Preparation method of high-frequency manganese zinc ferrite magnetic spacer

Abstract

The invention relates to the technical field of magnetic spacer preparation, and discloses a preparation method of a high-frequency manganese zinc ferrite magnetic spacer, which comprises the following steps: S1, raw material proportioning; s2, primary ball milling and mixing; s3, carrying out pre-sintering treatment; s4, secondary ball milling; s5, forming and processing; and S6, sintering and molding. Through a cleaning mechanism in the ball milling device, when raw materials are milled in a barrel and need to be cleaned, firstly, a door plate is controlled to move to one side of the barrel by a sufficient distance, then, a cleaning plate is controlled to move towards the opening direction of the barrel at the position of the door plate, and in the moving process, the cleaning plate is in full contact with the inner cavity wall of the barrel to form a cleaning and shoveling effect; and residual raw materials on the inner wall of the cylinder body are fully pushed out, and direct cleaning is performed in this way, so that the cleaning efficiency is higher, and the problem that subsequent machining is affected due to the fact that the interior of traditional ball milling equipment is difficult to be fully cleaned quickly after single-time machining is completed can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of magnetic spacer preparation, in particular to a preparation method of a high-frequency manganese-zinc ferrite magnetic spacer. BACKGROUND

[0002] The manganese-zinc ferrite is a kind of soft magnetic ferrite, belongs to a spinel structure, is sintered from oxides of iron, manganese and zinc through a ceramic process, and is specifically a kind of high-frequency magnetic material, whose working frequency can cover a range from kilohertz to megahertz, and is generally widely applied to the use of electronic components such as high-frequency transformers, inductors and filters.

[0003] Patent CN114057500B discloses a pre-filled ball mill, which adds new explosion-proof fiber and quick-setting agent, and grinds zirconium mullite, corundum, kyanite and andalusite to a specific particle size range, so that the final castable has the advantages of fast drying, explosion-proof and wear resistance. In addition, a castable production method using the pre-filled ball mill is also provided, wherein the structure of the pre-filled ball mill includes a filler hopper, a filter cover unit, a radial hole, a sliding hole plate unit, a rotating baffle unit and a cover plate unit, and has the advantages of fast and efficient material adding operation.

[0004] In the preparation process of the high-frequency manganese-zinc ferrite magnetic spacer, the high-frequency manganese-zinc ferrite raw material needs to be ground, and a ball milling device can be used for grinding in the grinding process. Although the above device can realize the function of quickly adding materials during ball milling, it is similar to the existing ball milling device and cannot conveniently clean the inner cavity of the ball milling device after a single ball milling process is completed, so that some materials may be left. After the remaining materials are mixed with the next batch of materials, the ball milling quality will be directly affected, and therefore the preparation method of the high-frequency manganese-zinc ferrite magnetic spacer is proposed to solve the above problems. SUMMARY

[0005] In order to solve the above-mentioned problems, the application provides a preparation method of a high-frequency manganese-zinc ferrite magnetic spacer.

