High-strength ceramic clay and its preparation process

Abstract

The application discloses high-strength pottery clay and a preparation process thereof, relates to the field of pottery clay preparation, and comprises the following components: kaolinite 40-60 parts, high-alumina clay 1-5 parts, quartz sand 10-20 parts, white clay 10-20 parts, black clay 20-30 parts, bentonite 5-10 parts, water 50-60 parts, grinding aid 0.5-0.8 parts, and S1, raw material crushing, S2, primary iron removal, S3, mixed ball milling, S4, secondary iron removal, S5, pressure filtration, and S6, vacuum mud conditioning. The kaolinite is used as the main material, a certain amount of high-alumina clay and quartz sand are further added, Al2O3 in the high-alumina clay and SiO2 in the quartz sand are mixed, and then mullite crystals with good performance are formed, so that the strength of the ceramic product prepared after firing is high.

Description

Technical Field

[0001] This invention relates to clay preparation technology, specifically to a high-strength clay and its preparation process. Background Technology

[0002] During the production of clay, iron removal is required. The existing iron removal methods mainly use magnetic separators or electromagnetic rods to remove iron impurities from the clay. Before mixing, the raw materials for clay need to be crushed initially. After the initial crushing, the raw materials need to undergo the first iron removal process to remove particles with high iron content or iron filings from the wear of the crushing equipment.

[0003] After initial crushing, the raw material particles contain iron filings and portions with high iron content. While dry magnetic separators can remove iron impurities to some extent, the strong attraction of these iron filings and high-iron-content particles to the magnets means they are easily attracted again during their fall when removed from the weakest point of the magnet, causing them to repeatedly adhere to the screen cylinder surface and become clogged. This also tends to remove particles with moderate iron content that are still usable after further crushing, resulting in raw material loss. While direct adsorption by electromagnetic rods has relatively reliable adsorption capacity, as the amount of material adsorbed on the surface of the rods increases, the attraction to the outermost particles decreases, leading to reduced screening efficiency. This often necessitates machine shutdown for cleaning, which is time-consuming and impacts production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a high-strength clay and its preparation process to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-strength clay, the raw materials of which, by weight, include: 40-60 parts kaolinite, 1-5 parts high-alumina clay, 10-20 parts quartz sand, 10-20 parts white mud, 20-30 parts black mud, 5-10 parts bentonite, 50-60 parts water, and 0.5-0.8 parts grinding aid.

[0007] Furthermore, the preparation process of the high-strength clay specifically includes the following steps:

[0008] S1. Raw material crushing: The kaolinite raw material is crushed, and the crushed raw material is screened to obtain the required raw material;

[0009] S2. Initial iron removal: Iron is removed from the crushed iron-containing raw materials using a dry iron removal device.

[0010] S3: Mixing and ball milling: Mix the raw materials according to the formula ratio and send them into a ball mill with water for ball milling to obtain a slurry;

[0011] S4: Iron removal is performed again by using a wet magnetic separator to remove iron from the slurry, resulting in clay slurry;

[0012] S5: Press filtration. The clay slurry is divided into press bags and the excess water is squeezed out to obtain clay cake.

[0013] S6: Vacuum kneading. The clay cake enters the vacuum chamber of the vacuum kneading machine for kneading and extrusion to obtain high-strength clay material.

[0014] Furthermore, the dry iron removal device in S2 includes a conveying device for conveying materials in a horizontal plane, and further includes:

[0015] At least three electromagnetic rods, each with its central axis parallel to each other and parallel to the horizontal plane, the electromagnetic rods can be moved to a first plane or a second plane, and the movement directions of two adjacent electromagnetic rods are opposite.

[0016] At least three cleaning devices are provided, each located on one side of each electromagnetic rod, and the cleaning devices can be translated on the second plane.

[0017] When the electromagnetic rod is located on the first plane, it can be energized to generate a magnetic field to attract iron impurities in the conveyed material. When the electromagnetic rod is located on the second plane, the cleaning device moves to one side of the electromagnetic rod and cleans the surface of the electromagnetic rod after the electromagnetic rod is de-energized and the magnetic field is turned off.

[0018] The first driving mechanism is used to drive the electromagnetic rod to move;

[0019] The second drive mechanism is used to drive the cleaning device to move.

