Anode carbon block group for 400kA electrolytic bath

Abstract

An anode carbon block group for a 400kA electrolytic cell relates to the technical field of electrolytic aluminum and comprises an aluminum guide rod, an explosive welding block, a steel claw and an anode carbon block, a rod head of the aluminum guide rod is welded with the head end of the steel claw through the explosive welding block, a rod body of the aluminum guide rod is welded with the head end of the steel claw through a reinforcing component, and the tail end of the steel claw is correspondingly connected with the anode carbon block; the anode carbon block group can be used for a long time in a 400kA high-current electrolytic tank, and is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum, in particular to an anode carbon block group for a 400kA electrolytic cell. Background Art

[0002] At present, aluminum foil, aluminum sheet and other products processed from aluminum are being widely used. The raw materials of these aluminum processed products are generally aluminum ingots, which are aluminum alloy blocks containing many impurities. Therefore, in order to finally obtain high-purity aluminum metal, electrolysis is required. Among them, the electrolytic cell is one of the important equipment in the electrolysis process. The electrolytic cell can extract metal ions from the aluminum ingot and reduce them to pure metal.

[0003] For 400kA electrolytic cells, the current passing through is higher, but the anode carbon blocks are generally smaller in size for easier removal and replacement. Although this allows for easier removal, there are still problems such as a shorter replacement cycle, high additional voltage during each anode change, and more manual intervention in the electrolytic cell, which increases manual operation costs and high electrolytic cell power consumption, making it difficult to meet production needs.

[0004] Traditionally, inert anode carbon blocks are used to replace carbon roasted anode carbon blocks. However, due to the poor thermal stability and strength of inert anode carbon blocks, the production cost is high, the manufacturing is difficult, and they cannot directly replace carbon anode carbon blocks, so they cannot be used on a large scale.

[0005] A Chinese patent (CN103966629A) discloses an anode carbon block assembly for an aluminum electrolytic cell. By leaving gaps between the aluminum guide rod, explosive welding block, and steel claws in the anode carbon block guide rod assembly, the anode carbon block can be prevented from being broken due to excessive stress during operation. However, in this patent, the aluminum guide rod and the steel claw are connected only by welding, and the steel claw and the anode carbon block are connected by a mating plug-in method. Therefore, when the carbon block assembly is removed, the plug-in points of the steel claw and the anode carbon block, as well as the welds of the aluminum guide rod and the steel claw, are concentrated stress points and are subjected to high stress. Therefore, it is still impossible to use anode carbon blocks of larger sizes.

[0006] Therefore, we propose an anode carbon block assembly that can be used for a long time in a 400kA high current electrolytic cell and is easy to replace. Utility Model Content

[0007] In order to overcome the deficiencies in the background technology, the utility model discloses an anode carbon block assembly for a 400kA electrolytic cell.

[0008] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

[0009] An anode carbon block assembly for a 400kA electrolytic cell comprises an aluminum guide rod, an explosive welding block, a steel claw, and an anode carbon block. The rod head of the aluminum guide rod is welded to the head end of the steel claw via the explosive welding block, and the rod body of the aluminum guide rod is welded to the head end of the steel claw via a reinforcement component. The tail end of the steel claw is correspondingly connected to the anode carbon block.

[0010] Preferably, the reinforcing component includes a fixing rod and a reinforcing welding block, wherein the fixing rod is vertically arranged on the top of the steel claw; the reinforcing welding block is installed on the top of the fixing rod and is welded to the rod body of the aluminum guide rod.

[0011] Preferably, the top surface of the anode carbon block is provided with a plurality of mounting grooves for welding with steel claws, and guide rods are provided in the mounting grooves.

[0012] Preferably, the guide rod is arranged at an angle.

[0013] Preferably, the included angle A between the guide rod and the bottom surface of the mounting groove is 73-76°.

[0014] Preferably, the cross section of the mounting groove is a circle with missing corners.

[0015] Preferably, the missing corners of the missing corner circle are multiple and evenly distributed.

[0016] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0017] The utility model discloses an anode carbon block assembly for a 400kA electrolytic cell. 1. The connection strength between the aluminum guide rod and the steel claw can be improved by a reinforcement component, thereby improving the overall structural strength of the anode carbon block assembly. This can also support thicker and heavier anode carbon blocks, reduce the frequency of anode carbon block replacement in the electrolytic cell, and improve the working efficiency of the 400kA electrolytic cell.

