Anode baking furnace cross wall and flue reinforcement structure

Abstract

This invention discloses a reinforcement structure for the transverse wall and fire channel of an anode roasting furnace, relating to the field of anode roasting furnace technology. It includes end brickwork, support columns, a furnace bottom raft plate, reinforcement, upper brickwork, and a fire channel. The support columns are installed on the furnace bottom raft plate, and both the support columns and the furnace bottom raft plate are integrally cast from high-strength heat-resistant concrete. The reinforcement is located inside the support columns and the furnace bottom raft plate, and the reinforcement in the support columns is fixedly connected to the reinforcement in the furnace bottom raft plate. The upper brickwork is located at the top of the support columns. This invention, by setting reinforced high-strength heat-resistant concrete support columns inside the transverse wall, with their bottoms cast to the furnace bottom raft plate, and side and end slots respectively fitting into the fire channel and end brickwork, forms a stable overall frame. This significantly enhances the ability to resist high-temperature thermal stress and material lateral thrust, avoiding defects such as transverse wall cracking, fire channel displacement, lateral bending, and corner cracking.

Description

Technical Field

[0001] This invention relates to the field of anode baking furnace technology, specifically to a reinforcement structure for the transverse wall and fire channel of an anode baking furnace. Background Technology

[0002] Currently, large open-type anode baking furnaces are widely used in the domestic aluminum carbon industry for the production of prebaked anodes. These baking furnaces typically feature a large number of feed boxes and a large span of transverse walls. In actual cyclic production processes, the baking furnace is constantly exposed to high temperatures and subjected to complex physical and thermal stresses.

[0003] Specifically, existing anode roasting furnaces generally suffer from the following technical defects: under the combined effects of high-temperature thermal stress and the lateral thrust generated by the filling material in the furnace, the large-span transverse wall structure is prone to cracking and deformation; at the same time, the fire channel wall connected to the transverse wall often experiences displacement and lateral bending, resulting in changes in the shape of the fire channel and affecting the uniformity of the temperature field distribution; in addition, the corner area of ​​the material box often cracks due to stress concentration, causing material leakage. Summary of the Invention

[0004] To address the aforementioned shortcomings of the prior art, this invention provides a reinforced structure for the transverse wall and fire channel of an anode roasting furnace, thereby resolving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reinforced structure for the transverse wall and fire passage of an anode roasting furnace, comprising end brickwork, support columns, a furnace bottom raft plate, reinforcement, upper brickwork, and fire passage. The support columns are disposed on the furnace bottom raft plate, and the support columns and the furnace bottom raft plate are integrally cast using high-strength heat-resistant concrete. The reinforcement is disposed inside the support columns and the furnace bottom raft plate, and the reinforcement inside the support columns and the reinforcement inside the furnace bottom raft plate are fixedly connected. The upper brickwork is disposed on the top of the support columns, and a fire passage with a top opening is provided at the center of the upper brickwork. A side groove is vertically provided at the center of the front and rear side walls of the support columns. The fire passage is disposed between two adjacent support columns, and both ends of the fire passage are embedded in the side grooves. An end groove is vertically provided at the center of the left and right ends of the support columns, and the end brickwork is embedded in the end groove.

[0006] Preferably, the upper brickwork is constructed on the upper part of the support column through a mortise and tenon joint structure.

[0007] Preferably, the high-strength heat-resistant concrete is bauxite cement refractory concrete, with high-alumina bauxite clinker as aggregate and bauxite cement as binder.

[0008] Preferably, the reinforcement adopts a cage-like structure.

[0009] Preferably, the reinforcement is made of heat-resistant steel bars.

[0010] This invention provides a reinforced structure for the transverse wall and fire channel of an anode baking furnace, which has the following beneficial effects: 1. This invention establishes a stable overall frame by setting high-strength heat-resistant concrete support columns inside the transverse wall, with the support columns containing reinforced structures. At the same time, the bottom of the support column is cast with the furnace bottom raft plate, and the side and end slots reserved on the support column are reliably fitted with the fire channel and the end brickwork, respectively. This significantly enhances the ability of the transverse wall and fire channel to resist high-temperature thermal stress and material lateral thrust, avoiding defects such as transverse wall cracking, fire channel displacement and lateral bending, and corner area cracking. 2. The reinforced structure and integrated casting in this invention effectively suppress long-term displacement and fatigue damage of the column, greatly extending the overall service life of the roasting furnace; at the same time, the reliable positioning of the fire channel ensures a uniform temperature field inside the furnace, so that the carbon blocks are heated evenly according to the predetermined roasting curve, improving the consistency of roasting quality of anode products. Attached Figure Description

[0011] Figure 1 This is a front view of a reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to the present invention; Figure 2 This is a top cross-sectional view of a reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to the present invention; Figure 3 This is a top view of the support column in this invention.

