A magnetic separation device for ore

Abstract

The utility model provides an ore magnetic separation device, including: a box body, a first magnetic roller located below the first feed port and a second magnetic roller located below the second feed port are rotatably installed inside the box body, a first scraper plate located between the first magnetic roller and the second magnetic roller is installed above the inside of the box body, the front ends of the left and right sides of the first scraper plate respectively maintain a predetermined distance from the outer circumferential surfaces of the first magnetic roller and the second magnetic roller, and the output shafts of the two drive motors pass through the box body wall and are respectively connected to one end of the first magnetic roller and the second magnetic roller. This device can use the mobile material dividing triangular prism to divide the material into two equal parts and add them into the box body at the same time for simultaneous magnetic separation by the first magnetic separation roller, the second magnetic separation roller and the first scraper plate. The material can be divided into two parts for simultaneous magnetic separation, and the magnetic separation time is shortened by half, which speeds up the magnetic separation speed and improves the magnetic separation efficiency.

Description

Technical Field

[0001] The utility model relates to the field of ore production, in particular to an ore magnetic separation device. Background Art

[0002] Magnetic separation, also known as magnetic separation, is a method of separating minerals in a magnetic field by utilizing the magnetic differences of various minerals. Due to its unique magnetic properties, iron ore can be separated from ore mixtures using the principle of separation. Ore magnetic separation devices are generally used in the industry for magnetic separation.

[0003] The utility model patent with application number 201010619815.X discloses an iron ore magnetic separation device. By setting up magnetic separation rollers and iron unloading scrapers and other devices, the material falls from the feed port to the upper part of the left half of the magnetic separation roller. As the magnetic separation roller rotates, the iron ore is adsorbed onto the roller, and the material slag flows out through the stone powder outlet under the action of gravity. The iron ore continues to rotate with the magnetic separation roller to the back of the magnetic separation roller, is scraped off by the iron unloading scraper, and falls into the iron concentrate outlet, thus completing the separation of ore and slag. There are still certain shortcomings in the above design. During the magnetic separation of the existing iron ore magnetic separation device, materials can only be added from the feed port in sequence and at a certain speed for magnetic separation. The material addition speed affects the magnetic separation speed, and the working efficiency is not high.

[0004] Therefore, it is necessary to provide an ore magnetic separation device to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide an ore magnetic separation device which can solve the problem that during magnetic separation in the existing iron ore magnetic separation device, materials can only be added from a feed port in sequence and at a certain speed for magnetic separation, the material addition speed affects the magnetic separation speed, and the working efficiency is low.

[0006] In order to solve the above technical problems, the utility model provides an ore magnetic separation device, comprising: a box body, the box body is arranged to be a box body structure with an upper end opening, a main feeding port is installed on the top of the box body, and sliding grooves are opened on the front and rear sides of the main feeding port, and a material dividing triangular prism is slidably installed in the main feeding port through two sliding grooves, and sliding blocks slidably installed in the sliding grooves are arranged on both side surfaces of the material dividing triangular prism. A driving screw is rotatably installed on one side of the main feeding port, and the driving screw is driven to rotate by a screw motor installed on the main feeding port, and the sliding block on one side passes through the sliding groove and is threadedly connected to the driving screw. The material dividing triangular prism divides the upper end opening of the box body into a first feeding port and a second feeding port, and the two waists of the material dividing triangular prism face the first feeding port and the second feeding port respectively, and baffle plates are arranged on the two inner sides of the main feeding port. A first magnetic roller located below the first feed port and a second magnetic roller located below the second feed port are rotatably installed in the box body, a force measuring ring is rotatably installed at the connection between the box body and the first magnetic roller and the second magnetic roller, both ends of the first magnetic roller and the second magnetic roller are rotatably installed in the force measuring ring, a material slag outlet located below the first magnetic roller and the second magnetic roller is opened on the lower end surface of the box body, and an iron ore lower outlet is opened between the two material slag outlets, a first scraper plate located between the first magnetic roller and the second magnetic roller is installed on the upper part of the box body, and the left and right front ends of the first scraper plate respectively maintain a predetermined distance from the outer circumferential surface of the first magnetic roller and the second magnetic roller, and two driving motors are installed on the outside of the box body, and the output shafts of the two driving motors pass through the box body wall and are respectively connected to one end of the first magnetic roller and the second magnetic roller.

