Heat accumulating type slab heating furnace wall structure and construction method thereof

Abstract

The invention discloses a heat accumulating type slab heating furnace wall structure and a construction method thereof.The furnace wall structure comprises an inner-layer steel plate and an outer-layer steel plate, the inner-layer steel plate and the outer-layer steel plate are attached and fixed in a welded mode, and a combined structure of the inner-layer steel plate and the outer-layer steel plate is fixed to the top of a water tank in a full-length welding mode; the heating furnace wall structure is sequentially provided with a heat insulation layer, a separation wall and an inner pouring layer from the inner-layer steel plate to the inner side, and an outer pouring layer is arranged on the outer side of the outer-layer steel plate. By means of the layout, the weight of the furnace wall is reduced, anchoring nails on the inner side of the furnace wall are enlarged and thickened, the hanging bricks are reasonably and evenly distributed, the firmness between the castable and the water tank and between the castable and the steel plate is improved, the falling probability of refractory materials is reduced, and the situation that the water tank is heated and pressed to deform, displace and collapse in the past is avoided; even if the furnace pressure blast furnace door is on fire, the internal steel plate layer cannot be burnt, the phenomenon that the furnace wall is burnt through is avoided, the heat insulation performance of the furnace wall is improved, heat loss is reduced, energy is saved, the safety in the working process is improved, and the service life of the furnace wall structure is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heating furnace, and particularly relates to a regenerative slab heating furnace wall structure and a construction method thereof. BACKGROUND

[0002] At present, the furnace wall of the heating furnace for loading steel in the hot coil slab second workshop is entirely cast by castable, and the outside is paved with steel plates and reinforced by I-shaped steel. This kind of heating furnace wall structure not only has large weight, but also has poor heat insulation performance. After long time use, the furnace wall is prone to cracking, which leads to problems such as fire running, burning, refractory falling, water tank deformation, displacement and collapse, and a series of safety hazards exist. Moreover, the furnace needs to be stopped for maintenance every year, which affects the production stability of the workshop.

[0003] Therefore, it is necessary to develop a regenerative slab heating furnace wall structure and a construction method thereof to solve the above problems. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a regenerative slab heating furnace wall structure and a construction method thereof. Two layers of steel plates are fully welded on the water tank, and heat insulation layers, isolation walls, inner pouring layers and outer pouring layers are arranged on both sides of the steel plates to increase the heat insulation performance of the furnace wall, reduce heat loss and save energy. The structure layout reduces the weight of the furnace wall, increases the thickness of the anchor nails on the inner side of the furnace wall, and reasonably and uniformly distributes the locations of the hanging bricks to increase the firmness between the castable and the water tank and the steel plate, so as to solve the deficiencies in the prior art.

[0005] The embodiment of the present application provides the following technical scheme: A regenerative slab heating furnace wall structure, comprising an inner layer of steel plates and an outer layer of steel plates, the inner layer of steel plates is attached to and welded with the outer layer of steel plates, and the combined structure of the inner layer of steel plates and the outer layer of steel plates is fully welded and fixed on the top of the water tank. The heating furnace wall structure is sequentially provided with a heat insulation layer, an isolation wall and an inner pouring layer from the inner layer of steel plates to the inner side. The outer side of the outer layer of steel plates is provided with an outer pouring layer. An anchor support frame is welded at the bottom end position of the side of the inner layer of steel plates away from the outer layer of steel plates, for bearing the heat insulation layer, the isolation wall and the inner pouring layer. A plurality of hanging bricks are installed on the inner layer of steel plates through connecting pieces, and the hanging bricks penetrate through the heat insulation layer and the isolation wall and extend to the inside of the inner pouring layer. An expansion joint is arranged on the inner pouring layer. In the initial pouring state, a corrugated board is embedded in the inner pouring layer.

[0006] Preferably, the heat insulation layer adopts high-purity ceramic fiber plates, and the high-purity ceramic fiber plates comprise a plurality of ceramic plate pieces which are stacked in the vertical direction, and the ceramic plate pieces are provided with through grooves corresponding to the hanging bricks or the anchor support frame.

[0007] Preferably, the partition wall is made of light-weight fireproof bricks and cement masonry, and the end of the corrugated board abuts against the outer wall of the partition wall.

[0008] Preferably, the number of the expansion joints is set to be multiple, and the expansion joints are vertically distributed through the inner pouring layer.

