A powder dry magnetic separator

Abstract

The present invention discloses a powder dry magnetic separator, including a main magnetic separation working part, an auxiliary magnetic separation working part and a mechanical moving part. The main magnetic separation working part includes a magnetic inner tube, which is fixedly installed horizontally inside the magnetic separator cavity. The auxiliary magnetic separation working part includes a magnetic separator cavity, which is a hollow square structure placed horizontally on the ground. A pneumatic feed port is fixedly arranged on the upper surface of the magnetic separator cavity. The powder dry magnetic separator adopts an innovative sleeve and magnetic inner tube design, and fixes the magnetic inner tube to a fixed position of the magnetic separation device. All magnetic inner tubes form a complete magnetic separation working area, and the magnetic powder particles are captured during the magnetic separation work. The captured magnetic powder is not directly adsorbed on the magnetic inner tube, but attached to the outer wall of the magnetic separation sleeve. In this way, the traditional scraper is replaced, and the problem that the magnetic material will stick to the magnetic inner tube to a certain extent is solved, which facilitates the separation and collection of magnetic powder.

Description

Technical Field

[0001] The invention relates to the technical field of dry magnetic separation equipment, in particular to a powder dry magnetic separator. Background Art

[0002] Magnetic separation or magnetic separation technology is a separation method that uses the magnetic difference of the separated materials to separate the material particles in the separation magnetic field. It is widely used in the field of mineral processing or other magnetic separation technology fields. Magnetic separation can be divided into dry magnetic separation and wet magnetic separation. Dry magnetic separators include dry high gradient magnetic separator, dry strong magnetic field, medium magnetic field magnetic separator, and dry round magnetic separator.

[0003] In the prior art, a Chinese patent with the authorization announcement number CN202121460158.9U discloses a fine powder dry magnetic separator, which includes fine powder falling onto the surface of two sets of magnetic rollers through the guide of the guide plate, and the magnetic material is adsorbed on the surface of the two sets of magnetic rollers through the magnetic force of the two sets of magnetic rollers. The two sets of magnetic rollers rotate outward in opposite directions respectively, so that the magnetic material adsorbed on the surface of the magnetic rollers is scraped by two sets of scrapers respectively, thereby collecting the material...

[0004] The above-mentioned device has the following problems in actual use: ① When sorting dry fine powder, the magnetic field gradient of the magnetic system is not large enough to separate the magnetic material from the non-magnetic material, resulting in a large number of non-magnetic inclusions in the product; ② The equipment cannot operate continuously, the space is relatively limited, and it needs to be fed in stages, resulting in low sorting output per unit time;

[0005] In summary, the dry magnetic separation equipment in the prior art uses a magnetic system with a weak magnetic field strength or a weak magnetic field strength gradient, and is unable to separate the magnetic material adsorbed on the magnet from the non-magnetic material. Some dry magnetic separators add vibration or jet blowing devices to improve the dispersibility of fine powders during magnetic separation, but fine powders have a strong agglomeration force under the attraction of the magnetic field and are difficult to disperse. These magnetic separation equipment cannot fundamentally avoid the problems of poor sorting efficiency and low output per unit in dry magnetic separation of fine powders, and need to greatly increase the content of magnetic materials in the product. It is necessary to achieve high-efficiency dry magnetic separation of strong magnetic fine powders through a completely new technical approach. Moreover, it is difficult for most magnetic separation equipment to sort magnetic materials online, and it becomes a major difficulty to accurately process and separate large quantities of powders with magnetic materials. Summary of the invention

[0006] The object of the present invention is to provide a powder dry magnetic separator to solve the problem in the above background technology that the magnetic field gradient of the magnetic system is not large enough and the separation output per unit time is low.

[0007] To achieve the above object, the present invention provides the following technical solution: a powder dry magnetic separator, comprising a main magnetic separation working part, an auxiliary magnetic separation working part and a mechanical motion part, characterized in that:

[0008] The main working parts of the magnetic separation include:

[0009] The magnetic inner tube is fixedly installed in the cavity of the magnetic separator in a transverse direction, two permanent magnets and a magnetic conductor are arranged inside the magnetic inner tube, and a magnetic separation sleeve is provided outside the magnetic inner tube, and the outer surface of the magnetic separation sleeve is arranged as a uniformly arranged circular convex structure;

[0010] The magnetic separation auxiliary work part includes:

[0011] The magnetic separator cavity is a hollow square structure placed horizontally on the ground. A pneumatic feed port is fixedly arranged on the upper surface of the magnetic separator cavity. The inner part of the magnetic separator cavity is composed of discharge bins on the left and right sides and a feed bin in the middle. The discharge bin is in a positive pressure state during magnetic separation.