[0007] Preferably, the first scraper plate is arranged as an inverted "Y" shaped structure, the upper end of the first scraper plate is mounted on the upper end surface of the box body, and the front ends of the two side legs of the lower end of the first scraper plate respectively maintain a predetermined distance from the outer surfaces of the first magnetic suction roller and the second magnetic suction roller.

[0008] Preferably, the first magnetic roller and the second magnetic roller each include an intermediate shaft, a support roller and a magnetic layer, the intermediate shaft is mounted with a support roller, the circumferential surface of the support roller is coated with a magnetic layer, the two ends of the intermediate shaft are respectively mounted on the side edges of the corresponding sides of the box body, and the left and right front ends of the first scraper plate respectively maintain a predetermined distance from the magnetic layers of the first magnetic roller and the second magnetic roller.

[0009] Preferably, a third magnetic roller located directly below the first magnetic roller and a fourth magnetic roller located directly below the second magnetic roller are rotatably installed inside the box body, and an intermediate iron ore outlet is provided on the left and right side walls of the box body, and an intermediate through slot located in the middle of the four magnetic rollers is connected and installed between the two intermediate iron ore outlets, a material slag outlet located below the third magnetic roller and the fourth magnetic roller is provided on the lower end surface of the box body, and an iron ore lower outlet is provided between the two material slag outlets, and a second scraper plate located between the third magnetic roller and the fourth magnetic roller is installed on the lower end surface of the intermediate through slot, and the left and right front ends of the second scraper plate respectively maintain a predetermined distance from the outer circumferential surface of the third magnetic roller and the fourth magnetic roller, and two driving motors are installed on the outside of the box body, and the output shafts of the two driving motors pass through the box body wall and are respectively connected to one end of the third magnetic roller and the fourth magnetic roller, and the third magnetic roller drives the first magnetic roller through a belt, and the fourth magnetic roller drives the second magnetic roller through a belt.

[0010] Preferably, the middle through slot includes a bottom plate and two side plates, the two side plates are arranged on both sides of the bottom plate, the bottom plate is arranged in an inverted "V" shape, and the openings at both ends of the middle through slot are respectively installed at the middle outlet of the iron ore on the corresponding side.

[0011] Preferably, the second scraper plates are arranged as an inverted "Y" shaped structure, the upper end of the second scraper plates are mounted on the lower end surface of the middle through groove, and the front ends of the two side legs of the lower end of the second scraper plates respectively maintain a predetermined distance from the outer surfaces of the third magnetic roller and the fourth magnetic roller.

[0012] Preferably, the third magnetic roller and the fourth magnetic roller both include an intermediate shaft, a support roller and a magnetic layer, the intermediate shaft is provided with a support roller, the circumferential surface of the support roller is covered with a magnetic layer, the two ends of the intermediate shaft are respectively provided on the side edges of the corresponding sides of the box body, and the left and right front ends of the second scraper plate respectively maintain a predetermined distance from the magnetic layers of the third magnetic roller and the fourth magnetic roller.

[0013] Preferably, two partitions are provided on the bottom surface of the box body, and the two partitions are respectively arranged between the lower iron ore outlet and the two material slag outlets, and the two partitions are respectively used to separate the lower iron ore outlet and the two material slag outlets.

[0014] Preferably, a seat plate is installed on the outer side surface of the lower end of the box body, and four supporting legs are installed on the bottom of the seat plate.

