Non-unpacking refractory steel ladle lining structure

Abstract

The utility model provides an unpacking-free refractory steel ladle lining structure which comprises a steel ladle shell, a heat preservation layer, a ladle wall permanent layer, a retaining working layer, a dismantling working layer, a ladle bottom permanent layer and bottom building refractory bricks, wherein the heat preservation layer, the ladle wall permanent layer, the retaining working layer and the dismantling working layer are sequentially arranged on the inner side wall of the steel ladle shell from outside to inside, and the ladle bottom permanent layer and the bottom building refractory bricks are arranged at the ladle bottom. A refractory material layer is arranged between the retaining working layer and the dismantling working layer, and the ladle wall permanent layer and the ladle bottom permanent layer are integrally formed. The refractory material layer is arranged between the reserved working layer and the demolition working layer, so that a circle of isolation layer can be formed at the reserved working layer, slag of the demolition working layer located on the inner layer is prevented from permeating into the reserved working layer to corrode the reserved working layer, and the permeation depth of the slag is reduced. And the ladle wall permanent layer and the ladle bottom permanent layer are integrally formed, so that the rigidity of the whole structure of the steel ladle lining can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment manufacturing, and particularly relates to a refractory ladle lining structure that does not require unpacking. Background Art

[0002] At present, the overall demolition and repair mode of the permanent layer of the molten pool is adopted in China. When the ladle refractory is used for a certain service life, due to the high-temperature erosion and physical scouring of the molten steel on the ladle refractory, the remaining thickness of the refractory is lower than the safe operating size of the ladle. At this time, the working layer needs to be completely demolished and refractory bricks need to be re-laid for a major overhaul of the ladle. On the one hand, the refractory cost is relatively high. On the other hand, the overall repair workload of the ladle is too large, and the ladle operation cycle is extended, resulting in an increase in the number of ladle shells that need to be prepared for each production line. The gas consumption for baking the ladle with the overall refractory repair increases, directly affecting the converter. And to ensure the molten steel pouring temperature, the tapping temperature needs to be increased by more than 20°C, which seriously affects the refractory cost and smelting cost of the ladle.

[0003] In the prior art, a protective layer brick is added between the permanent layer and the working layer. However, due to the reduction in the thickness of the working layer, the working layer needs to be completely demolished when it is eroded to a certain depth. Although the thickness of the demolished working layer is reduced, when the erosion depth reaches the protective layer brick, the protective layer brick also needs to be demolished. Therefore, the actual application effect is not good. Moreover, since the working layer is split into two layers, the types of precast bricks need to be increased, resulting in an increase in precast work. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a refractory ladle lining structure that does not require unpacking, which can play a better role in isolating the erosion of molten steel, achieve the effect of demolishing part of the working layer, and reduce the material cost.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A refractory ladle lining structure that does not require unpacking includes a ladle shell, a heat insulation layer, a permanent layer of the ladle wall, a retained working layer, a demolished working layer, which are sequentially arranged on the inner side wall of the ladle shell from outside to inside, and a permanent layer of the ladle bottom and a bottom refractory brick arranged at the bottom of the ladle;

[0007] A refractory material layer is arranged between the retained working layer and the demolished working layer;

[0008] The permanent layer of the ladle wall and the permanent layer of the ladle bottom are integrally formed.

[0009] Furthermore, the lower ends of the retained working layer, the refractory material layer, and the demolished working layer are in contact with and connected to the permanent layer of the ladle bottom.

[0010] Further, the permanent layer of the ladle wall is provided with a wedge-shaped portion at the position of the ladle mouth, and the wedge-shaped portion is in abutting connection with the reserved working layer and the removed working layer at the top.

[0011] Further, the ladle shell is provided with a convex ring extending towards the center at the position of the wedge-shaped portion, and the convex ring is embedded on the wedge-shaped portion.

[0012] Further, a corundum casting layer arranged in a ring shape is further provided between the removed working layer and the bottom refractory brick.

[0013] Further, the reserved working layer includes a reserved slag line area and a reserved ladle wall area arranged from top to bottom, and the removed working layer includes a removed slag line area and a removed ladle wall area arranged from top to bottom;

[0014] The reserved slag line area and the removed slag line area are located in the same layer vertically;

[0015] The reserved ladle wall area and the removed ladle wall area are located in the same layer vertically.

