A magnetic separator feeding buffer cloth separation device and method

Abstract

The application discloses a magnetic separator ore feeding buffer and impurity separating and distributing device, which comprises a magnetic separator and symmetrically arranged linear vibrating screen, and a buffer assembly is arranged between the linear vibrating screen and the magnetic separator, wherein the buffer assembly comprises a buffer box, a first cast stone groove and a second cast stone groove are arranged on the inner side of the buffer box, and an isolation grid plate is arranged on the inner side of the buffer box; after the magnetic slurry enters the first cast stone groove, the magnetic slurry is isolated by the isolation grid plate and then enters the second cast stone groove; and a distributor is arranged on the side of the buffer box close to the magnetic separator, and the distributor is used for distributing the isolated magnetic slurry into the magnetic separator. The volume space of the buffer box can effectively attenuate the kinetic energy of the ore slurry and stabilize the flow state, so that the ore distribution is prevented from being disordered; the first cast stone groove and the second cast stone groove arranged on the inner side of the buffer box are made of cast stone material, so that the wear resistance is greatly improved, and the service life of the buffer box is prolonged; and the isolation grid plate with a 45-degree inclination is used for efficiently intercepting coarse ore, steel balls and non-magnetic impurities, so that the coarse ore, the steel balls and the non-magnetic impurities are prevented from entering the subsequent magnetic separation link.

Description

Technical Field

[0001] This invention relates to the field of mining and metallurgical technology, and in particular to a magnetic separator feeding buffer and impurity-separating material distribution device and method. Background Technology

[0002] Semi-autogenous mills are gradually replacing traditional fine crushing processes. Large mines often use them as the core equipment for wet grinding and coarse grinding operations. Their supporting classification equipment usually consists of two linear vibrating screens (one in operation and one on standby). The ore discharge product from the (semi)autogenous mill directly enters the linear vibrating screen for screening. The product on the screen is returned for re-grinding, and the product under the screen enters the next process.

[0003] However, there are two key problems in production: First, when qualified material under screening enters the first-stage magnetic separation feed pipe through the pipeline, the material distribution in the feed pipe is not uniform and the impact points at the connection between the pipeline and the feed pipe are prone to wear through; Second, the wear through the linear screen mesh is concealed, and coarse ore, broken steel balls and debris can easily enter the first-stage magnetic separator through the under-screen pipeline, causing the magnetic separator drum to jam, which in turn leads to equipment overload shutdown, reduced separation efficiency, and even aggravated drum wear and deformation, increasing the probability of failure.

[0004] Therefore, in order to solve the above problems, a magnetic separator feeding buffer and impurity isolation material distribution device is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a magnetic separator feeding buffer and impurity isolation material distribution device and method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A magnetic separator feeding buffer and impurity isolation material distribution device includes a magnetic separator and a symmetrically arranged linear vibrating screen. A buffer assembly is provided between the linear vibrating screen and the magnetic separator. The buffer assembly includes a buffer box. A first cast stone trough and a second cast stone trough are laid and installed on the inner side of the buffer box. An isolation grid plate is installed on the inner side of the buffer box. After the magnetic slurry enters the first cast stone trough, it is isolated by the isolation grid plate and then enters the second cast stone trough. A feeder is installed on the side of the buffer box near the magnetic separator. The feeder is used to evenly distribute the isolated magnetic slurry into the magnetic separator.

[0007] A method for feeding a magnetic separator with a buffer and impurity-isolating material includes the following steps: Step 1: Screening and feeding. The magnetic slurry is initially screened by a linear vibrating screen. The screened slurry enters the collection trough and flows by gravity into the buffer tank through the discharge pipe. Step 2: Buffering and energy dissipation. After the slurry enters the buffer tank, it flows through the first and second cast stone troughs in sequence, changing the slurry flow direction and expanding the flow area. Step 3: Isolation and impurity removal. The slurry passes through an isolation grid plate installed at a 45° angle between the second nut and the first nut to intercept and remove large particles of impurities remaining in the slurry. Step 4: Pre-distribution of the slurry. After being isolated, the slurry flows out of the outlet and into the feed end of the distributor. It flows through several equally spaced diversion holes on the diversion plate, which pre-disperse the slurry flow into multiple streams. Step 5: Gradual and uniform material distribution. After initial diversion by the diverter plate, the slurry enters the main body of the distributor and flows sequentially through several sets of equilateral angle steels installed at equal intervals. After multiple equalization and guidance by the multiple sets of equilateral angle steels, the slurry is evenly distributed along the axial direction of the magnetic separator and evenly fed into the feed trough of the magnetic separator.

