Low-carbon magnesia carbon brick with good thermal shock resistance

Abstract

The utility model discloses a low-carbon magnesia carbon brick with good thermal shock resistance, relates to the technical field of low-carbon magnesia carbon brick production, and solves the problems that although the existing low-carbon magnesia carbon brick is good in masonry connection stability, the brick body form is more complicated, and adjacent brick bodies are different in shape, so that the brick body is not easy to deform. In order to solve the problems that in the prior art, production steps of the low-carbon magnesia carbon brick are complex, and protruding brick bodies are inconvenient to carry in the transportation process and are prone to colliding with one another to cause damage, through the matching arrangement of the low-carbon magnesia carbon brick bodies and the inserting rectangular bricks, the whole brick body is free of unstable protruding parts, the transportation stability is high, and the brick bodies are not prone to damage. The upper end and the lower end of the stacked integral brick are automatically clamped, the left end and the right end are clamped by inserting rectangular bricks, the anti-seismic stability is good, raw materials and additives of an original low-carbon magnesia carbon brick body are improved by selecting ingredients in the low-carbon magnesia carbon brick body, the mulling effect and the product quality are guaranteed, the oxidation resistance of the magnesia carbon brick is improved, and the service life of the magnesia carbon brick is prolonged. The service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of low-carbon magnesia-carbon brick production, in particular to a low-carbon magnesia-carbon brick with good thermal shock stability. Background Art

[0002] The ingredients of low carbon magnesia carbon bricks mainly include magnesia sand, carbon materials and binders. Magnesia sand is the main raw material of magnesia carbon bricks and has good refractory properties. Carbon materials are mainly graphite and carbon black, which can improve the thermal conductivity and antioxidant properties of magnesia carbon bricks. The binder is usually phenolic resin or other organic binders, which are used to combine magnesia sand, carbon materials and other additives.

[0003] A high-strength, oxidation-resistant, fire-free, low-carbon magnesia-carbon brick with a publication number of CN217737902U comprises a first brick body and a second brick body, wherein a plurality of T-shaped slots are provided on both the left and right surfaces of the second brick body, and a T-shaped plug is connected to both the left and right surfaces of the first brick body, which cooperates with the T-shaped slot to facilitate the connection between the first brick body and the second brick body, thereby ensuring the stability of the magnesia-carbon brick masonry. At the same time, a first through hole is provided in the first brick body along a horizontal direction, and the first through hole penetrates the first brick body, and a second through hole is provided in the second brick body, and the second through hole penetrates the second brick body, and is connected to the first through hole. The holes cooperate with each other, a plurality of first connecting holes are opened inside the first brick body, and a plurality of second connecting holes are opened inside the second brick body, which cooperate with the first connecting holes. Combined with the mutual cooperation of the first through holes and the second through holes, the stability of the connection between the first brick body and the second brick body is further improved, and the masonry of the magnesia carbon brick is convenient. Although the connection stability of the masonry of this magnesia carbon brick is good, the production steps of the low-carbon magnesia carbon brick are relatively complicated due to the complex form of the brick body and the different shapes of adjacent brick bodies, and the protruding bricks are inconvenient to carry during transportation and are prone to collision and damage.

[0004] In view of the above problems, a low-carbon magnesia-carbon brick with good thermal shock stability is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a low-carbon magnesium carbon brick with good thermal shock stability, which solves the problem that the existing low-carbon magnesium carbon bricks in the background technology have good masonry connection stability, but due to the complex form of the brick body and the different shapes of adjacent bricks, the production steps of the low-carbon magnesium carbon bricks are relatively complicated, and the protruding bricks are inconvenient to carry during transportation and are easy to collide with each other and cause damage.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-carbon magnesia-carbon brick with good thermal shock stability, comprising a low-carbon magnesia-carbon brick body, the low-carbon magnesia-carbon brick body is mutually engaged horizontally and vertically, and an interlocking rectangular brick is connected between two groups of low-carbon magnesia-carbon brick bodies adjacent to each other horizontally, and bottom bricks and top bricks are adjacently arranged at the upper and lower ends of the low-carbon magnesia-carbon brick body, the low-carbon magnesia-carbon brick body comprises an integral brick, an interlocking rectangular brick is inserted between the two groups of integral bricks horizontally, and the two groups of integral bricks are inserted and engaged with each other vertically, and the bottom brick and the top brick have the same shape as the integral brick after being assembled, and the integral brick is made of fused sintered magnesia sand with uniform shape and size as raw material, and the magnesia sand particles are ensured to be fully in contact with the binder during the mixing process, a certain proportion of nano carbon black is added to the ingredients, and a modified phenolic resin binder and an antioxidant silane coupling agent are used.

