Lining structure for fillet connection of ladle bottom and ladle wall of steel ladle

Abstract

The utility model discloses a steel ladle bottom and ladle wall fillet connection lining structure, which comprises a ladle shell, a permanent layer, a ladle wall brick, a ladle bottom brick, an arc brick, an insulation board and a fillet, the permanent layer is fixed on the inner side of the ladle shell, the ladle bottom brick is adhered and fixed at the bottom of the inner side of the permanent layer, the ladle wall brick is adhered and fixed on the inner side of the permanent layer in the vertical direction, and the arc brick is adhered and fixed on the inner side of the arc brick. Round corners are arranged in the permanent layer, and arc bricks are pasted and fixed to the round corners and serve as transition between the wall wrapping bricks and the bottom wrapping bricks. The round corner type connection is adopted, the round corner structure enables the molten steel turning effect to be good, molten steel stirring is more uniform, no dead angle exists, and the steel drilling phenomenon is prevented.

Description

Technical Field

[0001] This utility model relates to the field of steel ladle technology, and in particular to an inner lining structure for connecting the bottom and wall of a steel ladle with rounded corners. Background Technology

[0002] A steel ladle, also called a steel container, is an important vessel used in steel metallurgy, serving the dual purpose of transferring molten steel and refining it outside the ladle. The ladle lining consists of a permanent layer and a working layer. The working layer is constructed of refractory materials and is further divided into the bottom working layer, the wall working layer, and the slag line working layer, depending on the ladle's location. Generally, the connection between the bottom and wall bricks suffers from severe erosion. During construction, a flush joint is typically used, with a right-angle transition between the bottom and wall bricks. However, unevenness often occurs during the bottom brickwork construction, directly contacting the wall bricks, which can easily lead to steel drilling and other safety hazards during use. Therefore, there is an urgent need to develop a ladle lining structure with rounded corners for the bottom and wall connections. This rounded corner structure improves the molten steel's stirring and mixing, eliminates dead corners, and prevents steel drilling, thus overcoming the shortcomings of current applications and meeting current needs. Utility Model Content

[0003] The purpose of this utility model is to provide an inner lining structure for the rounded corner connection between the bottom and the wall of a steel ladle, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A lining structure for a steel ladle with rounded corners connecting the bottom and walls includes a shell, a permanent layer, wall bricks, bottom bricks, arc bricks, an insulation board, and rounded corners. The permanent layer is fixed to the inner side of the shell, the bottom bricks are attached to the bottom inner side of the permanent layer, the wall bricks are attached to the vertical inner side of the permanent layer, rounded corners are provided inside the permanent layer, and arc bricks are attached to the rounded corners, serving as a transition between the wall bricks and the bottom bricks.

[0006] Preferably, the rounded corners are covered with 5-8 layers of arc-shaped bricks.

[0007] Preferably, the small end of the arc-shaped brick has a diameter of 80-110mm and the large end has a width of 120-200mm.

[0008] Preferably, an insulation board is fixed inside the upper half of the casing.

[0009] The ladle bottom and the ladle wall fillet connection lining structure has the advantages that the corner is arranged at the corner of the permanent layer, the ladle wall brick and the ladle bottom brick are more gently connected through the arc brick, the molten steel stirring is more uniform, and the molten steel is prevented from being drilled. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structure schematic diagram of the ladle lining in the prior art.

[0011] Figure 2 It is a structure schematic diagram of the ladle lining in the prior art.

[0012] LEGEND:

[0013] 01, ladle shell-A; 02, permanent layer-A; 03, ladle wall brick-A; 04, ladle bottom brick-A; 1, ladle shell; 2, permanent layer; 3, ladle wall brick; 4, ladle bottom brick; 5, arc brick; 6, heat preservation plate; 7, corner. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0015] Referring to Figure 1 , the ladle lining structure in the prior art comprises a ladle shell-A01, a permanent layer-A02, a ladle wall brick-A03 and a ladle bottom brick-A04. The inner side of the ladle shell-A01 is fixed with the permanent layer-A02. The inner side of the permanent layer-A02 is vertically attached with the ladle wall brick-A03. The inner side of the permanent layer-A02 is horizontally attached with the ladle bottom brick-A04. The connection between the ladle bottom brick-A04 and the ladle wall brick-A03 is a right angle.

[0016] The specific embodiments are given below.

[0017] Referring to Figure 2The utility model discloses an inner lining structure of ladle bottom and ladle wall fillet connection, including the shell 1, permanent layer 2, ladle wall brick 3, ladle bottom brick 4, arc brick 5, heat preservation board 6 and fillet 7, the inside fixed of shell 1 has permanent layer 2, permanent layer 2 adopts ladle castable pouring and is formed (ladle castable is prior art, mainly adopts corundum, aluminium magnesium spinel, fused magnesite is the aggregate plus binder and is formed), the inside bottom of permanent layer 2 is pasted and fixed with ladle bottom brick 4, the inside vertical direction of permanent layer 2 is pasted and fixed with ladle wall brick 3, the permanent layer 2 is provided with fillet 7, the fillet 7 is pasted and fixed with arc brick 5, the arc brick 5 is as transition between ladle wall brick 3 and ladle bottom brick 4, the arc brick 5 of fillet 7 inner paste is 5-8 layers, the little head degree of arc brick 5 is 80-110mm big head width is 120-200mm, the upper half segment inside fixed of shell 1 has heat preservation board 6.

[0018] The calculation of the arc position of the fillet 7: the arc position is generally designed at 0.5-0.8 times the diameter of the ladle bottom of the permanent layer 2, the thickness of the ladle wall required by the steel plant is determined, the radius of the fillet and the center of the circle are determined, and finally the end position of the arc is determined according to the center of the circle and the radius of the fillet. Taking a 260-ton ladle of a certain steel plant as an example, the working layer thickness of the ladle wall of the plant is 210mm, the working layer thickness of the ladle bottom is 270mm, the diameter of the ladle bottom is 3892.4mm, and the arc position is designed as 2796mm. Since the length of the ladle wall is 210mm, the center of the circle is 548mm away from the ladle bottom brick, and a circle with a radius of 548mm is drawn with the center of the circle as the center. The arc brick 5 of the fillet part is designed as 5 rings, the small head width of the arc brick 5 is 112.6mm, and the maximum width of the big head is 180mm. When building, the fillet and the permanent layer part are tamped with ramming material.

[0019] Working principle: the inner lining structure of the ladle bottom and the ladle wall fillet connection, by setting the fillet 7 at the corner inside the permanent layer 2, the ladle wall brick 3 and the ladle bottom brick 4 are connected more gently by the arc brick 5, the structure of the fillet 7 makes the molten steel turning effect better, the molten steel stirring is more uniform, there is no dead angle, and the phenomenon of drilling steel is prevented (in steel production, the molten steel is poured through the sliding nozzle of the ladle. However, due to various reasons, the molten steel may penetrate or pass through the relevant parts or structures that should originally control and guide the molten steel, which is called "drilling steel").

[0020] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A lining structure of a round connection of a ladle bottom and a ladle wall, characterized by, The utility model relates to a kind of permanent layer and the wall of the outer shell of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the wall of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom 2. The steel ladle bottom and shell round corner connection lining structure according to claim 1, characterized in that, ​ 3. The steel ladle bottom and shell round corner connection lining structure according to claim 1, characterized in that, ​ 4. The steel ladle bottom and shell round corner connection lining structure according to claim 1, characterized in that, ​

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