Ultrafine composite ceramic wear-resistant lining plate and preparation method thereof

Abstract

This invention relates to the field of ceramic products and includes a liner body, a sealing head, and a fastening bolt. The liner body has a central hole, one end of which passes through the central hole, and the other end of which is sealed inside the central hole by the sealing head. This invention is highly practical, convenient to construct and assemble, and solves the problem of existing liners easily falling off after construction. At the same time, the use of finer ceramic powder results in a higher bulk density, which greatly improves the wear resistance and extends the service life of the project after construction.

Description

Technical Field

[0001] This invention relates to the field of ceramic products, and in particular to ultra-micro composite ceramic wear-resistant liners and their preparation methods. Background Technology

[0002] As is well known, wear-resistant liners with ceramic components are required in blast furnace water-flushing slag systems and wear-resistant layers of ore bins. These liners are easily detached under the impact of high-pressure liquids, affecting the entire production process. The resulting defects are difficult to maintain, and once detachment occurs, it is devastating to the overall wear-resistant liner layer. Furthermore, existing wear-resistant liners on the market have limited specifications, and their composition results in low bulk density, leading to insufficient wear resistance, short service life, and failure to meet current production requirements. Therefore, we propose an ultra-micro composite ceramic wear-resistant liner and its preparation method. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention discloses an ultra-micro composite ceramic wear-resistant liner and its preparation method. The present invention uses a liner body made of ceramic components, sets fastening bolts on the liner body, and then seals it with a sealing head to achieve the purpose of preventing detachment and wear resistance.

[0004] To achieve the aforementioned objective, the present invention employs the following technical solution: The ultra-micro composite ceramic wear-resistant liner includes a liner body, a plug head, and a fastening bolt. The liner body has a central hole. One end of the fastening bolt passes through the central hole, and the other end of the fastening bolt is sealed in the central hole of the liner body by the plug head.

[0005] The liner body has a rectangular structure, and the liner body has at least one central hole, which is distributed on the liner body.

[0006] The sealing head of the liner body has a ceramic wear-resistant side, and the bottom surface of the liner body is the construction bonding surface. The bonding surface has a groove, which facilitates better bonding of the liner body during construction.

[0007] The central hole consists of an upper hole body, a lower hole body, and a limiting ring. The limiting ring is provided between the upper hole body and the lower hole body. The diameter of the upper hole body is larger than that of the lower hole body. The upper hole body is located on the side of the liner body near the ceramic wear-resistant surface, and the lower hole body is located on the side of the liner body near the construction bonding surface.

[0008] The inner wall of the upper hole is provided with a sealing groove, which is embedded through the inner wall of the upper hole. The sealing groove has a Z-shaped structure, with the upper and lower horizontal grooves of the Z-shape being parallel to each other. Both horizontal grooves are perpendicular to the ceramic wear-resistant surface of the liner. A connecting groove perpendicular to the two horizontal grooves is provided between the upper and lower horizontal grooves of the sealing groove. The connecting groove is parallel to the ceramic wear-resistant surface, and the length of the connecting groove is the same as the horizontal groove on the side closest to the lower hole.

[0009] The limiting ring is a hollow structure in the shape of an inverted frustum. The upper and lower diameters of the limiting ring are equal to those of the upper and lower bores, respectively. The upper bore, lower bore, and limiting ring are coaxial.

[0010] The fastening bolt consists of a screw head, a screw rod, a sleeve, and a fastening head. The screw head is provided with a screw rod, and a sleeve is fitted on the screw rod. The screw rod is inserted into the sleeve and connected to the fastening head inside one end of the sleeve.

[0011] The screw head has a screw fastening groove on its end face. The screw head is fastened to the bolt by inserting a screwdriver into the screw fastening hole. The screw head and the screw rod are an integral structure. The end face of the screw head and the screw rod are coaxial. The screw rod has an external thread. The screw rod is threaded to the internal thread of the fastening head through the external thread.

[0012] The sleeve has a cylindrical structure, and one end of the sleeve is provided with at least one first expansion hole. The length of the sleeve is less than the length of the screw. When the screw is screwed and rotated, the end of the sleeve with the first expansion hole is supported by the fastening head, thereby achieving the fastening effect.

[0013] The fastening head is composed of a ring body, which is a hollow frustum-shaped structure. The inner wall of the ring body is provided with internal threads. One end of the ring body is threaded to the screw. The diameter of the hole in the threaded section between the ring body and the screw is smaller than the diameter of the sleeve. The ring body is provided with at least one second expansion hole.