[0008] The above technical solution further includes: The discharge end of the linear vibrating screen is equipped with a material collection trough, and the discharge end of the material collection trough is fixedly equipped with a discharge pipe.

[0009] The buffer box has an open top design, and a feed inlet is provided on one side of the buffer box. The feed inlet is fixedly connected to the discharge pipe.

[0010] The buffer assembly also includes a vertical plate fixedly connected to the inside of the buffer box. The vertical plate is located between the first and second cast stone troughs and is used to isolate the two. Several second nuts are installed on the side of the vertical plate. Several first nuts are installed on the side of the buffer box near the material distributor. The isolation grid is installed between the several second nuts and the first nuts, and the isolation grid is set at an inclination angle of 45°.

[0011] A support frame is fixedly installed at the bottom of the buffer box, and an intermediate bracket is fixedly installed at the bottom of the fabric feeder.

[0012] The buffer box has an outlet on the side away from the feed inlet. The feed end of the material distributor is connected to the outlet. A diverter plate is fixedly installed on the feed end of the material distributor near the outlet. Several diverter holes are equidistantly opened on the diverter plate.

[0013] The material distributor has several sets of equilateral angle steels installed at equal intervals from the diverter plate toward the magnetic separator. Each set of equilateral angle steels is set in three columns at equal intervals. Each column contains several equilateral angle steels at equal intervals. The distance between two adjacent equilateral angle steels in each column is twice the column spacing.

[0014] The number of equilateral angle steels in each column satisfies Amn=a+(M-1)+(N-1), where a is the number of steels in the first column of the first group, M is the number of groups, and N is the number of columns in each group.

[0015] The first and second cast stone troughs are both made of cast stone slabs with a Mohs hardness between 7.0 and 8.0. The material of the feeder, buffer box and isolation grid plate is ordinary Q235B steel.

[0016] The present invention has the following beneficial effects: In this invention, the volume of the buffer tank can effectively attenuate the kinetic energy of the slurry and stabilize the flow state, avoiding material turbulence. The first and second cast stone troughs made of cast stone material laid on its inner side greatly improve wear resistance and extend the service life of the buffer tank. Combined with the 45° inclined isolation grid plate, it can efficiently intercept coarse ore, broken steel balls and non-magnetic debris, preventing them from entering the subsequent magnetic separation stage.

[0017] In this invention, by adding a magnetic separation component, the drive plate is driven by rotating the adjustment handle, which in turn drives the installation slider to slide in the drive groove and the limiting groove, thereby adjusting the distance between the two permanent magnet plates to change the magnetic field strength. This causes the magnetic minerals to gather on the side of the distribution pipe away from the distribution pipe under the action of the magnetic field and the flow, and enter the buffer box. Meanwhile, the slurry containing fewer minerals is discharged from the distribution pipe and replenished to the ball mill, effectively reducing the magnetic separation load of the subsequent magnetic separator. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front view of a magnetic separator feeding buffer and impurity-isolating cloth device proposed in this invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 This is a front view structural diagram of the buffer component in this invention; Figure 4 This is a side view of the buffer component in the present invention. Figure 5 This is a schematic diagram of the structure of the first nut (A) and the second nut (B) in this invention; Figure 6 This is a top view of the buffer component in this invention. Figure 7 This is a schematic diagram of the first side view of the buffer component in this invention; Figure 8 This is a schematic diagram of the second side view of the buffer component in this invention; Figure 9 This is a schematic diagram of the flow divider structure in this invention; Figure 10 These are schematic diagrams of the front view (A) and side view (B) of the intermediate support structure in this invention; Figure 11 The diagram shows the front view (A), side view (B), and top view (C) of the support frame in this invention. Figure 12This is a front view schematic diagram of the fabric feeder structure in this invention; Figure 13 This is a top view of the fabric feeder structure in this invention; Figure 14 This is a schematic diagram of the equilateral angle steel structure in this invention; Figure 15 This is a schematic diagram of the magnetic separation component and buffer box structure in this invention; Figure 16 This is a schematic diagram of the internal structure of the buffer box in this invention; Figure 17 This is a schematic diagram of the magnetic separation component structure in this invention; Figure 18 This is a schematic diagram of the internal structure of the material distribution pipe in this invention; Figure 19 This is a schematic diagram of the limiting bolt and adjusting handle structure in this invention.

