A kind of furnace copper jacket is used to protect the device of brick

Abstract

This utility model relates to the field of metallurgical equipment technology, specifically to a brick-laying protection device for a copper water jacket in a furnace. The inner side of the copper water jacket is provided with a refractory brick layer structure located within the furnace body. The refractory brick layer structure is generally stepped and includes pre-installed refractory bricks, a first refractory brick layer, and a second refractory brick layer. The pre-installed refractory bricks are arranged on the inner side of the furnace body. A second refractory brick layer and a wedge-shaped refractory brick are respectively arranged between the first refractory brick layer and two pre-installed refractory bricks. The first refractory brick layer includes multiple assembled refractory bricks, with the wedge-shaped refractory brick inserted between the bottommost assembled refractory brick and the pre-installed refractory brick. The second refractory brick layer includes multiple wedge-shaped refractory bricks, with the bottommost and topmost two wedge-shaped refractory bricks respectively fitted to the assembled refractory brick and the pre-installed refractory brick. This utility model can quickly protect the burnt area of ​​the copper water jacket by laying bricks, and the repair of the burnt area of ​​the copper water jacket is simple.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a brick protection device for copper molten metal jackets in furnaces and kilns. Background Technology

[0002] The copper water jacket of the furnace mainly reduces the heat of high-temperature parts of the furnace body through a water cooling system. The heat of high-temperature components is carried away by the cooling water circulation to avoid material deformation or failure due to overheating. During the smelting process, it protects the equipment and extends its service life. The copper water jacket conducts heat quickly to the cooling water, reducing the loss of refractory materials and preventing the furnace wall from being eroded by molten material. It also reduces thermal stress concentration through uniform cooling, avoiding cracking and water leakage, and reducing the frequency of furnace maintenance. At the same time, it also optimizes production efficiency, reduces the frequency of refractory material replacement, lowers maintenance costs, and reduces production interruptions caused by equipment failure.

[0003] In metallurgical furnaces, the copper water jacket at the furnace flue outlet is exposed to high temperature and corrosive gas environment for a long time, with temperatures usually exceeding 1200℃. Due to the scouring effect of the high-temperature flue gas, the copper water jacket at the furnace flue outlet is prone to burning, thinning, or even leakage. When the copper water jacket suffers from burning or corrosion, the existing technology usually involves repairing the copper water jacket, such as by using copper welding rods or by attaching copper plates. However, due to the large size and complex internal cooling structure of the copper water jacket, the repair is difficult and ineffective, often requiring production shutdown and replacement, which can cause huge economic losses. Summary of the Invention

[0004] This invention addresses the problem of the difficulty in repairing the burned area of ​​a copper water jacket after it has been burned by high-temperature flue gas. It provides a brick-laying protection device for copper water jackets in furnaces and kilns. This device uses refractory bricks to protect and isolate the copper water jacket from direct contact with high-temperature flue gas. It can quickly lay bricks on the outside of the burned area of ​​the copper water jacket for protection, making the repair of the burned area simple and eliminating the need for a complete shutdown of the furnace and kiln.

[0005] To achieve the above objectives, the technical solution of this utility model is: a brick-laying protection device for a copper water jacket in a furnace, comprising a furnace body and a copper water jacket connected to the furnace body. The inner side of the copper water jacket is provided with a refractory brick layer structure located within the furnace body. The refractory brick layer structure is generally stepped, comprising pre-installed refractory bricks, a first refractory brick layer, and a second refractory brick layer. The pre-installed refractory bricks are provided on the inner side of the furnace body. A second refractory brick layer and a wedge-shaped first refractory brick are respectively disposed between the first refractory brick layer and the two pre-installed refractory bricks. The refractory brick layer structure is formed by the cooperation of the pre-installed refractory bricks, the first refractory brick layer, and the second refractory brick layer. This refractory brick layer structure protects the burned area of ​​the copper water jacket, preventing direct contact between high-temperature flue gas and the copper water jacket, thus enabling the repair of the burned area.