[0006] The preparation method of the high-frequency manganese-zinc ferrite magnetic spacer provided by the application adopts the following technical scheme: A preparation method of a high-frequency manganese-zinc ferrite magnetic spacer, comprising the following steps: S1: raw material proportioning, 52.0-54.5% of Fe2O3, 18.0-22.0% of ZnO and the balance of MnO are selected according to the molar percentage, and the additives include 0.05-0.15% of Nb2O5, 0.1-0.3% of Co2O3, 0.02-0.08% of CaCO3, 0.01-0.05% of SiO2 and 0.03-0.10% of V2O5 according to the total weight of the main components; S2: primary ball milling, the raw materials are subjected to first ball milling in a ball milling device, the ball-to-material ratio is 3:1-5:1, the ball milling speed is 200-300 rpm, the ball milling time is 4-8 hours, and the slurry particle size D50 is controlled to be 0.8-1.2 μm; S3: pre-sintering, the primary-milled raw materials are subjected to spray granulation, and the granulated powder is further subjected to pre-sintering, the pre-sintering temperature is 850-950 ℃, the holding time is 2-4 hours, and the temperature rising rate is 2-5 ℃ / min; S4: secondary ball milling, the pre-sintered powder is subjected to secondary ball milling in a ball milling device, and during the secondary ball milling, 3-5% of polyvinyl alcohol by weight of the powder is added as a binder, and the particle size D50 after ball milling is 0.5-0.8 μm; S5: molding, the secondary-milled slurry is formed into a magnetic spacer blank by injection molding; S6: sintering, the molded blank is subjected to high-temperature sintering, and after the sintering is completed, the blank is subjected to a holding treatment and then cooled to room temperature; The ball milling device comprises a bottom plate and a cylinder, the cylinder is arranged on the top of the bottom plate, a cleaning mechanism is arranged on the top of the bottom plate, the cleaning mechanism comprises a base frame fixedly connected to the top of the bottom plate, first and second support plates are arranged on the outside of the cylinder, the first support plate extends into the inside of the base frame and is connected to the base frame through a rotating shaft, a moving seat is slidably connected to the inside of the base frame, a swing plate is arranged on the top of the moving seat, one end of the swing plate extends into the inside of the moving seat and is connected to the moving seat through a rotating shaft, the other end of the swing plate extends into the inside of the second support plate and is connected to the second support plate through a rotating shaft, a cleaning plate is arranged in the inside of the cylinder, a U-shaped plate is fixedly connected between the first and second support plates, the U-shaped plate penetrates through the first support plate, a moving block is slidably connected to the inside of the U-shaped plate, a pushing plate is integrally formed on the top of the moving block, the pushing plate extends into the inside of the cylinder, an adapter block is rotatably connected to one side of the cleaning plate, one end of the pushing plate is fixedly connected to one side of the adapter block, a frame plate is fixedly connected to one side of the second support plate, a first electric push rod is fixedly connected to one side wall of the frame plate, a door plate is rotatably connected to one end of the first electric push rod, the door plate extends into the inside of the cylinder and matches the cylinder.

[0007] By adopting the technical scheme, when the raw materials are ground in the cylinder and need to be cleaned, the door plate is first controlled to move to one side of the cylinder by a sufficient distance, and then the cleaning plate is controlled to move to the opening direction of the cylinder at the position of the door plate. During the movement, the cleaning plate fully contacts with the inner cavity wall of the cylinder to form a cleaning effect, so that the residual raw materials on the inner wall of the cylinder are fully pushed out. In this way, direct cleaning is performed, which can effectively avoid the problem that the traditional ball mill equipment is difficult to be fully cleaned in the interior after single processing, thereby affecting subsequent processing.

[0008] Preferably, a barrier strip is integrally formed in the interior of the cylinder, the barrier strip is distributed at equal intervals in the interior of the cylinder, a groove is formed in the cleaning plate, the groove is matched with the barrier strip, and the outer side of the cleaning plate is in contact with the inner cavity wall of the cylinder.

[0009] By adopting the technical scheme, the barrier strip blocks the raw materials in the interior of the cylinder, so that the raw materials can fall and roll down at a high place when the cylinder is turned over.

[0010] Preferably, a second electric push rod is fixedly connected to the top wall of the frame plate, one end of the second electric push rod is fixedly connected with a lifting plate, the lifting plate is slidingly connected to the inner side of the frame plate, and a scraping plate is fixedly connected to one end of the lifting plate.

[0011] By adopting the technical scheme, the second electric push rod pushes and pulls the lifting plate up and down after working.

[0012] Preferably, a threaded adjusting rod is rotatably connected to the inner side of the U-shaped plate, the threaded adjusting rod penetrates through a moving block and is connected with the moving block through threads, a first motor is fixedly connected to the outer side of the U-shaped plate, and the first motor is fixedly connected with one end of the threaded adjusting rod through an output shaft.

[0013] By adopting the technical scheme, the threaded adjusting rod drives the moving block to move horizontally after rotating.

[0014] Preferably, a ring-shaped plate is fixedly connected to one side of the cleaning plate, the ring-shaped plate is arranged on the outer side of the connecting block, a first gear ring is fixedly connected to the inner side of the ring-shaped plate, a supporting plate is integrally formed on the pushing plate, a lifting block is slidingly connected to the inner side of the supporting plate, a third electric push rod is fixedly connected to the inner side of the supporting plate, and one end of the third electric push rod is fixedly connected with the bottom of the lifting block.

[0015] By adopting the technical scheme, the third electric push rod pushes and pulls the lifting block up and down after working.

[0016] Preferably, a second motor is fixedly connected in the interior of the lifting block, a first gear is fixedly connected to the second motor through an output shaft, the first gear is arranged on the inner side of the first gear ring, and the first gear is matched with the first gear ring.

[0017] By adopting the technical scheme, the first gear rotates to drive the gear ring to rotate.