[0019] In the diagram: 1. Linear vibrating screen; 2. Buffer box; 3. Diverter plate; 4. Support frame; 5. Distributor; 6. Intermediate support; 7. Fixed cylinder; 8. Magnetic separator; 10. Collection trough; 11. Discharge pipe; 20. First cast stone trough; 21. Feed inlet; 22. Second cast stone trough; 23. Isolation grid plate; 24. Discharge outlet; 25. Maintenance sealing door; 230. First nut; 220. Vertical plate; 221. Two nuts; 30, diversion hole; 50, equilateral angle steel; 70, material distribution pipe; 71, diversion pipe; 72, adjusting handle; 73, drive plate; 730, drive groove; 74, fixed plate; 740, limit groove; 75, permanent magnet plate; 76, fixed seat; 77, limit bolt; 78, sliding column; 79, limit cylinder; 710, rotating seat; 711, mounting slider; 712, hinge seat; 713, material distribution plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 like Figures 1-19As shown, the present invention proposes a magnetic separator feeding buffer and impurity isolation material distribution device, which includes a magnetic separator 8 and a symmetrically arranged linear vibrating screen 1. A buffer assembly is provided between the linear vibrating screen 1 and the magnetic separator 8. The buffer assembly includes a buffer box 2. A first cast stone trough 20 and a second cast stone trough 22 are laid and installed on the inner side of the buffer box 2. An isolation grid plate 23 is installed on the inner side of the buffer box 2. The material of the material distributor 5, the buffer box 2 and the isolation grid plate 23 are all ordinary Q235B steel. After the magnetic slurry enters the first cast stone trough 20, it is isolated by the isolation grid plate 23 and enters the second cast stone trough 22. A feeder 5 is provided on the side of the buffer tank 2 near the magnetic separator 8. The feeder 5 is used to evenly distribute the isolated magnetic slurry into the magnetic separator 8.

[0022] This design uses a buffer component to achieve kinetic energy attenuation and flow stability through the volume space of the buffer tank 2, avoiding the material distribution disorder caused by direct impact of slurry in traditional direct connection structures. The buffer box 2 integrates an inclined plate isolation grid 23. The isolation grid 23 is used to efficiently separate coarse ore, broken steel balls and non-magnetic impurities mixed in by the broken screen, and prevent them from entering the subsequent magnetic separation stage. The outlet of the buffer box 2 is equipped with an inclined feeder 5. The feeder 5 is fan-shaped. The slurry is evenly distributed through the fan-shaped diffusion structure of the flow channel and then enters the feed trough of the magnetic separator 8. This eliminates the blind zone caused by local slurry that is too thick or too thin, and improves the magnetic field utilization rate of the magnetic separator 8. The first cast stone tank 20 and the second cast stone tank 22 are made of cast stone plates to enhance wear resistance. The material is cast stone plates with a Mohs hardness of 7.0-8.0, which directly bear the scouring and wear of high-speed magnetic slurry. This setting replaces the ordinary steel plate lining and can significantly extend the service life of the buffer tank 2 under strong abrasive conditions and prevent the tank body from being worn through and leaking slurry.

[0023] Example 2 like Figures 1-14 As shown, based on Embodiment 1, in this embodiment, a material collection trough 10 is installed at the discharge end of the linear vibrating screen 1, and a discharge pipe 11 is fixedly installed at the discharge end of the material collection trough 10. Furthermore, at the beginning of the operation, the magnetic slurry first enters the linear vibrating screen 1 for preliminary screening to remove large particles of impurities, providing uniformly sized raw materials for subsequent processes. After screening, the magnetic slurry enters the collection trough 10 installed below the linear vibrating screen 1 for centralized collection. Subsequently, the slurry flows by gravity into the buffer tank 2 through the discharge pipe 11 fixedly installed at the discharge end of the collection trough 10. The bottom of the buffer box 2 is fixedly installed with a support frame 4. The top of the buffer box 2 is open. A feed inlet 21 is opened on one side of the buffer box 2. The feed inlet 21 is fixedly connected to the discharge pipe 11.