[0016] Further, the reserved ladle wall area includes a plurality of first masonry bricks, and the removed ladle wall area all includes a plurality of second masonry bricks;

[0017] The number of the first masonry bricks is equal to that of the second masonry bricks, and the structures are the same.

[0018] Further, the removed slag line area includes a plurality of third masonry bricks and a top masonry brick, the top masonry brick has a wedge-shaped structure, and the wedge-shaped portion includes a first abutting portion and a second abutting portion;

[0019] The second abutting portion includes an abutting inclined surface and a second abutting plane, and the second abutting portion is abutted and connected with the top masonry brick in a matching manner.

[0020] Further, the first abutting portion includes a first abutting plane, and the first abutting plane is abutted on the top masonry brick.

[0021] Further, the reserved slag line area includes a plurality of fourth masonry bricks, and the fourth masonry bricks have the same structure as the first masonry bricks;

[0022] The fourth masonry bricks, the top masonry brick and the third masonry bricks are made of magnesia-carbon bricks;

[0023] The first masonry bricks and the second masonry bricks are made of magnesia-aluminum-carbon bricks.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] The refractory ladle lining structure without unpacking of the present utility model is provided with a refractory layer between the retained working layer and the removed working layer, so as to form an isolation layer around the retained working layer, prevent the slag of the removed working layer in the inner layer from penetrating into the retained working layer for corrosion, and reduce the penetration depth of the slag. By integrally forming the permanent layer of the ladle wall and the permanent layer of the ladle bottom, the stiffness of the overall structure of the ladle lining can be increased.

[0026] The refractory ladle lining structure without unpacking of the present utility model is simple and easy to operate on-site during repair, reducing the labor intensity of cold repair; it has a remarkable effect of reducing the refractory cost of the ladle; it reduces the gas consumption for baking the ladle and the smelting cost; it can effectively reduce various production accidents of the ladle.

[0027] In addition, by connecting the lower ends of the retained working layer, the refractory layer and the removed working layer to abut against the permanent layer of the ladle bottom. When the ladle is used at high temperature for a long time, when the stress caused by thermal expansion and contraction exceeds the bearing range of the bottom bricks of the ladle, through the setting of the removed working layer, the stress of thermal expansion and contraction can be concentrated on the removed working layer at the corner, avoiding the fracture of the bottom refractory bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0029] Figure 1 is a schematic structural diagram of the refractory ladle lining structure without unpacking according to Embodiment 1 of the present utility model;

[0030] Figure 2 is Figure 1 a partial enlarged view of I in

[0031] Figure 3 is a schematic structural diagram of the refractory ladle lining structure without unpacking according to Embodiment 2 of the present utility model;

[0032] Figure 4 is Figure 2 a partial enlarged view of II in

[0033] DESCRIPTION OF THE REFERENCE NUMERALS:

[0034] 1. Ladle shell; 2. Insulation layer; 3. Permanent layer of ladle wall; 4. Retained working layer; 5. Removed working layer; 6. Permanent layer of ladle bottom; 7. Bottom refractory bricks; 8. Refractory layer; 9. Wedge part; 10. Corundum casting layer;

[0035] 101. Convex ring;

[0036] 401. Reserved slag line area; 402. Reserved ladle wall area; 501. Demolished slag line area; 502. Demolished ladle wall area;

[0037] 901. First abutting plane; 902. Abutting inclined plane; 903. Second abutting plane;

[0038] 4011. Fourth masonry brick; 4021. First masonry brick;

[0039] 5011. Third masonry brick; 5012. Top masonry brick; 5021. Second masonry brick. Detailed implementation mode

[0040] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0041] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0042] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connector" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0043] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0044] Embodiment 1

[0045] This embodiment relates to a refractory ladle lining structure without ladle demolition, including a ladle shell 1, a heat preservation layer 2, a ladle wall permanent layer 3, a reserved working layer 4, a demolished working layer 5, which are sequentially arranged on the inner side wall of the ladle shell 1 from outside to inside, and a ladle bottom permanent layer 6 and a bottom refractory brick 7 arranged at the ladle bottom. A refractory material layer 8 is arranged between the reserved working layer 4 and the demolished working layer 5, and the ladle wall permanent layer 3 and the ladle bottom permanent layer 6 are integrally formed.

