Slag box cover with refractory brick and castable mixed structure

Abstract

The utility model discloses a kind of slag box covers of refractory brick and castable mixed structure, it is related to slag box cover technical field, including steel frame, the wall body of steel frame is opened with buffer passage;The inside of steel frame is provided with brick, and the bottom of brick is opened with buffer groove;Steel frame bottom end is fixedly connected with supporting plate, supporting plate is used to support brick, and the top of steel frame is fixedly connected with reinforcing mesh cover for limiting brick;Pouring material layer is poured outside the steel frame, and pouring material layer penetrates into buffer groove inside and forms connecting part;Perforation is arranged on pouring material layer.The slag box cover of refractory brick and castable mixed structure, by setting buffer passage, buffer groove and pouring material layer and other structures, not easy to burn through, and form multiple heat expansion buffer space, reduce the influence of high temperature to slag box cover, so that different materials are not easy to separate, while reducing overall weight, convenient to take, improve the use efficiency of slag box cover.

Description

Technical Field

[0001] This utility model relates to the field of slag box cover technology, and in particular to a slag box cover with a mixed structure of refractory bricks and castable. Background Technology

[0002] A slag box cover is a rectangular cover used to seal the opening at the top of the slag box of a vertical furnace.

[0003] In the existing technology, the slag box cover is made by welding several rivets onto a rectangular steel plate, then using a special mold to frame it, and finally casting it with castable refractory to form a square slag box cover of suitable thickness. However, under the current raw material conditions, it is not durable, and the slag box cover is easily burned through by fire, and its service life cannot meet the production requirements.

[0004] Therefore, it is necessary to propose a slag box cover with a mixed structure of refractory bricks and castables to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a slag box cover with a mixed structure of refractory bricks and castables, in order to solve the problem that in the prior art, the slag box cover is made by welding several rivets onto a rectangular steel plate, then using a special mold to frame it, and finally casting it with castable to form a square slag box cover of suitable thickness. Under the current raw material conditions, the slag box cover is not durable, is easily burned through by fire, and its service life cannot meet the production requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a slag box cover with a refractory brick and castable mixed structure, including a steel frame, wherein a buffer channel is formed in the wall of the steel frame;

[0007] The steel frame is equipped with bricks inside, and a buffer groove is provided at the bottom of the bricks;

[0008] The bottom end of the steel frame is fixedly connected to a support plate, which is used to support the bricks. The top end of the steel frame is fixedly connected to a steel mesh cover for limiting the position of the bricks.

[0009] The steel frame is coated with a layer of castable refractory, which penetrates into the buffer groove to form a connection.

[0010] The castable refractory layer is provided with through holes, and the through holes penetrate the outer wall of the castable refractory layer.

[0011] Preferably, the steel frame is rectangular.

[0012] Preferably, multiple bricks are provided, and the multiple bricks fill the interior of the steel frame.

[0013] Preferably, the buffer slots are provided in multiple ways and are evenly distributed.

[0014] Preferably, multiple through holes are provided, and the multiple through holes are evenly distributed along the length direction of the castable layer.

[0015] Preferably, the through hole is located below the steel frame.

[0016] Preferably, the top of the steel frame is fixedly connected to an upper rivet rod, and the top end of the upper rivet rod is fixedly connected to a rivet hook. Both the upper rivet rod and the rivet hook are embedded inside the castable layer.

[0017] Preferably, the bottom of the steel frame is fixedly connected to a lower rivet rod, and the bottom end of the lower rivet rod penetrates through the castable layer and extends to the outside of the castable layer.

[0018] The technical effects and advantages of this utility model are as follows:

[0019] 1. This utility model, by setting up a buffer channel, buffer trough and castable layer, is not easy to burn through, and forms multiple buffer spaces for thermal expansion, reducing the impact of high temperature on the slag box cover, making it difficult for different materials to separate, while reducing the overall weight, making it easy to handle, and improving the efficiency of the slag box cover.

[0020] 2. By setting up structures such as steel frames, brick bodies, and castable layers, the overall weight is reduced, manufacturing costs are saved, and high-temperature resistance is improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the slag box cover structure of the present invention, which is a mixture of refractory bricks and castables.

[0022] Figure 2 This is a schematic diagram of the steel frame and brick structure of this utility model.

[0023] Figure 3 This is a schematic diagram of the casting refractory layer and through-hole structure of this utility model.

[0024] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0025] Figure 5 This is a schematic diagram of the steel frame and pallet structure of this utility model.

[0026] In the diagram: 1. Steel frame; 2. Support plate; 3. Brick body; 4. Upper rivet rod; 5. Rivet hook; 6. Buffer channel; 7. Reinforcing mesh cover; 8. Buffer groove; 9. Lower rivet rod; 10. Castable layer; 11. Through hole; 12. Connection part. Detailed Implementation

[0027] This utility model provides, for example Figures 1-5The slag box cover shown is a refractory brick and castable mixed structure. Considering that the existing slag box covers are usually made by welding several connecting structures onto a rectangular steel plate, then using a special mold to frame it, and finally casting it with castable to form a square cover of suitable thickness, but this is not durable under current raw material conditions and the cover is easily burned through by fire. In order to ensure the efficiency of the slag box cover, the slag box cover of this utility model includes a steel frame 1. The steel frame 1 is rectangular, which reduces the overall weight and saves manufacturing costs compared to the rectangular steel plate structure.

[0028] The interior of the steel frame 1 is equipped with bricks 3, which are made of refractory bricks. There are multiple bricks 3, and the interior of the steel frame 1 is filled with multiple bricks 3 to form a highly efficient heat insulation layer, which improves the high temperature resistance and makes it less likely to burn through.