[0018] Preferably, the outer part of the barrel is fixedly connected with two ring plates, the outer sides of the two ring plates are fixedly connected with second gear rings, the two ring plates respectively penetrate the first support plate and the second support plate, and the two ring plates are rotationally connected with the first support plate and the second support plate, a round rod is rotationally connected between the first support plate and the second support plate, a third motor is fixedly connected on one side of the first support plate, the third motor is fixedly connected with one end of the round rod through an output shaft, two second gears are fixedly connected on the outer part of the round rod, the two second gears are respectively arranged on the top of the two second gear rings, and the second gears are engaged with the second gear rings.

[0019] By adopting the technical scheme, the second gear rotates to drive the second gear ring to rotate.

[0020] Preferably, a fourth electric push rod is fixedly connected in the inner part of the base frame, and one end of the fourth electric push rod is fixedly connected with one side of the moving seat.

[0021] By adopting the technical scheme, the fourth electric push rod works to push the moving seat.

[0022] Preferably, a material receiving plate is arranged at the bottom of the barrel, the material receiving plate is fixedly connected between the first support plate and the second support plate, the material receiving plate penetrates the second support plate, a discharging port is arranged on the material receiving plate, a material control assembly is arranged on the barrel, an external connecting plate is fixedly connected on the outer side of the barrel, a frame body is arranged on the outer side of the external connecting plate, the frame body penetrates the external connecting plate and matches the external connecting plate, a filter plate is fixedly connected in the inner part of the frame body, a sealing block is arranged on the outer side of the frame body, and the sealing block extends into the inner part of the frame body and matches the frame body.

[0023] By adopting the technical scheme, when the sealing block is taken out, the ball-milled raw material powder can fall downward and out through the filter plate along with the rolling of the barrel.

[0024] Preferably, a first strip plate is fixedly connected on each of the two side walls of the external connecting plate, a first threaded fixing rod is fixedly connected on the top of the first strip plate, a second strip plate is fixedly connected on each of the front and rear side walls of the frame body, the first threaded fixing rod penetrates the second strip plate, a first fixing ring is threadedly connected on the outer part of the first threaded fixing rod, the first fixing ring is in abutment with the top of the second strip plate, an extension plate is fixedly connected on each of the left and right side walls of the frame body, a second threaded fixing rod is fixedly connected on the top of the extension plate, the second threaded fixing rod penetrates the sealing block, a second fixing ring is threadedly connected on the outer part of the second threaded fixing rod, and the second fixing ring is in abutment with the top of the sealing block.

[0025] By adopting the technical scheme, the frame body is sealed after the sealing block is installed.

[0026] In summary, the present application has the following beneficial technical effects: 1. A preparation method of high-frequency manganese-zinc ferrite magnetic spacer, by the cleaning mechanism in the ball milling device, when the raw materials are ground in the cylinder and need to be cleaned, first control the door plate to move to one side of the cylinder at a sufficient distance, then control the cleaning plate to move to the opening direction of the cylinder at the door plate position, in the moving process, the cleaning plate fully contacts with the inner cavity wall of the cylinder to form a cleaning shovel effect, and the residual raw materials on the inner wall of the cylinder are fully pushed out, in this way, direct cleaning is carried out, which can effectively avoid the problem that the traditional ball milling equipment is difficult to clean the inside after single processing is completed, and affects the subsequent processing.

[0027] 2. A preparation method of high-frequency manganese-zinc ferrite magnetic spacer, by the design of the material control assembly, when the powder is ground, the sealing block is taken out from the frame body, when the filter plate faces downward, the powder will fall downward to the receiving plate through the filter plate, so as to carry out the discharging, and during the discharging, the filter plate can ensure that the powder flows out while blocking the internal balls, so as to avoid the balls from falling out together, so that the next ball milling work can be quickly started after discharging, so as to avoid the situation that the balls fall out together in the traditional discharging, and the subsequent steps are more complicated because the balls need to be put in again.

[0028] 3. A preparation method of high-frequency manganese-zinc ferrite magnetic spacer, by accurately controlling and optimizing the proportion of main components, and introducing Nb2O5 and Co2O composite additives, the grain growth can be effectively inhibited, the high-frequency loss can be improved, and CaCO3 and SiO2 are also introduced as grain boundary modifiers, which can effectively improve the resistivity and mechanical strength, so as to improve the use performance of the prepared high-frequency manganese-zinc ferrite magnetic spacer. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the structure of the present application; Figure 2 It is a sectional view of the cylinder in the present application; Figure 3 It is a sectional view of the cleaning plate after being pushed out of the cylinder in the present application; Figure 4 It is a structural schematic view of the receiving plate in the present application; Figure 5 It is a sectional view of the ring plate in the present application; Figure 6 It is a structural schematic view of the frame body after being split in the present application.