[0014] The plugging head is used to block the central hole. The plugging head consists of a plugging block, a locking block, and a connector. The plugging block has a cylindrical structure and a locking block is provided on the outer side of the plugging block. The locking block is inserted into the plugging groove of the upper hole body, moves downward, and rotates. After rotating, it is inserted again to block the central hole. The connector has a frustum-shaped structure and is an integral structure with the plugging block.

[0015] The preparation method of the ultra-micro composite ceramic wear-resistant liner plate involves the following components: calcined alumina powder, which is ground to a D50 of 1.8 μm, and after extending the grinding time to 10-15 hours, it is pressed into shape and then fired in a kiln at a high temperature of 1400℃.

[0016] The ultra-micro composite ceramic wear-resistant liner and its preparation method described in this invention include a liner body, a sealing head, and fastening bolts. The liner body is made of ceramic components, and fastening bolts are installed on the liner body. The sealing head is then used to seal the liner, achieving the purpose of preventing detachment and improving wear resistance. This invention is highly practical, very convenient to construct and assemble, and solves the problem of existing liners easily detaching after construction. Furthermore, the use of finer-mesh ceramic powder results in a higher bulk density, greatly improving wear resistance and extending the service life of the project after construction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the closed-state three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the box lid of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the first groove of the present invention; Figure 4 This is a three-dimensional structural diagram of the sealing pull tab of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 6 This is a schematic diagram of the bottom assembly structure of the box body of the present invention; In the diagram: 1. Liner plate; 2. Plug head; 3. Central hole; 4. Plug groove; 5. Groove; 6. Fastening bolt; 7. Upper hole body; 8. Lower hole body; 9. Limiting ring; 10. Screw head; 11. Screw; 12. External thread; 13. Sleeve; 14. First expansion hole; 15. Fastening head; 16. Internal thread; 17. Second expansion hole; 18. Ring body; 19. Plug block; 20. Locking block; 21. Connector. Detailed Implementation

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Combined with appendix Figures 1-6 The ultra-micro composite ceramic wear-resistant liner and its preparation method include a liner body 1, a plugging head 2 and a fastening bolt 6. The liner body 1 has a central hole 3. One end of the fastening bolt 6 passes through the central hole 3, and the other end of the fastening bolt 6 is sealed in the central hole 3 on the liner body 1 by the plugging head 2.

[0020] The liner body 1 has a rectangular structure, and the liner body 1 has at least one central hole 3, which is distributed on the liner body 1.

[0021] The sealing head 2 of the liner body 1 has a ceramic wear-resistant side, and the bottom surface of the liner body 1 is the construction bonding surface. The bonding surface is provided with a groove 5, which facilitates better bonding of the liner body 1 during construction.

[0022] The central hole 3 is composed of an upper hole body 7, a lower hole body 8 and a limiting ring 9. The limiting ring 9 is provided between the upper hole body 7 and the lower hole body 8. The hole diameter of the upper hole body 8 is larger than that of the lower hole body 9. The upper hole body 8 is located on the side of the liner body 1 close to the ceramic wear-resistant surface, and the lower hole body 8 is located on the side of the liner body 1 close to the construction bonding surface.

[0023] The inner wall of the upper hole body 7 is provided with a sealing groove 4, which is embedded through the inner wall of the upper hole body 7. The sealing groove 4 has a Z-shaped structure. The upper and lower horizontal grooves of the Z-shape of the sealing groove 4 are parallel to each other, and both horizontal grooves are perpendicular to the ceramic wear-resistant surface of the liner body 1. A connecting groove perpendicular to the two horizontal grooves is provided between the upper and lower horizontal grooves of the sealing groove 4. The connecting groove is parallel to the ceramic wear-resistant surface, and the length of the connecting groove is the same as the horizontal groove on the side closest to the lower hole body 8.

[0024] The limiting ring 9 is a hollow structure in the shape of an inverted frustum. The upper and lower diameters of the limiting ring 9 are equal to those of the upper hole 7 and the lower hole 8, respectively. The upper hole 7, the lower hole 8 and the limiting ring 9 are coaxial.

[0025] The fastening bolt 6 consists of a screw head 10, a screw rod 11, a sleeve 13, and a fastening head 15. The screw head 10 is provided with a screw rod 11, and a sleeve 13 is fitted on the screw rod 11. The screw rod 11 is inserted into the sleeve 13 and connected to the fastening head 15 inside one end of the sleeve 13.