[0015] Compared with the related art, the ore magnetic separation device provided by the utility model has the following beneficial effects:

[0016] (1) The device can divide the material into two equal parts by the mobile material dividing triangular prism and add them into the box body at the same time, and magnetic separation is carried out simultaneously by the first magnetic separation roller, the second magnetic separation roller and the first scraper plate. The material can be magnetically separated in two parts at the same time, and the magnetic separation time is shortened by half, which speeds up the magnetic separation speed and improves the magnetic separation efficiency.

[0017] (2) The third and fourth magnetic separation rollers are arranged in the device. The material slag falling from both sides is then subjected to secondary magnetic separation and screening by the third and fourth magnetic suction rollers arranged below using the same working principle to magnetically separate the remaining iron ore. The magnetically separated iron ore falls out from the lower outlet of the iron ore, and the material slag flows out from the material slag outlets on both sides by gravity, thereby ensuring that the iron ore is magnetically separated in place and will not be wasted.

[0018] (3) The bottom plate of the middle through groove of the device is set in an inverted "V" shape, so that the middle height of the two ends of the bottom plate is higher than the height of the two ends. The iron ore falls on the bottom plate and slides out to the ports on both sides, preventing the iron ore from accumulating on the bottom plate, which is convenient for collecting the iron ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of an ore magnetic separation device provided by the utility model;

[0020] Figure 2 A side view of an ore magnetic separation device provided by the utility model;

[0021] Figure 3 A schematic diagram of the internal structure of an ore magnetic separation device after cutting provided by the utility model;

[0022] Figure 4 A schematic diagram of the structure of a box body and an intermediate channel after being cut off provided by the utility model;

[0023] Figure 5 A schematic diagram of the structure of a first magnetic roller, a second magnetic roller, a third magnetic roller, or a fourth magnetic roller of an ore magnetic separation device provided by the utility model;

[0024] Figure 6 The utility model provides a schematic diagram of the force measuring ring structure of an ore magnetic separation device.

[0025] Numbers in the figure: 1. box body, 2. first feed port, 3. second feed port, 4. first magnetic roller, 5. second magnetic roller, 6. material slag outlet, 7. first scraper plate, 8. drive motor, 9. lower outlet of iron ore, 10. intermediate shaft, 11. support roller, 12. magnetic layer, 13. third magnetic roller, 14. fourth magnetic roller, 15. middle outlet of iron ore, 16. middle through groove, 161. bottom plate, 162. side plate, 17. second scraper plate, 18. partition, 19. seat plate, 20. support foot, 21. main feed port, 22. material dividing triangular prism, 23. material baffle plate, 24. sliding groove, 25. slider, 26. drive screw, 27. screw motor, 28. force measuring ring. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Example 1