[0046] The refractory ladle lining structure without unpacking in this embodiment is provided with a refractory layer 8 between the remaining working layer 4 and the removed working layer 5, so as to form an insulating layer around the remaining working layer 4, prevent the slag of the removed working layer 5 located inside from penetrating into the remaining working layer 4 for corrosion, and reduce the penetration depth of the slag. By integrally forming the permanent layer 3 of the ladle wall and the permanent layer 6 of the ladle bottom, the stiffness of the overall structure of the ladle lining can be increased.

[0047] Based on the above overall introduction, an exemplary structure of the refractory ladle lining structure without unpacking in this embodiment is as Figures 1 to 2 shown. The thickness range of the refractory layer 8 in this embodiment is 30 - 60 mm, preferably 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm. The thickness range of the remaining working layer 4 in this embodiment is preferably 65 mm - 80 mm, preferably 65 mm, 70 mm, 75 mm, 80 mm. The permanent layer 3 of the ladle wall and the permanent layer 6 of the ladle bottom in this embodiment are integrally cast.

[0048] Preferably, as Figure 1 shown, the lower ends of the remaining working layer 4, the refractory layer 8 and the removed working layer 5 are in butt connection with the permanent layer 6 of the ladle bottom. In this embodiment, by connecting the lower ends of the remaining working layer 4, the refractory layer 8 and the removed working layer 5 to the permanent layer 6 of the ladle bottom. When the ladle is used at high temperature for a long time, when the stress caused by thermal expansion and contraction exceeds the bearing range of the bottom bricks, through the setting of the removed working layer 5, the thermal expansion and contraction stress can be concentrated on the removed working layer 5 at the corner, avoiding the fracture of the bottom refractory brick 7.

[0049] The refractory layer 8 in this embodiment is made of high-grade fused magnesia and is precisely formulated by adding composite admixtures and binders. This refractory has high bonding strength, small mortar joints during masonry, and the masonry lining has an overall structural strength. At the same time, a certain amount of spinel will be formed during the use of this refractory mud, and a small micro-expansion will occur, and the strength will gradually increase. This refractory has the same erosion resistance and impermeability as the working lining of the ladle, is convenient for construction, and is a dry powder bagged material, which is convenient for storage.

[0050] As a specific implementation manner, the insulation layer 2 in this embodiment uses a 10-mm-thick nano-insulation board, the thickness of the permanent layer 3 of the ladle wall is 60 mm, it is poured with permanent layer casting material, and a vibrating rod is used to tamp the casting material.

[0051] Furthermore, as Figure 1 shown, the permanent layer 3 of the ladle wall is provided with a wedge part 9 at the position of the ladle mouth, and the wedge part 9 is in butt connection with the remaining working layer 4 and the removed working layer 5 at the top. By setting the wedge part 9, the remaining working layer 4 and the removed working layer 5 can be pressed in height, improving the overall masonry strength.

[0052] Still asFigure 1 As shown, at the position of the wedge part 9 of the ladle shell 1, there is a convex ring 101 extending towards the center, and the convex ring 101 is embedded on the wedge part 9. The convex ring 101 is integrally formed with the ladle shell 1, and the setting of the convex ring 101 increases the strength of the permanent layer 3 of the ladle wall and improves the strength of the ladle opening.

[0053] In addition, as Figure 1 shown, there is also a corundum casting layer 10 arranged in a ring shape between the removed working layer 5 and the bottom refractory brick 7. The outside of the bottom refractory brick 7 is cast with corundum castable, which is a refractory castable prepared with super grade high alumina clinker or fused brown corundum as the aggregate, adding refractory powder, calcium aluminate cement binder, silica fume and additives. It is usually constructed by the casting method, and can be cast into an integral lining, or precast blocks of castable can be customized from the manufacturer and spliced on site. The corundum casting layer 10 has high compressive strength and strong stability of the high-temperature lining; large bulk density and strong resistance to slag erosion and permeability of the integral lining.

