapped in the iron powder magnetically separated by the magnetic separation rollers on the upper layer, thereby reducing the magnetic separation purity of the iron concentrate and affecting the production quality of the iron concentrate; and each magnetic separation roller is equipped with a discharge belt, which will undoubtedly take up a lot of installation space, resulting in a large equipment footprint and a waste of factory space. Summary of the Invention

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a multi-stage magnetic separation drum iron ore concentrate purification device with a small footprint, high magnetic separation purity and good magnetic separation completeness.

[0005] The multi-stage magnetic separation drum iron ore concentrate purification device of the present invention comprises a magnetic separation box, the top of the magnetic separation box is open, the inner bottom of the magnetic separation box is fixedly connected to a lower material guide body, the longitudinal section of the lower material guide body is L-shaped, the top of the lower material guide body is provided with a material guide groove, the material guide groove makes an arc transition at the corner of the lower material guide body, three magnetic separation drum assemblies are provided in the magnetic separation box corresponding to the material guide groove, each magnetic separation drum assembly is connected to a rotary drive assembly, an iron powder discharge channel and a slide hole are passed through the lower material guide body, the iron powder discharge channel corresponds to the magnetic separation drum assembly on the far left, and the slide hole corresponds to the right The two magnetic separation roller assemblies correspond to each other, and the bottom wall of the magnetic separation box is penetrated by an iron powder discharge hole corresponding to the iron powder discharge channel. The corresponding iron powder discharge hole on the bottom wall of the magnetic separation box is fixedly connected with an iron powder discharge port, and a vibration block with a V-shaped top is slidably connected in the sliding hole. The lower end of the vibration block passes through the magnetic separation box and is connected to the vibration assembly. The V-shaped corner of the vibration block is correspondingly arranged under the middle magnetic separation roller assembly. A non-magnetic material discharge channel is penetrated on the vibration block, and the upper port of the non-magnetic material discharge channel is located at the V-shaped corner. The bottom of the magnetic separation box is connected to a support assembly.

[0006] Furthermore, the magnetic separation roller assembly includes a magnetic separation shaft fixedly connected between the front and rear side walls of the magnetic separation box, a magnet mounting bracket fixedly connected to the magnetic separation shaft, a magnet mounted on the magnet mounting bracket, both ends of the magnetic separation shaft are rotatably connected to rotating sleeves, a roller is fixedly connected between the two rotating sleeves, and the rotating sleeve is connected to the rotation drive assembly.

[0007] Furthermore, the rotary drive assembly includes a motor mounting seat, a servo motor is mounted on the motor mounting seat, and the servo motor is connected to each rotating sleeve via a belt.

[0008] Furthermore, sealing strips corresponding to the vibration blocks are embedded around the sliding hole.

[0009] Furthermore, the support assembly includes a support frame, and a plurality of support guide columns are fixedly connected to the support frame, and each support guide column is fixedly connected to the magnetic separation box.

[0010] Furthermore, the vibration assembly includes a lower vibration plate, the top of the lower vibration plate is fixedly connected to the vibration block, the bottom of the lower vibration plate is installed with a vibration motor, the lower vibration plate is penetrated by guide holes corresponding to each support guide column, each support guide column is covered with a vibration spring located between the lower vibration plate and the support frame, the lower vibration plate is also penetrated by a through hole corresponding to the iron powder discharge port and a non-magnetic material drop hole corresponding to the non-magnetic material drop channel, and the lower vibration plate is fixedly connected with a non-magnetic material discharge port corresponding to the non-magnetic material drop hole.

[0011] Furthermore, a plurality of guide rods are fixedly connected to the lower vibration plate, and an upper vibration plate located above the magnetic separation box is fixedly connected between the upper ends of the guide rods. A screening box is fixedly connected to the upper vibration plate, and a feed port is provided at the upper end of the screening box. A screen and an upper material guide body are fixedly connected inside the screening box. A large particle outlet and a small particle outlet are respectively provided on the corresponding screen and the upper material guide body on the screening box, and the small particle outlet corresponds to the upper end of the material guide trough.

