Novel magnesia-carbon steel ladle refractory brick

Abstract

The utility model relates to a novel magnesia-carbon steel ladle refractory brick which comprises a brick body and is characterized in that two upper studs and two lower studs are embedded in the upper portion and the lower portion of the brick body at intervals, a splicing protrusion and a splicing groove are formed in the middle of the upper end face and the middle of the lower end face of the brick body, and an obliquely-downward upper chamfer face is arranged between the outer side face of the brick body and the outer edge of the upper end face of the brick body and the outer edge of the lower end face of the brick body. The inclined upward chamfered faces and the inclined downward chamfered faces of every two adjacent brick bodies are spliced to form a flow blocking area, a flow blocking plate with a triangular section is buckled in each flow blocking area, an upper extension plate is arranged on the upper edge of each flow blocking plate, a lower extension plate is arranged on the lower edge of each flow blocking plate, and through holes corresponding to the upper studs and the lower studs are formed in the upper extension plates and the lower extension plates. The tail ends of the upper stud and the lower stud penetrate through the corresponding through holes and then are buckled with the same baffle, locking nuts are screwed on the tail ends of the upper stud and the lower stud respectively, a groove with a triangular section is formed in the outer surface of the spoiler, and a pressing strip plate is arranged in the groove. The supporting strength of the brick body is not affected under the condition that the sealing performance and the heat preservation performance are guaranteed, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of refractory brick structure technology, specifically to a novel magnesia-carbon steel ladle refractory brick. Background Technology

[0002] Magnesia-carbon bricks are a commonly used type of refractory brick, typically comprising magnesia, graphite, and a binder. Magnesia possesses good chemical stability, providing high-temperature resistance and erosion resistance. Graphite helps improve thermal conductivity, thermal shock resistance, and slag erosion resistance. The binder acts as a bonding agent, tightly binding the various components together. Magnesia-carbon bricks can be used to construct the walls of steel ladles.

[0003] For example, CN 209736618 U discloses a novel magnesia-carbon steel ladle refractory brick, which includes a square brick body with straight grooves on four sides forming a square annular groove. The bottom surface of the straight grooves has a connecting opening extending vertically into the brick body. The brick body has a locking cavity communicating with the connecting opening, and a locking plate is pre-embedded within the locking cavity. A threaded hole is located at the center of the locking plate. One end face of the brick body has a cylindrical channel coaxial with the threaded hole and communicating with the locking cavity. This invention aims to tightly connect adjacent brick bodies during ladle construction and to install an intermediate plate to intercept molten steel in case of penetration, preventing excessive penetration. However, the following problems still exist: the annular groove, locking cavity, threaded hole, cylindrical channel, and inclined notch groove significantly weaken the supporting strength of the brick body and shorten its service life. Utility Model Content

[0004] The purpose of this invention is to provide a new type of magnesia-carbon steel refractory brick with a reasonable structure and reliable use that solves the above problems. It ensures airtightness and heat insulation without affecting the supporting strength of the brick body and has a long service life.

[0005] The technical solution of this utility model is:

[0006] A novel magnesia-carbon steel-clad refractory brick includes a brick body. Its key technical features are: two upper studs are pre-embedded at intervals on the upper part of the brick body; two lower studs are pre-embedded at intervals on the lower part of the brick body; a splicing protrusion is provided in the middle of the upper end face of the brick body; a splicing groove is provided in the middle of the lower end face; the splicing protrusion and the splicing groove extend along the length of the brick body; a downward chamfer is provided between the outer edge of the upper end face of the brick body and the outer surface of the brick body; an upward chamfer is provided between the outer edge of the lower end face of the brick body and the outer surface of the brick body; and adjacent bricks... The upward and downward chamfered surfaces of the main body are joined to form a flow-blocking area with a triangular cross-section. A flow-blocking plate with a triangular cross-section is fastened in the flow-blocking area. An upper extension plate is provided at the upper edge of the flow-blocking plate, and a lower extension plate is provided at the lower edge. The upper extension plate is provided with a through hole corresponding to the upper stud, and the lower extension plate is provided with a through hole corresponding to the lower stud. The ends of the upper stud and the lower stud pass through the corresponding through holes and are then fastened with the same baffle, and a locking nut is tightened on each. The outer surface of the flow-blocking plate is provided with a groove with a triangular cross-section, and a pressure strip is provided in the groove.

[0007] The aforementioned novel magnesium-carbon steel-clad refractory brick has a shallow inlay groove on the upper part of the brick body corresponding to the upper extension plate, a shallow inlay groove on the lower part of the brick body corresponding to the lower extension plate, a locking block on the inner side of the upper and lower extension plates, and a locking groove on the brick body corresponding to the locking block.

[0008] The aforementioned novel magnesium-carbon steel-clad refractory brick has an insulation cavity within its body.

