Comprehensive masonry structure of main runner slag line of blast furnace tapping runner

Abstract

The utility model relates to the technical field of blast furnace tapping channels, in particular to a blast furnace tapping channel main channel slag line comprehensive masonry structure which comprises a main channel, lining brick structures are arranged on the two sides of a channel body of the main channel, and a heat conduction plate used for heat dissipation is arranged on one side of each lining brick structure. The lining brick structure is composed of a plurality of lining bricks, the lining bricks are divided into horizontally-built lining bricks and vertically-built lining bricks according to the building state, the horizontally-built lining bricks are arranged at the top of the main ditch, the vertically-built lining bricks are arranged at the top of the horizontally-built lining bricks, and splicing structures are arranged on the lining bricks. The lining brick structure has the beneficial effects that in actual use, seriously eroded parts of the main runner are concentrated at the slag line of molten iron, and the lining brick structure is positioned at the slag line, is made of aluminum-silicon carbide-carbon, and has the characteristics of high strength, good slag erosion and permeation resistance, low porosity, good oxidation resistance and the like; the lining brick structure is used for bearing scouring erosion of the slag line, and the service life of the whole main channel is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace tapping channels, in particular to a comprehensive masonry structure of a main channel slag line of a blast furnace tapping channel. Background Art

[0002] The importance of the blast furnace taphole as the key channel for high-temperature molten iron and slag to flow after the blast furnace ironmaking is completed is self-evident. With the development of the modern steel industry, the widespread use of large blast furnaces and the emergence of extreme working conditions such as high furnace temperature and high wind pressure, the performance requirements for the blast furnace taphole are becoming increasingly stringent. In this context, improving the service life of the blast furnace taphole and reducing the maintenance frequency have become the focus of steel companies.

[0003] At present, the refractory materials used in blast furnace tapping channels have become relatively transparent, and the industry generally uses aluminum-silicon carbide-carbon castables as the main lining materials. This castable, with its excellent high temperature resistance, wear resistance and slag resistance, meets the use requirements of blast furnace tapping channels to a certain extent. However, due to the performance constraints of carbon itself, the amount of carbon added to the castable is very limited, which to a certain extent limits the improvement of the castable performance, making it difficult to significantly increase the service life of the tapping channel.

[0004] In addition, with the continuous advancement of blast furnace smelting technology, the working environment of blast furnace tapping troughs has become more complex and harsh. Extreme working conditions such as high temperature, high pressure, and high erosion have put forward higher requirements on the performance of tapping trough refractory materials. Therefore, industry professionals are constantly exploring new refractory materials technology and tapping trough design and transformation solutions in order to improve the service life and stability of tapping troughs.

[0005] Therefore, a comprehensive masonry structure of the main slag line of the blast furnace tapping ditch is needed to overcome the occurrence of the above-mentioned problems. Utility Model Content

[0006] In order to solve the above problems, the embodiment of the utility model provides a comprehensive masonry structure of the slag line of the main ditch of the blast furnace iron outlet ditch, which achieves the purpose of solving the problems raised in the background technology.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a blast furnace iron tapping ditch main ditch slag line comprehensive masonry structure, including a main ditch, both sides of the main ditch are provided with lining brick structures, and one side of the lining brick structure is provided with a heat conduction plate for heat dissipation;

[0008] The lining brick structure is composed of a plurality of lining bricks, and the lining bricks are divided into flat lining bricks and vertical lining bricks according to the masonry state. The flat lining bricks are arranged on the top of the main ditch, and the vertical lining bricks are arranged on the top of the flat lining bricks. A splicing structure is arranged on the lining bricks.

[0009] As a further improvement of the above technical solution:

[0010] The splicing structure comprises an L-shaped protrusion fixedly connected to the lining brick and an L-shaped groove opened on the lining brick.

[0011] Self-flowing material is poured between the lining brick structure and the heat conducting plate.

[0012] The top of the lining brick structure is poured with anti-oxidation corundum castable.

[0013] The beneficial effects of the embodiments of the utility model are:

[0014] In actual use, the severely corroded part of the main trench is concentrated at the slag line of the molten iron. In this application, the lining brick structure is located at the slag line. The lining brick structure adopts aluminum-silicon carbide-carbon, which has the characteristics of high strength, good slag erosion and permeability resistance, low porosity, good oxidation resistance, etc. That is, the lining brick structure is used to withstand the erosion of the slag line, thereby improving the overall service life of the main trench;

[0015] At the same time, the lining brick structure is composed of prefabricated lining bricks. When replacing the lining bricks damaged by erosion, it is more convenient to replace the lining bricks than for the cast main ditch, thereby reducing the time required for ditch repair; at the same time, the vertical lining bricks in the present application are located at the slag line, that is, the erosion is mainly concentrated on the vertical lining bricks, so when repairing, usually only the vertical lining bricks are needed, and the vertical lining bricks are arranged on the flat lining bricks, which are stacked and formed, and it is more convenient to replace the vertical lining bricks, thereby further reducing the time required for ditch repair;

[0016] The splicing structure provided on the lining bricks can prevent molten iron from entering the lining brick structure through the gaps between the lining bricks to cause structural damage, thereby extending the service life of the lining brick structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the lining brick structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the lining brick of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the lining brick of the utility model.