[0006] The first refractory brick layer includes multiple assembled refractory bricks, which are arranged and fitted together in a top-to-bottom direction. The first wedge-shaped refractory brick is inserted between the bottommost assembled refractory brick and the pre-assembled refractory brick. The wedge-shaped structure of the first wedge-shaped refractory brick achieves the effect of fastening the first refractory brick layer and the second refractory brick layer.

[0007] The second refractory brick layer comprises multiple wedge-shaped refractory bricks, which are arranged and bonded together sequentially from bottom to top. The two bottommost and topmost wedge-shaped refractory bricks are bonded to the assembled refractory bricks and the pre-assembled refractory bricks, respectively. The wedge-shaped refractory bricks of the second refractory brick layer fill the space between the assembled refractory bricks and the pre-assembled refractory bricks, thereby improving the overall stability of the refractory brick layer structure.

[0008] Furthermore, a slot is provided on one side of the pre-installed refractory brick. The pre-installed refractory brick is installed in an inclined state on the inner side of the furnace body through the slot. The purpose is to facilitate the cooperation between the pre-installed refractory brick and wedge-shaped refractory brick one and wedge-shaped refractory brick two, so that the wedge-shaped refractory brick one can make the refractory brick layer structure as a whole firm and improve the overall stability of the refractory brick layer structure.

[0009] Furthermore, a number of bolts are arranged on the inner side of the copper water jacket, and through holes are opened at the positions of the bolts on the assembled refractory bricks. The assembled refractory bricks are fitted onto the bolts through the through holes. The cooperation between the bolts and the assembled refractory bricks can prevent the assembled refractory bricks from falling off due to the shaking of the furnace during the bricklaying process, and can further improve the overall stability of the refractory brick layer structure.

[0010] Furthermore, an arc-shaped groove is provided at the position of the bolt corresponding to each of the two adjacent assembled refractory bricks. The arc-shaped groove matches the bolt, and the function of the arc-shaped groove is to facilitate the assembly of the refractory brick and the bolt.

[0011] Furthermore, the space between the assembled refractory brick and the pre-assembled refractory brick at the bottom forms a wedge-shaped hole. The first wedge-shaped refractory brick is inserted into the wedge-shaped hole and is fitted to fit against the assembled refractory brick and the pre-assembled refractory brick. The wedge-shaped structure of the first wedge-shaped refractory brick achieves the fastening of the first refractory brick layer and the second refractory brick layer.

[0012] Furthermore, refractory mud layers are provided between the refractory brick layer structure and the copper water jacket, between the pre-assembled refractory bricks and the furnace body, between two adjacent wedge-shaped refractory bricks, and between two adjacent assembled refractory bricks. The thickness of the refractory mud layer between two adjacent wedge-shaped refractory bricks and between two adjacent assembled refractory bricks gradually increases from top to bottom. The purpose of this is to form a wedge-shaped hole between the lowest assembled refractory brick and the pre-assembled refractory brick after the bricklaying of the assembled refractory bricks is completed. At the same time, the refractory mud layer can prevent high-temperature flue gas from passing through the brick joints.

[0013] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a reasonable structure and good performance. It uses refractory bricks to protect and isolate high-temperature flue gas from direct contact with the copper water jacket. The protective device can be quickly built on the outside of the copper water jacket burn area to protect the copper water jacket burn area. The repair of the copper water jacket burn area is simple. At the same time, metallurgical furnaces are usually two- or three-unit furnaces. By using this protective device to protect the copper water jacket burn area, there is no need to shut down the entire furnace.

[0014] This invention utilizes a pre-installed refractory brick structure, consisting of a first refractory brick layer and a second refractory brick layer, to protect the burned area of ​​the copper water jacket. This prevents direct contact between high-temperature flue gas and the copper water jacket, thus enabling the repair of the burned area. The wedge-shaped structure of the first wedge-shaped refractory brick secures the first and second refractory brick layers. Furthermore, the two inclined pre-installed refractory bricks, in conjunction with the first and second wedge-shaped refractory bricks, ensure the overall tightness of the refractory brick layer structure, thereby improving its overall stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a brick-lined protective device for copper molten metal jackets in furnaces and kilns, according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a brick-lined protective device for copper molten metal jackets in furnaces and kilns, according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the pre-assembled refractory bricks of this utility model; Figure 4 This is a structural schematic diagram of the wedge-shaped refractory brick of this utility model; Figure 5 This is a structural schematic diagram of the wedge-shaped refractory brick of this utility model; Figure 6 This is a schematic diagram of the structure of the assembled refractory bricks of this utility model. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the assembled refractory bricks of this utility model. Figure 2 .