[0030] Explanation of reference signs: 1, bottom plate; 2, cylinder; 3, cleaning mechanism; 31, base frame; 32, first support plate; 33, second support plate; 34, moving seat; 35, swing plate; 36, cleaning plate; 37, U-shaped plate; 38, moving block; 39, push plate; 391, connecting block; 392, frame plate; 393, first electric push rod; 394, door plate; 395, barrier strip; 396, groove; 397, second electric push rod; 398, lifting plate; 399, scraping plate; 381, threaded adjusting rod; 382, first motor; 383, annular plate; 384, first ring gear; 385, supporting plate; 386, lifting block; 387, third electric push rod; 388, second motor; 389, first gear; 371, ring plate; 372, second ring gear; 373, round rod; 374, third motor; 375, second gear; 376, fourth electric push rod; 4, material receiving plate; 5, discharge port; 6, material control assembly; 61, external plate; 62, frame; 63, filter plate; 64, sealing block; 65, first strip plate; 66, first threaded fixing rod; 67, second strip plate; 68, first fixing ring; 69, extension plate; 691, second threaded fixing rod; 692, second fixing ring. DETAILED DESCRIPTION

[0031] The following will be described in detail below with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 6 The application will be further described in detail.

[0032] The application discloses a preparation method of a high-frequency Mn-Zn ferrite magnetic separator. Figures 1-6 , the following steps: S1: raw material ratio, 53% of Fe2O3, 20% of ZnO and the balance of MnO are selected according to the molar percentage, and the additives include 0.12% of Nb2O5, 0.2% of Co2O3, 0.06% of CaCO3, 0.03% of SiO2 and 0.5% of V2O5 according to the total weight of the main components; S2: primary ball milling mixing, the raw materials are subjected to primary ball milling in a ball milling device, wherein the ball-to-material ratio is 4:1, the ball milling speed is 260 rpm, the ball milling time is 6 hours, and the slurry particle size D50 is controlled to be 1 μm; S3: pre-sintering treatment, the raw materials after primary ball milling are subjected to spray granulation, and the granulated powder is further subjected to pre-sintering, the pre-sintering temperature is 900 ℃, the holding time is 3 hours, and the heating rate is 4 ℃ / min; S4: secondary ball milling, the powder after pre-sintering is subjected to secondary ball milling in a ball milling device, and during the secondary ball milling, 4% of polyvinyl alcohol is added as a binder according to the weight of the powder, and the particle size D50 after ball milling is 0.6 μm; S5: forming processing, the slurry after secondary ball milling is generated into a magnetic separator blank in a manner of injection molding; S6: sintering forming, high-temperature sintering is performed on the formed blank, the sintering temperature, and after the sintering is completed, it is subjected to heat preservation treatment, and after the heat preservation is completed, it is cooled to room temperature; The ball milling device comprises a bottom plate 1 and a cylinder body 2, the cylinder body 2 is arranged on the top of the bottom plate 1, a cleaning mechanism 3 is arranged on the top of the bottom plate 1, the cleaning mechanism 3 comprises a base frame 31 fixedly connected to the top of the bottom plate 1, a first support plate 32 and a second support plate 33 are arranged on the outer side of the cylinder body 2, the first support plate 32 extends into the inside of the base frame 31 and is connected with the base frame 31 through a rotating shaft, a moving seat 34 is slidably connected in the inside of the base frame 31, a swing plate 35 is arranged on the top of the moving seat 34, one end of the swing plate 35 extends into the inside of the moving seat 34 and is connected with the moving seat 34 through a rotating shaft, the other end of the swing plate 35 extends into the inside of the second support plate 33 and is connected with the second support plate 33 through a rotating shaft; A cleaning plate 36 is arranged in the inside of the cylinder body 2, a U-shaped plate 37 is fixedly connected between the first support plate 32 and the second support plate 33, the U-shaped plate 37 penetrates through the first support plate 32, a moving block 38 is slidably connected to the inside of the U-shaped plate 37, a pushing plate 39 is integrally formed on the top of the moving block 38, the pushing plate 39 extends into the inside of the cylinder body 2, a connecting block 391 is rotatably connected to one side of the cleaning plate 36, one end of the pushing plate 39 is fixedly connected to one side of the connecting block 391, a frame plate 392 is fixedly connected to one side of the second support plate 33, a first electric push rod 393 is fixedly connected to one side wall of the frame plate 392, a door plate 394 is rotatably connected to one end of the first electric push rod 393, the door plate 394 extends into the inside of the cylinder body 2 and matches the cylinder body 2, when the raw materials are ground in the inside of the cylinder body 2 and need to be cleaned, first, the door plate 394 is controlled to move to the side of the cylinder body 2 to a sufficient distance, then the cleaning plate 36 is controlled to move to the opening direction of the cylinder body 2 at the position of the door plate 394, in the moving process, the cleaning plate 36 fully contacts with the inner cavity wall of the cylinder body 2 to form a cleaning effect, so that the raw materials remaining on the inner wall of the cylinder body 2 are fully pushed out, in this way, direct cleaning is carried out, which can effectively avoid the problem that the traditional ball milling equipment is difficult to fully clean the inside after single processing is completed, and affects subsequent processing.