[0020] Furthermore, the conveying device includes a belt conveyor with frames installed on both sides. Both ends of the electromagnetic rod are fixedly connected to shaft A, the central axis of shaft A coincides with the central axis of the electromagnetic rod, and one end of shaft A is fixedly connected to a driving component A, which is used to drive the electromagnetic rod to rotate around the central axis of shaft A.

[0021] Furthermore, the electromagnetic rods that move synchronously in the same direction are connected to a second support. The second support includes two U-shaped rods and two vertical rods. The middle parts of the two U-shaped rods are fixedly connected to one end of the two vertical rods, and the ends of the two U-shaped rods are rotatably connected to the surfaces of each A-axis located on the same side. A second track is slidably connected to one side of the U-shaped rods. The second track is arranged vertically and is fixedly installed on one side of the frame. A C-drive component for driving the U-shaped rods to move on the second track is fixedly connected to one end of each of the two vertical rods.

[0022] Furthermore, a first component is provided between the two vertical rods located on the same side. The first component includes a first gear and two first racks. The two first racks are symmetrically fixedly installed on opposite sides of the two vertical rods located on the same side. The first gear is meshed with both first racks. One side of the first rack is rotatably connected to the frame.

[0023] Furthermore, a support block is provided at the middle position of the vertical rod, one side of the support block is fixedly connected to one side of the frame, and the inner wall of the support block is slidably connected to the surface of the vertical rod.

[0024] Furthermore, the cleaning device includes a housing, the extended line of which is parallel to the central axis of the electromagnetic rod. A third track is provided on both sides of the housing, the extended line of which is parallel to a second plane. One side of the third track is fixedly connected to one side of the frame. The housing can move along the third track. An auger for conveying materials is provided at the bottom of the housing, with both ends of the auger rotatably connected to the inner wall of the housing. One side of the housing has an opening adapted to the electromagnetic rod. The two sides of the housing have slots adapted to the A-axis. One side of the housing is connected to a second drive mechanism.

[0025] Furthermore, a second gear is rotatably connected to one side of the housing, and a first transmission wheel is fixedly connected to one side of the second gear. The first transmission wheel is connected to the second transmission wheel via a transmission belt, and one side of the second transmission wheel is fixedly connected to one end of the auger.

[0026] Furthermore, a third gear is fixedly connected to one end of the A shaft located on the same side as the second gear, and a scraper is fixedly installed inside the housing. After the A shaft abuts against the bayonet, the second gear and the third gear mesh, and the side of the scraper abuts against the surface of the electromagnetic rod.

[0027] Furthermore, the second drive mechanism includes two third brackets, one side of which is fixedly connected to one side of each housing, and the two third brackets are slidably connected to two third tracks respectively. A push plate is fixedly connected between the two third brackets, and a D drive component is fixedly connected to one side of the push plate.

[0028] Compared with the prior art, the high-strength clay and its preparation process provided by the present invention have the following beneficial effects:

[0029] In this high-strength clay and its preparation process, when the C-driven component drives the vertical rod of a second support to move vertically, the first rack on the vertical rod moves vertically, thereby driving the first gear to rotate and causing another first rack connected to the first gear to move in the opposite direction vertically. The other first rack will drive the vertical rod connected to it to move, thereby realizing that the electromagnetic rods connected to the two second supports move in opposite directions, so that each electromagnetic rod can move alternately to the first plane to remove iron. At the same time, the electromagnetic rods that move to the second plane can be cleaned in time, which improves the efficiency of iron removal and avoids the problem of directly removing raw material particles with moderate iron content but still usable value in the raw material after the initial crushing, thus improving the utilization rate of raw materials.

[0030] By using kaolinite as the main material and adding a certain amount of high-alumina clay and quartz sand, and mixing it with Al2O3 in the high-alumina clay and SiO2 in the quartz sand, mullite crystals with good properties are formed, which makes the ceramic products made after firing have high strength and avoids defects such as roller marks in the green body during the firing process to a certain extent.

[0031] When the electromagnetic rod moves to the second plane, the second drive mechanism drives the box on one side of the electromagnetic rod to move. When the box moves to the point where it abuts against the A rotating shaft, the electromagnetic rod is de-energized and the magnetic field is turned off. The material adsorbed on the electromagnetic rod falls into the box under its own weight. Since it takes a certain amount of time for the magnetic field of the electromagnetic rod to completely disappear, a small amount of material will still be adsorbed on its surface. The A drive component drives the electromagnetic rod to continue rotating so that the surface of the electromagnetic rod can be scraped off by the scraper, so that the material on the surface of the electromagnetic rod falls into the box. Thus, the electromagnetic rod is cleaned while iron impurities are recovered. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 This is a flowchart illustrating the preparation process of high-strength clay according to an embodiment of the present invention.