[0009] Preferably, the connecting piece comprises a straight rod plug and an assembly plate sleeve, the number of the assembly plate sleeves is twice the number of the hanging bricks, and every two assembly plate sleeves are symmetrically distributed on the two sides of the hanging bricks, the straight rod plug is inserted between the two assembly plate sleeves and passes through the through hole at the end of the hanging bricks, one side of the hanging bricks is arranged to be attached to the inner layer steel plate, and the assembly plate sleeve is welded to the inner layer steel plate.

[0010] Preferably, the connecting piece comprises a support plate sleeve and a Z-shaped plug, the support plate sleeve is welded to the inner layer steel plate, and one end of the Z-shaped plug is vertically inserted into the support plate sleeve, the other end of the Z-shaped plug is inserted into the through hole at the end of the hanging bricks, and one side of the hanging bricks is arranged to be attached to the inner layer steel plate after the insertion.

[0011] Preferably, the outer side of the hanging bricks is provided with a concave-convex structure, and the hanging bricks are connected to the corrugated board by a cable tie.

[0012] Preferably, the hanging bricks are integrally poured and fixed with the inner pouring layer, the through hole in the heat insulation layer and the partition wall corresponding to the hanging bricks has an inner diameter greater than the outer diameter of the hanging bricks, and the gap between the inner wall of the through hole and the hanging bricks is filled with thermal insulation cotton.

[0013] Preferably, the water tank is connected with small anchor nails on the outer side for connecting the formwork.

[0014] The application also provides a construction method of a furnace wall structure of a heat accumulating slab heating furnace, comprising the following steps: S1, full-welding furnace wall frame: the inner layer steel plate and the outer layer steel plate are attached and welded, the combined structure after welding is fixed on the top of the water tank, an anchor support frame is welded at the bottom of the inner layer steel plate, and a connecting piece is welded on the outer wall of the inner layer steel plate; S2, installing hanging brick array: the hanging bricks are attached and fixed on the inner layer steel plate by the connecting piece, and are arranged in sequence to form a hanging brick array; S3, stacking into heat insulation layer: ceramic plate pieces are tightly attached to the inner layer steel plate and are bonded, and are stacked in sequence from bottom to top to form a heat insulation layer, and a through slot corresponding to the hanging bricks or the anchor support frame is reserved on the heat insulation layer, so that a gap is formed between the through slot and the hanging bricks; S4, masonry into partition wall: light-weight fireproof bricks and cement are used to start masonry from bottom to top to form a wall structure, so that the partition wall is tightly attached to the heat insulation layer, and a through hole corresponding to the hanging bricks or the anchor support frame is reserved on the partition wall; S5. Laying corrugated boards and insulation cotton: Fill the gaps between the insulation layer and the partition wall and the hanging bricks with insulation cotton, then place the corrugated boards on one side of the partition wall and make the sides of the corrugated boards fit against the sides of the hanging bricks. Use cable ties to connect the corrugated boards to the hanging bricks. S6. Erecting the formwork and injecting refractory material: Erect the formwork at the end of the corrugated plate and on the outside of the water tank, and support it with small anchor nails. Reinforce it with iron wire. Form a cavity between the formwork, the water tank, and the isolation wall. Inject refractory material into the cavity so that the refractory material adheres to the outer steel plate, the isolation wall, and the outside of the water tank. S7. Removal of formwork after curing: After the refractory material has cured, all formwork is removed, forming an inner pouring layer on the inside of the isolation wall, an outer pouring layer on the outside of the outer steel plate, and a pouring protective layer on the outside of the water tank. S8. Melted Corrugated Sheet: When used in a high-temperature environment, the corrugated sheet melts, forming multiple expansion joints on the inner casting layer.

[0015] Compared with the prior art, the present invention has the following advantages: By fully welding two layers of steel plates onto the water tank and setting insulation layers, isolation walls, inner casting layers, and outer casting layers on both sides of the steel plates, the heat insulation performance of the furnace wall is increased, heat loss is reduced, and energy is saved. This structural layout reduces the weight of the furnace wall, increases and thickens the anchoring nails on the inner side of the furnace wall, and rationally and evenly distributes the hanging brick positions to increase the firmness between the castable material and the water tank and steel plates, reducing the probability of refractory material falling off. This avoids the occurrence of previous situations such as water tank deformation, displacement, and collapse due to heat and pressure. Even if the furnace pressure is high and the furnace door catches fire, it will not burn to the inner steel plate layer and cause the furnace wall to burn through. This improves the safety of the working process and extends the service life of the furnace wall structure.

