A porous honeycomb structure ladle brick

Abstract

The utility model provides a kind of porous honeycomb structure ladle brick, including brick body, the hot face and cold face of opposite position are equipped in the brick body, the main hole passage of several through hot face and cold face is equipped in the brick body, the main hole passage section is hexagon, the main hole passage is equipped with flared mouth near hot face one end, the flared mouth big opening is connected main hole passage, the flared mouth small opening is located on hot face, the width of big opening is greater than the width of small opening, the inner wall of main hole passage is equipped with several staggered arrangement's orifice, the orifice on the inner wall of adjacent main hole passage is connected and forms secondary hole passage.The utility model passes through multistage honeycomb structure, consumes huge thermal stress, prevents its collection into destructive big crack, increases service life.

Description

Technical Field

[0001] This utility model relates to the field of refractory and heat-insulating materials technology, and in particular to a porous honeycomb structure steel-clad brick. Background Technology

[0002] Steel ladle bricks are widely used in the linings of coke ovens, hot blast stoves, and glass kilns due to their high refractoriness and strength. The frequent loading, pouring, and cooling processes of the steel ladle cause drastic temperature changes, generating enormous thermal stress and leading to damage to the refractory material. Summary of the Invention

[0003] To address the above problems, this utility model provides a porous honeycomb structure steel-clad brick.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a porous honeycomb structure steel-clad brick, comprising a brick body, wherein the brick body has a hot surface and a cold surface positioned opposite each other, the brick body has a plurality of main channels penetrating the hot surface and the cold surface, the cross-section of the main channel is hexagonal, the end of the main channel near the hot surface is provided with a flared opening, the large opening of the flared opening is connected to the main channel, the small opening of the flared opening is located on the hot surface, the width of the large opening is greater than the width of the small opening, the inner wall of the main channel is provided with a plurality of staggered orifices, and the orifices on the inner wall of adjacent main channels are connected to form secondary channels.

[0005] Preferably, the main channels are arranged in a honeycomb pattern, the width of the main channels is equal to the width of the large opening of the flared mouth, and the height of the main channels is greater than the height of the flared mouth.

[0006] Preferably, the flared opening is a hexagonal platform.

[0007] Preferably, the number of openings on adjacent inner walls within the main channel is the same but their positions are staggered, and the openings connect to the openings of adjacent main channels located above or below, and the secondary channels are upward or downward.

[0008] Preferably, the inner wall of the outermost main channel is not provided with an opening, and the width of the opening is less than the width of one side of the horizontal cross-section of the main channel.

[0009] Preferably, the brick body has at least one mounting groove on two adjacent side walls, and the other two adjacent side walls have the same number of mounting strips as the mounting grooves.

[0010] Preferably, the mounting groove is connected end-to-end with the mounting strip.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: Through a multi-level honeycomb structure, microcracks deflect and branch when they encounter secondary channels during propagation, consuming energy and preventing them from coalescing into destructive large cracks. This improves the fracture toughness of the material, transforming it from brittle fracture to a safer non-failure mode and extending its service life. The secondary channels form an anti-permeability labyrinth, increasing the resistance and difficulty of molten slag penetration downwards. The flared opening effectively captures the initial slag and promotes the formation of a stable slag film with a certain viscosity at the opening. This slag film greatly slows down the subsequent erosion and penetration of the refractory material by the molten slag. The secondary channels, in conjunction with the flared opening, reduce the amount and force of molten slag intrusion from the source. The secondary channels prevent heat flow from propagating in a straight line, forcing it to detour. The multi-level honeycomb structure greatly extends the heat flow path and utilizes the high thermal resistance of still air to significantly reduce the temperature of the ladle shell, reducing heat loss and effectively improving the insulation effect. Attached Figure Description

[0012] Figure 1 This is a top view of the porous honeycomb structure steel-clad brick of this utility model.

[0013] Figure 2 This is a bottom view of the porous honeycomb structure steel-clad brick of this utility model.

[0014] Figure 3 This is a cross-sectional view (AA) of the porous honeycomb structure steel-clad brick of this utility model.

[0015] Figure 4 This is a BB cross-sectional view of the porous honeycomb structure steel-clad brick of this utility model.

[0016] Figure 5 This is a cross-sectional view of the secondary channels of the porous honeycomb structure steel-clad brick of this utility model.

[0017] Attached diagram descriptions: 1. Brick body, 2. Mounting groove, 3. Mounting strip, 4. Main channel, 5. Bell mouth, 51. Small opening, 52. Large opening, 6. Secondary channel, 61. Orifice, 7. Hot surface, 8. Cold surface. Detailed Implementation

[0018] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0019] Please refer to the reference. Figures 1-5A porous honeycomb structure steel-clad brick according to an embodiment of the present invention includes a brick body 1. The brick body 1 has a hot surface 7 and a cold surface 8 positioned opposite each other. The brick body 1 has a plurality of main channels 4 penetrating the hot surface 7 and the cold surface 8. The main channel 4 has a hexagonal cross section. The main channel 4 has a flared mouth 5 near the hot surface 7. The large opening 52 of the flared mouth 5 is connected to the main channel 4. The small opening 51 of the flared mouth 5 is located on the hot surface 7. The width of the large opening 52 is greater than the width of the small opening 51. The inner wall of the main channel 4 has a plurality of staggered openings 61. The openings 61 on the inner wall of adjacent main channels 4 are connected to form secondary channels 6.