[0054] In addition, still as Figure 1 and Figure 2 shown, the remaining working layer 4 includes a remaining slag line area 401 and a remaining ladle wall area 402 arranged from top to bottom, and the removed working layer 5 includes a removed slag line area 501 and a removed ladle wall area 502 arranged from top to bottom. The remaining slag line area 401 and the removed slag line area 501 are located on the same layer up and down, and the remaining ladle wall area 402 and the removed ladle wall area 502 are located on the same layer up and down.

[0055] Furthermore, as Figure 1 and Figure 2 shown, the remaining ladle wall area 402 includes several first masonry bricks 4021, and the removed ladle wall area 502 all includes several second masonry bricks 5021. The number of the first masonry bricks 4021 is equal to that of the second masonry bricks 5021, and the structures are the same. By setting the refractory material layer 8, when the heights of the first masonry bricks 4021 and the second masonry bricks 5021 are the same, it can block the penetration of molten steel at the upper and lower joints, so as to achieve the purpose of reducing the types of masonry bricks.

[0056] In addition, as Figure 1 shown, the removed slag line area 501 includes several third masonry bricks 5011 and a top masonry brick 5012. The top masonry brick 5012 has a wedge-shaped structure. The wedge part 9 includes a first abutting part and a second abutting part. The second abutting part includes an abutting inclined surface 902 and a second abutting plane 903, and the second abutting part abuts against and is adaptively connected to the top masonry brick 5012.

[0057] By abutting against the inclined plane 902 and the first abutting plane 901, the masonry strength of the ladle opening can be increased, and the gap between the first masonry brick 4021, the second masonry brick 5021, and the third masonry brick 5011 located below can be reduced, thereby increasing the stability of the ladle lining structure.

[0058] Further, as Figure 1 shown, the first abutting portion includes a first abutting plane 901, and the first abutting plane 901 abuts against the top masonry brick 5012. By providing the first abutting plane 901, an abutment against the remaining working layer 4 is formed. After the external removal working layer 5 is removed, since the top masonry brick 5012 still abuts against the upper part of the remaining working layer 4, it is ensured that the remaining working layer 4 is not affected by the removal working layer 5, thereby improving the firmness. During the removal process, if the refractory layer 8 is damaged, it can be repaired in a timely manner, which is easy to implement.

[0059] Preferably, as Figure 1 shown, the remaining slag line area 401 includes a plurality of fourth masonry bricks 4011. The fourth masonry bricks 4011 have the same structure as the first masonry bricks 4021. The fourth masonry bricks 4011, the top masonry brick 5012, and the third masonry brick 5011 are made of magnesia-carbon bricks;

[0060] The first masonry bricks 4021 and the second masonry bricks 5021 are made of magnesia-aluminum-carbon bricks. As shown in Figure 1 , rings 1 to 25 of this embodiment are the ladle wall working layer, and rings 26 to 40 are the slag line working layer. Since the slag line working layer is easily contaminated by molten slag and steel water.

[0061] The masonry bricks in the slag line working layer of this embodiment are made of magnesia-carbon bricks, combining the excellent high-temperature performance of magnesia materials and the good resistance to the penetration of high-temperature molten slag and thermal shock stability of carbon materials. The ladle wall working layer uses magnesia-aluminum-carbon bricks. The alumina and magnesia in the magnesia-aluminum-carbon bricks can form magnesia-aluminum spinel with a higher refractoriness at high temperatures, improving the high-temperature stability of the bricks.

[0062] The implementation steps of the ladle lining structure of the refractory material for unpacking the ladle in this article are as follows:

[0063] 1. Ladle masonry sequence

[0064] The corundum castable layer at the bottom of the ladle is cast, the bottom permanent layer 6 is cured, the insulation layer 2 is fixed, the remaining working layer 4 is masoned, the refractory layer 8 is masoned, the removal working layer 5 is masoned, the bottom refractory brick 7 is masoned, the top brick is masoned, and the ladle wall permanent layer 3 and the bottom permanent layer 6 are cast in sequence for masonry, curing, and baking.

[0065] 2. Masonry of the permanent layer

[0066] (1) Bottom permanent layer 6

[0067] ①Weld anchor bolts at the middle part of the bottom of the ladle between the seating bricks. The distance between the anchor bolts is 30 mm horizontally and 25 mm vertically.