[0012] A right baffle is fixedly mounted inside the magnetic separator cavity on the boundary line between the discharge bin and the feed bin on the right side;

[0013] A left baffle is fixedly mounted inside the magnetic separator cavity on the boundary line between the discharge bin and the feed bin on the left side;

[0014] An integrated baffle is fixedly mounted on the outside of the magnetic separation sleeve, and the integrated baffle is connected to the magnetic separation sleeve through a through hole;

[0015] The right magnetic material collection port, the left magnetic material collection port and the longitudinal residual material ash collection port are all fixedly installed on the lower surface of the magnetic separator cavity, and the right magnetic material collection port, the left magnetic material collection port and the longitudinal residual material ash collection port are all set to a funnel-shaped structure;

[0016] The mechanical motion part includes:

[0017] The mechanical motion device is fixedly mounted on the front and rear side walls of the magnetic separator cavity, and a sliding block is arranged inside the mechanical motion device.

[0018] Preferably, the length of the magnetic area of ​​the magnetic inner tube is equal to the width of the feed bin, and the positions of the two overlap with each other. The four groups of magnetic inner tubes from top to bottom are distributed in the manner of three, two, three, and two. By utilizing multiple groups of distributed magnetic separation sleeves, a multi-gradient magnetic space can be achieved, thereby improving the overall magnetic separation accuracy of the device.

[0019] Preferably, the initial position of the integrated baffle is located on the longitudinal center axis inside the magnetic separator cavity, and the outer surface of the integrated baffle is fitted with the inner wall of the magnetic separator cavity. The integrated baffle fitted with the magnetic separator cavity can fully drive the internal material to move when moving.

[0020] Preferably, the integrated baffle drives the magnetic separation sleeve to move left and right synchronously, and a sliding structure is formed between the magnetic separation sleeve and the magnetic inner tube, and the maximum stroke of the magnetic separation sleeve is to move to fit the inner wall of the side of the magnetic separator cavity.

[0021] Preferably, sliders are fixedly installed on the front and rear sides of the integrated baffle, and the sliders are located in the slide rails of a mechanical motion device fixedly installed on the front and rear side walls of the magnetic separator chamber, and the mechanical motion device is set to an electrically controlled slide rail mode. The slider drives the integrated baffle to move synchronously through the mechanical motion device, and the mechanical motion device is used to drive the integrated baffle to move inside the magnetic separator chamber, thereby driving the internal material to move.

[0022] Preferably, a relatively independent space is formed between the feed bin and the discharge bin by the right baffle and the left baffle, and the pneumatic feed port is located directly above the feed bin, the positions of the discharge bins on the left and right sides correspond to the positions of the left magnetic material collecting port and the right magnetic material collecting port respectively, and the position of the discharge bin corresponds to the position of the longitudinal residual material ash collection port, and electric-controlled valves are installed at the outlets of the left magnetic material collection port and the right magnetic material collection port.

[0023] Preferably, a discharge pipe for discharging powder is fixedly installed outside the residual ash collection port, and a feed pipe for feeding is fixedly installed outside the pneumatic feed port, and the left magnetic material collection port and the right magnetic material collection port are both connected to a constant pressure discharge pipe when working.

[0024] Preferably, the left and right ends of the magnetic separation sleeve respectively form a through-type sliding structure with the left baffle and the right baffle, and when the integrated baffle moves to the extreme positions at the left and right ends, the top of the magnetic separation sleeve is still located in the discharge bin, thereby preventing the selected magnetic materials from being discharged from the residual ash collection port.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) The powder dry magnetic separator adopts an innovative sleeve and magnetic inner tube design. The magnetic inner tube is fixed in a fixed position on the magnetic separation device. All the magnetic inner tubes form a complete magnetic separation working area. The magnetic powder particles are captured during the magnetic separation. The captured magnetic powder is not directly adsorbed on the magnetic inner tube, but attached to the outer wall of the magnetic separation sleeve. This method replaces the traditional scraper, solves the problem that magnetic materials will stick to the magnetic inner tube to a certain extent, and facilitates the separation and collection of magnetic powder.