[0018] 2. By setting a guide rod in the installation groove, the connection strength between the installation groove and the steel claw after welding can be improved, making the welding between the steel claw and the anode carbon block more secure;

[0019] 3. The missing corner circle can fill more phosphorus pig iron between the steel claw and the mounting groove when they are welded, thereby improving the firmness of the two after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of the utility model;

[0021] Figure 2 Schematic diagram of the structure of the anode carbon block;

[0022] Figure 3 A schematic diagram of the structure of the installation slot.

[0023] In the figure: 1. Aluminum guide rod; 2. Explosion welding block; 3. Reinforcement component; 31. Fixing rod; 32. Reinforcement welding block; 4. Steel claw; 5. Anode carbon block; 51. Mounting slot; 6. Guide rod. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, these are merely corresponding to the drawings of the present invention and are for the convenience of describing the present invention. They do not indicate or imply that the devices or components referred to must have a specific direction.

[0025] Example 1 is:

[0026] Combined with attachment Figure 1 The anode carbon block assembly for a 400kA electrolytic cell comprises an aluminum guide rod 1, an explosive welding block 2, a steel claw 4, and an anode carbon block 5. The head of the aluminum guide rod 1 is welded to the head end of the steel claw 4 via the explosive welding block 2, and the body of the aluminum guide rod 1 is welded to the head end of the steel claw 4 via a reinforcement component 3. The tail end of the steel claw 4 is correspondingly connected to the anode carbon block 5.

[0027] The explosive welding block 2 is flat, and the top of the explosive welding block 2 needs to be cleaned with a steel brush before welding, and then the aluminum guide rod 1 is placed on it, and finally flux is arranged at the connection between the aluminum guide rod 1 and the explosive welding block 2, and the two are welded under a high temperature environment; and before welding, the bottom of the explosive welding block 2 and the head end of the steel claw 4 need to be pressed tightly before welding, and then welding can ensure that the welding connection between the aluminum guide rod 1, the explosive welding block 2 and the steel claw 4 is more firm;

[0028] In addition, the steel claw 4 includes a cross bar, and a plurality of cylindrical connecting blocks are evenly arranged along the length direction at the bottom of the cross bar, wherein the middle part of the cross bar is welded to the explosion welding block 2, and the plurality of cylindrical connecting blocks respectively correspond to the plurality of mounting grooves 51 on the top of the anode carbon block 5. In this way, when the anode carbon block 5 is pulled, the plurality of cylindrical connecting blocks can effectively disperse the force, thereby reducing the gravity on the aluminum guide rod 1 during the process of pulling the anode carbon block 5.

[0029] Example 2 is:

[0030] Based on Example 1, the reinforcing component 3 is further defined, wherein the reinforcing component 3 includes a fixing rod 31 and a reinforcing welding block 32, wherein the fixing rod 31 is vertically arranged on the top of the steel claw 4; the reinforcing welding block 32 is installed on the top of the fixing rod 31 and is welded to the rod body of the aluminum guide rod 1; wherein the fixing rod 31 and the reinforcing welding block 32 form an L-shape, and after the reinforcing welding block 32 and the aluminum guide rod 1 are welded, the firmness of the connection between the aluminum guide rod 1 and the steel claw 4 can be further improved;

[0031] It should also be noted that the welding process between the reinforcement welding block 32 and the aluminum guide rod 1 is carried out after the welding process between the aluminum guide rod 1, the explosion welding block 2 and the steel claw 4, in order to strengthen the connection strength between the aluminum guide rod 1 and the steel claw 4.

[0032] Example 3 is:

[0033] On the basis of Example 1, combined with the attached Figure 2 , the anode carbon block 5 is further defined, wherein the top surface of the anode carbon block 5 is provided with a plurality of mounting grooves 51 for welding with the steel claws 4, and a guide rod 6 is provided in the mounting groove 51; accordingly, a socket corresponding to the guide rod 6 is also provided in the cylindrical connecting block of the steel claw 4. Since the diameter of the cylindrical connecting block itself is smaller than the diameter of the mounting groove 51, when the cylindrical connecting block is installed in the mounting groove 51, it can be smoothly inserted according to the guidance of the guide rod 6, and then phosphorus pig iron is filled between the cylindrical connecting block and the mounting groove 51. After the phosphorus pig iron is melted by high temperature, the welding connection between the cylindrical connecting block and the mounting groove 51 is realized, which reflects the guiding role of the guide rod 6.