[0033] The barrier strip 395 is integrally formed in the cylinder body 2 and is distributed at equal intervals in the cylinder body 2. The cleaning plate 36 is provided with a groove 396 matched with the barrier strip 395. The outer side of the cleaning plate 36 is in contact with the inner cavity wall of the cylinder body 2. The barrier strip 395 blocks the raw materials in the cylinder body 2, so that the raw materials can fall and roll down from a high place when the cylinder body 2 is turned over. The second electric push rod 397 is fixedly connected to the top wall of the frame plate 392. One end of the second electric push rod 397 is fixedly connected with a lifting plate 398 which is slidingly connected to the inner side of the frame plate 392. The lifting plate 398 is fixedly connected with a scraping plate 399 at one end. The second electric push rod 397 pushes and pulls the lifting plate 398 up and down after working. The U-shaped plate 37 is rotatably connected with a threaded adjusting rod 381 which penetrates the moving block 38 and is connected with the moving block 38 through threads. The first motor 382 is fixedly connected to the outer side of the U-shaped plate 37. The first motor 382 is fixedly connected with the threaded adjusting rod 381 at one end through an output shaft. The threaded adjusting rod 381 drives the moving block 38 to move horizontally after rotating. The cleaning plate 36 is fixedly connected with a ring-shaped plate 383 which is arranged on the outer side of the connecting block 391. The ring-shaped plate 383 is fixedly connected with a first gear ring 384 on the inner side. The pushing plate 39 is integrally formed with a supporting plate 385. The supporting plate 385 is slidingly connected with a lifting block 386 on the inner side. The supporting plate 385 is fixedly connected with a third electric push rod 387. The third electric push rod 387 is fixedly connected with the lifting block 386 at one end. The third electric push rod 387 pushes and pulls the lifting block 386 up and down after working.

[0034] The lifting block 386 is fixedly connected with a second motor 388. The second motor 388 is fixedly connected with a first gear 389 through an output shaft. The first gear 389 is arranged on the inner side of the first gear ring 384 and is matched with the first gear ring 384. The first gear 389 drives the gear ring to rotate after rotating. The cylinder body 2 is fixedly connected with two ring plates 371. The two ring plates 371 are fixedly connected with second gear rings 372 on the outer sides. The two ring plates 371 penetrate the first support plate 32 and the second support plate 33 respectively and are rotatably connected with the first support plate 32 and the second support plate 33 respectively. The first support plate 32 and the second support plate 33 are rotatably connected with a round rod 373, one side of the first support plate 32 is fixedly connected with a third motor 374, the third motor 374 is fixedly connected with one end of the round rod 373 through an output shaft, two second gears 375 are fixedly connected outside the round rod 373, the two second gears 375 are arranged at the top of the two second gear rings 372 respectively, the second gear 375 is engaged with the second gear ring 372, the second gear 375 drives the second gear ring 372 to rotate after rotating, the fourth electric push rod 376 is fixedly connected inside the base frame 31, one end of the fourth electric push rod 376 is fixedly connected with one side of the moving seat 34, the fourth electric push rod 376 drives the moving seat 34 to move after working.