[0027] (2) The discharge bins on both sides of the feed bin involved in the powder dry magnetic separator are sealed. When the magnetic separator is working, the discharge bins on both sides maintain positive pressure. Due to the effect of air pressure, the powder entering the feed bin will not enter the discharge bins on both sides, so that the original material in the feed bin and the magnetic powder in the discharge bin do not affect each other. Therefore, the problem that similar magnetic separators using magnetic bars cannot perform feeding and sorting at the same time is solved.

[0028] (3) The outer surface of the magnetic separation sleeve involved in the powder dry magnetic separator has a raised structure. This structure forms an obstacle. These regularly distributed obstacles hinder the horizontal movement of the material on the magnetic separation sleeve. These protrusions are distributed in the feed bin part of the magnetic separation sleeve. When the material moves to the raised part with the magnetic field of the magnetic inner tube, the material flips. Due to the attraction of the magnetic field to the magnetic powder, the relative position of the non-magnetic powder and the magnetic powder changes. The magnetic and non-magnetic powders can discharge non-magnetic particles during the tumbling process, so that the two materials can be enriched and purified respectively, and finally the entrainment of non-magnetic substances is reduced. Compared with similar magnetic separation devices without magnetic separation sleeves, the content and purity of magnetic substances in the product are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the front cross-sectional structure of the magnetic separator chamber of the present invention;

[0030] Figure 2 It is a schematic diagram of the side cross-sectional structure of the magnetic separator chamber of the present invention;

[0031] Figure 3 This is a schematic diagram of the three-dimensional main structure of the magnetic separator chamber of the present invention;

[0032] Figure 4 This is a schematic diagram of the three-dimensional main structure of the magnetic separation casing of the present invention;

[0033] Figure 5 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0034] In the figure: 1. Magnetic separator chamber; 101. Pneumatic feed port; 102. Feed bin; 103. Discharge bin; 2. Right baffle; 3. Left baffle; 4. Magnetic inner tube; 5. Magnetic separation sleeve; 6. Integrated baffle; 7. Right magnetic material collection port; 8. Left magnetic material collection port; 9. Longitudinal residual material ash collection port; 10. Mechanical motion device; 11. Slider. Implementation

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 5 The present invention provides a technical solution: a powder dry magnetic separator, comprising a magnetic separator cavity 1, a magnetic inner tube 4, a magnetic separation sleeve 5, a right magnetic material collecting port 7, a left magnetic material collecting port 8 and a longitudinal residual ash collecting port 9, and also comprising: a magnetic separator cavity 1, which is a hollow square structure as a whole and is placed horizontally on the ground, a pneumatic feed port 101 is fixedly arranged on the upper surface of the magnetic separator cavity 1, and the interior of the magnetic separator cavity 1 is divided into a discharge bin 103 on the left and right sides and a feed bin 102 in the middle, and the discharge bin 103 is in a positive pressure state during magnetic separation; a right baffle plate 2 is fixedly installed inside the magnetic separator cavity 1 on the dividing line between the right discharge bin 103 and the feed bin 102; a left baffle plate 3 is fixedly installed on the left discharge bin The inside of the magnetic separator cavity 1 on the dividing line between the bin 103 and the feed bin 102; the magnetic inner tube 4 is fixedly installed horizontally inside the magnetic separator cavity 1, and two permanent magnets and a magnetic conductor are arranged inside the magnetic inner tube 4, and a magnetic separation sleeve 5 is sleeved on the outside of the magnetic inner tube 4, and the outer surface of the magnetic separation sleeve 5 is set to a uniformly arranged circular convex structure; the integrated baffle 6 is fixedly installed on the outside of the magnetic separation sleeve 5, and the integrated baffle 6 and the magnetic separation sleeve 5 are connected through; the right magnetic material collection port 7, the left magnetic material collection port 8 and the longitudinal residual material ash collection port 9 are all fixedly installed on the lower surface of the magnetic separator cavity 1, and the right magnetic material collection port 7, the left magnetic material collection port 8 and the longitudinal residual material ash collection port 9 are all set to a funnel-shaped structure;