[0020] The main channel 4 is used for penetration and support, achieving structural lightweighting and reducing the overall weight of the ladle. When microcracks encounter the secondary channel 6 during propagation, they will deflect and bifurcate, consuming energy and preventing them from merging into destructive large cracks, thus improving the fracture toughness of the material and transforming it from brittle fracture to a safer non-failure mode. The multi-level honeycomb structure greatly extends the heat flow path and utilizes the high thermal resistance of still air to significantly reduce the temperature of the ladle shell and reduce heat loss. The bell mouth 5 effectively captures the initial slag and promotes the formation of a stable slag film with a certain viscosity at the orifice. The slag film greatly slows down the erosion and penetration of the refractory material body by the subsequent molten slag. The small opening 51 is located on the hot surface 7, and the small orifice effectively reduces the contact area between molten steel and slag and the initial penetration entrance.

[0021] In one embodiment, such as Figure 1 and Figure 3 As shown, the main channel 4 is arranged in a honeycomb pattern. The width of the main channel 4 is equal to the width of the large opening 52 of the flared mouth 5, and the height of the main channel 4 is greater than the height of the flared mouth 5. The large opening of the cold surface 8 and the large width of the main channel 4 form a larger static air chamber, which greatly enhances the heat insulation effect.

[0022] In one embodiment, such as Figure 1 and Figure 4 As shown, the flared opening 5 is a hexagonal platform, which facilitates a smooth connection with the main channel 4.

[0023] In one embodiment, such as Figure 3 , Figure 4 and Figure 5 As shown, the number of orifices 61 on the adjacent inner walls of the main channel 4 is the same but their positions are staggered. The orifices 61 are connected to the orifices 61 of the adjacent main channels 4 located above or below. The secondary channels 6 are upward or downward. The secondary channels 6 form an anti-permeability labyrinth, which increases the path resistance and difficulty of the molten slag penetrating downward. The secondary channels 6 prevent the heat flow from propagating in a straight line and require it to detour, effectively improving the heat insulation effect.

[0024] In one embodiment, such as Figure 5As shown, the inner wall of the outermost main channel 4 does not have an opening 61, so that the thermal stress is guided to the more resilient area inside for dissipation, avoiding stress concentration at the weak corners. The width of the opening 61 is less than the width of one side of the horizontal section of the main channel 4, so as to avoid the opening 61 being too large, resulting in too much hollowing and reducing the strength of the brick 1.

[0025] In one embodiment, such as Figure 1 , Figure 3 and Figure 5 As shown, at least one mounting groove 2 is provided on two adjacent side walls of the brick body 1, and the same number of mounting strips 3 as the mounting grooves 2 are provided on the other two adjacent side walls, which facilitates installation and fixation, makes the bricks tightly connected, reduces gaps, and slows down the lateral penetration rate of molten slag and steel into the interior of the brick body 1.

[0026] In one embodiment, such as Figure 2 and Figure 5 As shown, the mounting groove 2 and the mounting strip 3 are connected end to end to avoid excess parts causing inconvenience in splicing the bricks 1.

[0027] Usage: Combine Figures 1-5 As shown, the main channel 4 is used for penetration and support, realizing the lightweighting of the structure and reducing the overall weight of the ladle. The bell mouth 5 effectively captures the initial slag and promotes the formation of a stable slag film with a certain viscosity at the mouth. The slag film greatly slows down the erosion and penetration of the refractory material body by the subsequent molten slag. When microcracks encounter the secondary channel 6 during propagation, they will be deflected and bifurcated, consuming energy and preventing them from merging into destructive large cracks, thus improving the fracture toughness of the material and changing from brittle fracture to a safer non-failure mode. The multi-level honeycomb structure greatly extends the heat flow path and utilizes the high thermal resistance of still air to significantly reduce the temperature of the ladle shell and reduce heat loss.

[0028] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A porous honeycomb structure steel-clad brick, characterized in that: The system includes a brick body (1), which has a hot surface (7) and a cold surface (8) positioned opposite each other. The brick body (1) has a number of main channels (4) that penetrate the hot surface (7) and the cold surface (8). The main channel (4) has a hexagonal cross section. The main channel (4) has a flared mouth (5) at one end near the hot surface (7). The large opening (52) of the flared mouth (5) connects to the main channel (4). The small opening (51) of the flared mouth (5) is located on the hot surface (7). The width of the large opening (52) is greater than the width of the small opening (51). The inner wall of the main channel (4) has a number of staggered openings (61). The openings (61) on the inner walls of adjacent main channels (4) connect to form secondary channels (6).

2. The porous honeycomb structure steel-clad brick as described in claim 1, characterized in that: The main channel (4) is arranged in a honeycomb pattern. The width of the main channel (4) is equal to the width of the large opening (52) of the flared mouth (5). The height of the main channel (4) is greater than the height of the flared mouth (5).

3. The porous honeycomb structure steel-clad brick as described in claim 1, characterized in that: The flared mouth (5) is a hexagonal platform.

4. The porous honeycomb structure steel-clad brick as described in claim 1, characterized in that: The number of orifices (61) on the adjacent inner walls of the main channel (4) is the same but their positions are staggered. The orifices (61) are connected to the orifices (61) of the adjacent main channel (4) located above or below. The secondary channel (6) is upward or downward.

5. The porous honeycomb structure steel-clad brick as described in claim 1, characterized in that: The inner wall of the outermost main channel (4) is not provided with an opening (61), and the width of the opening (61) is less than the width of one side of the horizontal section of the main channel (4).

6. The porous honeycomb structure steel-clad brick as described in claim 1, characterized in that: The brick body (1) has at least one mounting groove (2) on two adjacent side walls, and the other two adjacent side walls have the same number of mounting strips (3) as the mounting grooves (2).

7. The porous honeycomb structure steel-clad brick as described in claim 6, characterized in that: The mounting groove (2) is connected end to end with the mounting strip (3).

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