[0028] like Figure 1-5As shown, an ore magnetic separation device comprises: a box body 1, the box body 1 is set to a box structure with an upper end opening, a main feed port 21 is installed on the top of the box body 1, and sliding grooves 24 are opened on the front and rear sides of the main feed port 21, and a material distribution triangular prism 22 is slidably installed in the main feed port 21 through two sliding grooves 24, and sliders 25 slidably installed in the sliding grooves 24 are provided on both sides of the triangular prism 22, and a driving screw 26 is rotatably installed on one side of the main feed port 21, and the driving screw 26 is installed in the main feed port 21. The screw motor 27 on the opening 21 drives the rotation, and the slider 25 on one side passes through the sliding groove 24 and is threadedly connected to the driving screw 26. The material-dividing triangular prism 22 divides the upper end opening of the box body 1 into a first feeding port 2 and a second feeding port 3. The two waists of the material-dividing triangular prism 22 face the first feeding port 2 and the second feeding port 3 respectively. A first magnetic suction roller 4 located below the first feeding port 2 and a second magnetic suction roller 5 located below the second feeding port 3 are rotatably installed inside the box body 1. The rotation of the driving screw 26 drives the material-dividing triangular prism 22 to slide The material separation triangular prism 22 can be moved in the movable groove 24 to adjust the position of the material separation triangular prism 22 on the box body 1, thereby adjusting the size of the first feeding port 2 and the second feeding port 3, so that the total amount of feed of the first feeding port 2 and the second feeding port 3 is the same, and the magnetic separation workload of the first magnetic suction roller 4 and the second magnetic suction roller 5 is balanced, the working environment is improved, and the magnetic separation efficiency is improved. The lower end surface of the box body 1 is provided with a material slag outlet 6 located below the first magnetic suction roller 4 and the second magnetic suction roller 5, and an iron ore lower outlet 9 is provided between the two material slag outlets 6. A material slag outlet 6 located below the first magnetic suction roller 4 and the second magnetic suction roller 5 is installed on the upper part of the box body 1. A first scraper plate 7 is provided between a magnetic roller 4 and the second magnetic roller 5, and the front ends of the left and right sides of the first scraper plate 7 respectively maintain a predetermined distance from the outer circumferential surfaces of the first magnetic roller 4 and the second magnetic roller 5, so as to scrape off the iron ore adsorbed on the outer surfaces of the first magnetic roller 4 and the second magnetic roller 5 when the first magnetic roller 4 and the second magnetic roller 5 rotate. Two drive motors 8 are installed on the outside of the box body 1, and the output shafts of the two drive motors 8 pass through the wall of the box body 1 and are respectively connected to one end of the first magnetic roller 4 and the second magnetic roller 5.The material is added from the main feed port 21, and the material is evenly divided into two parts by the material dividing triangular prism 22, and the materials enter the box body 1 from the first feed port 2 and the second feed port 3 respectively. The material dividing triangular prism 22 has the advantage of being set as a quadrangular prism structure in that it can prevent the material from accumulating at the bottom of the main feed port 21, and can conveniently divide a portion of material that needs magnetic separation into two approximately equal portions to facilitate the subsequent simultaneous processing of the two portions of material, speed up the magnetic separation speed of the material, and improve work efficiency. The two drive motors 8 respectively drive the connected magnetic suction rollers to rotate in a predetermined direction, so that the material falling from the first feed port 2 falls onto one side of the first magnetic separation roller 4, and the material falling from the second feed port 3 falls onto the second On one side of the magnetic separation roller 5, as the two magnetic separation rollers rotate, the iron ore is adsorbed onto the roller, and the material slag flows out through the material slag outlets 6 on both sides under the action of gravity, and the adsorbed iron ore continues to rotate with the two magnetic separation rollers to the back of the two magnetic separation rollers. Since a certain small gap is maintained between the first scraper plate 7 and the first magnetic separation roller 4 and the second magnetic separation roller 5 without contact, the first scraper plate 7 is prevented from rubbing against the surfaces of the two magnet rods when the two magnet rods rotate. However, this small gap is sufficient to ensure that the iron ore on the two magnet rollers can be contacted and scraped off by the first scraper plate 7, and the iron ore scraped off by the first scraper plate 7 falls into the lower outlet 9 of the iron ore and flows out, thereby completing the separation of ore and slag. The material can enter from the first feed port 2 and be magnetically separated by the first magnetic separation roller 4 and the first scraper plate 7, or it can enter from the second feed port 3 and be magnetically separated by the second magnetic separation roller 5 and the first scraper plate 7 at the same time. The material can be magnetically separated in two parts at the same time, which speeds up the magnetic separation speed and improves the magnetic separation efficiency. The two inner sides of the main feed port 21 are provided with baffle plates 23 to prevent the material from flowing out from the gap between the first magnetic roller 4, the second magnetic roller 5 and the inner wall of the box body 1 without passing through the magnetic separation of the first magnetic roller 4 and the second magnetic roller 5. The lower ends of the two baffle plates 2 are respectively facing the oblique upper part of the first magnetic roller 4 and the second magnetic roller 5, so that the material flows down from the two baffle plates 2 to the surface of the first magnetic roller 4 and the second magnetic roller 5 for magnetic separation, saving materials. The box body 1 is equipped with a force measuring ring 28 at the rotation connection with the first magnetic roller 4 and the second magnetic roller 5.