[0034] Figure 2 This is a front perspective first perspective view of the overall structure of the dry iron removal device provided in an embodiment of the present invention;

[0035] Figure 3 This is a second perspective view of the overall structure of the dry iron removal device provided in an embodiment of the present invention.

[0036] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged view of A in the middle;

[0037] Figure 5 Provided for embodiments of the present invention Figure 3 Enlarged view of B in the middle;

[0038] Figure 6 This is a rear perspective view of the overall structure of the dry iron removal device provided in an embodiment of the present invention;

[0039] Figure 7 Provided for embodiments of the present invention Figure 6 Enlarged view of C in the middle;

[0040] Figure 8 This is a partial structural diagram of the electromagnetic rod and infrared sensor provided in an embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of a first type of first driving mechanism provided in an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Conveying device; 11. Belt conveyor; 12. Frame; 2. Electromagnetic rod; 3. Cleaning device; 31. Box; 32. Third track; 33. Screwdriver; 34. Opening; 35. Bayonet; 36. Second gear; 37. Transmission belt; 38. Third gear; 39. Scraper; 4. First drive mechanism; 41. First support; 42. First track; 43. B drive component; 44. U-shaped rod; 45. Vertical rod; 46. Second track; 47. C drive component; 48. First component; 481. First gear; 482. First rack; 49. Support block; 5. Second drive mechanism; 51. Third support; 52. Push plate; 53. D drive component; 6. A rotating shaft; 7. A drive component; 8. Infrared sensor. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Example:

[0046] Please see Figures 1-9A high-strength clay, the raw materials of which, by weight, include: 40-60 parts kaolinite, 1-5 parts high-alumina clay, 10-20 parts quartz sand, 10-20 parts white mud, 20-30 parts black mud, 5-10 parts bentonite, 50-60 parts water, and 0.5-0.8 parts grinding aid.

[0047] A process for preparing high-strength clay specifically includes the following steps:

[0048] S1. Raw material crushing: The kaolinite raw material is crushed, and the crushed raw material is screened to obtain the required raw material;

[0049] S2. Initial iron removal: Iron is removed from the crushed iron-containing raw materials using a dry iron removal device.

[0050] S3: Mixing and ball milling: Mix the raw materials according to the formula ratio and send them into a ball mill with water for ball milling to obtain a slurry;

[0051] S4: Iron removal is performed again by using a wet magnetic separator to remove iron from the slurry, resulting in clay slurry;

[0052] S5: Press filtration. The clay slurry is divided into press bags and the excess water is squeezed out to obtain clay cake.

[0053] S6: Vacuum kneading. The clay cake enters the vacuum chamber of the vacuum kneading machine for kneading and extrusion to obtain high-strength clay material.

[0054] By using kaolinite as the main material and adding a certain amount of high-alumina clay and quartz sand, and mixing it with Al2O3 in the high-alumina clay and SiO2 in the quartz sand, mullite crystals with good properties are formed, which makes the ceramic products made after firing have high strength and avoids defects such as roller marks in the green body during the firing process to a certain extent.

[0055] The dry iron removal device includes a conveying device 1 for conveying materials in a horizontal plane, and further includes:

[0056] At least three electromagnetic rods 2, the central axes of each electromagnetic rod 2 are parallel to each other and parallel to the horizontal plane, the electromagnetic rods 2 can be moved to the first plane or the second plane, and the movement directions of two adjacent electromagnetic rods 2 are opposite.

[0057] At least three cleaning devices 3 are located on one side of each electromagnetic rod 2, and the cleaning devices 3 can be translated on the second plane.

[0058] When the electromagnetic rod 2 is located on the first plane, the electromagnetic rod 2 can be energized to generate a magnetic field to adsorb iron impurities in the conveyed material. When the electromagnetic rod 2 is located on the second plane, the cleaning device 3 moves to one side of the electromagnetic rod 2 and cleans the surface of the electromagnetic rod 2 after the electromagnetic rod 2 is de-energized and the magnetic field is turned off.