[0029] A support plate 2 is fixedly connected to the bottom of the steel frame 1, which supports the brick 3. A steel mesh cover 7 is fixedly connected to the top of the steel frame 1 to limit the position of the brick 3. The support plate 2 and the steel mesh cover 7 fix the position of the brick 3 and prevent it from shaking.

[0030] A special mold is used to frame the steel frame 1, and a castable layer 10 is poured on the outside of the steel frame 1. Low-cement corundum-mullite-andalusite composite castable can be used, but is not limited to. It is resistant to high temperature and does not easily expand, thus ensuring the high temperature resistance of the slag box cover.

[0031] To improve the connection strength between the steel frame 1 and the castable layer 10, before the castable layer 10 is poured, an upper rivet 4 is welded to the top of the steel frame 1, and a rivet hook 5 is welded to the top of the upper rivet 4. After the castable layer 10 is poured, the upper rivet 4 and the rivet hook 5 are embedded in the interior of the castable layer 10, so that the steel frame 1 and the castable layer 10 form an integral whole, ensuring the strength of the slag box cover.

[0032] Meanwhile, before the casting of the refractory layer 10, a lower rivet 9 is welded to the bottom of the steel frame 1. The bottom end of the lower rivet 9 penetrates the casting of the refractory layer 10 and extends to the outside of the casting of the refractory layer 10, further improving the connection strength between the steel frame 1 and the casting of the refractory layer 10. At the same time, the part extending to the outside of the casting of the refractory layer 10 serves as a limiting structure when the slag box cover is connected to the vertical furnace slag box. The part extending to the outside of the casting of the refractory layer 10 extends into the opening of the vertical furnace slag box and cooperates with the top of the vertical furnace slag box, so that the slag box cover will not move arbitrarily.

[0033] By setting up a structure including a steel frame 1, a brick body 3, and a castable layer 10, the overall weight is reduced, manufacturing costs are saved, and high-temperature resistance is improved.

[0034] Considering that the slag box cover will be affected by high temperature when it is connected to the vertical furnace slag box, and that the expansion coefficients of the steel frame 1, brick body 3 and castable layer 10 are different, in order to improve the efficiency of the slag box cover, a buffer channel 6 is provided in the wall of the steel frame 1. The buffer channel 6 serves as a buffer space for the thermal expansion of the steel frame 1, making it difficult for the steel frame 1 to expand outward.

[0035] Since the bottom of the brick body 3 is closer to the vertical slag box than its top, it is easily affected by high temperature. A buffer groove 8 is provided at the bottom of the brick body 3 to serve as a buffer space for the thermal expansion of the bottom of the brick body 3. Multiple buffer grooves 8 are provided and are evenly distributed.

[0036] When the castable layer 10 is poured, the castable layer 10 seeps into the edge of the bottom opening of the buffer groove 8, but does not fill the buffer groove 8. After drying, it forms a connection part 12, which improves the connection strength between the castable layer 10 and the brick body 3.

[0037] For example, during pouring, heat-resistant foam strips can be placed in the buffer trough 8 to act as a barrier and ensure that the pouring material layer 10 does not fill the buffer trough 8.

[0038] Through holes 11 are provided on the castable refractory layer 10, and the through holes 11 penetrate the outer wall of the castable refractory layer 10. The through holes 11 are located below the steel frame 1. Multiple through holes 11 are provided, and the multiple through holes 11 are evenly distributed along the length direction of the castable refractory layer 10. Since the bottom end of the castable refractory layer 10 is closer to the vertical slag box than its top end, the through holes 11 are provided to serve as a buffer space for the thermal expansion of the bottom end of the castable refractory layer 10.

[0039] This utility model, through the setting of buffer channels 6, buffer grooves 8 and castable layers 10, is not easy to burn through and forms multiple buffer spaces for thermal expansion, reducing the impact of high temperature on the slag box cover, making it difficult for different materials to separate, while reducing the overall weight, making it easy to handle, and improving the efficiency of the slag box cover.

Claims

1. A slag box cover with a refractory brick and castable mixed structure, comprising a steel frame (1), characterized in that: The steel frame (1) has a buffer channel (6) inside its wall; The steel frame (1) is provided with bricks (3) inside, and a buffer groove (8) is provided at the bottom of the bricks (3); The bottom end of the steel frame (1) is fixedly connected to a support plate (2), which is used to support the brick (3). The top end of the steel frame (1) is fixedly connected to a steel mesh cover (7) for limiting the position of the brick (3). The steel frame (1) is coated with a layer of castable refractory (10), and the castable refractory (10) penetrates into the buffer groove (8) to form a connection part (12); The casting refractory layer (10) is provided with a through hole (11), and the through hole (11) penetrates the outer wall of the casting refractory layer (10).

2. The slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: The steel frame (1) is rectangular.

3. The slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: Multiple bricks (3) are provided, and the multiple bricks (3) fill the interior of the steel frame (1).

4. The slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: The buffer slots (8) are provided in multiple ways and are evenly distributed.

5. A slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: Multiple through holes (11) are provided, and the multiple through holes (11) are evenly distributed along the length direction of the casting material layer (10).

6. A slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: The through hole (11) is located below the steel frame (1).

7. A slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: The top of the steel frame (1) is fixedly connected to an upper rivet rod (4), and the top end of the upper rivet rod (4) is fixedly connected to a rivet hook (5). Both the upper rivet rod (4) and the rivet hook (5) are embedded inside the castable layer (10).

8. A slag box cover with a refractory brick and castable mixed structure according to claim 1, characterized in that: The bottom of the steel frame (1) is fixedly connected to a lower rivet rod (9), and the bottom end of the lower rivet rod (9) penetrates through the castable layer (10) and extends to the outside of the castable layer (10).

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