[0024] The buffer assembly also includes a vertical plate 220 fixedly connected to the inner side of the buffer box 2. The vertical plate 220 is located between the first cast stone trough 20 and the second cast stone trough 22 and is used to isolate the two. The first cast stone trough 20 and the second cast stone trough 22 are both made of cast stone plate. Several second nuts 221 are installed on the side of the vertical plate 220. Several first nuts 230 are installed on the side of the buffer box 2 near the feeder 5. The isolation grid plate 23 is installed between several second nuts 221 and first nuts 230, and the isolation grid plate 23 is set at an inclination angle of 45°. Furthermore, after flowing through the first casting trough 20, the magnetic slurry crosses the vertical plate 220 and enters the area of ​​the second casting trough 22. During this process, the slurry flows through an isolation grid plate 23 installed at a 45° angle. The isolation grid plate 23 is fixed by several second nuts 221 installed on the side of the vertical plate 220 and several first nuts 230 on the side of the buffer box 2 near the distributor 5. The core function of the isolation grid plate 23 is to isolate the flowing magnetic slurry, intercept coarse ore particles, broken steel balls and non-magnetic impurities, and ensure the purity of the slurry entering the subsequent process.

[0025] The buffer box 2 has an outlet 24 on the side away from the feed inlet 21. The feed end of the feeder 5 is connected to the outlet 24. A diverter plate 3 is fixedly installed on the feed end of the feeder 5 near the outlet 24. Several diverter holes 30 are equidistantly opened on the diverter plate 3.

[0026] Furthermore, in order to reduce the deposition of particulate matter in the magnetic slurry in the second casting tank 22, stirring blades can be symmetrically arranged in the second casting tank 22. The stirring blades are driven by a three-phase AC motor, and the two stirring blades are linked by a sprocket and chain. The AC motor is installed in the buffer box 2 at the bottom of the second casting tank 22, thereby reducing the deposition of particulate matter.

[0027] Furthermore, the magnetic slurry, after being isolated and purified, flows out from the outlet 24 and enters the feed end of the distributor 5. The bottom of the distributor 5 is fixedly supported by the intermediate bracket 6. At the inlet of the slurry entering the distributor 5, a diversion plate 3 is fixedly installed. Several diversion holes 30 are equally spaced through the diversion plate 3. Its function is to pre-disperse the slurry flow entering the distributor 5 into multiple streams, laying the foundation for subsequent uniform distribution.

[0028] A middle support 6 is fixedly installed at the bottom of the material feeder 5. Several sets of equilateral angle steels 50 are installed on the material feeder 5 at equal intervals. The number of equilateral angle steels 50 in each column satisfies Amn=a+(M-1)+(N-1), where a is the number of the first column of the first group, M is the number of groups, and N is the number of columns in each group.

[0029] Furthermore, after initial diversion by the diverter plate 3, the magnetic slurry enters the main body of the distributor 5. Several sets of equilateral angle steels 50 are sequentially and equidistantly installed on the distributor 5. Each set of equilateral angle steels 50 is arranged in three equidistant columns, and each column consists of several equidistant equilateral angle steels 50. The distance between two adjacent equilateral angle steels 50 in each column is twice the column spacing. The number of equilateral angle steels 50 in each column satisfies the following formula: Amn=a+(M-1)+(N-1), where a is the number of the first column in the first set, M is the number of sets, and N is the number of columns in each set, as shown in the table below. The equilateral angle steel 50 closest to the diverter plate 3 is designated as the first column of the first set. Through this specific arrangement, the 50 sets of equilateral angle steels can perform secondary, tertiary, or even multiple equalization and guidance of the slurry flowing through the diversion plate 3, ensuring that the magnetic slurry can be evenly distributed along the axial direction of the magnetic separator 8.

[0030]

[0031] Furthermore, maintenance sealing doors 25 are provided on the buffer tank 2 at the first cast stone tank 20 and the second cast stone tank 22 corresponding to the buffer tank 2, for subsequent maintenance and cleaning of the sediment in the first cast stone tank 20 and the second cast stone tank 22.