[0012] Furthermore, the upper and lower sides of each guide rod are slidably connected with a guide sleeve, and each guide sleeve is fixedly connected to the magnetic separation box.

[0013] Working principle and process:

[0014] When in use, the servo motor is activated, and the rotating sleeves are driven to rotate through the belt, thereby driving the rollers to rotate clockwise. At the same time, the vibration motor is activated, and the lower vibration plate is driven to vibrate up and down under the action of the vibration spring, thereby driving the vibration block to vibrate up and down. At the same time, the lower vibration plate vibrates up and down, and the upper vibration plate is driven to vibrate up and down through the guide rods, thereby driving the screening box to vibrate up and down. The ground iron powder material is added into the screening box through the feed port. Under the action of the screen, large particles of impurities are discharged through the large particle outlet. By screening out large particles of impurities, it can prevent Large particles of impurities cause the device to jam. On the other hand, it can prevent non-magnetic substances from being mixed with large particles of impurities, thereby affecting the purity of the iron powder. At the same time, small particles of powder pass through the screen and fall on the upper guide body, then go down along the inclined surface of the upper guide body, through the small particle outlet and fall into the channel formed between the rightmost magnetic separation roller assembly and the guide trough. Under the action of the magnet, most of the iron powder is adsorbed on the rightmost roller and rotates clockwise with the roller. When it rotates to the left and breaks away from the adsorption of the magnet, the iron powder is separated from the rightmost roller and is separated in the middle magnetic separation roller. Under the action of the magnet of the roller assembly, the iron powder is re-adsorbed on the middle roller, and the non-magnetic substances mixed in the iron powder are separated from the iron powder and fall on the vibrating block. Then the iron powder continues to rotate with the middle roller and is similarly adsorbed on the leftmost roller. After two separations from the magnetic separation, the purity of the iron powder on the leftmost roller can be fully guaranteed. Then the iron powder continues to rotate with the leftmost roller and falls into the iron powder discharge channel after being separated from the magnet, and is then discharged through the iron powder discharge hole and the iron powder discharge port. At the same time, the non-magnetic substances in the small particles of powder are The material falls on the vibrating block through the lower guide body. At the same time, the non-magnetic material that falls off during the second magnetic separation also falls on the V-shaped slope of the vibrating block and moves to the left under the action of vibration. Due to the vibration, the iron powder mixed in the original non-magnetic material and the iron powder accidentally fallen off during the second and third magnetic separations will be separated from the non-magnetic material and adsorbed on the middle roller, and then discharged with the mainstream iron powder, thereby ensuring the completeness of the iron powder magnetic separation. Then the non-magnetic material is discharged through the non-magnetic material feeding channel, non-magnetic material feeding hole and non-magnetic material discharge port.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The multi-stage magnetic separation drum iron ore concentrate purification device of the present invention adopts a vertical feeding form with materials entering from above and exiting from below, and performs magnetic separation through three magnetic separation drum assemblies arranged side by side. It has a compact structure and occupies a small area, thereby effectively saving plant space.

[0017] The multi-stage magnetic separation drum iron ore concentrate purification device of the present invention can effectively remove non-magnetic substances mixed in the iron powder through two separation magnetic separations, thereby fully ensuring the magnetic separation purity of the iron powder and improving the production quality of the iron ore concentrate;

[0018] The multi-stage magnetic separation drum iron ore concentrate purification device described in the present invention can effectively separate and magnetically separate the iron powder mixed in the non-magnetic material by vibrating the non-magnetic material, thereby ensuring the completeness of the magnetic separation of the iron powder and effectively preventing the waste of iron powder due to missed selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 is a top view of the present invention;

[0022] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle;

[0023] Figure 5 yes Figure 4 Enlarged view of the M in the middle;

[0024] Figure 6 yes Figure 4 Enlarged view of point N in the middle.