[0016] The attached diagram is labeled as follows: 1 is the furnace body, 2 is the copper water jacket, 3 is the bolt, 4 is the pre-installed refractory brick, 5 is the slot, 6 is the first wedge-shaped refractory brick, 7 is the second wedge-shaped refractory brick, 8 is the assembled refractory brick, 9 is the through hole, and 10 is the arc groove. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-7 As shown, a brick-lined protective device for a copper water jacket in a furnace includes a furnace body 1 and a copper water jacket 2 connected to the furnace body 1. The inner side of the copper water jacket 2 is provided with a refractory brick layer structure located inside the furnace body 1. The refractory brick layer structure is generally stepped and includes pre-installed refractory bricks 4, refractory brick layer one, and refractory brick layer two. The inner side of the furnace body 1 is provided with the pre-installed refractory bricks 4. Refractory brick layer two and wedge-shaped refractory bricks 6 are respectively provided between refractory brick layer one and the two pre-installed refractory bricks 4. In this embodiment, a refractory brick layer structure is formed by the combination of pre-installed refractory brick 4, refractory brick layer one, and refractory brick layer two. When the copper water jacket is burned, bricks are laid in the burned area of ​​the copper water jacket to form a refractory brick layer structure. The refractory brick layer structure can effectively protect the burned area of ​​the copper water jacket and prevent high-temperature flue gas from directly contacting the copper water jacket. The combination of pre-installed refractory brick 4, wedge-shaped refractory brick one 6, and refractory brick layer two can ensure the overall stability of the refractory brick layer structure. The pre-installed refractory brick 4 and wedge-shaped refractory brick one 6 are both made of high-alumina refractory material, which can directly contact high-temperature flue gas and provide high-temperature resistance and corrosion resistance.

[0018] The first refractory brick layer comprises multiple assembled refractory bricks 8, which are arranged sequentially and fitted together from bottom to top. A wedge-shaped refractory brick 6 is inserted between the lowest assembled refractory brick 8 and the pre-assembled refractory brick 4. In this embodiment, there are eight assembled refractory bricks 8, which are also made of high-alumina refractory material. The multiple assembled refractory bricks 8 are arranged in a stepped structure, with the height of the assembled refractory bricks 8 gradually increasing from bottom to top. The wedge-shaped refractory brick 6 is inserted between the assembled refractory bricks 8 and the pre-assembled refractory brick 4. The wedge-shaped structure of the wedge-shaped refractory brick 6 can securely fix the first and second refractory layers, ensuring the stability of the refractory brick layer structure.

[0019] The second refractory brick layer includes multiple wedge-shaped refractory bricks 7, which are arranged and bonded together from bottom to top. The two bottommost and topmost wedge-shaped refractory bricks 7 are bonded to the assembled refractory brick 8 and the pre-assembled refractory brick 4, respectively. In this embodiment, there are three wedge-shaped refractory bricks 7. The cross-section of each wedge-shaped refractory brick 7 is trapezoidal. The wedge-shaped refractory bricks 7 are also made of high-alumina refractory material. By filling the space between the assembled refractory brick 8 and the pre-assembled refractory brick 4 with wedge-shaped refractory bricks 7, the overall stability of the refractory brick layer structure can be improved.

[0020] A slot 5 is provided on one side of the pre-installed refractory brick 4, and the pre-installed refractory brick 4 is clamped in an inclined state on the inner side of the furnace body 1 through the slot 5. In this embodiment, the slot 5 not only facilitates the clamping of the pre-installed refractory brick 4 onto the furnace body 1, but also facilitates the fixation of the pre-installed refractory brick 4 onto the furnace body 1 in an inclined state. This makes it easier for the side of the pre-installed refractory brick 4 without the slot 5 to cooperate with the wedge-shaped refractory brick 6 and the wedge-shaped refractory brick 7, thereby facilitating the use of the wedge-shaped refractory brick 6 and the wedge-shaped refractory brick 7 to ensure the overall stability of the refractory brick layer structure.