[0037] The length of the magnetic area of ​​the magnetic inner tube 4 is equal to the width of the feed bin 102, and the positions of the two overlap with each other, and the four groups of magnetic inner tubes 4 from top to bottom are distributed in the form of three, two, three, and two; the initial position of the integrated baffle 6 is located on the longitudinal central axis inside the magnetic separator chamber 1, and the outer surface of the integrated baffle 6 is fitted with the inner wall of the magnetic separator chamber 1, the integrated baffle 6 drives the magnetic separation sleeve 5 to move left and right synchronously, and a sliding structure is formed between the magnetic separation sleeve 5 and the magnetic inner tube 4, and the maximum stroke of the magnetic separation sleeve 5 is to move to fit the side inner wall of the magnetic separator chamber 1, and sliders 11 are fixedly installed on the front and rear sides of the integrated baffle 6, and the sliders 11 are located in the slide rails of the mechanical motion device 10 fixedly installed on the front and rear side walls of the magnetic separator chamber 1, and the mechanical motion device 10 is set to an electrically controlled slide rail mode, and the slider 11 drives the integrated baffle 6 to move synchronously through the mechanical motion device 10, and the feed bin 102 and the discharge bin 103 are connected by the right baffle The plate 2 and the left baffle plate 3 form a relatively independent space, and the pneumatic feed port 101 is located directly above the feed bin 102, the positions of the left and right discharge bins 103 correspond to the positions of the left magnetic material collecting port 8 and the right magnetic material collecting port 7 respectively, and the position of the discharge bin 103 corresponds to the position of the longitudinal residual material ash collecting port 9, and electric control valves are installed at the outlets of the left magnetic material collecting port 8 and the right magnetic material collecting port 7, and a discharge pipe for discharging powder is fixedly installed outside the longitudinal residual material ash collecting port 9, and a feed pipe for feeding is fixedly installed outside the pneumatic feed port 101, and the left magnetic material collecting port 8 and the right magnetic material collecting port 7 are connected to a constant pressure discharge pipe when working, and the left and right ends of the magnetic separation sleeve 5 respectively form a through sliding structure between the left baffle plate 3 and the right baffle plate 2, and when the integrated baffle plate 6 moves to the limit positions at the left and right ends, the top of the magnetic separation sleeve 5 is still located in the discharge bin 103;

[0038] In order to ensure the normal operation of the powder dry magnetic separator, it is also necessary to equip an air compressor to connect the exhaust pipe, the exhaust pipe is connected to the suction pipe, one end of the suction pipe is inserted into the powder material, and the other end is connected to the pneumatic feed port 101 of the feed bin 102; the longitudinal residual ash collection port 9 is connected to one end of the discharge pipe, and the other end of the discharge pipe is connected to the sealed storage barrel; a constant pressure discharge pipe is provided below the left magnetic material collection port 8 and the right magnetic material collection port 7, and the other end of the discharge pipe is connected to a sealed collection device to ensure that the inside of the discharge bin 103 maintains a positive pressure state during discharge to prevent the air pressure change from causing unscreened materials to enter the discharge bins 103 on both sides. Under normal power supply conditions of the powder dry magnetic separator, the magnetic separation process is divided into three parts: feeding, sorting, and discharging according to the different positions of the powder material in the powder dry magnetic separator;

[0039] Feeding: The powder raw materials flow to the pneumatic feeding port 101 through the airflow in the pneumatic feeding device placed above the feeding bin 102, and the powder raw materials enter the cavity of the feeding bin 102 through the pneumatic feeding port 101. The powder materials are brought in by the airflow of the pneumatic feeding device, and the original aggregated state of the materials is changed to a dispersed state. These powder raw materials enter the working area of ​​the cavity of the feeding bin 102;