[0032] Example 3 like Figures 15-19 As shown, based on the above embodiments, in this embodiment, in order to further increase the content of magnetic minerals in the magnetic separator diversion plate 3, a magnetic separation component is installed in the middle section before the feed pipe 11 enters the buffer box 2. The magnetic separation component includes a feed pipe 70, the two ends of which are connected by flanges and fixed to the feed pipe 11. Fixing plates 74 are symmetrically fixed to the side of the feed pipe 70. A drive plate 73 is rotatably installed on the side of the two fixing plates 74 that are far apart. A drive groove 730 is symmetrically opened through the center of the drive plate 73. A limiting groove 740 is symmetrically opened through the center of the fixing plate 74. The limiting groove 740 is a straight groove with round openings at both ends, and the drive groove 730 is an arc groove with round openings at both ends. The arc groove and the straight groove satisfy a certain geometric relationship, that is, when the drive groove 730 rotates 180°, the mounting slider 711, which is slidably limited and slidably set in the drive groove 730 and the limiting groove 740, just moves from one end of the limiting groove 740 to the other end. Furthermore, a material distribution plate 713 is fixedly connected to the inner side of the fixed cylinder 7, and a diversion pipe 71 is connected to the side of the material distribution pipe 70 near the material distribution plate 713. The material distribution plate 713 divides the material distribution pipe 70 into two flow channels. A permanent magnet plate 75 is installed between the upper and lower mounting sliders 711 on the same side, and an adjustment handle 72 is welded to the side of the upper and lower drive plates 73. By rotating the adjustment handle 72, the distance between the two permanent magnet plates 75 can be adjusted, thereby adjusting the magnetic field strength between the two permanent magnet plates 75. Furthermore, when the magnetic separator is working, it is necessary to ensure that the magnetic slurry in the feed tube 70 flows fully and that there is no gap between the magnetic slurry and the inner wall of the feed tube 70. The distance between the two permanent magnet plates 75 is adjusted according to the magnetic strength of the ore being processed and the flow rate of the slurry. Under the action of the magnetic field and the flow, the magnetic minerals undergo parabolic motion and accumulate on the side of the feed tube 70 away from the diversion tube 71. This ensures that less magnetic minerals flow into the inner side of the diversion tube 71, while more magnetic minerals enter the buffer box 2 from the other side of the feed plate 713. The slurry flowing out of the diversion tube 71 can be replenished into the wet ball mill, which can reduce the magnetic separation load of the subsequent magnetic separator 8. Furthermore, in the limiting position after the two permanent magnet plates 75 are adjusted, several material distribution pipes 70 are opened on the upper half of the outer wall of the fixed cylinder 7. The inner wall of the material distribution pipes 70 is provided with threads. A fixed seat 76 is fixedly connected to the middle of the material distribution pipes 70 corresponding to the adjusting handle 72. A hinge seat 712 is fixedly connected to the side of the fixed seat 76 near the fixed cylinder 7. A rotating seat 710 is fixedly connected to the hinge seat 712. A limiting cylinder 79 is rotatably connected to one side of the rotating seat 710. A sliding column 78 is provided on the inner side of the limiting cylinder 79 for limiting sliding. A limiting bolt 77 is fixedly connected to the end of the sliding column 78. The limiting bolt 77 can be screwed into the inner side of the material distribution pipe 70 by using a tool pliers to realize the limiting of the two permanent magnet plates 75.

[0033] Example 4 Based on the above embodiments, a method for feeding buffer and impurity isolation material into a magnetic separator includes the following steps: Step 1: Screening and feeding. The magnetic slurry is initially screened by the linear vibrating screen 1. The screened slurry enters the collection trough 10 and flows into the buffer tank 2 by gravity through the discharge pipe 11. Step 2: Buffering and energy dissipation. After the slurry enters the buffer tank 2, it flows through the first cast stone trough 20 and the second cast stone trough 22 in sequence, changing the slurry flow direction and expanding the flow area. Step 3: Isolation and impurity removal. The slurry passes through the isolation grid plate 23 installed at a 45° angle between the second nut 221 and the first nut 230 to intercept and remove large particles of impurities remaining in the slurry. Step 4: Pre-distribution of the slurry. After being isolated, the slurry flows out of the outlet 24 and enters the feed end of the distributor 5. It flows through several equally spaced diversion holes 30 on the diversion plate 3, which pre-disperse the slurry flow into multiple streams. Step 5: Gradually distribute the material evenly. After the slurry is initially divided by the diverter plate 3, it enters the main body of the distributor 5 and flows through several sets of equilateral angle steels 50 installed at equal intervals. After being evenly distributed and guided by multiple sets of equilateral angle steels 50, the slurry is evenly distributed along the axial direction of the magnetic separator 8 and evenly fed into the feed trough of the magnetic separator 8.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic separator feeding buffer and impurity-isolating material distribution device, comprising a magnetic separator (8) and symmetrically arranged linear vibrating screens (1), characterized in that, A buffer assembly is provided between the linear vibrating screen (1) and the magnetic separator (8). The buffer assembly includes a buffer box (2). A first stone trough (20) and a second stone trough (22) are laid and installed on the inner side of the buffer box (2). An isolation grid plate (23) is installed on the inner side of the buffer box (2). After the magnetic slurry enters the first stone trough (20), it is isolated by the isolation grid plate (23) and then enters the second stone trough (22). The buffer tank (2) is provided with a feeder (5) on the side near the magnetic separator (8). The feeder (5) is used to evenly distribute the isolated magnetic slurry into the magnetic separator (8).