[0012] In the diagram: 1. Fire passage; 2. Upper brickwork; 3. Reinforcement; 4. Support column; 5. Furnace bottom raft plate; 6. Side slot; 7. End slot; 8. End brickwork; 9. Fire channel; 10. Mother-daughter joint structure. Detailed Implementation

[0013] 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.

[0014] The present invention will now be described in detail through specific embodiments, as follows: According to the instruction manual Figures 1-3As can be seen, the present invention discloses a reinforcement structure for the transverse wall and fire passage of an anode roasting furnace. During construction, the supporting columns 4 and the furnace bottom raft plate 5 are constructed first. Reinforcing bars 3 are pre-fabricated at the positions of the supporting columns 4 and the furnace bottom raft plate 5 to form a framework. The reinforcing bars 3 of the supporting columns 4 and the furnace bottom raft plate 5 are connected together, which can be done by binding. They are integrally cast using high-strength heat-resistant concrete. During casting, side grooves 6 are vertically left at the center of the front and rear side walls of the supporting columns 4, and end grooves 7 are vertically left at the center of the left and right ends of the supporting columns 4. Then, the fire passage 9 is constructed between adjacent supporting columns 4 using a masonry method. The two ends of the fire passage 9 are embedded in the side grooves 6. End brickwork 8 and transverse walls are constructed at the left and right ends of the supporting columns 4 using a masonry method. The end brickwork 8 and transverse walls are built together, and the end brickwork 8 is embedded in the end grooves 7 of the supporting columns 4. Finally, an upper brickwork 2 is constructed on top of the supporting columns 4, and a fire passage 1 is left at the center of the upper brickwork 2, with an opening at the top of the fire passage 1. In this invention, the end brickwork 8, support columns 4, furnace bottom raft plate 5, and fire channel 9 form a stable overall frame, significantly enhancing the ability of the transverse walls and fire channel 9 to resist high-temperature thermal stress and material lateral thrust, thus avoiding defects such as transverse wall cracking, fire channel 9 displacement and lateral bending, and corner area cracking. The reinforced structure and integrated casting in this invention effectively suppress long-term displacement and fatigue damage of the columns, greatly extending the overall service life of the roasting furnace. Simultaneously, the reliable positioning of the fire channel ensures a uniform temperature field within the furnace, allowing the carbon blocks (products) to be heated uniformly according to the predetermined roasting curve, improving the consistency of the roasting quality of the anode products.

[0015] The upper brickwork 2 is built on the upper part of the support column 4 through the mortise and tenon structure 10. The mortise and tenon structure 10 is existing technology, which can cast a protrusion on the top of the support column 4 to limit the lateral movement of the upper brickwork 2.

[0016] Among them, high-strength heat-resistant concrete uses bauxite cement refractory concrete, with high-alumina bauxite clinker as aggregate and bauxite cement as binder. Bauxite cement refractory concrete has excellent high-temperature performance, good mechanical properties, convenient construction, and abundant raw materials.

[0017] Among them, reinforcement 3 adopts a cage structure. The steel cage mainly plays a tensile role, which can effectively make up for the low tensile strength of concrete. At the same time, it forms a constraint on the core concrete and its mechanical properties are significantly improved compared with ordinary steel bars.

[0018] Among them, reinforcement 3 uses heat-resistant steel bars, which are sufficient in quantity and can delay the heat transfer and oxidation damage of steel bars caused by high temperature.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcement structure for the transverse wall and fire channel of an anode baking furnace, characterized in that, The structure includes end brickwork (8), support columns (4), furnace bottom raft (5), reinforcement (3), upper brickwork (2), and flue (9). The support columns (4) are installed on the furnace bottom raft (5), and the support columns (4) and the furnace bottom raft (5) are integrally cast using high-strength heat-resistant concrete. The reinforcement (3) is installed inside the support columns (4) and the furnace bottom raft (5). The internal reinforcement (3) and the internal reinforcement (3) of the furnace bottom raft plate (5) are fixedly connected. The upper brick masonry (2) is set on the top of the support column (4), and the upper brick masonry (2) has a fire passage (1) with a top opening at the center. The support column (4) has a side slot (6) vertically opened at the center of the front and rear side walls. The fire channel (9) is set between two adjacent support columns (4), and the two ends of the fire channel (9) are embedded in the side slot (6). The support column (4) has an end slot (7) vertically opened at the center of the left and right ends. The end brick masonry (8) is embedded in the end slot (7).

2. The reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to claim 1, characterized in that, The upper brickwork (2) is built on the upper part of the support column (4) through the mortise and tenon structure (10).

3. The reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to claim 1, characterized in that, The high-strength heat-resistant concrete is made of alumina cement refractory concrete, with high-alumina alumina clinker as aggregate and alumina cement as binder.

4. The reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to claim 1, characterized in that, The reinforcement (3) adopts a cage-like structure.

5. The reinforcement structure for the transverse wall and fire channel of an anode baking furnace according to claim 1, characterized in that, The reinforcement (3) is made of heat-resistant steel bars.

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