[0034] As needed, the guide rod 6 is tilted, and the included angle A between the guide rod 6 and the bottom surface of the mounting groove 51 is 73-76°. The tilted guide rod 6 can effectively enhance the connection strength between the cylindrical connecting block and the mounting groove 51. When the guide rod 6 is in the tilted state, the force relationship between the cylindrical connecting block and the guide rod 6 will change. That is, when the user lifts the anode carbon block 5 by the aluminum guide rod 1, the cylindrical connecting block will generate a corresponding pulling force on the guide rod 6, thereby further enhancing the connection strength between the cylindrical connecting block and the mounting groove 51.

[0035] It should be noted that the optimal angle A between the guide rod 6 and the bottom surface of the installation groove 51 is 75°. In this state, the guide rod 6 can take into account both the pulling force on the cylindrical connecting block and the connection strength between itself and the bottom of the installation groove 51.

[0036] Example 4 is:

[0037] On the basis of Example 3, combined with the attached Figure 3 , further defining the mounting groove 51, wherein the cross-section of the mounting groove 51 is a missing corner circle, which is a circle with missing corners, and the missing corner part is reflected in the mounting groove 51 as a vertical groove. Compared with the circular mounting groove 51, the mounting groove 51 of this shape can accommodate more phosphorus pig iron, and the contact area between the phosphorus pig iron as a welding agent and the mounting groove 51 is also larger, thereby correspondingly improving the connection strength between the mounting groove 51 and the cylindrical connecting block; in particular, the missing corners of the missing corner circle are evenly distributed, further increasing the contact area between the phosphorus pig iron and the mounting groove 51, thereby improving the connection strength between the mounting groove 51 and the cylindrical connecting block.

[0038] In addition, it should be noted that since the connection strength between the various structures of the anode carbon block group has been significantly improved, the anode carbon blocks 5 in the anode carbon block group can be made of larger specifications during implementation, such as anode carbon blocks 5 with a thickness of 740 mm and a length and width of 660 mm and 635 mm respectively, which are traditional. Large-sized anode carbon blocks 5 can have a longer service life in the 400kA electrolytic cell, reduce the replacement cycle of the anode carbon blocks 5 of the 400kA electrolytic cell, and reduce the additional voltage when replacing the anode carbon blocks 5. In addition, the high connection strength of the anode carbon block group also makes it easier to remove the anode carbon blocks 5, thereby improving the replacement efficiency of the anode carbon blocks 5.

[0039] When implementing the anode carbon block assembly for a 400kA electrolytic cell described in the utility model, the aluminum guide rod 1 is first fixedly connected to the top of the steel claw 4 through the explosive welding block 2, then the reinforcement welding block 32 is welded to the rod body of the aluminum guide rod 1, and finally the steel claw 4 is welded to the anode carbon block 5 to form the anode carbon block assembly as a whole.

[0040] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

Claims

1. An anode carbon block assembly for a 400kA electrolytic cell, characterized by: The invention comprises an aluminum guide rod (1), an explosive welding block (2), a steel claw (4) and an anode carbon block (5), wherein the rod head of the aluminum guide rod (1) is welded to the head end of the steel claw (4) through the explosive welding block (2), and the rod body of the aluminum guide rod (1) is welded to the head end of the steel claw (4) through a reinforcing component (3), and the tail end of the steel claw (4) is correspondingly connected to the anode carbon block (5); the reinforcing component (3) comprises a fixing rod (31) and a reinforcing welding block (32), wherein the fixing rod (31) is vertically arranged on the top of the steel claw (4); the reinforcing welding block (32) is installed on the top of the fixing rod (31) and is correspondingly welded to the rod body of the aluminum guide rod (1); The top surface of the anode carbon block (5) is provided with a plurality of mounting grooves (51) for welding with the steel claws (4), and guide rods (6) are provided in the mounting grooves (51); the guide rods (6) are arranged at an angle.

2. The anode carbon block assembly for a 400kA electrolytic cell according to claim 1, wherein: The included angle A between the guide rod (6) and the bottom surface of the mounting groove (51) is 73-76°.

3. The anode carbon block assembly for a 400kA electrolytic cell according to claim 2, wherein: The cross section of the mounting groove (51) is a missing-corner circle.

4. The anode carbon block assembly for a 400kA electrolytic cell according to claim 3, wherein: The missing corners of the missing corner circle are multiple and evenly distributed.

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