[0025] In the figure: 1. Support frame; 2. Servo motor; 3. Motor mounting seat; 4. Vibration spring; 5. Lower vibration plate; 6. Support guide column; 7. Guide sleeve; 8. Guide rod; 9. Magnetic separation box; 10. Magnetic separation shaft; 11. Rotating sleeve; 12. Large particle outlet; 13. Upper vibration plate; 14. Screening box; 15. Feed inlet; 16. Vibration motor; 17. Iron powder outlet; 18. Non-magnetic material outlet; 19. Vibration block; 20. Iron powder discharge channel; 21. Lower guide body; 22. Guide trough; 23. Slide hole; 24. Magnet mounting frame; 25. Magnet; 26. Small particle outlet; 27. Upper guide body; 28. Screen; 29. Drum; 30. Iron powder discharge hole; 31. Through hole; 32. Non-magnetic material discharge channel; 33. Non-magnetic material discharge hole; 34. Sealing strip. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0027] Example 1:

[0028] like Figures 1 to 6 As shown, the multi-stage magnetic separation drum iron ore concentrate purification device of the present invention includes a magnetic separation box 9, the top of the magnetic separation box 9 is open, and the inner bottom of the magnetic separation box 9 is fixedly connected to a lower material guide body 21, the longitudinal cross-section of the lower material guide body 21 is L-shaped, and a material guide groove 22 is provided on the top of the lower material guide body 21. The material guide groove 22 makes an arc transition at the corner of the lower material guide body 21, and three magnetic separation drum assemblies are provided in the magnetic separation box 9 corresponding to the material guide groove 22. Each magnetic separation drum assembly is connected to a rotary drive assembly, and an iron powder discharge channel 20 and a slide hole 23 are passed through the lower material guide body 21. The iron powder discharge channel 20 corresponds to the magnetic separation drum assembly on the far left, and the slide hole 23 corresponds to the right The two magnetic separation roller assemblies on the side correspond to each other, and the bottom wall of the magnetic separation box 9 is penetrated by an iron powder discharge hole 30 corresponding to the iron powder discharge channel 20. The corresponding iron powder discharge hole 30 on the bottom wall of the magnetic separation box 9 is fixedly connected with an iron powder discharge port 17, and a vibration block 19 with a V-shaped top is slidably connected in the slide hole 23. The lower end of the vibration block 19 passes through the magnetic separation box 9 and is connected to the vibration assembly. The V-shaped corner of the vibration block 19 is correspondingly arranged under the middle magnetic separation roller assembly. A non-magnetic material discharge channel 32 is penetrated by the vibration block 19, and the upper port of the non-magnetic material discharge channel 32 is located at the V-shaped corner. The bottom of the magnetic separation box 9 is connected to a support assembly.

[0029] When in use, the rotary drive assembly is used to drive each magnetic separation roller assembly to work, and at the same time the vibration assembly drives the vibration block 19 to vibrate up and down; the ground iron powder material is added to the channel formed between the rightmost magnetic separation roller assembly and the guide trough 22, and most of the iron powder is magnetically separated by the rightmost magnetic separation roller assembly, and then passes through the middle magnetic separation roller assembly and the leftmost magnetic separation roller assembly in turn. After two separations, the magnetic separation purity of the iron powder can be fully guaranteed, and then the magnetically separated iron fine powder falls into the iron powder discharge channel 20, and is then discharged through the iron powder discharge hole 30 and the iron powder discharge port 17; at the same time, the small The non-magnetic material in the granular powder falls onto the vibration block 19 through the lower guide body 21. At the same time, the non-magnetic material that falls off during the second and third magnetic separations also falls on the V-shaped slope of the vibration block 19 and moves toward the non-magnetic material discharge channel 32 under the action of vibration. Due to the vibration, the iron powder mixed in the original non-magnetic material and the iron powder accidentally fallen off during the second and third magnetic separations will be separated from the non-magnetic material, and then magnetically separated by the middle magnetic separation roller assembly and output with the mainstream iron powder, thereby ensuring the completeness of the iron powder magnetic separation. Then the non-magnetic material is discharged through the non-magnetic material discharge channel 32.