[0016] By improving the functional layers and layout of the furnace wall structure of the regenerative slab heating furnace and using multiple sets of hanging bricks for reinforcement, the integration of the furnace wall structure is greatly improved. During subsequent use, the heat insulation performance is more stable, and there is no need for frequent furnace shutdowns to repair the furnace wall. The stability of workshop production is significantly improved, which is conducive to ensuring production efficiency.

[0017] The provided construction method allows for the orderly construction of the furnace wall structure of the regenerative slab heating furnace, which can effectively improve the integration of the furnace wall structure, reduce work errors, and eliminate the need to remove the corrugated plates, thus making full use of the materials. During the subsequent melting process, multiple expansion joints are automatically formed, making the construction efficient and convenient. Attached Figure Description

[0018] Figure 1 A partial perspective view of the furnace wall structure of the regenerative slab heating furnace provided by the present invention.

[0019] Figure 2 A top view of a partial section of the furnace wall structure of the regenerative slab heating furnace provided by the present invention.

[0020] Figure 3 For the present invention Figure 2 Three-dimensional view of the structure cut along the AA direction.

[0021] Figure 4 This is a schematic diagram of the structure of the inner casting layer and the outer casting layer before casting according to the present invention.

[0022] Figure 5 This is a schematic diagram of the connection structure between the connector, the hanging brick, and the inner steel plate provided in Embodiment 1 of the present invention.

[0023] Figure 6 This is a schematic diagram of the connection structure between the connector, the hanging brick, and the inner steel plate provided in Embodiment 2 of the present invention.

[0024] Figure 7 This is a schematic diagram of the disassembled structure of the connector and the hanging brick provided in Embodiment 1 of the present invention.

[0025] Figure 8 A schematic diagram of the ceramic plate structure provided for an embodiment of the heat insulation layer of the present invention.

[0026] Figure 9 This is a demonstration diagram of the construction process of the furnace wall structure of the regenerative slab heating furnace provided by the present invention.

[0027] Marked in the image: Inner steel plate-1; Outer steel plate-2; Water tank-3; Insulation layer-4; Isolation wall-5; Inner casting layer-6; Outer casting layer-7; Anchor support frame-8; Corrugated plate-9; Expansion joint-10; Connector-11; Hanging brick-12; Thermal insulation cotton-13; Small anchor nail-14; Template-15; Ceramic slab-401; Through groove-402; Straight rod pin-111; Assembly plate sleeve-112; Support plate sleeve-113; Z-type pin-114. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can refer to a detachable connection: it can be a mechanical connection; it can also be an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] like Figures 1-8 The furnace wall structure of a regenerative slab heating furnace shown includes an inner steel plate 1 and an outer steel plate 2. The inner steel plate 1 and the outer steel plate 2 are bonded and welded together, and the combined structure of the inner steel plate 1 and the outer steel plate 2 is fully welded to the top of the water tank 3. The furnace wall structure, from the inner steel plate 1 inwards, is provided with an insulation layer 4, an isolation wall 5, and an inner casting layer 6. An outer casting layer 7 is provided on the outer side of the outer steel plate 2. The combined structure of the inner steel plate 1 and the outer steel plate 2 is fully welded to the top of the water tank 3, and is isolated by the two steel plates. Lightweight refractory material is cast on the outer steel plate 2 to form the outer casting layer 7. This prevents deformation of the steel plate due to fire from the furnace door, reduces the total mass of the refractory material, reduces the stress on the anchor nails, reduces the probability of refractory material falling off, and extends its service life.

[0032] An anchor support frame 8 is welded at the bottom end of the inner steel plate 1 on the side away from the outer steel plate 2. This frame is used to support the heat insulation layer 4, the isolation wall 5, and the inner casting layer 6, thereby improving the load-bearing capacity and integration of the furnace wall structure.

[0033] Several hanging bricks 12 are installed on the inner steel plate 1 via connectors 11, and the hanging bricks 12 penetrate the insulation layer 4 and the isolation wall 5, extending into the inner casting layer 6. Specifically, after casting, a thin refractory covering layer is formed at the end of the hanging brick 12, and the hanging brick 12 is embedded in the inner casting layer 6 to form an integral structure.