[0009] The beneficial effects of this utility model are:

[0010] By using splicing protrusions and splicing grooves to form the joint between two adjacent brick bodies, a triangular flow-blocking zone is formed at the outer end of the joint. The flow-blocking plate in the flow-blocking zone further prevents liquid from flowing out, resulting in good sealing performance. The flow-blocking plate is positioned by upper and lower extension plates, upper and lower studs, pressure strips, and baffles. On the other hand, the pressure strips enhance the thermal insulation performance at the joint. This utility model has a long service life without affecting the supporting strength of the brick body. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram: 1. Brick body, 2. Upper stud, 3. Insulation cavity, 4. Locking nut, 5. Lower stud, 6. Upper extension plate, 7. Lower extension plate, 8. Baffle plate, 9. Pressing strip, 10. Baffle, 11. Locking block. Detailed Implementation

[0013] The present invention will be described in detail with reference to the accompanying drawings.

[0014] like Figure 1As shown, the novel magnesia-carbon steel refractory brick includes a brick body 1.

[0015] Among them, two upper studs 2 are pre-embedded at intervals on the upper part of the brick body 1, and two lower studs 5 are pre-embedded at intervals on the lower part of the brick body 1.

[0016] The upper end face of the brick body 1 is provided with a splicing protrusion in the middle and a splicing groove in the middle of the lower end face. The splicing protrusion and the splicing groove extend along the length direction of the brick body 1, respectively.

[0017] The upper end face of the brick body 1 has a downward chamfered surface between its outer edge and the outer side surface of the brick body 1, and the lower end face of the brick body 1 has an upward chamfered surface between its outer edge and the outer side surface of the brick body 1. The upward and downward chamfered surfaces of two adjacent brick bodies 1 are joined together to form a flow-blocking area with a triangular cross-section. A flow-blocking plate 8 with a triangular cross-section is installed in the flow-blocking area.

[0018] The flow-blocking plate 8 has an upper extension plate 6 along its upper edge and a lower extension plate 7 along its lower edge. The upper extension plate 6 has a through hole corresponding to the upper stud 2, and the lower extension plate 7 has a through hole corresponding to the lower stud 5. The ends of the upper stud 2 and the lower stud 5 pass through the corresponding through holes and are then fastened with the same baffle 10, and the locking nuts 4 are tightened respectively. The outer surface of the flow-blocking plate 8 has a groove with a triangular cross-section, and a pressure strip 9 is provided in the groove.

[0019] In this embodiment, the upper part of the brick body 1 is provided with a shallow inlay groove corresponding to the upper extension plate 6, and the lower part of the brick body 1 is provided with a shallow inlay groove corresponding to the lower extension plate 7. The inner sides of the upper extension plate 6 and the lower extension plate 7 are provided with locking blocks 11, and the brick body 1 is provided with locking grooves corresponding to the locking blocks 11. The brick body 1 is provided with a heat insulation cavity 3.

[0020] Working principle:

[0021] In use, two adjacent brick bodies 1 are joined together using splicing protrusions and splicing grooves. Then, a flow-blocking plate 8 is fastened to the outer end of the joint. The ends of the upper stud 2 and the lower stud 5 pass through the corresponding upper and lower extension plates. After the pressing strip plate 9 is inserted and the baffle 10 is fastened, the upper stud 2 and the lower stud 5 are respectively tightened with locking nuts 4 to achieve positioning.

[0022] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. A novel magnesia-carbon steel ladle refractory brick, comprising a brick body, characterized in that: Two upper studs are pre-embedded at intervals on the upper part of the brick body, and two lower studs are pre-embedded at intervals on the lower part of the brick body. A splicing protrusion is provided in the middle of the upper end face of the brick body, and a splicing groove is provided in the middle of the lower end face. The splicing protrusion and the splicing groove extend along the length of the brick body. A downward chamfer is provided between the outer edge of the upper end face of the brick body and the outer surface of the brick body, and an upward chamfer is provided between the outer edge of the lower end face of the brick body and the outer surface of the brick body. The upward chamfer surfaces of two adjacent brick bodies are aligned with the upward chamfer surfaces of the brick body. The lower chamfered surfaces are joined to form a flow-blocking area with a triangular cross-section. A flow-blocking plate with a triangular cross-section is fastened in the flow-blocking area. An upper extension plate is provided at the upper edge of the flow-blocking plate, and a lower extension plate is provided at the lower edge. The upper extension plate is provided with a through hole corresponding to the upper stud, and the lower extension plate is provided with a through hole corresponding to the lower stud. The ends of the upper stud and the lower stud pass through the corresponding through holes and are then fastened with the same baffle, and a locking nut is tightened on each. The outer surface of the flow-blocking plate is provided with a groove with a triangular cross-section, and a pressure strip is provided in the groove.

2. The novel magnesia-carbon steel ladle refractory brick according to claim 1, characterized in that: The upper part of the brick body is provided with a shallow inlay groove corresponding to the upper extension plate, and the lower part of the brick body is provided with a shallow inlay groove corresponding to the lower extension plate. The inner sides of the upper and lower extension plates are provided with locking blocks, and the brick body is provided with locking slots corresponding to the locking blocks.

3. The novel magnesia-carbon steel ladle refractory brick according to claim 1, characterized in that: The brick body is provided with a heat insulation cavity.

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