[0035] The bottom of the barrel body 2 is provided with a receiving plate 4, the receiving plate 4 is fixedly connected between the first support plate 32 and the second support plate 33, the receiving plate 4 penetrates the second support plate 33, a discharging port 5 is formed in the receiving plate 4, the barrel body 2 is provided with a material control assembly 6, the barrel body 2 is fixedly connected with an external plate 61 outside, the external plate 61 is provided with a frame body 62 outside, the frame body 62 penetrates the external plate 61 and matches with the external plate 61, a filter plate 63 is fixedly connected inside the frame body 62, the frame body 62 is provided with a sealing block 64 outside, the sealing block 64 extends into the frame body 62 and matches with the frame body 62, when the sealing block 64 is taken out, the ball-milled raw material powder can fall downward and out through the filter plate 63 along with the rolling of the barrel body 2; The two side walls of the external plate 61 are fixedly connected with first strip plates 65, the first strip plates 65 are fixedly connected with first threaded fixing rods 66 at the top, the frame body 62 is fixedly connected with second strip plates 67 on the front and rear side walls, the first threaded fixing rods 66 penetrate the second strip plates 67, the first threaded fixing rods 66 are externally threadedly connected with first fixing rings 68, the first fixing rings 68 are in close contact with the top of the second strip plates 67, the frame body 62 is fixedly connected with extension plates 69 on the left and right side walls, the extension plates 69 are fixedly connected with second threaded fixing rods 691 at the top, the second threaded fixing rods 691 penetrate the sealing block 64, the second threaded fixing rods 691 are externally threadedly connected with second fixing rings 692, the second fixing rings 692 are in close contact with the top of the sealing block 64, the sealing block 64 seals the frame body 62 after being installed.

[0036] In actual operation, first connect the ball mill device to the power supply, and the balls not drawn in the ball drawing and the manganese zinc ferrite raw materials to be ground can be put through the opening of the external connecting plate 61, and can also be put through the opening of the door plate 394. After the feeding is completed, the third motor 374 works and drives the round rod 373 to rotate, the round rod 373 drives the two second gears 375 connected to it to rotate, the second gears 375 drive the second gear ring 372 to rotate, the second gear ring 372 drives the ring plate 371 to rotate, and the ring plate 371 drives the cylinder 2 to rotate. During the rotation of the cylinder 2, the raw materials and balls in it are conveyed to a high place under the cooperation of the blocking strip 395 and fall under the influence of gravity, and the balls continue to fall on the raw materials after falling, so as to achieve the purpose of ball milling; During ball milling, the sealing block 64 is installed inside the frame 62, which can seal the sealing frame to prevent raw materials from leaking. The sealing block 64 can also provide support for the filter plate 63 to prevent the filter plate 63 from being damaged by the impact force when the balls hit it. After the powder ball milling is completed, rotate the second fixed ring 692 and remove it, and then remove the sealing block 64 from the inside of the frame 62. Then control the cylinder 2 to rotate slowly to reduce the impact force when the balls roll in the cylinder 2. When the cylinder 2 slowly rotates to the point where the filter plate 63 is facing directly downward, the well-milled powder will fall through the filter plate 63 to the receiving plate 4 below, and then slide down the downward inclined surface in the receiving plate 4 to the discharge port 5 for discharge. In this way, the powder is discharged, and at the same time, the balls are blocked to prevent them from falling together, so that the next ball milling work can be quickly started after the discharge. Similarly, when the balls need to be removed, rotate the first fixed ring 68 and remove it, then remove the frame 62. At this time, the balls fall out through the opening part of the external connecting plate 61; When there is too much residual powder in the cylinder 2 and it needs to be cleaned, first work the first electric push rod 393 and pull the door plate 394 to the side of the lifting plate 398 to a sufficient distance, then work the first motor 382 and drive the threaded adjusting rod 381 to rotate, the threaded adjusting rod 381 drives the moving block 38 to move, the moving block 38 drives the push plate 39 to move, the push plate 39 drives the connecting block 391 to move, the connecting block 391 drives the cleaning plate 36 to move towards the door plate 394. During the movement of the cleaning plate 36, it fully contacts the inner cavity wall of the cylinder 2 to form a cleaning effect, so as to fully push the residual raw materials on the inner wall of the cylinder 2. In this way, the problem of difficult and insufficient cleaning of the traditional ball mill after single processing is effectively solved, which affects the subsequent processing; During the above control of the moving of the cleaning plate 36, the third electric push rod 387 works and pushes the lifting block 386 upward, the lifting block 386 drives the second motor 388 to move, the second motor 388 drives the first gear 389 to move, so as to drive the first gear 389 to move upward to engage with the inner side of the first gear ring 384, at the same time, the second electric push rod 397 works and pushes the lifting plate 398 downward, the lifting plate 398 drives the scraping plate 399 to move downward, after the cleaning plate 36 moves to be attached to the scraping plate 399, the second motor 388 works and drives the first gear 389 to rotate, the first gear 389 drives the first gear ring 384 to rotate, the first gear ring 384 drives the annular plate 383 to rotate, and the annular plate 383 drives the cleaning plate 36 to rotate, so that the cleaning plate 36 can be scraped on the cleaning plate 36 during the rotation, and the residual powder on the surface of the cleaning plate 36 can be scraped off quickly, and the scraped powder is also received by the receiving plate 4 for centralized discharge and treatment. Finally, during the above ball milling and discharging, the fourth electric push rod 376 works and pushes the moving seat 34, the moving seat 34 moves and drives the swing plate 35 to swing, and the swing plate 35 drives the second support plate 33 to be pulled during the swinging, and through the above connection relationship, it can be known that the second support plate 33 drives the cylinder 2 to swing around the shaft connected between the first support plate 32 and the base frame 31 as the shaft center, the inclination of the cylinder 2 located at the opening on the side of the door plate 394 is adjusted through the swinging of the cylinder 2, which is more conducive to the sliding and discharging of the powder, and can flexibly match the different angle use requirements of the workers, and improve the flexibility during use.