[0040] Sorting: The magnetic substances in the powder raw materials are attracted and captured by the magnetic field generated by the magnetic inner tube 4. These magnetic substances gather and accumulate on the surface of the magnetic separation sleeve 5 of the feed bin 102. Since the diameter of the pneumatic feed port 101 is very small, most of the raw material powder brought in by the airflow gathers in the middle position of the surface of the magnetic separation sleeve 5 in the feed bin 102. After the magnetic substances are captured by the magnetic field, the non-magnetic substances will be deposited on the surface of the magnetic separation sleeve 5 in the feed bin 102 together with the magnetic substances due to the entrainment effect (the magnetic field of the magnetic system used in this magnetic separator is very strong, the magnetic field gradient is very large, and the magnetic system adopts an interlaced structure between layers). Most of the substances brought into the magnetic separator cavity 1 by the airflow can be captured by the magnetic field on the surface of the magnetic separation sleeve 5. At this time, the mechanical motion device 10 pushes the slider 11 in the slide rail under the control of the electronic signal. The slider 11 is directly connected to the integrated baffle 6, so the slider 11 drives the integrated baffle 6 and the magnetic separation sleeve 5 to move horizontally left and right, and the movement direction is consistent with the movement direction of the slider 11, and its speed is equal to the speed given to the slider 11 by the mechanical motion device 10. Since there is a left baffle 3 between the feed bin 102 and the left discharge bin 103, and there is a right baffle 2 between the feed bin 102 and the right discharge bin 103, and after the magnetic separator is connected to the constant pressure pipeline, the discharge bins 103 on the left and right sides are in a closed state, so the inside thereof always maintains a positive pressure state. When the high-speed airflow of the pneumatic feeding device flows into the cavity of the feed bin 102, the high-speed airflow entering the cavity longitudinally cannot flow through the discharge bins 103 on the left and right sides, ensuring that the fly ash material only exists inside the magnetic separator, ensuring a clean environment;

[0041] Discharging: When the powder enters the cavity of the feed bin 102 and is captured by the magnetic field, since the magnetic inner tube 4 has a fixed position and the magnetic field it generates only exists in the feed bin 102 part, the magnetic separation work also only exists inside the cavity of the feed bin 102. Since there is an integrated baffle 6 in the middle of the magnetic separation sleeves 5 on both sides, when the integrated baffle 6 moves horizontally left and right, it can push the magnetic powder adsorbed on the surface of the magnetic separation sleeve 5 and its entrainment to move horizontally left and right. The magnetic powder undergoes multiple flipping movements under the action of the surface protrusions. The magnetic powder on the magnetic separation sleeve 5 moves relatively due to the flipping of the magnetic field. At this time, the protruding part on the magnetic separation sleeve 5 will hinder the movement of the magnetic material in the direction of the magnetic system, thereby intensifying the flipping of the magnetic powder. The non-magnetic powder cannot be attracted by the magnetic field generated by the magnetic inner tube 4 during the flipping movement of the magnetic powder. Due to its own gravity, it falls to the bottom of the feed bin 102. Since the bottom is a gathering structure, the non-magnetic material will fall near the longitudinal residual material ash collection port 9, and then be extracted from the feed bin 102 cavity through the discharge pipe outside the longitudinal residual material ash collection port 9. The magnetic powder captured by the magnetic field will move horizontally to the discharge bins 103 on both sides under the action of the integrated baffle 6. When the integrated baffle 6 moves to the extreme positions on both sides, that is, when it moves to the position of the left baffle 3 or the right baffle 2, the magnetic field generated by the magnetic inner tube 4 greatly reduces the attraction of the magnetic powder. Therefore, the magnetic powder is no longer attached to the outer layer of the magnetic separation sleeve 5, but falls to the bottom of the discharge bin 103 due to its own gravity. Since the bottom of the discharge bins 103 on both sides is a gathering structure, the magnetic powder is gathered and extracted from the discharge bin 103 cavity by the constant pressure discharge pipe to the magnetic material collection device. During the entire magnetic separation operation, the magnetic separation sleeve 5 moves horizontally left and right, and the cycle is repeated. Continuous feeding can be carried out during the operation of the magnetic separator, and the magnetic separation work is not interrupted.

