Pre-baked anode and production mold

Abstract

The utility model provides a pre-cultured anode and relates to the technical field of electrolytic aluminum. The pre-culture anode comprises an anode body, a carbon bowl is arranged on the anode body, the carbon bowl comprises a bottom face and a side face, a limiting groove is formed in the side face of the carbon bowl, and when a steel claw is inserted into the carbon bowl, the limiting groove and the steel claw jointly form a limiting cavity surrounding the steel claw. Meanwhile, the utility model further provides a pre-culture anode production mold. The pre-culture anode production mold comprises a mold core and an air bag arranged outside the mold core in a sleeving mode. The mold core comprises a central air pipe, a first forming part is arranged outside the central air pipe, a bottom plate is arranged at the lower end of the central air pipe, and air holes are formed in the side wall of the central air pipe and located between the first forming part and the bottom plate. The air bag is located between the first forming part and the bottom plate and forms an air cavity together with the mold core, and the air cavity communicates with the center air pipe through the air hole. According to the prebaked anode and the production mold provided by the invention, the combination tightness of the steel claw and the carbon bowl can be enhanced, and the problem that the steel claw is loosened and even falls off in the transfer process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum, in particular to a prebaked anode and a production mold. Background Art

[0002] During the assembly stage of the electrolytic aluminum production process, molten phosphorus pig iron needs to be poured into the gap between the steel claw at the end of the anode guide rod and the carbon bowl of the pre-heated anode to connect them together to form a carbon block group.

[0003] However, due to thermal expansion and contraction, a gap is likely to form at the connection between the steel claw and the anode carbon bowl of the cooled carbon block assembly. This gap will extend and expand due to vibration and other reasons during the subsequent transportation of the carbon block assembly, causing the steel claw to loosen or even fall off. Utility Model Content

[0004] In response to the above problems, the present application provides a prebaked anode and a production mold that can enhance the tightness of the combination of the steel claws and the carbon bowl, thereby avoiding the problem of the steel claws loosening or even falling off during the reversing process.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A preheated anode comprises an anode body, on which a carbon bowl is arranged, the carbon bowl comprises a bottom surface and a side surface, a limiting groove is arranged on the side surface of the carbon bowl, and when a steel claw is inserted into the carbon bowl, the limiting groove and the steel claw together form a limiting cavity surrounding the steel claw.

[0007] Furthermore, the lower side surface of the limiting groove is flush with the bottom surface of the charcoal bowl.

[0008] Furthermore, a spiral chute is provided on the side surface of the charcoal bowl above the limiting groove, and the spiral chute is a through groove.

[0009] Furthermore, the side surface of the charcoal bowl is in a conical structure, and the diameter gradually decreases in the direction away from the opening.

[0010] Furthermore, a recessed portion is provided on the anode body, and the carbon bowl is provided on the bottom surface of the recessed portion.

[0011] A pre-baked anode production mold, comprising a mold core and an air bag sleeved outside the mold core;

[0012] The mold core comprises a central air pipe, a first molding portion is arranged outside the central air pipe, a bottom plate is arranged at the lower end of the central air pipe, and air holes are arranged on the side wall of the central air pipe between the first molding portion and the bottom plate;

[0013] The airbag is annular in structure and has an inner opening;

[0014] The airbag is located between the first molding part and the bottom plate, and the opening side of the airbag is sealed and connected to the first molding part and the bottom plate respectively. The airbag and the mold core together form an air cavity, and the air cavity is connected to the central air pipe through the air hole.

[0015] Furthermore, the lower side of the airbag is flush with the lower side of the bottom plate.

[0016] Furthermore, a spiral boss is provided on the outer side surface of the first forming portion.

[0017] Furthermore, the first forming portion has a conical structure.

[0018] The beneficial effects of the utility model are:

[0019] The prebaked anode provided in the embodiment of the present application is provided with a limiting groove on the side of the carbon bowl. When the steel claw is inserted into the carbon bowl, the limiting groove and the steel claw together form a limiting cavity surrounding the steel claw. During the pouring process of phosphorus pig iron, the phosphorus pig iron flows into the limiting cavity along the gap between the steel claw and the side wall of the carbon bowl, and forms a first connecting portion with an annular structure, which can enhance the tightness of the combination of the steel claw and the prebaked anode and prevent the carbon block group from loosening during the reverse transportation process.