[0029] like Figure 6As shown, the box body 1 is provided with mounting holes for rotatably mounting the first magnetic roller 4 and the second magnetic roller 5, and a force measuring ring 28 is rotatably mounted in each mounting hole through a bearing. The first magnetic roller 4 and the second magnetic roller 5 are mounted on the inner hole of the force measuring ring 28 and rotate together with the force measuring ring 28. A pressure sensing sheet is arranged on the inner circumference of the force measuring ring 28, and the pressure sensing sheet is against the outer circumference of the first magnetic roller 4 and the second magnetic roller 5. When the first magnetic roller 4 and the second magnetic roller 5 are magnetically separated, the gravity and centrifugal force of the first magnetic roller 4 and the second magnetic roller 5 are detected to judge the weight of the first magnetic roller 4 and the second magnetic roller 5 and the iron ore magnetically attracted thereon at this time, so as to judge the amount of iron ore adsorbed on the first magnetic roller 4 and the second magnetic roller 5 respectively, so as to judge the working load size of the first magnetic roller 4 and the second magnetic roller 5 respectively. When the working load of the first magnetic roller 4 and the second magnetic roller 5 is uneven, the driving screw 26 is controlled to drive the material dividing triangular prism 22 to slide.

[0030] Example 2

[0031] like Figure 3 As shown, the first scraper plate 7 is configured as an inverted "Y" shaped structure, the upper end of the first scraper plate 7 is mounted on the upper end surface of the box body 1, and the front ends of the legs on both sides of the lower end of the first scraper plate 7 respectively maintain a predetermined distance from the outer surfaces of the first magnetic roller 4 and the second magnetic roller 5. The "Y" shaped structure makes the first scraper plate 7 symmetrical in structure and evenly stressed, and can be integrally formed by casting during production, which is convenient for production and manufacturing.

[0032] Example 3

[0033] like Figure 3 and Figure 5 As shown, the first magnetic roller 4 and the second magnetic roller 5 both include an intermediate shaft 10, a support roller 11 and a magnetic layer 12. The support roller 11 is installed on the intermediate shaft 10, and the circumferential surface of the support roller 11 is coated with the magnetic layer 12. The two ends of the intermediate shaft 10 are respectively installed on the side edges of the corresponding sides of the box body 1, and the front ends of the left and right sides of the first scraper plate 7 respectively maintain a predetermined distance from the magnetic layer 12 of the first magnetic roller 4 and the second magnetic roller 5. It is convenient to disassemble and assemble the support roller 11 and the magnetic layer 12, and it is very convenient to replace each part. Moreover, the coating of the magnetic layer 12 avoids the need for the entire support roller 11 to be made of magnetic material, which saves costs.