[0030] Example 2:

[0031] like Figures 1 to 6 As shown, based on Example 1,

[0032] Furthermore, the magnetic separation roller assembly includes a magnetic separation shaft 10 fixedly connected between the front and rear side walls of the magnetic separation box 9. A magnet mounting bracket 24 is fixedly connected to the magnetic separation shaft 10, and a magnet 25 is mounted on the magnet mounting bracket 24. Both ends of the magnetic separation shaft 10 are rotatably connected to a rotating sleeve 11. A roller 29 is fixedly connected between the two rotating sleeves 11, and the rotating sleeve 11 is connected to a rotary drive assembly. The magnet 25 is used to adsorb iron powder to the corresponding area of the roller 29. The rotation of the drive assembly can drive the rotating sleeve 11 to rotate, thereby driving the roller 29 to rotate, so that the iron powder can be transported within the range of action of the magnet 25.

[0033] Furthermore, the rotary drive assembly includes a motor mounting base 3, on which a servo motor 2 is mounted. The servo motor 2 is connected to each rotating sleeve 11 via a belt. When the servo motor 2 is actuated, the rotating sleeve 11 is driven to rotate via the belt, thereby driving the roller 29.

[0034] Furthermore, sealing strips 34 corresponding to the vibration block 19 are embedded around the sliding hole 23. The sealing strips 34 can seal the sliding hole 23 to prevent the powder from spilling.

[0035] Furthermore, the support assembly includes a support frame 1, and a plurality of support guide pillars 6 are fixedly connected to the support frame 1, and each support guide pillar 6 is fixedly connected to the magnetic separation box 9. The magnetic separation box 9 can be stably supported by the support frame 1 and the plurality of support guide pillars 6.

[0036] Furthermore, the vibration assembly includes a lower vibration plate 5, the top of which is fixedly connected to the vibration block 19, a vibration motor 16 is installed at the bottom of the lower vibration plate 5, and the lower vibration plate 5 is penetrated by a guide hole corresponding to each support guide column 6, and each support guide column 6 is sleeved with a vibration spring 4 located between the lower vibration plate 5 and the support frame 1. The lower vibration plate 5 is also penetrated by a through hole 31 corresponding to the iron powder discharge port 17 and a non-magnetic material drop hole 33 corresponding to the non-magnetic material drop channel 32, and the lower vibration plate 5 is fixedly connected to the non-magnetic material discharge port 18 corresponding to the non-magnetic material drop hole 33. Through the operation of the vibration motor 16, under the action of the vibration spring 4, the lower vibration plate 5 can be driven to vibrate up and down, thereby driving the vibration block 19 to vibrate up and down. Through the cooperation of the support guide column 6 and the guide hole, the lower vibration plate 5 can be guided, thereby guiding the vibration block 19, ensuring the operational stability of the vibration block 19.

[0037] Furthermore, a plurality of guide rods 8 are fixedly connected to the lower vibration plate 5, and an upper vibration plate 13 located above the magnetic separation box 9 is fixedly connected between the upper ends of the guide rods 8. A screening box 14 is fixedly connected to the upper vibration plate 13, and a feed port 15 is provided at the upper end of the screening box 14. A screen 28 and an upper material guide body 27 are fixedly connected inside the screening box 14. The corresponding screen 28 and the upper material guide body 27 on the screening box 14 are respectively provided with a large particle outlet 12 and a small particle outlet 26, and the small particle outlet 26 corresponds to the upper end of the material guide trough 22. The vibration of the screening box 14 can remove large particle impurities in the material. On the one hand, it can prevent large particle impurities from causing the device to jam, and on the other hand, it can prevent non-magnetic substances from being mixed in the large particle impurities, thereby affecting the purity of the iron powder. In addition, by connecting the magnetic separation box 9 to the lower vibration plate 5, the two can share a set of vibration components, thereby effectively reducing energy consumption.

[0038] Furthermore, the upper and lower sides of each guide rod 8 are slidably connected with a guide sleeve 7, and each guide sleeve 7 is fixedly connected to the magnetic separation box 9. The guide sleeve 7 guides the guide rod 8, effectively improving the stability of the two guide rods 8, thereby improving the operating stability of the screening box 14.

