Anode center joint cover plate structure of aluminum electrolysis cell

Abstract

The utility model discloses an anode center joint cover plate structure of an aluminum electrolysis cell, relates to the technical field of electrolytic aluminum, and mainly aims to improve the durability of a center joint cover plate. According to the main technical scheme, the aluminum electrolysis cell anode center joint cover plate structure comprises a supporting plate body and a heat insulation plate body, the opposite side edges of the supporting plate body are bent downwards to form clamping grooves. And the opposite side edges of the heat insulation plate body are respectively inserted into the clamping grooves.

Description

Technical Field

[0001] This utility model relates to the field of aluminum electrolysis technology, and in particular to a structure for anode seam cover plate in an aluminum electrolysis cell. Background Technology

[0002] During the start-up process of the aluminum electrolysis cell, only half of the material is usually loaded into the gap between the two rows of anode carbon blocks. The upper part of the gap is covered with a cover plate to prevent other materials from being transferred into the gap. Since the temperature of the gap can reach more than 1000℃ during the roasting process, the gap cover plate is made of silicate or steel.

[0003] When using silicate cover plates, the thickness should be greater than 50mm. When the temperature is higher than 1000℃, they will become brittle. During the start-up of the aluminum electrolysis cell or when the silicate cover plate is removed, it will break and fall into the electrolysis cell, resulting in an increase in silicon content. Moreover, the reuse rate is less than 20%, which is a serious waste.

[0004] When using steel cover plates, the thickness must be greater than 10mm. After each use, the deformation is significant, requiring a large amount of maintenance before the next use, and the plate must be scrapped after a maximum of four uses.

[0005] In summary, the existing center seam cover plate has a high breakage rate, requires repair, and affects the quality of primary aluminum in the electrolytic cell. Utility Model Content

[0006] In view of this, the present invention provides a structure for the center seam cover plate of the anode of an aluminum electrolytic cell, the main purpose of which is to improve the durability of the center seam cover plate.

[0007] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0008] This utility model provides a structure for a central seam cover plate of an anode in an aluminum electrolysis cell, which includes: a support plate and a heat insulation plate.

[0009] The opposite sides of the support plate are bent downwards to form a groove;

[0010] The opposite sides of the heat insulation panel are respectively inserted into the slot.

[0011] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0012] Optionally, it also includes fixing bolts, which pass through the upper side wall of the slot and the heat insulation plate in sequence, and are threaded to the lower side wall of the slot.

[0013] Optionally, it also includes two edge insulation layers, each of which has one side fixedly connected to the lower surface of the insulation plate and the other side extending to the upper sidewall of the slot.

[0014] Optionally, a lifting ring is also included, which is fixedly connected to the upper surface of the support plate.

[0015] By employing the above technical solution, this utility model has at least the following advantages:

[0016] During the start-up and heating process of the aluminum electrolysis cell, this structure is used to overlap the lower sidewalls of the two slots with the upper surfaces of the opposite sides of the two rows of anode carbon blocks, so that the support plate supports the heat insulation plate. At the same time, the heat insulation plate prevents the heat from the seam of the aluminum electrolysis cell from spreading outward and can also slow down the thermal deformation of the support plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an aluminum electrolysis cell;

[0018] Figure 2 This is a schematic diagram of the assembly structure of an aluminum electrolytic cell anode seam cover plate provided in an embodiment of the present invention;

[0019] Figure 3 This is a structural disassembly diagram of an aluminum electrolysis cell anode seam cover plate structure provided in an embodiment of the present invention.

[0020] The reference numerals in the accompanying drawings include: 1. Support plate, 2. Slot, 3. Heat insulation plate, 4. Fixing bolt, 5. Edge heat insulation layer, 6. Lifting ring, 7. Anode carbon block. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 2 and Figure 3 As shown, an embodiment of this utility model provides an aluminum electrolytic cell anode seam cover structure, which includes: a support plate 1 and a heat insulation plate 3;

[0024] The opposite sides of the support plate 1 are bent downward to form a groove 2;

[0025] The opposite sides of the heat insulation plate 3 are respectively inserted into the slot 2.