[0068] ②Position the porous plug brick and the nozzle seating brick, and plug the inner holes with a ductile material.

[0069] ③Stir the corundum castable for the permanent layer for about 20 minutes. The water addition ratio is about 5%. Stir thoroughly.

[0070] ④Lay the stirred corundum castable for the permanent layer on the bottom of the ladle, and vibrate it with a vibrating rod to the specified thickness (150 mm).

[0071] (2) Permanent layer 3 of the ladle wall

[0072] First, stick two layers of nano thermal insulation boards with a total thickness of 10 mm to the ladle wall of the ladle shell 1. Then, lay the first layer of ring bricks on the outside. Build 4 - 5 layers of safety residual bricks with a width of 65 mm at a time. Leave a 60 mm gap with the thermal insulation layer 2 and pour it with the permanent layer castable. Use a vibrating rod to tamp the castable. Build layer by layer until the ladle mouth.

[0073] 3. Lining of the working layer

[0074] The lining sequence of the ladle working layer is to line the ladle wall first and then the ladle bottom.

[0075] (1) Ladle wall

[0076] ①Use magnesia fire clay for lining the ladle wall. The water addition ratio is about 25%. Stir for about 20 minutes and stir thoroughly.

[0077] ②The lining method is flat laying. The big end is closely attached to the permanent layer, and the small end faces the center of the ladle. Do not line in the reverse direction.

[0078] ③Keep the lining of the working layer 4. The lining method of the ladle wall is circular lining, with a total of 40 rings. Counting from the bottom up, rings 1 - 25 are the working layer of the ladle wall, rings 26 - 40 are the slag line layer, and ring 41 is lined with a ring of ladle mouth bricks. The first lining brick 4021 of the working layer 4 is lined with magnesia - carbon - alumina bricks of 200 / 190*70*100 mm or 200 / 196*70*100 mm. The fourth lining brick 4011 is lined with magnesia - carbon bricks of 200 / 190*70*100 mm or 200 / 196*70*100 mm.

[0079] ④Lining of the refractory layer 8. Apply a refractory material with a thickness of 35 mm by smearing on the outer circle of the retained working layer 4.

[0080] ⑤Demolish the masonry of working layer 5. The sleeve masonry method of the wall is circular masonry, with a total of 40 rings. Counting from bottom to top, rings 1 - 25 are the working layer of the wall, rings 26 - 40 are the slag line layer, and one ring of mouth bricks is masoned at the 41st ring. The second masonry brick 5021 of working layer 4 is masoned with magnesia-aluminum-carbon bricks of 200 / 190*70*100mm or 200 / 196*70*100mm. The masonry of the third masonry brick 5011 includes that for rings 19 - 20 of the wall bricks, magnesia-aluminum-carbon bricks of 250 / 231*100*100mm or 247.5 / 240*100*100mm are used for sleeve masonry, for rings 21 - 25 of the wall bricks, magnesia-aluminum-carbon bricks of 234 / 213*120*100mm or 222 / 207*120*100mm are used for sleeve masonry, for rings 26 - 40 of the slag line bricks, magnesia-carbon bricks of 234 / 213*120*100mm or 222 / 207*120*100mm are used for sleeve masonry, and the 41st ring is masoned with corner-lacking bricks.

[0081] (2) Ladle bottom

[0082] ①The impact area of the ladle bottom accounts for 1 / 3 of the area of the working layer of the ladle bottom, and is masoned with magnesia-aluminum-carbon bricks of 350×150×100mm; the non-impact area is masoned with magnesia-aluminum-carbon bricks of 300×150×100mm and 300×100×80mm, and the masonry method is dry masonry without using fire clay.

[0083] ②During the masonry process, use a hammer to tap to ensure that the brick joints are less than 1mm, and finally fill the brick joints with dry fire clay.

[0084] ③When the whole bricks cannot be placed during the masonry of the working layer of the ladle bottom and cannot withstand the periphery of the ladle, it is necessary to mason the adjustment bricks at the ladle bottom or cut the bricks according to the actual size. Finally, leave a triangular gap and tamp and level it with the well-stirred corundum castable.