[0021] The inner side of the copper water jacket 2 is provided with several bolts 3. Through holes 9 are provided on the refractory bricks 8 at the positions corresponding to the bolts 3. The refractory bricks 8 are fitted onto the bolts 3 through the through holes 9. In this embodiment, there are five bolts 3. Originally, there were five fixing bolts used to fix the copper water jacket 2. The fixing bolts 3 are welded to the copper water jacket 2 to extend their length, with the exposed length of the bolts 3 being 6-10 cm. Fitting the refractory bricks 8 onto the bolts 3 prevents the refractory bricks 8 from falling off during the bricklaying process due to furnace shaking, and further improves the overall stability of the refractory brick layer structure.

[0022] An arc-shaped groove 10 is provided at the position of the bolt 3 for each of the two adjacent assembled refractory bricks 8, and the arc-shaped groove 10 matches the bolt 3. In this embodiment, a total of three assembled refractory bricks 8 have arc-shaped grooves 10, which facilitate the mating of the assembled refractory bricks 8 with the bolts 3.

[0023] The space between the bottommost assembled refractory brick 8 and the pre-assembled refractory brick 4 forms a wedge-shaped hole. The wedge-shaped refractory brick 6 is inserted into the wedge-shaped hole and is fitted to fit against the assembled refractory brick 8 and the pre-assembled refractory brick 4. The wedge-shaped refractory brick 6 inserted into the wedge-shaped hole can achieve the fastening of the first refractory brick layer and the second refractory brick layer.

[0024] Refractory mud layers are provided between the refractory brick layer structure and the copper water jacket 2, between the pre-installed refractory brick 4 and the furnace body 1, between two adjacent wedge-shaped refractory bricks 7, and between two adjacent assembled refractory bricks 8. The thickness of the refractory mud layer between two adjacent wedge-shaped refractory bricks 7 and between two adjacent assembled refractory bricks 8 gradually increases from top to bottom. In this embodiment, a refractory mud layer is also arranged between the assembled refractory brick 8 and the wedge-shaped refractory brick 7. The refractory mud layer can prevent high-temperature flue gas from passing through the brick joints. The thickness of the refractory mud layer between two adjacent wedge-shaped refractory bricks 7 and between two adjacent assembled refractory bricks 8 gradually increases from top to bottom. The purpose is to form a wedge-shaped hole between the lowest assembled refractory brick 8 and the pre-installed refractory brick 4 after the assembled refractory brick 8 is installed, thereby achieving the fastening of refractory brick layer one and refractory brick layer two through the wedge-shaped structure of the wedge-shaped refractory brick 6. Refractory mud is applied to the refractory bricks of the refractory brick layer structure to form a refractory mud layer.

[0025] The working principle of this utility model is as follows: When the copper water jacket is burned, first clean the surface of the burned area of ​​the copper water jacket, remove debris, and ensure that the surface of the burned area of ​​the copper water jacket is flat; then, pre-installed refractory bricks 4 are respectively installed in the slots 5 on the inner side of the furnace body 1. Then, wedge-shaped refractory bricks 7 are arranged in a stepped manner on the inner side of the pre-installed refractory bricks 4 located at the top. Refractory mud is applied to the parts of the pre-installed refractory bricks 4 that contact the furnace body 1 and the copper water jacket 2 to form a refractory mud layer. Refractory mud is also applied to the parts of the wedge-shaped refractory bricks 7 that contact the copper water jacket 2 to form a refractory mud layer. Refractory mud is also applied between two adjacent wedge-shaped refractory bricks 7. The thickness of the applied refractory mud gradually increases from top to bottom. After the installation of the second wedge-shaped refractory brick 7 is completed, the assembly refractory brick 8 is then laid. The method of laying the assembly refractory brick 8 is the same as that of laying the second wedge-shaped refractory brick 7. In this case, a groove 5 or an arc groove 10 is made on the assembly refractory brick 8 corresponding to the bolt 3 so that the assembly refractory brick 8 matches the corresponding bolt 3. Because the thickness of the applied refractory mortar gradually increases from top to bottom, a wedge-shaped hole is formed between the bottom assembly refractory brick 8 and the pre-installed refractory brick 4. Then, the first wedge-shaped refractory brick 6 is inserted into the wedge-shaped hole. The wedge-shaped structure of the first wedge-shaped refractory brick 6 is used to fasten the first and second refractory brick layers, thus completing the protection of the copper water jacket burn area.