[0021] In the figure: 1. main groove; 2. lining brick structure; 21. lining brick; 3. heat conduction plate; 4. spliced ​​structure; 41. L-shaped protrusion; 42. L-shaped groove; 5. self-flowing material; 6. anti-oxidation corundum castable. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0023] See also Figures 1 to 4 The utility model embodiment discloses a blast furnace tapping ditch main ditch slag line comprehensive masonry structure, including a main ditch 1, both sides of the main ditch 1 are provided with lining brick structures 2, and one side of the lining brick structure 2 is provided with a heat conducting plate 3 for heat dissipation;

[0024] The lining brick structure 2 is composed of a plurality of lining bricks 21. The lining bricks 21 are divided into flat lining bricks and vertical lining bricks according to the masonry state. The flat lining bricks are arranged on the top of the main ditch 1, and the vertical lining bricks are arranged on the top of the flat lining bricks. A splicing structure 4 is arranged on the lining bricks 21.

[0025] In actual use, the severely corroded part of the main trench 1 is concentrated at the slag line of the molten iron. In this application, the lining brick structure 2 is located at the slag line. The lining brick structure 2 is made of aluminum-silicon carbide-carbon, which has the characteristics of high strength, good slag erosion resistance and permeability, low porosity, good oxidation resistance, etc. That is, the lining brick structure 2 is used to withstand the erosion of the slag line, thereby improving the overall service life of the main trench 1;

[0026] At the same time, the lining brick structure 2 is composed of prefabricated lining bricks 21. When replacing the lining bricks 21 damaged by erosion, it is more convenient to replace the lining bricks 21 than the cast main ditch 1, thereby reducing the time required for ditch repair. At the same time, the vertical lining bricks in the present application are located at the slag line, that is, the erosion is mainly concentrated on the vertical lining bricks. Therefore, during repair, usually only the vertical lining bricks are required, and the vertical lining bricks are arranged on the flat lining bricks, which are stacked and formed, and it is more convenient to replace the vertical lining bricks, thereby further reducing the time required for ditch repair.

[0027] The splicing structure 4 provided on the lining bricks 21 can prevent molten iron from entering the lining brick structure 2 through the gaps between the lining bricks 21 to cause structural damage, thereby extending the service life of the lining brick structure 2.

[0028] As a further illustration of this application:

[0029] The assembled structure 4 includes an L-shaped protrusion 41 fixedly connected to the lining brick 21 and an L-shaped groove 42 provided on the lining brick 21. In actual use, the flat lining bricks are prevented from entering the gaps between the flat lining bricks by the cooperation of the L-shaped protrusion 41 and the L-shaped groove 42, and the vertical lining bricks are also prevented from entering the gaps between the vertical lining bricks by the cooperation of the L-shaped protrusion 41 and the L-shaped groove 42; at the same time, the flat lining bricks are increased in connection area with the main ditch 1 by the L-shaped protrusion 41, so that the flat lining bricks are more stably fixed on the main ditch 1; the L-shaped protrusion 41 on the vertical lining brick is inserted into the L-shaped groove 42 on the flat lining brick, that is, the connection stability between the vertical lining bricks and the flat lining bricks is increased, and the molten iron is prevented from entering the gaps between the vertical lining bricks and the flat lining bricks.

[0030] As a further illustration of this application:

[0031] A self-flowing material 5 is poured between the lining brick structure 2 and the heat conducting plate 3 to increase the tightness of the connection between the lining brick structure 2 and the heat conducting plate 3, thereby facilitating the heat in the lining brick structure 2 to be transferred to the heat conducting plate 3.

[0032] As a further illustration of this application:

[0033] The top of the lining brick structure 2 is poured with an anti-oxidation corundum castable 6 , and the top of the lining brick structure 2 is covered by the anti-oxidation corundum castable 6 , thereby slowing down the oxidation of the lining brick structure 2 and extending the service life of the lining brick structure 2 .

[0034] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0036] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0037] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A comprehensive masonry structure for the main slag line of a blast furnace tapping ditch, characterized in that: It comprises a main groove (1), both sides of the groove of the main groove (1) are provided with lining brick structures (2), and one side of the lining brick structure (2) is provided with a heat conduction plate (3) for heat dissipation; The lining brick structure (2) is composed of a plurality of lining bricks (21). The lining bricks (21) are divided into flat lining bricks and vertical lining bricks according to the masonry state. The flat lining bricks are arranged on the top of the main ditch (1), and the vertical lining bricks are arranged on the top of the flat lining bricks. A splicing structure (4) is arranged on the lining bricks (21).

2. The blast furnace tapping ditch main ditch slag line comprehensive masonry structure according to claim 1 is characterized in that: The spliced ​​structure (4) comprises an L-shaped protrusion (41) fixedly connected to the lining brick (21) and an L-shaped groove (42) formed on the lining brick (21).

3. The blast furnace tapping ditch main ditch slag line comprehensive masonry structure according to claim 1, characterized in that: A self-flowing material (5) is poured between the lining brick structure (2) and the heat conducting plate (3).

4. The blast furnace tapping ditch main ditch slag line comprehensive masonry structure according to claim 1, characterized in that: The top of the lining brick structure (2) is cast with an anti-oxidation corundum castable (6).

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