[0059] The first driving mechanism 4 is used to drive the electromagnetic rod 2 to move.

[0060] The second drive mechanism 5 is used to drive the cleaning device 3 to move.

[0061] In one embodiment of the present invention, the conveying device 1 includes a belt conveyor 11, and frames 12 are installed on both sides of the belt conveyor 11, the frames 12 being used to support the belt conveyor 11;

[0062] In one embodiment of the present invention, the frame 12 is composed of an upper frame and a lower frame, which are fixedly connected by a support arm. The frame 12 is used to provide support for the electromagnetic rod 2 and the cleaning device 3.

[0063] In one embodiment of the present invention, when the electromagnetic rod 2 is located on the first plane, the bottom of the electromagnetic rod 2 is a certain distance T1 from the top of the conveyed material, which satisfies: 0 < T1 < 2 mm.

[0064] In one embodiment of the present invention, both ends of the electromagnetic rod 2 are fixedly connected to A rotating shafts 6, the central axis of A rotating shafts 6 coincides with the central axis of the electromagnetic rod 2, and one end of one of the A rotating shafts 6 is fixedly connected to an A driving component 7, which is used to drive the electromagnetic rod 2 to rotate around the central axis of A rotating shaft 6.

[0065] In one embodiment of the present invention, the A driving component 7 is an electric motor, a hydraulic motor, or a pneumatic motor.

[0066] In one embodiment of the present invention, the specific structure of the first driving mechanism 4 is not limited, and a first method for driving the electromagnetic rod 2 to move is provided:

[0067] The surfaces of the A-shafts 6 at both ends of the electromagnetic rod 2 are rotatably connected to the first brackets 41. The first rail 42 is slidably connected to one side of the first brackets 41. The first rail 42 is set in the vertical direction and is fixedly installed on one side of the frame 12. One end of the two first brackets 41 is fixedly connected to the B-drive component 43 for driving them to move on the first rail 42.

[0068] In one embodiment of the present invention, the B driving component 43 is a cylinder or a hydraulic cylinder, and the piston rod of the cylinder or hydraulic cylinder is connected to the first bracket 41.

[0069] It should be noted that in this method, the movement of each electromagnetic rod 2 is driven independently by two B-drive components 43 connected to the first brackets 41 at both ends, such as... Figure 9 As shown;

[0070] In one embodiment of the present invention, a second method for driving the electromagnetic rod 2 to move is provided:

[0071] Electromagnetic rods 2, which move synchronously in the same direction, are connected to a second support. The second support includes two U-shaped rods 44 and two vertical rods 45. The middle parts of the two U-shaped rods 44 are fixedly connected to one end of the two vertical rods 45, and the ends of the two U-shaped rods 44 are rotatably connected to the surfaces of the A-shafts 6 located on the same side. A second track 46 is slidably connected to one side of the U-shaped rods 44. The second track 46 is set in the vertical direction and is fixedly installed on one side of the frame 12. A C-drive component 47 for driving the U-shaped rods 44 to move on the second track 46 is fixedly connected to one end of each of the two vertical rods 45.

[0072] In one embodiment of the present invention, the C-drive component 47 is a cylinder or a hydraulic cylinder, and the piston rod of the cylinder or hydraulic cylinder is connected to the vertical rod 45;

[0073] It should be noted that this method differs from the first method described above in that several electromagnetic rods 2 that need to move in the same direction can be driven synchronously by two C-drive components 47 on both sides, ensuring the synchronicity of the electromagnetic rods 2 when they move in the same direction. That is, the electromagnetic rods 2 that need to move in the same direction are connected by the second bracket. When the electromagnetic rods 2 are working, the electromagnetic rods 2 located on the first plane are connected by the same set of second brackets. When the same set of C-drive components 47 are working, they will drive all the electromagnetic rods 2 in the first plane to the second plane. The movement of each electromagnetic rod 2 located on the second plane is similar. It should be understood that the U-shaped rod 44 can have multiple ends, depending on the number of electromagnetic rods 2. In the illustration of this embodiment, the U-shaped rod 44 is only provided with two ends, but it is not limited to two ends, and the more ends, the better. It should be considered whether the force applied by each electromagnetic rod 2 to the U-shaped connecting rod and the vertical rod 45 is within its working capacity, that is, to a certain extent, to ensure the service life of the U-shaped connecting rod, the vertical rod 45 and the C drive component 47. In this embodiment, the number of U-shaped rod ends is preferably 2 to 5.