[0034] Example 4

[0035] like Figure 3As shown, a third magnetic roller 13 located directly below the first magnetic roller 4 and a fourth magnetic roller 14 located directly below the second magnetic roller 5 are rotatably installed inside the box body 1, and iron ore intermediate outlets 15 are opened on the left and right side walls of the box body 1. An intermediate through groove 16 located in the middle of the four magnetic rollers is connected between the two iron ore intermediate outlets 15, and the iron ore scraped from the first scraper plate 7 falls into the intermediate through groove 16 and then flows out from the intermediate outlets 15 at both ends. The lower end surface of the box body 1 is provided with a material slag outlet 6 located below the third magnetic roller 13 and the fourth magnetic roller 14, and a lower iron ore outlet 9 is provided between the two material slag outlets 6. The lower end surface of the intermediate through groove 16 is provided with a second scraper plate 17 located between the third magnetic roller 13 and the fourth magnetic roller 14. The front ends of the left and right sides of the second scraper plate 17 respectively maintain a predetermined distance from the outer circumferential surface of the third magnetic roller 13 and the fourth magnetic roller 14, and are respectively used to scrape off the iron ore adsorbed on the outer surfaces of the third magnetic roller 13 and the fourth magnetic roller 14 when the third magnetic roller 13 and the fourth magnetic roller 14 rotate. Two drive motors 8 are installed outside the box body 1, and the output shafts of the two drive motors 8 pass through the wall of the box body 1 and are respectively connected to one end of the third magnetic roller 13 and the fourth magnetic roller 14. The third magnetic roller 13 drives the first magnetic roller 4 through a belt, and the fourth magnetic roller 14 drives the second magnetic roller 5 through a belt. After the material is screened by the first magnetic roller 4 and the second magnetic roller 5 above, a certain amount of iron ore will inevitably remain in the material slag and flow out with the material slag. At this time, the material slag falling from both sides passes through the third magnetic roller 13 and the fourth magnetic roller 14 arranged below for secondary magnetic separation and screening using the same working principle to magnetically separate the remaining iron ore. The magnetically separated iron ore falls out from the lower iron ore outlet 9, and the material slag flows out from the material slag outlets on both sides by gravity, ensuring that the iron ore is magnetically separated and not wasted.

[0036] Example 5

[0037] like Figure 4 As shown, the middle slot 16 includes a bottom plate 161 and two side plates 162, the two side plates 162 are arranged on both sides of the bottom plate 161, the bottom plate 161 is arranged in an inverted "V" shape, and the openings at both ends of the middle slot 16 are respectively installed at the iron ore middle outlet 15 on the corresponding side. The inverted "V" shape of the bottom plate 161 makes the middle height of the two ends of the bottom plate higher than the height of the two ends, and the iron ore falls on the bottom plate 161 and slides out to the ports on both sides, preventing the iron ore from accumulating on the bottom plate 161, which is convenient for iron ore collection.

[0038] Example 6

[0039] like Figure 3As shown, the second scraper plates 17 are arranged as an inverted "Y" shaped structure, the upper end of the second scraper plates 17 is installed on the lower end surface of the middle through groove 16, and the front ends of the two side legs of the lower end of the second scraper plates 17 respectively maintain a predetermined distance from the outer surfaces of the third magnetic roller 13 and the fourth magnetic roller 14.

[0040] Example 7

[0041] Such as 3 and Figure 5 As shown, the third magnetic roller 13 and the fourth magnetic roller 14 both include an intermediate shaft 10, a support roller 11 and a magnetic layer 12. The support roller 11 is installed on the intermediate shaft 10, and the circumferential surface of the support roller 11 is coated with the magnetic layer 12. The two ends of the intermediate shaft 10 are respectively installed on the side edges of the corresponding sides of the box body 1, and the left and right front ends of the second scraper plate 17 respectively maintain a predetermined distance from the magnetic layers 12 of the third magnetic roller 13 and the fourth magnetic roller 14.

[0042] Example 8

[0043] like Figure 3 As shown, two partitions 18 are arranged on the bottom surface of the box body 1, and the two partitions 18 are respectively arranged between the lower outlet 9 of the iron ore and the two material slag outlets 6. The two partitions 18 are respectively used to separate the lower outlet 9 of the iron ore and the two material slag outlets 6 to prevent the material slag and the iron ore from being mixed and maintain the purity of the iron ore.

[0044] Example 9

[0045] like Figure 1 and Figure 2 As shown, a seat plate 19 is installed on the outer side of the lower end of the box body 1, and four legs 20 are installed at the bottom of the seat plate 19. The box body 1 is installed on the seat plate 19, and the four legs 20 support the box body 1 so that the box body 1 has a certain height from the ground, which is convenient for setting a collection device at the lower end of the box body 1 or manually collecting the fallen iron ore and material slag.