Claims

1. A multi-stage magnetic separation drum iron ore concentrate purification device, characterized by: The invention comprises a magnetic separation box (9), wherein the inner bottom of the magnetic separation box (9) is fixedly connected with a lower material guide body (21), the top of the lower material guide body (21) is provided with a material guide groove (22), three magnetic separation roller assemblies are provided in the magnetic separation box (9) corresponding to the material guide groove (22), each magnetic separation roller assembly is connected with a rotary drive assembly, an iron powder discharge channel (20) and a slide hole (23) are passed through the lower material guide body (21), and a bottom wall of the magnetic separation box (9) is passed through with a (20) corresponding iron powder discharge hole (30), the iron powder discharge port (17) is fixedly connected to the corresponding iron powder discharge hole (30) on the bottom wall of the magnetic separation box (9), a vibration block (19) with a V-shaped top is slidably connected in the sliding hole (23), the lower end of the vibration block (19) passes through the magnetic separation box (9) and is connected to a vibration component, a non-magnetic material discharge channel (32) passes through the vibration block (19), and the bottom of the magnetic separation box (9) is connected to a support component.

2. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 1, characterized in that: The magnetic separation roller assembly comprises a magnetic separation shaft (10) fixedly connected between the front and rear side walls of the magnetic separation box (9), a magnet mounting frame (24) fixedly connected to the magnetic separation shaft (10), a magnet (25) mounted on the magnet mounting frame (24), a rotating sleeve (11) rotatably connected at both ends of the magnetic separation shaft (10), a roller (29) fixedly connected between the two rotating sleeves (11), and the rotating sleeve (11) connected to the rotation drive assembly.

3. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 2, characterized in that: The rotary drive assembly comprises a motor mounting seat (3), a servo motor (2) is mounted on the motor mounting seat (3), and the servo motor (2) and each rotating sleeve (11) are connected via a belt.

4. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 1, characterized in that: The sliding hole (23) is surrounded by sealing strips (34) corresponding to the vibration block (19).

5. The multi-stage magnetic separation drum iron ore concentrate purification device according to any one of claims 1 to 4, characterized in that: The support assembly comprises a support frame (1), a plurality of support guide pillars (6) are fixedly connected to the support frame (1), and each support guide pillar (6) is fixedly connected to the magnetic separation box (9).

6. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 5, characterized in that: The vibration assembly includes a lower vibration plate (5), the top of the lower vibration plate (5) is fixedly connected to the vibration block (19), the bottom of the lower vibration plate (5) is equipped with a vibration motor (16), the lower vibration plate (5) is penetrated by a guide hole corresponding to each support guide column (6), each support guide column (6) is sleeved with a vibration spring (4) located between the lower vibration plate (5) and the support frame (1), the lower vibration plate (5) is also penetrated by a through hole (31) corresponding to the iron powder discharge port (17) and a non-magnetic material drop hole (33) corresponding to the non-magnetic material drop channel (32), and the lower vibration plate (5) is fixedly connected with a non-magnetic material discharge port (18) corresponding to the non-magnetic material drop hole (33).

7. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 6, characterized in that: A plurality of guide rods (8) are fixedly connected to the lower vibration plate (5), an upper vibration plate (13) located above the magnetic separation box (9) is fixedly connected between the upper ends of the guide rods (8), a screening box (14) is fixedly connected to the upper vibration plate (13), a feed port (15) is provided at the upper end of the screening box (14), a screen (28) and an upper material guide body (27) are fixedly connected inside the screening box (14), a large particle outlet (12) and a small particle outlet (26) are respectively provided on the screening box (14) corresponding to the screen (28) and the upper material guide body (27), and the small particle outlet (26) corresponds to the upper end of the material guide trough (22).

8. The multi-stage magnetic separation drum iron ore concentrate purification device according to claim 7, characterized in that: The upper and lower sides of each guide rod (8) are slidably connected to a guide sleeve (7), and each guide sleeve (7) is fixedly connected to the magnetic separation box (9).

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