[0034] An expansion joint 10 is provided on the inner casting layer 6. In the initial casting state, a corrugated plate 9 is embedded in the inner casting layer 6. The corrugated plate 9 is made of a material that can be melted at high temperatures, such as PC board. After the corrugated plate 9 in the inner casting layer 6 is melted at high temperatures, the expansion joint 10 is formed.

[0035] Furthermore, in the above scheme, the number of expansion joints 10 is set to multiple, and the expansion joints 10 penetrate the inner casting layer 6, with the expansion joints 10 distributed perpendicularly to the outer surface of the inner casting layer 6. The multiple through expansion joints 10 are wavy, breaking the inner casting layer 6 into multiple modules. This can prevent the problem of cracking caused by thermal expansion and contraction of the refractory material.

[0036] Furthermore, in the above scheme, the isolation wall 5 is constructed using lightweight refractory bricks and cement, and the ends of the corrugated sheet 9 abut against the outer wall of the isolation wall 5. Cement should also be used to fill the space between the isolation wall 5 and the insulation layer 4.

[0037] As a preferred embodiment of the connector 11 in this invention: the connector 11 includes a straight rod pin 111 and an assembly plate sleeve 112. The number of assembly plate sleeves 112 is twice the number of hanging bricks 12, and every two assembly plate sleeves 112 are symmetrically distributed on both sides of the hanging brick 12. The straight rod pin 111 is inserted between two assembly plate sleeves 112 and passes through the through hole at the end of the hanging brick 12. One side of the hanging brick 12 is fitted with the inner steel plate 1, and the assembly plate sleeve 112 is welded to the inner steel plate 1.

[0038] As another preferred embodiment of the connector 11 in the present invention: the connector 11 includes a support plate sleeve 113 and a Z-shaped pin 114. The support plate sleeve 113 is welded to the inner steel plate 1. One end of the Z-shaped pin 114 is vertically inserted into the support plate sleeve 113, and the other end of the Z-shaped pin 114 is inserted into the through hole at the end of the hanging brick 12. After insertion, one side of the hanging brick 12 is attached to the inner steel plate 1.

[0039] Furthermore, in the above scheme, the outer side of the hanging brick 12 is provided with a concave-convex structure, and the hanging brick 12 is connected to the corrugated plate 9 by cable ties.

[0040] Furthermore, in the above scheme, the hanging brick 12 is integrally cast and fixed with the inner pouring layer 6. The inner diameter of the through hole corresponding to the hanging brick 12 on the insulation layer 4 and the isolation wall 5 is larger than the outer diameter of the hanging brick 12, and the gap between the inner wall of the through hole and the hanging brick 12 is filled with thermal insulation cotton 13. The thermal insulation cotton 13 can be made of fire-resistant thermal insulation cotton composed of materials such as glass fiber, asbestos, and silicone rubber, which has good fire resistance, high strength, and high temperature resistance. By stuffing it into the gap between the inner wall of the through hole and the hanging brick 12, the sealing between the wall structural layers is achieved.

[0041] Furthermore, in the above scheme, small anchor nails 14 are connected to the outside of the water tank 3 for connecting the template 15. The template 15 can be made of wood or metal. After pouring, the pouring layer should completely cover the small anchor nails 14.

[0042] The present invention also provides, for example Figure 9The construction method of the furnace wall structure of a regenerative slab heating furnace shown includes the following steps: S1. Fully welded furnace wall frame: The inner steel plate 1 and the outer steel plate 2 are attached and welded together. The welded combined structure is fully welded and fixed to the top of the water tank 3. An anchor support frame 8 is further welded to the bottom of the inner steel plate 1, and a connector 11 is welded to the outer wall of the inner steel plate 1. In the embodiment provided by the present invention, the thickness of the inner steel plate 1 is slightly greater than the thickness of the outer steel plate 2.

[0043] S2. Installing an array of hanging bricks 12: The hanging bricks 12 are attached and fixed to the inner steel plate 1 using connectors 11, and arranged sequentially to form an array of hanging bricks 12. In the embodiment provided by this invention, multiple hanging bricks 12 at the same horizontal height are grouped together, and each group of hanging bricks 12 is arranged in a linear array, with adjacent groups of hanging bricks 12 staggered. The spacing between two adjacent hanging bricks 12 is controlled at 350*350mm. Increasing the firmness between the castable refractory and the water tank 3 and the steel plate can greatly reduce the probability of refractory material falling off and extend its service life.