[0007] Preferably, the integral brick is a whole, which can be divided into two parts, the lower end of which is set as a top isomorphic brick, and the upper end of which is set as a bottom isomorphic brick.

[0008] Preferably, the upper end of the top brick is set to be a plane, and the lower end of the bottom brick is set to be a plane.

[0009] Preferably, a notch is provided on one side of the integral brick, and a protrusion is fixedly provided on the upper end of the integral brick.

[0010] Preferably, concave end sockets are provided in the middle of both sides of the notch.

[0011] Preferably, convex end sockets are provided in the middle of both sides of the convex block.

[0012] Preferably, the plug-in rectangular bricks are arranged as rectangular blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a low-carbon magnesium carbon brick with good thermal shock stability. Through the combination of the low-carbon magnesium carbon brick body and the plug-in rectangular brick, the overall brick body has no unstable protruding parts, and the overall brick, bottom brick and top brick can be sintered using the same mold. The overall bricks can be stacked and transported during transportation, and the plug-in rectangular bricks can be easily stacked and transported, with high transportation stability. The upper and lower ends of the stacked overall bricks are automatically engaged with each other, and the left and right ends are engaged by plug-in rectangular bricks, with good seismic stability. The existing low-carbon magnesium carbon brick body is relatively complex in form, and the shapes of adjacent bricks are different, resulting in complex production steps of low-carbon magnesium carbon bricks, and the protruding bricks are inconvenient to transport during transportation and are prone to collision and damage.

[0015] 2. The utility model provides a low-carbon magnesia carbon brick with good thermal shock stability. The raw materials and additives of the original low-carbon magnesia carbon brick body are improved by selecting and setting the ingredients in the low-carbon magnesia carbon brick body. The electric melting sintered magnesia sand is selected because it has high density and strength, can meet the use requirements, and the shape and size of the particles are uniform, which can ensure the mixing effect and product quality. The optimization of the shape and size of the magnesia sand particles is mainly controlled by changing the crushing method and screening process of the magnesia sand, and the thermal shock stability and slag permeability resistance of the magnesia carbon brick are improved. By adding a certain proportion of nano carbon black to the ingredients, the performance of the magnesia carbon brick can be enhanced. The use of modified phenolic resin binder can improve the carbonization performance of the binder by introducing a graphitized carbon precursor into the phenolic resin, thereby improving the thermal shock stability and high-temperature strength of the magnesia carbon brick. Adding antioxidants can add silane coupling agents to the ingredients to improve the antioxidant properties of the magnesia carbon brick and extend the service life of the brick body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 The overall split structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 3 The overall split structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 4 It is a schematic diagram of the overall stacking structure of the utility model.

[0020] In the figure: 1. low carbon magnesium carbon brick body; 11. integral brick; 111. top isomorphic brick; 112. bottom isomorphic brick; 12. recess; 13. recessed end socket; 14. convex block; 15. convex end socket; 2. bottom brick; 3. top brick; 4. plug-in rectangular brick. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Combination Figure 1The utility model discloses a low-carbon magnesia-carbon brick with good thermal shock stability, comprising a low-carbon magnesia-carbon brick body 1, which is mutually engaged in the horizontal and vertical directions, and a plug-in rectangular brick 4 is connected between two groups of low-carbon magnesia-carbon brick bodies 1 adjacent to each other in the horizontal direction, and a bottom brick 2 and a top brick 3 are adjacently arranged at the upper and lower ends of the low-carbon magnesia-carbon brick body 1, and the low-carbon magnesia-carbon brick body 1 comprises an integral brick 11, and a plug-in rectangular brick 4 is inserted between the two groups of integral bricks 11 in the horizontal direction, and the two groups of integral bricks 11 in the vertical direction are mutually inserted and engaged, and the bottom brick 2 and the top brick 3 have the same shape as the integral brick 11 after being assembled with each other, and the integral brick 11 is made of fused sintered magnesia with uniform shape and size as raw material, and the magnesia particles are ensured to be fully in contact with the binder during the mixing process, a certain proportion of nano carbon black is added to the ingredients, and a modified phenolic resin binder and an antioxidant silane coupling agent are used.