2. The magnetic separator feeding buffer and impurity-isolating cloth device according to claim 1, characterized in that, The discharge end of the linear vibrating screen (1) is equipped with a material collection trough (10), and the discharge end of the material collection trough (10) is fixedly equipped with a discharge pipe (11).

3. The magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 1, characterized in that, The buffer box (2) has an open top design, and a feed inlet (21) is provided on one side of the buffer box (2). The feed inlet (21) is fixedly connected to the discharge pipe (11).

4. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 3, characterized in that, The buffer assembly also includes a vertical plate (220) fixedly connected to the inner side of the buffer box (2). The vertical plate (220) is located between the first cast stone trough (20) and the second cast stone trough (22) and is used to isolate the two. Several second nuts (221) are installed on the side of the vertical plate (220). Several first nuts (230) are installed on the side of the buffer box (2) near the feeder (5). The isolation grid plate (23) is installed between several second nuts (221) and first nuts (230), and the isolation grid plate (23) is set at an inclination angle of 45°.

5. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 4, characterized in that, The bottom of the buffer box (2) is fixedly installed with a support frame (4), and the bottom of the fabric feeder (5) is fixedly installed with an intermediate bracket (6).

6. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 1, characterized in that, The buffer box (2) has an outlet (24) on the side away from the feed inlet (21). The feed end of the feeder (5) is connected to the outlet (24). A diversion plate (3) is fixedly installed on the feed end of the feeder (5) near the outlet (24). Several diversion holes (30) are equidistantly opened on the diversion plate (3).

7. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 1, characterized in that, The material distributor (5) has several sets of equilateral angle steels (50) installed at equal intervals from the diverter plate (3) toward the magnetic separator (8). Each set of equilateral angle steels (50) is set in three columns at equal intervals. Each column of equilateral angle steels (50) consists of several equilateral angle steels. The distance between two adjacent equilateral angle steels (50) in each column is twice the column spacing.

8. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 7, characterized in that, The quantity of equilateral angle steel (50) in each column satisfies Amn=a+(M-1)+(N-1), where a is the quantity in the first column of the first group, M is the group number, and N is the column number in each group.

9. A magnetic separator feeding buffer and impurity-isolating cloth distribution device according to claim 1, characterized in that, The first cast stone trough (20) and the second cast stone trough (22) are both made of cast stone plates with a Mohs hardness between 7.0 and 8.

0. The material of the feeder (5), the buffer box (2) and the isolation grid plate (23) are all ordinary Q235B steel.

10. A method for providing buffer and impurity-isolating material for feeding a magnetic separator, based on the magnetic separator feeding buffer and impurity-isolating material device according to any one of claims 1 to 9, characterized in that, Including the following methods: Step 1: Screening and feeding. The magnetic slurry is initially screened by a linear vibrating screen (1). The screened slurry enters the collection trough (10) and flows by gravity into the buffer tank (2) through the discharge pipe (11). Step 2: Buffering and energy dissipation. After the slurry enters the buffer tank (2), it flows through the first cast stone trough (20) and the second cast stone trough (22) in sequence, changing the slurry flow direction and expanding the flow area. Step 3: Isolation and impurity removal. The slurry passes through the isolation grid plate (23) installed at a 45° angle between the second nut (221) and the first nut (230) to intercept and remove large particles of impurities remaining in the slurry. Step 4: Pre-distribution of the slurry. After being isolated, the slurry flows out of the outlet (24) and enters the feed end of the distributor (5). It flows through several equally spaced diversion holes (30) on the diversion plate (3) to pre-disperse the slurry flow into multiple streams. Step 5: Gradually distribute the material evenly. After the slurry is initially divided by the diverter plate (3), it enters the main body of the distributor (5) and flows through several sets of equilateral angle steels (50) installed at equal intervals. After being evenly distributed and guided by multiple sets of equilateral angle steels (50), the slurry is evenly distributed along the axial direction of the magnetic separator (8) and evenly fed into the feed trough of the magnetic separator (8).

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