[0044] S3. Stacking to form insulation layer 4: Ceramic plates 401 are tightly bonded to the inner steel plate 1 and stacked sequentially from bottom to top to form insulation layer 4. Through grooves 402 corresponding to the hanging bricks 12 or anchor support frames 8 are pre-reserved on the insulation layer 4, creating gaps between the through grooves 402 and the hanging bricks 12. In the embodiment provided by this invention, the thickness of the insulation layer 4 is close to the thickness of the inner steel plate 1. For example, it can be set to 50mm.

[0045] S4. Constructing the isolation wall 5: Using lightweight refractory bricks and cement, the wall structure is constructed from bottom to top to form the isolation wall 5, so that the isolation wall 5 is tightly attached to the heat insulation layer 4, and through holes corresponding to the hanging bricks 12 or the anchor support frame 8 are reserved on the isolation wall 5; In the embodiment provided by the present invention, the thickness of the isolation wall 5 is set to 114mm.

[0046] S5. Install corrugated board 9 and insulation cotton 13: Fill the gap between the insulation layer 4 and the partition wall 5 and the hanging brick 12 with insulation cotton 13, then place the corrugated board 9 on one side of the partition wall 5 and make the side of the corrugated board 9 fit against the side of the hanging brick 12. Use cable ties to connect the corrugated board 9 to the hanging brick 12; the cable ties can be made of iron wire or nylon.

[0047] S6. Erecting the formwork and injecting refractory material: Erect the formwork 15 at the end of the corrugated plate 9 and on the outside of the water tank 3, and support it with small anchor nails 14. Reinforce it with iron wire. Form a cavity between the formwork 15, the water tank 3, and the isolation wall 5. Inject refractory material into the cavity so that the refractory material adheres to the outer steel plate 2, the isolation wall 5, and the outside of the water tank 3. The refractory material can be corundum wear-resistant castable.

[0048] S7. Removal of Formwork 15 after Curing: After the refractory material has cured, all formwork 15 is removed, forming an inner casting layer 6 on the inside of the isolation wall 5, an outer casting layer 7 on the outside of the outer steel plate 2, and a casting protective layer on the outside of the water tank 3. After removing the formwork 15, the inner casting layer 6, the outer casting layer 7, and the outer surface of the casting protective layer can be shaped and modified. For example, to make the surface smoother.

[0049] S8, Melted Corrugated Sheet 9: When used in a high-temperature environment, the corrugated sheet 9 melts, forming multiple expansion joints 10 on the inner casting layer 6. No removal is required, making construction efficient and convenient.

[0050] The above are merely specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A regenerative slab heating furnace wall structure, comprising an inner steel plate (1) and an outer steel plate (2), wherein the inner steel plate (1) and the outer steel plate (2) are attached and welded together, and the combined structure of the inner steel plate (1) and the outer steel plate (2) is fully welded to the top of a water tank (3), characterized in that: The furnace wall structure of the heating furnace is provided with an insulation layer (4), an isolation wall (5) and an inner casting layer (6) in sequence from the inner steel plate (1) to the inside. The outer steel plate (2) is provided with an outer casting layer (7). An anchor support frame (8) is welded at the bottom end of the inner steel plate (1) away from the outer steel plate (2) to support the heat insulation layer (4), the isolation wall (5) and the inner casting layer (6). Several hanging bricks (12) are installed on the inner steel plate (1) through connectors (11), and the hanging bricks (12) penetrate the heat insulation layer (4) and the isolation wall (5) and extend into the inner casting layer (6); An expansion joint (10) is provided on the inner casting layer (6). In the initial casting state, a corrugated plate (9) is embedded in the inner casting layer (6).

2. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The heat insulation layer (4) is made of high-purity ceramic fiber board, and the high-purity ceramic fiber board includes multiple ceramic plates (401), which are stacked vertically in sequence, and the ceramic plates (401) are provided with through grooves (402) corresponding to the hanging bricks (12) or anchor support frames (8).

3. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The isolation wall (5) is constructed of lightweight refractory bricks and cement, and the ends of the corrugated board (9) abut against the outer wall of the isolation wall (5).

4. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The number of expansion joints (10) is set to multiple, and the expansion joints (10) penetrate the inner casting layer (6). The expansion joints (10) are distributed perpendicularly to the outer surface of the inner casting layer (6).

5. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The connector (11) includes a straight rod pin (111) and an assembly plate sleeve (112). The number of assembly plate sleeves (112) is twice the number of hanging bricks (12), and every two assembly plate sleeves (112) are symmetrically distributed on both sides of the hanging brick (12). The straight rod pin (111) is inserted between two assembly plate sleeves (112) and passes through the through hole at the end of the hanging brick (12). One side of the hanging brick (12) is fitted with the inner steel plate (1), and the assembly plate sleeve (112) is welded to the inner steel plate (1).

6. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The connector (11) includes a support plate sleeve (113) and a Z-shaped pin (114). The support plate sleeve (113) is welded to the inner steel plate (1). One end of the Z-shaped pin (114) is vertically inserted into the support plate sleeve (113). The other end of the Z-shaped pin (114) is inserted into the through hole at the end of the hanging brick (12). After insertion, one side of the hanging brick (12) is fitted against the inner steel plate (1).

7. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The outer side of the hanging brick (12) is provided with a concave-convex structure, and the hanging brick (12) is connected to the corrugated plate (9) by cable ties.

8. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: The hanging brick (12) is integrally cast and fixed with the inner casting layer (6). The inner diameter of the through hole corresponding to the hanging brick (12) on the heat insulation layer (4) and the isolation wall (5) is larger than the outer diameter of the hanging brick (12), and the gap between the inner wall of the through hole and the hanging brick (12) is filled with heat insulation cotton (13).

9. The furnace wall structure of a regenerative slab heating furnace according to claim 1, characterized in that: Small anchor nails (14) are connected to the outside of the water tank (3) for connecting the template (15).

10. A construction method for a regenerative slab heating furnace wall structure as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. Fully welded furnace wall frame: The inner steel plate (1) and the outer steel plate (2) are attached and welded together. The combined structure after welding is fully welded and fixed to the top of the water tank (3). Anchor support frame (8) is further welded to the bottom of the inner steel plate (1), and connector (11) is welded to the outer wall of the inner steel plate (1). S2, Add hanging brick (12) array: The hanging bricks (12) are attached and fixed to the inner steel plate (1) by means of connector (11), and arranged in sequence to form a hanging brick (12) array; S3, stacking into an insulation layer (4): use ceramic plates (401) to tightly adhere to the inner steel plate (1) and bond them together, stacking them from bottom to top to form an insulation layer (4). Reserve a through groove (402) on the insulation layer (4) that corresponds to the hanging brick (12) or the anchor support frame (8) so that a gap is formed between the through groove (402) and the hanging brick (12). S4. Constructing an isolation wall (5): Using lightweight refractory bricks and cement, the wall structure is constructed from bottom to top to form an isolation wall (5), so that the isolation wall (5) is tightly attached to the insulation layer (4), and through holes corresponding to the hanging bricks (12) or anchor support frame (8) are reserved on the isolation wall (5). S5. Install corrugated board (9) and insulation cotton (13): Fill the gap between the insulation layer (4) and the partition wall (5) and the hanging brick (12) with insulation cotton (13), then place the corrugated board (9) on one side of the partition wall (5) and make the side of the corrugated board (9) fit against the side of the hanging brick (12), and use cable ties to connect the corrugated board (9) to the hanging brick (12); S6. Erecting the formwork and injecting refractory material: Erect the formwork (15) at the end of the corrugated plate (9) and the outside of the water tank (3), and support it with small anchor nails (14). Reinforce it with iron wire. Form a cavity between the formwork (15), the water tank (3), and the isolation wall (5). Inject refractory material into the cavity so that the refractory material adheres to the outer steel plate (2), the isolation wall (5), and the outside of the water tank (3). S7. Remove the templates (15) after curing: After the refractory material is cured, remove all templates (15), form an inner pouring layer (6) on the inside of the isolation wall (5), form an outer pouring layer (7) on the outside of the outer steel plate (2), and form a pouring protective layer on the outside of the water tank (3). S8, Melting corrugated sheet (9): When used in a high-temperature environment, the corrugated sheet (9) melts, forming multiple expansion joints (10) on the inner casting layer (6).

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