[0074] In one embodiment of the present invention, a third method for driving the electromagnetic rod 2 to move is provided:

[0075] Compared with the second method described above, the difference is that only one of the second brackets is connected to the C drive component 47, and a first component 48 is provided between the two vertical rods 45 located on the same side. The C drive component 47 is connected to the vertical rod 45 of the second bracket. The first component 48 includes a first gear 481 and two first racks 482. The two first racks 482 are symmetrically fixedly installed on opposite sides of the two vertical rods 45 located on the same side. The first gear 481 is meshed with both first racks 482. One side of the first rack 482 is rotatably connected to the frame 12.

[0076] It should be noted that, in this method, the length of one of the second support's vertical rods 45 needs to be relatively long to allow the other second support to move via the first component 48. To avoid poor stability when the long vertical rod 45 moves, a support block 49 can be provided in the middle of the vertical rod 45. One side of the support block 49 is fixedly connected to one side of the frame 12, and the inner wall of the support block 49 is slidably connected to the surface of the vertical rod 45, thereby improving the stability of the vertical rod 45 when it moves. When the vertical movement paths of the two vertical rods 45 overlap, the positions of the two vertical rods 45 moving in opposite directions can be adjusted so that they are not on the same vertical plane, that is, they will not obstruct each other when they move vertically.

[0077] The C-drive component 47 drives one of the second supports to move, which in turn, in conjunction with the first component 48, drives the other second component to move in the opposite direction. This allows the two adjacent electromagnetic rods 2 to move in opposite directions. Specifically, when the C-drive component 47 drives the vertical rod 45 of the second support to move vertically, the first rack 482 on the vertical rod 45 moves vertically, thereby driving the first gear 481 to rotate. This causes the other first rack 482, which is meshed with the first gear 481, to move in the opposite direction vertically. The other first rack 482 then drives the vertical rod 45 connected to it to move, thus enabling the electromagnetic rods 2 connected to the two second supports to move in opposite directions.

[0078] In one embodiment of the present invention, the cleaning device 3 includes a housing 31, the extended line of the housing 31 being parallel to the central axis of the electromagnetic rod 2, third tracks 32 being provided on both sides of the housing 31, the extended line of the third tracks 32 being parallel to a second plane, one side of the third track 32 being fixedly connected to one side of the frame 12, the housing 31 being movable along the third track 32, and an auger 33 for conveying materials being provided at the bottom of the housing 31, the two ends of the auger 33 being rotatably connected to the inner wall of the housing 31, and one side of the housing 31 being provided with An opening 34 adapted to the electromagnetic rod 2 is provided on both sides of the housing 31, and a bayonet 35 adapted to the A rotating shaft 6 is provided on both sides. A second drive mechanism 5 is connected to one side of the housing 31. When the housing 31 moves, the bayonet 35 on it can abut against the surface of the A rotating shaft 6, and the A rotating shaft 6 can rotate within the bayonet 35. A second gear 36 is rotatably connected to one side of the housing 31. A first transmission wheel is fixedly connected to one side of the second gear 36. The first transmission wheel is connected to the second transmission wheel through a transmission belt 37. One side of the second transmission wheel is fixedly connected to one end of the auger 33.

[0079] In one embodiment of the present invention, a third gear 38 is fixedly connected to one end of the A rotating shaft 6 located on the same side as the second gear 36. After the A rotating shaft 6 abuts against the bayonet 35, the second gear 36 and the third gear 38 mesh.

[0080] In one embodiment of the present invention, a scraper 39 is fixedly installed inside the housing 31. After the A rotating shaft 6 abuts against the bayonet 35, the side of the scraper 39 abuts against the surface of the electromagnetic rod 2.

[0081] It should be noted that the second gear 36 is preferably located on the opposite side of the A drive component 7, thereby dispersing the gravity acting on both ends of the electromagnetic rod 2. The bayonet 35 can be coated with lubricating oil or grease to reduce the frictional resistance when the A shaft 6 rotates. An outlet is also provided on one side of the bottom of the box 31. When the auger 33 rotates, it transports the material to the outlet. A receiving container or conveying pipe can be placed at the outlet. The two sides of the box 31 located above the auger 33 are inclined. The material falling from the electromagnetic rod 2 will be guided by the inner wall of the box 31 into the auger 33 for conveying.