[0026] This protective device uses refractory bricks to form a gradient protection, with a service life of over 6 months. Compared to traditional repair methods such as copper welding rods and copper plate welding, continuous high-temperature flue gas erosion will completely damage the copper water jacket, forcing a week-long production shutdown for replacement, resulting in an estimated economic loss of 35 million yuan. The repair time for a single burned area of ​​the copper water jacket is ≤4 hours, without the need for a complete production shutdown; compared to replacing the copper water jacket, the cost per unit is lower, and it can be disassembled and reused.

[0027] The embodiments described above are merely preferred embodiments of the utility model and are not intended to limit the scope of the utility model. Therefore, all equivalent changes or modifications made to the technical solutions described in the scope of the utility model patent application should be included within the scope of the utility model patent application.

Claims

1. A brick-lined protective device for a copper water jacket in a furnace, comprising a furnace body (1) and a copper water jacket (2) connected to the furnace body (1), characterized in that, The inner side of the copper water jacket (2) is provided with a refractory brick layer structure located inside the furnace body (1). The refractory brick layer structure is generally in a stepped structure. The refractory brick layer structure includes pre-installed refractory bricks (4), refractory brick layer one and refractory brick layer two. The inner side of the furnace body (1) is provided with the pre-installed refractory bricks (4). Refractory brick layer two and wedge-shaped refractory brick one (6) are respectively provided between refractory brick layer one and the two pre-installed refractory bricks (4). The first refractory brick layer includes multiple assembled refractory bricks (8), which are arranged and attached in sequence from bottom to top. The wedge-shaped refractory brick (6) is inserted between the lowest assembled refractory brick (8) and the pre-assembled refractory brick (4). The second refractory brick layer includes multiple wedge-shaped refractory bricks (7), which are arranged and fitted together in sequence from bottom to top. The two wedge-shaped refractory bricks (7) located at the bottom and top are fitted together with the assembled refractory bricks (8) and the pre-assembled refractory bricks (4), respectively.

2. A protection device for the brickwork of a copper jacket of a furnace, according to claim 1, characterized in that, A slot (5) is provided on one side of the pre-installed refractory brick (4), and the pre-installed refractory brick (4) is installed in an inclined state on the inside of the furnace body (1) through the slot (5).

3. The brickwork protection device for molten copper in a furnace according to claim 1, characterized in that, The inner side of the copper water jacket (2) is provided with several bolts (3), and the assembly refractory brick (8) is provided with through holes (9) at the positions corresponding to the bolts (3). The assembly refractory brick (8) is sleeved on the bolts (3) through the through holes (9).

4. A protection device for the brickwork of a copper jacket of a furnace, according to claim 3, characterized in that, An arc-shaped groove (10) is provided at the position of the bolt (3) of each of the two adjacent assembled refractory bricks (8), and the arc-shaped groove (10) matches the bolt (3).

5. A protection device for the brickwork of a copper jacket of a furnace, according to claim 1, characterized in that, The space between the assembled refractory brick (8) and the pre-assembled refractory brick (4) at the bottom forms a wedge-shaped hole. The wedge-shaped refractory brick (6) is inserted into the wedge-shaped hole and fits against the assembled refractory brick (8) and the pre-assembled refractory brick (4).

6. A protection device for the brickwork of a copper jacket of a furnace, according to claim 5, characterized in that, A refractory mud layer is provided between the refractory brick layer structure and the copper water jacket (2), between the pre-installed refractory brick (4) and the furnace body (1), between two adjacent wedge-shaped refractory bricks (7) and between two adjacent assembled refractory bricks (8). The thickness of the refractory mud layer between two adjacent wedge-shaped refractory bricks (7) and between two adjacent assembled refractory bricks (8) gradually increases from top to bottom.

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