[0026] The screw head 10 has a screw fastening groove on its end face. The screw head 10 is used to fasten the bolt by inserting a screwdriver into the screw fastening hole. The screw head 10 and the screw rod 11 are an integral structure. The end face of the screw head 10 and the screw rod 11 are coaxial. The screw rod 11 is provided with an external thread 12. The screw rod 11 is threaded with the internal thread 16 of the fastening head 15 through the external thread 12.

[0027] The sleeve 13 has a cylindrical structure. One end of the sleeve 13 is provided with at least one first expansion hole 14. The length of the sleeve 13 is less than the length of the screw 11. When the screw 11 is screwed and rotated with the fastening head 15, the end of the sleeve 13 with the first expansion hole 14 is supported by the fastening head 15, thereby achieving a fastening effect.

[0028] The fastening head 15 is composed of a ring body 18, which is a hollow frustum-shaped structure. The inner wall of the ring body 18 is provided with an internal thread 16. One end of the ring body 18 is threaded to the screw 11. The diameter of the hole in the threaded section between the ring body 18 and the screw 11 is smaller than the diameter of the sleeve 13. The ring body 18 is provided with at least one second expansion hole 17.

[0029] The sealing head 2 is used to seal the central hole 3. The sealing head 2 consists of a blocking block 19, a locking block 20, and a connecting head 21. The blocking block 19 has a cylindrical structure. The locking block 20 is provided on the outer side of the blocking block 19. The locking block 20 is inserted into the sealing groove of the upper hole body 7, moves downward, and rotates. After rotating, it is inserted again to seal the central hole 3. The connecting head 21 has a frustum-shaped structure and is an integral structure with the blocking block 19.

[0030] The preparation method of the ultra-micro composite ceramic wear-resistant liner plate, wherein the composition of the liner plate body is as follows: the ceramic powder is ground to 1500 mesh to 4000 mesh, the grinding time is 10-15 hours, and then pressed into shape.

[0031] Example 1: In the process of using the aforementioned ultra-micro composite ceramic wear-resistant liner and its preparation method, after leveling the tank, holes are drilled where the liner needs to be attached. Ceramic adhesive is then applied around the holes. The liner body 1 is then attached after aligning the central hole 3 with the central axis of the drilled holes. After attachment, the fastening bolt 6 is inserted through the central hole 3 into the hole in the wall. The bolt head 10 is then tightened with a screwdriver to re-fix the liner body 1. After the bolt head 10 is tightened, the liner body 1 is placed... At the limiting ring 9, the liner body 1 can be fixed. After the fixing is completed, the sealing head 2 is inserted into the liner body 1 through the sealing groove 4 on the inner wall of the central hole 3. Then, the sealing head 2 is rotated according to the groove direction of the sealing groove 4 so that the sealing head 2 can seal the central hole 3. Then, the ceramic adhesive is used to seal the groove of the sealing groove 4. The main components of the ceramic adhesive are 55-65 parts by weight of epoxy resin, 15-30 parts of ceramic fine powder and 10-20 parts of chemical auxiliaries.

[0032] Example 2, in conjunction with Appendix Figure 4 and 5 The aforementioned ultra-micro composite ceramic wear-resistant liner and its preparation method, the fastening bolt 6 of the present invention is specially made, which is different from the structure of other expansion bolts. Conventional expansion bolts are subjected to outward force, while the fastening bolt 6 of the present invention is subjected to inward force. Therefore, the structure is different from the existing fastening bolts. The fastening head 15 is inserted between the sleeve 13 and the screw 11. In this way, when the screw 11 rotates inward, it will expand through the fastening head 15 and push the sleeve 13 up, thereby achieving the function of fastening the liner body 1.

[0033] Example 3, in conjunction with the appendix Figure 3 and 6 In order to better prevent the liner body 1 from falling off, the aforementioned ultra-micro composite ceramic wear-resistant liner and its preparation method use a sealing head 2 to seal the fastening bolt 6 in the central hole 3 of the liner body 1. This can prevent high-temperature and highly corrosive liquids from corroding the fastening bolt 6. The sealing groove 4 adopts a Z-shaped structure, so that during assembly, the sealing head 4 can be completely sealed in the central hole 3 through the structure of the sealing groove 4 first, and then the edge seam is sealed with ceramic adhesive. This is not only aesthetically pleasing but also more secure, increasing the service life of the entire project.