[0046] The working principle of an ore magnetic separation device provided by the utility model is as follows:

[0047] The device also includes a control system. When in use, the drive motor 8 is first started. The two drive motors 8 drive the connected magnetic suction rollers to rotate in a predetermined direction respectively. The material is poured in from the main feed port 21. After being evenly divided by the material dividing triangular prism 22, the material falls from the first feed port 2 to the upper side of the first magnetic separation roller 4. The material falling from the second feed port 3 falls to the upper side of the second magnetic separation roller 5. As the first magnetic separation roller 4 and the second magnetic separation roller 5 rotate, the iron ore is adsorbed onto the rollers. In this process, the force measuring ring 28 detects whether the iron ore on the first magnetic separation roller 4 and the second magnetic separation roller 5 is equal, and transmits the signal to the control system. The control system controls the movement of the material dividing triangular prism 22 according to the signal. Thereby, the feed amount of the first feed port 2 and the second feed port 3 is balanced, and the adsorbed iron ore continues to rotate to the back side, and the iron ore scraped off by the first scraper plate 7 falls into the middle through groove 16 and flows out from the middle outlets 15 on both sides, and the material slag falls to the upper side of the third magnetic separation roller 13 and the fourth magnetic separation roller 14 respectively under the action of gravity. As the third magnetic separation roller 13 and the fourth magnetic separation roller 14 rotate, the iron ore is adsorbed onto the rollers, and the adsorbed iron ore continues to rotate to the back side with the third magnetic separation roller 13 and the fourth magnetic separation roller 14, and the iron ore scraped off by the two scrapers 17 falls into the lower outlet 9 of the iron ore and flows out, and the material slag flows out through the material slag outlets 6 respectively under the action of gravity.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An ore magnetic separation device, characterized in that: include: A box body (1) is configured as a box body structure with an upper end opening, a main feed opening (21) is installed above the box body (1), sliding grooves (24) are provided on both the front and rear sides of the main feed opening (21), a material distribution triangular prism (22) is slidably installed in the main feed opening (21) through two sliding grooves (24), and sliding blocks (25) slidably installed in the sliding grooves (24) are provided on both side surfaces of the material distribution triangular prism (22), and one side of the main feed opening (21) is provided with a sliding block (25) slidably installed in the sliding grooves (24). A driving screw (26) is rotatably installed, and the driving screw (26) is driven to rotate by a screw motor (27) installed on the main feed port (21). The slider (25) on one side passes through the sliding groove (24) and is threadedly connected to the driving screw (26). The material dividing triangular prism (22) divides the upper end opening of the box body (1) into a first feed port (2) and a second feed port (3). The two inner sides of the main feed port (21) are both provided with a baffle plate (23). The inside of the box body (1) A first magnetic roller (4) located below the first feed port (2) and a second magnetic roller (5) located below the second feed port (3) are rotatably mounted, a force measuring ring (28) is rotatably mounted on the box body (1) at the connection with the first magnetic roller (4) and the second magnetic roller (5), both ends of the first magnetic roller (4) and the second magnetic roller (5) are rotatably mounted in the force measuring ring (28), and a lower end surface of the box body (1) is provided with a force measuring ring (28) located between the first magnetic roller (4) and the second magnetic roller (5), a material slag outlet (6) is provided below the two material slag outlets (6), an iron ore lower outlet (9) is provided between the two material slag outlets (6), a first scraper plate (7) is installed above the interior of the box body (1) and is located between the first magnetic suction roller (4) and the second magnetic suction roller (5), two drive motors (8) are installed outside the box body (1), and the output shafts of the two drive motors (8) pass through the wall of the box body (1) and are respectively connected to one end of the first magnetic suction roller (4) and the second magnetic suction roller (5).

2. The ore magnetic separation device according to claim 1, characterized in that: The first scraper plate (7) is configured as an inverted "Y"-shaped structure, the upper end of the first scraper plate (7) is mounted on the upper end surface of the box body (1), and the front ends of the supporting legs on both sides of the lower end of the first scraper plate (7) respectively maintain a predetermined distance from the outer surfaces of the first magnetic attraction roller (4) and the second magnetic attraction roller (5).