[0042] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder dry magnetic separator, comprising a main magnetic separation working part, an auxiliary magnetic separation working part and a mechanical movement part, characterized in that: The main working parts of the magnetic separation include: The magnetic inner tube (4) is fixedly installed transversely inside the magnetic separator cavity (1), two permanent magnets and a magnetic conductor are arranged inside the magnetic inner tube (4), and a magnetic separation sleeve (5) is sleeved outside the magnetic inner tube (4), and the outer surface of the magnetic separation sleeve (5) is arranged as evenly arranged circular protrusion-shaped structures; The magnetic separation auxiliary work part includes: The magnetic separator cavity (1) is in the form of a hollow square structure and is placed horizontally on the ground. A pneumatic feed port (101) is fixedly arranged on the upper surface of the magnetic separator cavity (1). The interior of the magnetic separator cavity (1) is divided into discharge bins (103) on the left and right sides and a feed bin (102) in the middle. The discharge bin (103) is in a positive pressure state during magnetic separation. A right baffle (2) fixedly mounted inside the magnetic separator chamber (1) on the boundary line between the discharge bin (103) and the feed bin (102) on the right side; A left baffle (3) fixedly mounted inside the magnetic separator chamber (1) on the boundary line between the discharge bin (103) and the feed bin (102) on the left side; An integrated baffle (6) is fixedly mounted on the outside of the magnetic separation sleeve (5), and the integrated baffle (6) is connected to the magnetic separation sleeve (5) through a through hole; The right magnetic material collection port (7), the left magnetic material collection port (8) and the longitudinal residual material ash collection port (9) are all fixedly mounted on the lower surface of the magnetic separator chamber (1), and the right magnetic material collection port (7), the left magnetic material collection port (8) and the longitudinal residual material ash collection port (9) are all configured as funnel-shaped structures; The mechanical motion part includes: A mechanical motion device (10) is fixedly mounted on the front and rear side walls of the magnetic separator chamber (1), and a sliding block (11) is arranged inside the mechanical motion device (10); The length of the magnetic region of the magnetic inner tube (4) is equal to the width of the feed bin (102), and the positions of the two overlap with each other, and the four groups of magnetic inner tubes (4) are distributed in the order of three, two, three, and two from top to bottom; A discharge pipe for discharging powder is fixedly installed outside the longitudinal residual ash collection port (9), and a feed pipe for feeding is fixedly installed outside the pneumatic feed port (101), and the left magnetic material collection port (8) and the right magnetic material collection port (7) are both connected to a constant pressure discharge pipe during operation; The initial position of the integrated baffle (6) is located on the longitudinal center axis of the magnetic separator chamber (1), and the outer surface of the integrated baffle (6) is closely fitted to the inner wall of the magnetic separator chamber (1); The integrated baffle (6) drives the magnetic separation sleeve (5) to move synchronously left and right, and a sliding structure is formed between the magnetic separation sleeve (5) and the magnetic inner tube (4), and the maximum stroke of the magnetic separation sleeve (5) is to move to fit the inner wall of the side of the magnetic separator chamber (1); Slide blocks (11) are fixedly mounted on the front and rear sides of the integrated baffle (6), and the slide blocks (11) are located in the slide rails of a mechanical motion device (10) fixedly mounted on the front and rear side walls of the magnetic separator chamber (1), and the mechanical motion device (10) is set to an electrically controlled slide rail mode, and the slide blocks (11) drive the integrated baffle (6) to move synchronously through the mechanical motion device (10).

2. A powder dry magnetic separator according to claim 1, characterized in that: A relatively independent space is formed between the feed bin (102) and the discharge bin (103) through the right baffle plate (2) and the left baffle plate (3), and the pneumatic feed port (101) is located directly above the feed bin (102), and the positions of the discharge bins (103) on the left and right sides correspond to the positions of the left magnetic material collection port (8) and the right magnetic material collection port (7) respectively, and the position of the discharge bin (103) corresponds to the position of the longitudinal residual material ash collection port (9), and electric control valves are installed at the outlets of the left magnetic material collection port (8) and the right magnetic material collection port (7).

3. A powder dry magnetic separator according to claim 1, characterized in that: The left and right ends of the magnetic separation sleeve (5) respectively form a through-type sliding structure with the left baffle plate (3) and the right baffle plate (2), and when the integrated baffle plate (6) moves to the limit positions at the left and right ends, the top end of the magnetic separation sleeve (5) is still located in the discharge bin (103).

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