[0026] The working process of the anode seam cover plate structure in aluminum electrolysis cells is as follows:

[0027] like Figure 1 As shown, during the start-up and heating process of the aluminum electrolysis cell, this structure is used to overlap the lower sidewalls of the two slots 2 with the upper surfaces of the opposite sides of the two rows of anode carbon blocks 7, so that the support plate 1 supports the heat insulation plate 3, avoiding the disadvantages of the heat insulation plate 3 having low structural strength and being easily broken. At the same time, the heat insulation plate 3 prevents the heat from spreading outward from the seam of the aluminum electrolysis cell and can also slow down the thermal deformation of the support plate 1. The combined structure of the support plate 1 and the heat insulation plate 3 improves the durability of this structure.

[0028] This structure can be disassembled at any time according to the needs of aluminum electrolysis cell production.

[0029] Specifically, the support plate 1 is made of 5mm thick 304 steel plate, and the heat insulation plate 3 is made of asbestos board.

[0030] In a specific embodiment, a fixing bolt 4 is also included. The fixing bolt 4 passes through the upper side wall of the slot 2 and the heat insulation plate 3 in sequence, and is threaded to the lower side wall of the slot 2.

[0031] In this embodiment, specifically, the fixing bolt 4 passes through the upper side wall of the slot 2 and the heat insulation plate 3, and is threaded to the lower side wall of the slot 2, fixing the opposite sides of the heat insulation plate 3 into the slot 2 respectively, preventing the middle part of the heat insulation plate 3 from sinking downward, improving the stability of the structure, and preventing the heat insulation material from falling into the electrolytic cell.

[0032] In a specific embodiment, it also includes two edge heat insulation layers 5, one side of each edge heat insulation layer 5 is fixedly connected to the lower surface of the heat insulation plate 3, and the other side extends to the upper side wall of the slot 2.

[0033] In this embodiment, specifically, the edge insulation layer 5 and the insulation plate 3 are integrally formed and are both made of asbestos. The other side of the edge insulation layer 5 extends to the upper side wall of the slot 2. The fixing bolt 4 passes through the edge insulation layer 5, the upper side wall of the slot 2, and the insulation plate 3 in sequence, and is threaded to the lower side wall of the slot 2.

[0034] When this structure is placed in the anode seam of the electrolytic cell, the edge heat insulation layer 5 contacts the upper end face of the anode carbon block 7, further reducing the degree of heat deformation of the slot 2.

[0035] In a specific embodiment, a lifting ring 6 is also included, which is fixedly connected to the upper surface of the support plate 1.

[0036] In this embodiment, specifically, the lifting ring 6 is hooked onto the crane hook to vertically lift the structure, avoiding horizontal pulling of the structure and preventing damage to the edge insulation layer 5 due to horizontal friction.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A structure for a central seam cover plate of the anode in an aluminum electrolysis cell, characterized in that, include: A support plate, wherein the opposite sides of the support plate are bent downward to form a groove; The heat insulation panel has its opposite sides inserted into the slots.

2. The aluminum electrolytic cell anode seam cover plate structure according to claim 1, characterized in that, It also includes fixing bolts, which pass through the upper side wall of the slot and the heat insulation plate in sequence, and are threaded to the lower side wall of the slot.

3. The aluminum electrolytic cell anode seam cover plate structure according to claim 2, characterized in that, It also includes two edge insulation layers, each of which has one side fixedly connected to the lower surface of the insulation plate and the other side extending to the upper sidewall of the slot.

4. The aluminum electrolytic cell anode seam cover plate structure according to any one of claims 1 to 3, characterized in that, It also includes a lifting ring, which is fixedly connected to the upper surface of the support plate.

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