[0020] At the same time, the present application also provides a production mold for producing the prebaked anode, and the carbon bowl can be processed by using the production mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a prebaked anode and a production mold provided in an embodiment of the present application;

[0022] Figure 2 A top view of a prebaked anode and a production mold provided in an embodiment of the present application;

[0023] Figure 3 for Figure 2 AA section view in;

[0024] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0025] Figure 5 An exploded view of a prebaked anode and a production mold provided in an embodiment of the present application;

[0026] Figure 6 Schematic diagram of the three-dimensional structure of the mold Figure 1 ;

[0027] Figure 7Schematic diagram of the three-dimensional structure of the mold Figure 2 ;

[0028] Figure 8 Schematic diagram of the three-dimensional structure of the mold core;

[0029] Fig. 9 is a cross-sectional view of the mold core;

[0030] Fig.10 is a cross-sectional view of the airbag;

[0031] Fig.11 is a cross-sectional view of a pre-heated anode;

[0032] Fig.12 for Fig.11 Schematic diagram of the enlarged structure of part B.

[0033] In the figure: 1, pre-heated anode; 11, anode body; 111, recessed portion; 12, carbon bowl; 121, limiting groove; 122, spiral chute; 13, limiting cavity; 14, gap;

[0034] 2. Production mold; 21. Mold core; 211. Central air pipe; 2111. Air hole; 212. First molding part; 2121. Card slot; 2122. Spiral boss; 213. Bottom plate; 2131. Second connecting hook; 22. Air bag; 221. Protrusion; 222. First connecting hook; 23. Air cavity;

[0035] 3. Steel claws. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application, and the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative work on the basis of the embodiments of the present application shall belong to the protection scope of the present application.

[0037] For the convenience of description, the coordinate system is defined as Figure 1 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0038] like Figure 1 , Figure 5 and Fig.11As shown, a preheated anode includes an anode body 11, and a carbon bowl 12 for accommodating a steel claw 3 is arranged on the anode body 11. As a specific implementation, a plurality of carbon bowls 12 are arranged on the upper side of the anode body 11 in this embodiment, and the plurality of carbon bowls 12 are arranged in a line in the horizontal direction. Exemplarily, four carbon bowls 12 are arranged on the anode body 11.

[0039] like Figure 5 , Fig.11 and Fig.12 As shown, the carbon bowl 12 includes a bottom surface and a side surface, and a limiting groove 121 in an annular structure is provided on the side surface of the carbon bowl 12. When the steel claw 3 is inserted into the carbon bowl 12, the limiting groove 121 and the steel claw 3 together form a limiting cavity 13 surrounding the steel claw 3.

[0040] During the pouring process of phosphorus pig iron, the phosphorus pig iron will flow into the limiting cavity 13 along the gap 14 between the steel claw 3 and the side of the carbon bowl 12 and form a first connection part with an annular structure. After pouring the phosphorus pig iron, although the characteristics of thermal expansion and contraction will also cause the generation of gaps, since the outer surface of the steel claw 3 is a smooth cylindrical surface, the stress is small relative to the limiting groove 121, so even if it cools and shrinks, a gap will be generated at the junction of the first connection part and the limiting groove 121 (there is stress concentration here, which makes it easier to generate a gap). That is, the first connection part will be tightly combined with the steel claw 3 to form a whole, which is equivalent to forming an annular limiting boss on the outside of the steel claw 3. The limiting boss can play a limiting role to prevent the pre-trained anode 1 from falling off the steel claw 3.

[0041] Here, although the characteristics of thermal expansion and contraction will also cause the generation of gaps, in fact, the existence of gaps will not really separate the first connecting part and the prebaked anode into two bodies. The two are still adhered, but some tiny gaps will be generated locally. In addition, even if it is considered that there is an extreme situation, that is, the first connecting part and the prebaked anode are separated into two bodies, under the action of their own gravity, the upper side of the limiting groove 121 will also be pressed tightly against the first connecting part. In this way, not only will the prebaked anode 1 not fall off the steel claw 3, but it can also ensure reliable contact between the prebaked anode 1 and the steel claw 3, avoiding the increase of voltage drop and affecting the conductive performance.

[0042] As a specific implementation, the lower side surface of the limiting groove 121 in this embodiment is flush with the bottom surface of the charcoal bowl 12. The charcoal bowl 12 is in the shape of a stepped hole as a whole, and includes a first hole segment and a second hole segment from bottom to top, and the diameter of the second hole segment is larger than the diameter of the first hole segment.