3. The ore magnetic separation device according to claim 1, characterized in that: The first magnetic roller (4) and the second magnetic roller (5) both comprise an intermediate shaft (10), a support roller (11) and a magnetic layer (12); the support roller (11) is mounted on the intermediate shaft (10); the circumferential surface of the support roller (11) is coated with a magnetic layer (12); the two ends of the intermediate shaft (10) are respectively mounted on the side edges of the corresponding sides of the box body (1); the left and right front ends of the first scraper plate (7) respectively maintain a predetermined distance from the magnetic layers of the first magnetic roller (4) and the second magnetic roller (5).

4. The ore magnetic separation device according to claim 1, characterized in that: A third magnetic roller (13) located directly below the first magnetic roller (4) and a fourth magnetic roller (14) located directly below the second magnetic roller (5) are rotatably mounted inside the box (1); an iron ore intermediate outlet (15) is provided on both the left and right side walls of the box (1); a middle through slot (16) located in the middle of the four magnetic rollers is connected between the two iron ore intermediate outlets (15); a material slag outlet (6) located below the third magnetic roller (13) and the fourth magnetic roller (14) is provided on the lower end surface of the box (1); an iron ore lower outlet (9) is provided between the two material slag outlets (6); and the lower end surface of the middle through slot (16) is provided with a material slag outlet (6) located below the third magnetic roller (13) and the fourth magnetic roller (14). A second scraper plate (17) is installed between the third magnetic roller (13) and the fourth magnetic roller (14), and the front ends of the left and right sides of the second scraper plate (17) respectively maintain a predetermined distance from the outer circumferential surface of the third magnetic roller (13) and the fourth magnetic roller (14). Two drive motors (8) are installed outside the box (1), and the output shafts of the two drive motors (8) pass through the wall of the box (1) and are respectively connected to one end of the third magnetic roller (13) and the fourth magnetic roller (14). The third magnetic roller (13) drives the first magnetic roller (4) through a belt, and the fourth magnetic roller (14) drives the second magnetic roller (5) through a belt.

5. The ore magnetic separation device according to claim 4, characterized in that: The middle through slot (16) comprises a bottom plate (161) and two side plates (162), wherein the two side plates (162) are arranged on both sides of the bottom plate (161), and the bottom plate (161) is arranged in an inverted "V" shape. The openings at both ends of the middle through slot (16) are respectively installed at the iron ore middle outlet (15) on the corresponding side.

6. The ore magnetic separation device according to claim 4, characterized in that: The second scraper plates (17) are each configured as an inverted "Y"-shaped structure, the upper end of the second scraper plates (17) being mounted on the lower end surface of the middle through groove (16), and the front ends of the supporting legs on both sides of the lower end of the second scraper plates (17) respectively maintaining a predetermined distance from the outer surfaces of the third magnetic roller (13) and the fourth magnetic roller (14).

7. The ore magnetic separation device according to claim 4, characterized in that: The third magnetic roller (13) and the fourth magnetic roller (14) both comprise an intermediate shaft (10), a support roller (11) and a magnetic layer (12); the support roller (11) is mounted on the intermediate shaft (10); the circumferential surface of the support roller (11) is coated with a magnetic layer (12); the two ends of the intermediate shaft (10) are respectively mounted on the side edges of the corresponding sides of the box body (1); the front ends of the left and right sides of the second scraper plate (17) respectively maintain a predetermined distance from the magnetic layers (12) of the third magnetic roller (13) and the fourth magnetic roller (14).

8. An ore magnetic separation device according to claim 1 or 4, characterized in that: Two partitions (18) are arranged on the bottom surface of the box body (1), and the two partitions (18) are respectively arranged between the lower iron ore outlet (9) and the two material slag outlets (6).

9. An ore magnetic separation device according to claim 1 or 4, characterized in that: A seat plate (19) is installed on the outer side surface of the lower end of the box body (1), and four supporting legs (20) are installed on the bottom of the seat plate (19).

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