[0082] In one embodiment of the present invention, the cleaning device is implemented as follows: when the electromagnetic rod 2 moves to the second plane, the second driving mechanism 5 drives the housing 31 on one side of the electromagnetic rod 2 to move. When the housing 31 moves to the position where the bayonet 35 abuts against the A rotating shaft 6, the electromagnetic rod 2 is de-energized and the magnetic field is turned off. The material adsorbed on the electromagnetic rod 2 falls into the housing 31 under its own weight. Since it takes a certain amount of time for the magnetic field of the electromagnetic rod 2 to completely disappear, a small amount of material will still be adsorbed on its surface. The A driving component 7 drives the electromagnetic rod 2 to continue to rotate so as to scrape the surface of the electromagnetic rod 2 by the scraper 39, so that the material on the surface of the electromagnetic rod 2 falls into the housing 31. Then, before the electromagnetic rod 2 moves downward, the housing 31 moves to the initial position, so as not to obstruct the movement of the electromagnetic rod 2.

[0083] In one embodiment of the present invention, a specific example of a second driving member is provided, wherein the second driving mechanism 5 is a cylinder or a hydraulic cylinder, and the piston rod of the cylinder or hydraulic cylinder is connected to one side of the housing 31.

[0084] It should be noted that in this method, each box 31 is provided with a second driving component on one side, and the movement of each box 31 is independent.

[0085] In one embodiment of the present invention, another specific example of a second driving component is provided. The second driving mechanism 5 includes two third supports 51. One side of the third support 51 is fixedly connected to one side of each housing 31. The two third supports 51 are slidably connected to two third tracks 32 respectively. A push plate 52 is fixedly connected between the two third supports 51. A D driving component 53 is fixedly connected to one side of the push plate 52. The D driving component 53 is a cylinder or a hydraulic cylinder. The piston rod of the cylinder or hydraulic cylinder is connected to one side of the middle part of the push plate 52. The D driving component 53 drives the push plate 52 to move so as to drive the third support 51 to move. The movement of the third support 51 will drive each housing 31 to move.

[0086] It should be noted that the vertical projection distance between the first and second electromagnetic rods 2 along the material conveying direction is defined as L1, the material conveying speed is V1, and the distance between the first and second planes is L2. When the electromagnetic rods 2 move, the average moving speed V2 between the first and second planes needs to meet certain conditions:

[0087]

[0088] In one embodiment of the present invention, a sensor assembly for detecting the thickness of the surface of the electromagnetic rod 2 after an object is adsorbed is also installed on one side of the U-shaped rod 44. The sensor assembly includes, but is not limited to, an infrared sensor 8. When the thickness of the surface of the electromagnetic rod 2 after an object is adsorbed reaches the boundary detected by the infrared sensor 8, the electromagnetic rod 2 will move towards the second plane. Figure 8 As shown.