[0034] The parts of this invention not described in detail are prior art. Although the invention has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of the invention. However, those skilled in the art should understand that various changes in form and detail can be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the invention.

Claims

1. An ultra-micro composite ceramic wear-resistant liner, comprising a liner body, a sealing head, and fastening bolts, characterized in that: The liner body has a central hole, one end of the fastening bolt passes through the central hole, and the other end of the fastening bolt is sealed in the central hole of the liner body by a sealing head.

2. The ultra-micro composite ceramic wear-resistant liner according to claim 1, characterized in that: The liner body has a rectangular structure, and the liner body has at least one central hole, which is distributed on the liner body.

3. The ultra-micro composite ceramic wear-resistant liner according to claim 2, characterized in that: The sealing head of the liner body has a ceramic wear-resistant side, and the bottom surface of the liner body is the construction bonding surface. The bonding surface has a groove, which facilitates better bonding of the liner body during construction.

4. The ultra-micro composite ceramic wear-resistant liner according to any one of claims 1-3, characterized in that: The central hole consists of an upper hole body, a lower hole body, and a limiting ring. The limiting ring is provided between the upper hole body and the lower hole body. The diameter of the upper hole body is larger than that of the lower hole body. The upper hole body is located on the side of the liner body near the ceramic wear-resistant surface, and the lower hole body is located on the side of the liner body near the construction bonding surface.

5. The ultra-micro composite ceramic wear-resistant liner according to claim 4, characterized in that: The inner wall of the upper hole is provided with a sealing groove, which is embedded through the inner wall of the upper hole. The sealing groove has a Z-shaped structure, with the upper and lower horizontal grooves of the Z-shape being parallel to each other. Both horizontal grooves are perpendicular to the ceramic wear-resistant surface of the liner. A connecting groove perpendicular to the two horizontal grooves is provided between the upper and lower horizontal grooves of the sealing groove. The connecting groove is parallel to the ceramic wear-resistant surface, and the length of the connecting groove is the same as the horizontal groove on the side closest to the lower hole.

6. The ultra-micro composite ceramic wear-resistant liner according to claim 5, characterized in that: The limiting ring is a hollow structure in the shape of an inverted frustum. The upper and lower diameters of the limiting ring are equal to those of the upper and lower bores, respectively. The upper bore, lower bore, and limiting ring are coaxial.

7. The ultra-micro composite ceramic wear-resistant liner according to claim 1, characterized in that: The fastening bolt consists of a screw head, a screw rod, a sleeve, and a fastening head. The screw head has a screw rod, and a sleeve is fitted onto the screw rod. The screw rod is inserted into the sleeve and connected to the fastening head at one end of the sleeve. The end face of the screw head has a screw fastening groove. The screw head is tightened by inserting a screwdriver into the screw fastening hole. The screw head and the screw rod are an integral structure, and the end face of the screw head and the screw rod are coaxial. The screw rod has an external thread, which is threaded to the internal thread of the fastening head. The sleeve is a cylindrical structure, and one end of the sleeve has at least one first expansion hole. The length of the sleeve is less than the length of the screw rod. When the screw rod is threaded and rotated, the end of the sleeve with the first expansion hole is supported by the fastening head, thereby achieving the fastening effect.

8. The ultra-micro composite ceramic wear-resistant liner according to claim 7, characterized in that: The fastening head is composed of a ring body, which is a hollow frustum-shaped structure. The inner wall of the ring body is provided with internal threads. One end of the ring body is threaded to the screw. The diameter of the hole in the threaded section between the ring body and the screw is smaller than the diameter of the sleeve. The ring body is provided with at least one second expansion hole.

9. The ultra-micro composite ceramic wear-resistant liner according to claim 1, characterized in that: The plugging head is used to block the central hole. The plugging head consists of a plugging block, a locking block, and a connector. The plugging block has a cylindrical structure and a locking block is provided on the outer side of the plugging block. The locking block is inserted into the plugging groove of the upper hole body, moves downward, and rotates. After rotating, it is inserted again to block the central hole. The connector has a frustum-shaped structure and is an integral structure with the plugging block.

10. The method for preparing the ultrafine composite ceramic wear-resistant liner according to claim 1, characterized in that: The liner body is composed of calcined ceramic alumina powder, which is ground to D50=1.8um, and the grinding time is extended to 10-15 hours before being pressed into shape and fired in a kiln at a high temperature of 1400℃.

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