[0085] ④Leave a gap of 40 - 50mm between the working layer of the ladle bottom and the seat bricks, and vibrate and compact it with the well-stirred corundum castable.

[0086] Example 2

[0087] This example relates to a refractory ladle lining structure that does not require ladle teardown. As shown in Figure 3 and Figure 4 , the difference between this refractory ladle lining structure that does not require ladle teardown and that of Example 1 is that the masonry bricks in the retained working layer 4 and the masonry bricks in the demolished working layer 5 are stagger-masoned. Through stagger-masonry, the integrity of the retained working layer 4 can be further ensured, and contamination by molten steel or slag can be avoided.

[0088] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A non-unpacking refractory ladle lining structure, comprising a ladle shell (1), characterized in that: From the outside to the inside, the insulation layer (2) arranged on the inner wall of the ladle shell (1), the ladle wall permanent layer (3), the retained working layer (4), the removed working layer (5), and the ladle bottom permanent layer (6) and the bottom refractory bricks (7) arranged on the ladle bottom are arranged in sequence; A refractory material layer (8) is provided between the retaining working layer (4) and the demolishing working layer (5); The bag wall permanent layer (3) and the bag bottom permanent layer (6) are integrally formed.

2. The refractory ladle lining structure without unpacking according to claim 1 is characterized in that: The lower ends of the retaining working layer (4), the refractory material layer (8) and the demolition working layer (5) are abutted and connected to the permanent layer (6) at the bottom of the package.

3. The refractory ladle lining structure without unpacking according to claim 2 is characterized in that: The permanent layer (3) of the ladle wall is provided with a wedge-shaped portion (9) at the ladle mouth, and the wedge-shaped portion (9) is abutted and connected with the retaining working layer (4) and the removal working layer (5) at the top.

4. The refractory ladle lining structure without unpacking according to claim 3 is characterized in that: The ladle shell (1) is provided with a convex ring (101) extending toward the center at the position of the wedge-shaped portion (9), and the convex ring (101) is embedded in the wedge-shaped portion (9).

5. The unpacking-free refractory ladle lining structure according to claim 3 is characterized in that: A corundum casting layer (10) arranged in an annular manner is also provided between the demolition working layer (5) and the bottom refractory bricks (7).

6. The unpacking-free refractory ladle lining structure according to claim 3 is characterized in that: The retaining working layer (4) includes a retaining slag line area (401) and a retaining wall area (402) arranged from top to bottom, and the removing working layer (5) includes a removing slag line area (501) and a removing wall area (502) arranged from top to bottom; The slag line retention area (401) and the slag line removal area (501) are located on the same layer; The retaining wall area (402) and the removing wall area (502) are located on the same layer.

7. The unpacking-free refractory ladle lining structure according to claim 6 is characterized in that: The retaining wall area (402) includes a plurality of first masonry bricks (4021), and the removing wall area (502) includes a plurality of second masonry bricks (5021); The first masonry bricks (4021) and the second masonry bricks (5021) are equal in number and have the same structure.

8. The unpacking-free refractory ladle lining structure according to claim 7 is characterized in that: The demolition slag line area (501) includes a plurality of third masonry bricks (5011) and a top masonry brick (5012), the top masonry brick (5012) is in a wedge-shaped structure, and the wedge-shaped portion (9) includes a first abutment portion and a second abutment portion; The second abutting portion comprises an abutting inclined surface (902) and a second abutting plane (903), and the second abutting portion abuts against the top masonry brick (5012) for adaptive connection.

9. The unpacking-free refractory ladle lining structure according to claim 8 is characterized in that: The first abutting portion includes a first abutting plane (901), and the first abutting plane (901) abuts against a top masonry brick (5012).

10. The unpacking-free refractory ladle lining structure according to claim 9, characterized in that: The slag line reserved area (401) includes a plurality of fourth masonry bricks (4011), and the fourth masonry bricks (4011) have the same structure as the first masonry bricks (4021); The fourth masonry brick (4011), the top masonry brick (5012) and the third masonry brick (5011) are made of magnesia carbon bricks; The first masonry brick (4021) and the second masonry brick (5021) are made of magnesium-aluminum-carbon bricks.

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