[0089] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A preparation process for high-strength clay, characterized in that, Includes the following steps: S1. Raw material crushing: The kaolinite raw material is crushed, and the crushed raw material is screened to obtain the required raw material; S2. Initial iron removal: Iron is removed from the crushed iron-containing raw materials using a dry iron removal device. S3: Mixing and ball milling: Mix the raw materials according to the formula ratio and send them into a ball mill with water for ball milling to obtain a slurry; The raw materials, by weight, include: 40-60 parts kaolin, 1-5 parts high-alumina clay, 10-20 parts quartz sand, 10-20 parts white mud, 20-30 parts black mud, 5-10 parts bentonite, 50-60 parts water, and 0.5-0.8 parts grinding aid. S4: Iron removal is performed again by using a wet magnetic separator to remove iron from the slurry, resulting in clay slurry; S5: Press filtration. The clay slurry is divided into press bags and the excess water is squeezed out to obtain clay cake. S6: Vacuum kneading. The clay cake enters the vacuum chamber of the vacuum kneading machine for kneading and extrusion to obtain high-strength clay material. The dry iron removal device in S2 includes a conveying device (1) for conveying materials in a horizontal plane, and further includes: At least three electromagnetic rods (2), the central axes of each electromagnetic rod (2) are parallel to each other and parallel to the horizontal plane, the electromagnetic rods (2) can be moved to the first plane or the second plane, and the moving directions of two adjacent electromagnetic rods (2) are opposite; At least three cleaning devices (3) are located on one side of each electromagnetic rod (2), and the cleaning devices (3) can be translated on the second plane. When the electromagnetic rod (2) is located on the first plane, the electromagnetic rod (2) can be energized to generate a magnetic field to adsorb iron impurities in the conveyed material. When the electromagnetic rod (2) is located on the second plane, the cleaning device (3) moves to one side of the electromagnetic rod (2) and cleans the surface of the electromagnetic rod (2) after the electromagnetic rod (2) is de-energized and the magnetic field is turned off. The first drive mechanism (4) is used to drive the electromagnetic rod (2) to move; The second drive mechanism (5) is used to drive the cleaning device (3) to move; The conveying device (1) includes a belt conveyor (11), with frames (12) installed on both sides of the belt conveyor (11). Both ends of the electromagnetic rod (2) are fixedly connected to A rotating shafts (6). The central axis of the A rotating shafts (6) coincides with the central axis of the electromagnetic rod (2). One end of one of the A rotating shafts (6) is fixedly connected to an A driving component (7). The A driving component (7) is used to drive the electromagnetic rod (2) to rotate around the central axis of the A rotating shafts (6). The electromagnetic rod (2) that moves synchronously in the same direction is connected to the second bracket. The second bracket includes two U-shaped rods (44) and two vertical rods (45). The middle part of the two U-shaped rods (44) is fixedly connected to one end of the two vertical rods (45). The ends of the two U-shaped rods (44) are rotatably connected to the surfaces of the A-axis (6) located on the same side. The U-shaped rods (44) are slidably connected to a second track (46) on one side. The second track (46) is set in the vertical direction and is fixedly installed on one side of the frame (12). One end of each of the two vertical rods (45) is fixedly connected to a C-drive component (47) for driving the U-shaped rods (44) to move on the second track (46).

2. The preparation process of high-strength clay according to claim 1, characterized in that, A first component (48) is provided between the two vertical rods (45) located on the same side. The first component (48) includes a first gear (481) and two first racks (482). The two first racks (482) are symmetrically fixedly installed on opposite sides of the two vertical rods (45) located on the same side. The first gear (481) is meshed with the two first racks (482). One side of the first rack (482) is rotatably connected to the frame (12).

3. The preparation process of high-strength clay according to claim 2, characterized in that, A support block (49) is provided at the middle position of the vertical rod (45). One side of the support block (49) is fixedly connected to one side of the frame (12), and the inner wall of the support block (49) is slidably connected to the surface of the vertical rod (45).

4. The preparation process of high-strength clay according to claim 1, characterized in that, The cleaning device (3) includes a box (31), the extended line of the box (31) is parallel to the central axis of the electromagnetic rod (2), a third track (32) is provided on both sides of the box (31), the extended line of the third track (32) is parallel to the second plane, one side of the third track (32) is fixedly connected to one side of the frame (12), the box (31) can move along the third track (32), a screw conveyor (33) for conveying materials is provided at the bottom of the box (31), the two ends of the screw conveyor (33) are rotatably connected to the inner wall of the box (31), one side of the box (31) is provided with an opening (34) adapted to the electromagnetic rod (2), and two sides of the box (31) are provided with a bayonet (35) adapted to the A rotating shaft (6), and one side of the box (31) is connected to the second drive mechanism (5).

5. The preparation process of high-strength clay according to claim 4, characterized in that, The housing (31) is rotatably connected to a second gear (36) on one side, and a first transmission wheel is fixedly connected to one side of the second gear (36). The first transmission wheel is connected to the second transmission wheel via a transmission belt (37), and one side of the second transmission wheel is fixedly connected to one end of the auger (33).

6. The preparation process of high-strength clay according to claim 5, characterized in that, A third gear (38) is fixedly connected to one end of the A shaft (6) located on the same side as the second gear (36). A scraper (39) is fixedly installed inside the housing (31). After the A shaft (6) abuts against the bayonet (35), the second gear (36) and the third gear (38) mesh. The side of the scraper (39) abuts against the surface of the electromagnetic rod (2).

7. The preparation process of high-strength clay according to claim 4, characterized in that, The second drive mechanism (5) includes two third brackets (51), one side of which is fixedly connected to one side of each housing (31), the two third brackets (51) are slidably connected to two third tracks (32) respectively, and a push plate (52) is fixedly connected between the two third brackets (51), and a D drive component (53) is fixedly connected to one side of the push plate (52).

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