[0024] Specifically, the whole brick 11 has no unstable protruding parts, and the whole brick 11, the bottom brick 2 and the top brick 3 can be sintered using the same mold. The whole brick 11 can be stacked and transported during transportation, and the inserted rectangular bricks 4 can be easily stacked and transported, with high transportation stability. The upper and lower ends of the stacked whole bricks 11 are automatically engaged with each other, and the left and right ends are engaged by inserting the rectangular bricks 4, with good seismic stability. The raw materials and additives of the low-carbon magnesia carbon brick body 1 are improved, and the fused sintered magnesia is selected because it has high density and strength, can meet the use requirements, and the shape and size of the particles are uniform, which can be To ensure the mixing effect and product quality, the shape and size of magnesia sand particles are optimized mainly by changing the crushing method and screening process of magnesia sand to improve the thermal shock stability and slag permeability of magnesia carbon bricks. By adding a certain proportion of nano carbon black to the ingredients, the performance of magnesia carbon bricks can be enhanced. The use of modified phenolic resin binder can improve the carbonization performance of the binder by introducing graphitized carbon precursor into the phenolic resin, thereby improving the thermal shock stability and high temperature strength of magnesia carbon bricks. Adding antioxidants can add silane coupling agents to the ingredients to improve the antioxidant properties of magnesia carbon bricks and extend the service life of the bricks.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] Example:

[0027] Combination Figure 2-Figure 4 The overall brick 11 is a whole, which can be divided into two parts. The lower end is set as the top isomorphic brick 111, and the upper end is set as the bottom isomorphic brick 112. The overall brick 11 is a whole to ensure the stability of the brick body. The top isomorphic brick 111 has the same structure as the top brick 3, and the bottom isomorphic brick 112 has the same structure as the bottom brick 2.

[0028] The upper end of the top brick 3 is set to be a plane, and the lower end of the bottom brick 2 is set to be a plane. This structure ensures the horizontal stability of the upper and lower ends when the brick wall is stacked, and is easy to use.

[0029] A notch 12 is provided on one side of the integral brick 11 , and a protrusion 14 is fixedly provided on the upper end of the integral brick 11 . The notch 12 and the protrusion 14 match each other in size and shape, so as to achieve a fixed engagement with each other.

[0030] A recessed end socket 13 is provided in the middle of both sides of the recess 12, and a plug-in rectangular brick 4 is inserted into the recessed end socket 13. The integral bricks 11 at both ends of the brick wall are not overlapped with the plug-in rectangular bricks 4 on both sides. Since the recessed end socket 13 is provided in the middle position, the integral bricks 11 can be overlapped with each other to support both sides, and the brick bodies at both ends of the recessed end socket 13 can be closed to each other without causing voids.

[0031] The middle parts of both sides of the convex block 14 are provided with convex end sockets 15 , which are superimposed on the concave end sockets 13 and are engaged with the rectangular bricks 4 .

[0032] The plug-in rectangular bricks 4 are arranged as rectangular blocks. The rectangular blocks have a simple structure and can ensure the connection stability between the two groups of integral bricks 11 inserted therein, thereby preventing the integral bricks 11 from being stacked and misaligned.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-carbon magnesia-carbon brick with good thermal shock stability, comprising a low-carbon magnesia-carbon brick body (1), characterized in that: The low-carbon magnesium-carbon brick bodies (1) are mutually engaged in the horizontal and vertical directions, and a plug-in rectangular brick (4) is connected between two groups of low-carbon magnesium-carbon brick bodies (1) adjacent to each other in the horizontal direction. Bottom bricks (2) and top bricks (3) are adjacently arranged at the upper and lower ends of the low-carbon magnesium-carbon brick bodies (1); The low-carbon magnesium carbon brick body (1) comprises integral bricks (11), a plug-in rectangular brick (4) is inserted between two groups of integral bricks (11) in a horizontal direction, and two groups of integral bricks (11) in a vertical direction are inserted and engaged with each other, and the bottom brick (2) and the top brick (3) have the same shape as the integral brick (11) after being assembled together.

2. A low-carbon magnesium carbon brick with good thermal shock stability according to claim 1, characterized in that: The integral brick (11) is a whole, which can be divided into two parts. The lower end is set as a top isomorphic brick (111), and the upper end is set as a bottom isomorphic brick (112).

3. A low-carbon magnesium-carbon brick with good thermal shock stability according to claim 1, characterized in that: The upper end of the top brick (3) is arranged to be a plane, and the lower end of the bottom brick (2) is arranged to be a plane.

4. A low-carbon magnesium-carbon brick with good thermal shock stability according to claim 1, characterized in that: A notch (12) is provided on one side of the integral brick (11), and a protrusion (14) is fixedly provided on the upper end of the integral brick (11).

5. A low-carbon magnesium-carbon brick with good thermal shock stability according to claim 4, characterized in that: Concave end sockets (13) are provided in the middle of both sides of the notch (12).

6. A low-carbon magnesium-carbon brick with good thermal shock stability according to claim 4, characterized in that: The middle parts of both sides of the convex block (14) are provided with convex end sockets (15).

7. The low-carbon magnesium carbon brick with good thermal shock stability according to claim 1, characterized in that: The inserted rectangular bricks (4) are arranged as rectangular blocks.

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