[0043] Furthermore, if Figure 5 , Fig.11 and Fig.12As shown, a plurality of spiral bevel grooves 122 are evenly distributed along the circumferential direction on the side surface of the carbon bowl 12 and located above the limiting groove 121, and the spiral bevel grooves 122 are through grooves, that is, the upper end of the spiral bevel groove 122 passes through the anode body 11 upward, and the lower end of the spiral bevel groove 122 extends to the limiting groove 121 and is connected to the limiting groove 121.

[0044] By providing the spiral chute 122 on the side of the carbon bowl 12, during the pouring process of the phosphorus pig iron, the phosphorus pig iron will flow into the spiral chute 122 and form the second connection part. Similarly, after pouring the phosphorus pig iron, although the characteristics of thermal expansion and contraction will also cause the generation of gaps, they will be concentrated at the junction of the second connection part and the spiral chute 122. In this way, the reliability and contact area of ​​the connection between the steel claw 3 and the pre-heated anode 1 can be further increased, and the pressure drop of the carbon block group can be reduced.

[0045] As a specific implementation, in this embodiment, six spiral inclined grooves 122 are evenly distributed along the circumferential direction on the side surface of the charcoal bowl 12 above the limiting groove 121 .

[0046] Preferably, the number of turns of the spiral chute 122 is preferably less than one turn. As a specific implementation, the number of turns of the spiral chute 122 in this embodiment is 1 / 20 turn.

[0047] Furthermore, if Fig.12 As shown, the side of the charcoal bowl 12 is in a conical structure, and the diameter gradually decreases in the direction away from the opening. When the steel claw 3 is inserted into the charcoal bowl 12, a gap 14 in a ring cone shape is formed between the steel claw 3 and the side of the charcoal bowl 12.

[0048] Furthermore, if Figure 5 and Fig.12 As shown, the anode body 11 is provided with recessed portions 111 corresponding to the steel claws 3 , and the carbon bowl 12 is arranged on the bottom surface of the recessed portions 111 .

[0049] In the process of prebaked anode production and molding, it is necessary to pour the anode paste (paste-like, poor fluidity) into the molding mold box, press the mold into the paste, and then vibrate the mold box to mold the entire anode carbon block. After molding is completed, the mold is pulled out. A prebaked anode adopts a special-shaped carbon bowl 12 structure with a large bottom size and a small upper size. Although it can prevent the steel claw 3 from loosening and falling off, if a conventional rigid mold is used, the mold cannot be demolded after molding during the prebaked anode molding process. Based on this, a prebaked anode production mold is provided.

[0050] like Figure 6 and Figure 7As shown, a pre-baked anode production mold includes a mold core 21 made of rigid material and an air bag 22 sleeved on the outside of the mold core 21.

[0051] like Figure 8 and Fig. 9 As shown, the mold core 21 includes a central air pipe 211, a first molding portion 212 is coaxially arranged outside the central air pipe 211, a bottom plate 213 is arranged at the lower end of the central air pipe 211, and the bottom plate 213 forms a blockage for the lower end opening of the central air pipe 211. An air hole 2111 is arranged on the side wall of the central air pipe 211 between the first molding portion 212 and the bottom plate 213.

[0052] As a specific implementation, in this embodiment, a plurality of air holes 2111 are evenly distributed along the circumferential direction on the side wall of the central air pipe 211 between the first forming portion 212 and the bottom plate 213 .

[0053] like Figure 7 and Fig.10 As shown, the airbag 22 is annular in structure and has an inner opening.

[0054] like Figure 3 , Fig. 9 and Fig.10 As shown, the airbag 22 is located between the first molding part 212 and the bottom plate 213, the upper part of the opening side of the airbag 22 is sealed and connected to the first molding part 212, and the lower part of the opening side of the airbag 22 is sealed and connected to the bottom plate 213. The airbag 22 and the mold core 21 together form an annular air cavity 23 surrounding the central air pipe 211, and the air cavity 23 is connected to the central air pipe 211 through the air hole 2111.

[0055] In the process of prebaked anode production and molding, after the paste is pressed into the mold, gas is filled into the air cavity 23 through the central air pipe 211 to expand the air bag 22 and serve as the second molding part for molding the limiting groove 121. Preferably, the inflation pressure of the air cavity 23 is not less than 40MPa. Then the mold box vibrates to mold the entire anode carbon block. After molding, the pressure is released to shrink the air bag 22, at which time the air bag 22 shrinks and softens, and then the entire production mold 2 can be pulled out.