[0037] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A method for preparing a high-frequency manganese-zinc ferrite magnetic separator, characterized in that: Includes the following steps: S1: Raw material ratio, selected by molar percentage: 52.0-54.5% Fe2O3, 18.0-22.0% ZnO and balance MnO, and additives by total weight of main components: 0.05-0.15% Nb2O5, 0.1-0.3% Co2O3, 0.02-0.08% CaCO3, 0.01-0.05% SiO2 and 0.03-0.10% V2O5; S2: Primary ball milling and mixing. The raw materials are first ball milled in a ball milling device with a ball-to-material ratio of 3:1-5:1, a ball milling speed of 200-300 rpm, a ball milling time of 4-8 hours, and a slurry particle size D50 controlled at 0.8-1.2μm. S3: Pre-calcination treatment, spray granulation of the raw material after ball milling, and further pre-calcination of the granulated powder. The pre-calcination temperature is 850-950℃, the holding time is 2-4 hours, and the heating rate is 2-5℃ / min. S4: Secondary ball milling. The pre-calcined powder is ball-milled in a ball milling device. During the secondary ball milling, 3-5% polyvinyl alcohol by weight of the powder is added as a binder. The particle size D50 after ball milling is 0.5-0.8μm. S5: Molding process, the slurry after secondary ball milling is injection molded to generate magnetic separator blanks; S6: Sintering and forming, the formed blank is sintered at high temperature, and after sintering, it is kept at a high temperature and then cooled to room temperature. The ball milling device includes a base plate (1) and a cylinder (2). The cylinder (2) is disposed on the top of the base plate (1). A cleaning mechanism (3) is disposed on the top of the base plate (1). The cleaning mechanism (3) includes a base frame (31). The base frame (31) is fixedly connected to the top of the base plate (1). A first support plate (32) and a second support plate (33) are disposed on the outer side of the cylinder (2). The first support plate (32) extends into the interior of the base frame (31) and is connected to the base frame (31) through a rotating shaft. A movable seat (34) is slidably connected inside the base frame (31). A swing plate (35) is disposed on the top of the movable seat (34). One end of the swing plate (35) extends into the inner side of the movable seat (34) and is connected to the movable seat (34) through a rotating shaft. The other end of the swing plate (35) extends into the inner side of the second support plate (33) and is connected to the second support plate (33) through a rotating shaft. The cylinder (2) The interior is provided with a cleaning plate (36). A U-shaped plate (37) is fixedly connected between the first support plate (32) and the second support plate (33). The U-shaped plate (37) passes through the first support plate (32). A moving block (38) is slidably connected to the inner side of the U-shaped plate (37). A push plate (39) is integrally formed on the top of the moving block (38). The push plate (39) extends into the interior of the cylinder (2). A connecting block (391) is rotatably connected to one side of the cleaning plate (36). One end of the push plate (39) is fixedly connected to one side of the connecting block (391). A frame plate (392) is fixedly connected to one side of the second support plate (33). A first electric push rod (393) is fixedly connected to one side wall of the frame plate (392). A door panel (394) is rotatably connected to one end of the first electric push rod (393). The door panel (394) extends into the interior of the cylinder (2) and matches the cylinder (2).

2. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: The cylinder (2) has an integrally formed barrier strip (395) inside. The barrier strip (395) is evenly distributed inside the cylinder (2). The cleaning plate (36) has a groove (396) that matches the barrier strip (395). The outer side of the cleaning plate (36) is in contact with the inner wall of the cylinder (2).

3. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: A second electric push rod (397) is fixedly connected to the top wall of the frame plate (392). A lifting plate (398) is fixedly connected to one end of the second electric push rod (397). The lifting plate (398) is slidably connected to the inner side of the frame plate (392). A scraper plate (399) is fixedly connected to one end of the lifting plate (398).

4. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: A threaded adjusting rod (381) is rotatably connected to the inner side of the U-shaped plate (37). The threaded adjusting rod (381) passes through the moving block (38) and is connected to the moving block (38) by a thread. A first motor (382) is fixedly connected to the outer side of the U-shaped plate (37). The first motor (382) is fixedly connected to one end of the threaded adjusting rod (381) through an output shaft.

5. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: A ring plate (383) is fixedly connected to one side of the cleaning plate (36). The ring plate (383) is located on the outside of the connecting block (391). A first toothed ring (384) is fixedly connected to the inside of the ring plate (383). A support plate (385) is integrally formed on the push plate (39). A lifting block (386) is slidably connected to the inside of the support plate (385). A third electric push rod (387) is fixedly connected to the inside of the support plate (385). One end of the third electric push rod (387) is fixedly connected to the bottom of the lifting block (386).

6. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 5, characterized in that: The lifting block (386) is internally fixedly connected to a second motor (388), and the second motor (388) is fixedly connected to a first gear (389) through an output shaft. The first gear (389) is located inside the first gear ring (384), and the first gear (389) matches the first gear ring (384).

7. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: The cylinder (2) is fixedly connected to two ring plates (371) on the outside. The outer sides of the two ring plates (371) are fixedly connected to second gear rings (372). The two ring plates (371) pass through the first support plate (32) and the second support plate (33) respectively. The two ring plates (371) are rotatably connected to the first support plate (32) and the second support plate (33) respectively. A round rod (373) is rotatably connected between the first support plate (32) and the second support plate (33). A third motor (374) is fixedly connected to one side of the first support plate (32). The third motor (374) is fixedly connected to one end of the round rod (373) through the output shaft. Two second gears (375) are fixedly connected to the outside of the round rod (373). The two second gears (375) are respectively set on the top of the two second gear rings (372). The second gears (375) mesh with the second gear rings (372).

8. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: A fourth electric push rod (376) is fixedly connected inside the base frame (31), and one end of the fourth electric push rod (376) is fixedly connected to one side of the movable seat (34).

9. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 1, characterized in that: The bottom of the cylinder (2) is provided with a receiving plate (4), which is fixedly connected between the first support plate (32) and the second support plate (33). The receiving plate (4) penetrates the second support plate (33). A discharge port (5) is provided on the receiving plate (4). A material control component (6) is provided on the cylinder (2). An outer plate (61) is fixedly connected to the outside of the cylinder (2). A frame (62) is provided on the outside of the outer plate (61). The frame (62) penetrates the outer plate (61) and matches the outer plate (61). A filter plate (63) is fixedly connected inside the frame (62). A sealing block (64) is provided on the outside of the frame (62). The sealing block (64) extends into the frame (62) and matches the frame (62).

10. The method for preparing a high-frequency manganese-zinc ferrite magnetic separator according to claim 9, characterized in that: The outer plate (61) is fixedly connected to both sides of the first strip plate (65), and the top of the first strip plate (65) is fixedly connected to the first threaded fixing rod (66). The frame (62) is fixedly connected to both the front and rear sides of the second strip plate (67). The first threaded fixing rod (66) passes through the second strip plate (67). The first threaded fixing rod (66) is connected to the outside of the first threaded fixing rod (66) by a thread, and the first fixing ring (68) is in contact with the top of the second strip plate (67). The frame (62) is fixedly connected to both the left and right sides of the left and right sides of the frame (62). The top of the extension plate (69) is fixedly connected to the second threaded fixing rod (691). The second threaded fixing rod (691) passes through the sealing block (64). The second threaded fixing rod (691) is connected to the outside of the second threaded fixing rod (691) by a thread, and the second fixing ring (692) is in contact with the top of the sealing block (64).

Images