[0056] As a specific implementation method, Figure 4 , Fig. 9 and Fig.10As shown, in this embodiment, the upper part of the opening side of the airbag 22 is provided with an annular protrusion 221 with a dovetail structure in cross section, and the lower side surface of the first molding portion 212 is provided with an annular groove 2121 that cooperates with the annular protrusion 221 around the central air pipe 211, and the annular protrusion 221 is inserted into the annular groove 2121.

[0057] As a specific implementation method, Figure 4 , Fig. 9 and Fig.10 As shown, in this embodiment, a first connecting hook portion 222 is provided at the lower portion of the opening side of the airbag 22, and a second connecting hook portion 2131 is provided on the outer cylindrical surface of the bottom plate 213, and the first connecting hook portion 222 and the second connecting hook portion 2131 are hooked and connected to each other.

[0058] Furthermore, if Figure 4 and Figure 7 As shown, the lower side of the airbag 22 is flush with the lower side of the bottom plate 213 .

[0059] Furthermore, if Figure 8 As shown, a plurality of spiral bosses 2122 are evenly distributed along the circumferential direction on the outer surface of the first forming part 212 , the upper side surface of the spiral boss 2122 is flush with the upper side surface of the first forming part 212 , and the lower side surface of the spiral boss 2122 is flush with the lower side surface of the first forming part 212 .

[0060] As a specific implementation, in this embodiment, six spiral bosses 2122 are evenly distributed along the circumferential direction on the outer surface of the first forming portion 212 .

[0061] Preferably, the number of turns of the spiral boss 2122 is preferably less than one turn. As a specific implementation, the number of turns of the spiral boss 2122 in this embodiment is 1 / 20 turn.

[0062] Furthermore, the first forming portion 212 is a conical structure with a smaller diameter at the lower end and a larger diameter at the upper end.

[0063] Other embodiments obtained by those skilled in the art by combining, splitting, reorganizing, etc. the embodiments of the present application on the basis of the embodiments provided in the present application do not exceed the protection scope of the present application.

[0064] The above specific implementation methods have detailed the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. That is, any modifications, equivalent substitutions, improvements, etc. made on the basis of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A preheated anode, comprising an anode body (11), wherein a carbon bowl (12) is arranged on the anode body (11), characterized in that: The charcoal bowl (12) comprises a bottom surface and a side surface, and a limiting groove (121) is arranged on the side surface of the charcoal bowl (12). When the steel claw (3) is inserted into the charcoal bowl (12), the limiting groove (121) and the steel claw (3) together form a limiting cavity (13) surrounding the steel claw (3).

2. A preheated anode according to claim 1, characterized in that: The lower side surface of the limiting groove (121) is flush with the bottom surface of the charcoal bowl (12).

3. A preheated anode according to claim 1, characterized in that: A spiral inclined groove (122) is provided on the side surface of the charcoal bowl (12) above the limiting groove (121), and the spiral inclined groove (122) is a through groove.

4. A preheated anode according to claim 1, characterized in that: The side surface of the charcoal bowl (12) is in a conical structure, and the diameter gradually decreases in the direction away from the opening.

5. A preheated anode according to claim 1, characterized in that: The anode body (11) is provided with a recessed portion (111), and the carbon bowl (12) is arranged on the bottom surface of the recessed portion (111).

6. A pre-heated anode production mold, characterized by: It comprises a mold core (21) and an air bag (22) sleeved on the outside of the mold core (21); The mold core (21) comprises a central air pipe (211), a first molding portion (212) is arranged outside the central air pipe (211), a bottom plate (213) is arranged at the lower end of the central air pipe (211), and an air hole (2111) is arranged on the side wall of the central air pipe (211) between the first molding portion (212) and the bottom plate (213); The air bag (22) is annular in structure and has an inner opening; The airbag (22) is located between the first molding portion (212) and the bottom plate (213), and the opening side of the airbag (22) is sealed and connected to the first molding portion (212) and the bottom plate (213) respectively. The airbag (22) and the mold core (21) together form an air cavity (23), and the air cavity (23) is connected to the central air pipe (211) through the air hole (2111).

7. A pre-heated anode production mold according to claim 6, characterized in that: The lower side of the airbag (22) is flush with the lower side of the bottom plate (213).

8. A pre-heated anode production mold according to claim 6, characterized in that: A spiral boss (2122) is provided on the outer side surface of the first forming portion (212).

9. A pre-heated anode production mold according to claim 6, characterized in that: The first forming portion (212) has a conical structure.

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