Copper-embedded cathode steel bar for aluminum electrolysis

Abstract

The utility model discloses a copper-embedded cathode steel bar for aluminum electrolysis, which comprises a steel bar body, a casting cavity is arranged inside the steel bar body, a casting copper column is arranged inside the casting cavity, a plurality of casting ports are arranged at the top of the steel bar body, and a graphite layer is arranged on the surface of the steel bar body. By arranging the multiple casting openings, casting liquid can be injected into the casting cavity from the multiple casting openings at the same time, the casting cavity is rapidly filled with the casting liquid, the situation that the casting liquid is cooled and blocks the casting cavity is avoided, and the casting copper column formed by cooling of the casting liquid can be tightly attached to the casting cavity; the multiple casting openings are formed, and after casting, the casting openings can serve as exhaust ports, so that rapid cooling of casting liquid is facilitated, the forming time of the cast copper column is shortened, the production efficiency is improved, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cathode steel bars, in particular to a copper-embedded cathode steel bar for aluminum electrolysis. Background Art

[0002] Aluminum electrolytic cell is the main equipment for aluminum smelting. Cathode is an important part of the electrolytic cell. Cathode and busbar are connected through cathode steel rods, and the connection will produce partial voltage drop in the electrolytic cell. Electrolytic aluminum is a high energy-consuming industry, and reducing energy consumption is of great significance to electrolytic aluminum. In order to reduce the energy consumption of electrolytic aluminum, reducing the voltage drop of each part of the electrolytic cell is a very practical and effective measure. Cathode steel rods play a very important role in electrolytic production. Its quality and reasonable design directly affect whether electrolytic production can be stable, efficient and the level of production costs.

[0003] After searching, it is found that there is a new type of copper-embedded cathode steel rod in the prior art, which includes a blind hole opened along the central axis of the steel rod, and an end cap is set at the open end of the blind hole; a casting process hole is opened on one side of the open end of the blind hole, and an exhaust hole is opened on the same side of the other end of the blind hole; and a cast copper column is filled in the blind hole. The copper rod is formed by casting to prevent air from appearing in the blind hole, and the copper rod and the steel rod have better fit and better performance. A structure is also provided, which includes a blind hole opened along the central axis of the steel rod, a copper rod filled in the blind hole, a push rod for pressing the copper rod, and an end cap for sealing the blind hole, and the two ends of the push rod are respectively abutted against the end cap and one end of the copper rod. The amount of copper rod used can be reduced, cost can be saved, and the problem of axial thermal expansion of the copper rod can be alleviated.

[0004] However, the above technology has the following problems: since the casting port of the cast copper rod is at the end of the steel rod, the casting liquid needs to flow from one end of the steel rod to the other end. During the flow, the casting liquid will stagnate due to cooling, which makes it easy for the casting liquid to cool and become blocked, and the casting liquid cannot fill the casting cavity, so that the cast copper rod cannot fit tightly with the steel rod. In addition, there is only one casting port and exhaust port, which causes the casting liquid to cool too slowly, wasting time. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a copper-embedded cathode steel rod for aluminum electrolysis to solve the problems of the above-mentioned technology that in the process of casting copper rods, the casting liquid cooling is easily blocked, the casting cavity cannot be filled with the casting liquid, and the casting liquid cools too slowly, wasting time, etc.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a copper-embedded cathode steel rod for aluminum electrolysis, comprising a steel rod body, a casting cavity is opened inside the steel rod body, a casting copper column is arranged inside the casting cavity, a plurality of casting ports are opened on the top of the steel rod body, and a graphite layer is arranged on the surface of the steel rod body.

[0007] Preferably, both ends of the steel rod body extend outward to form mounting portions.

[0008] Preferably, a mounting hole is provided on the mounting portion. By providing the mounting portion and the mounting hole, the steel bar body can be conveniently mounted and fixed by bolts to prevent the steel bar body from moving during use.

[0009] Preferably, the pouring port comprises an inclined pouring pipe, the inner end of which is connected to the pouring cavity. By arranging the inclined pouring pipe, the pouring liquid can slowly enter the pouring cavity, avoiding the pouring liquid directly pouring in and splashing out of the pouring pipe.

[0010] Preferably, a casting groove is provided on the top of the casting tube. By providing the casting groove, it is convenient to pour the casting liquid into the casting tube, that is, to conveniently inject the casting liquid into the casting cavity.

[0011] Preferably, a blocking piece is provided in the casting port, and the blocking piece comprises a blocking column, and a blocking block is provided on the top of the blocking column.

[0012] The utility model provides a copper-embedded cathode steel rod for aluminum electrolysis, which has the following beneficial effects:

[0013] 1. The utility model provides multiple casting ports, and can simultaneously inject casting liquid into the casting cavity from the multiple casting ports, so that the casting liquid quickly fills the casting cavity, avoids the casting liquid cooling and clogging the casting cavity, and enables the casting copper column formed by the casting liquid cooling to fit closely with the casting cavity;

[0014] 2. The utility model has multiple casting ports, which can serve as exhaust ports after casting, so as to facilitate rapid cooling of the casting liquid, shorten the molding time of the cast copper column, improve production efficiency and save time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the steel rod body of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the blocking member of the utility model.

[0018] In the figure:

[0019] 1. Steel rod body; 101. Mounting part; 102. Mounting hole; 2. Casting cavity; 3. Casting port; 301. Casting tube; 302. Casting trough; 4. Casting copper column; 5. Sealing part; 501. Sealing column; 502. Sealing block; 6. Graphite layer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: a copper-embedded cathode steel rod for aluminum electrolysis, comprising a steel rod body 1, a casting cavity 2 is provided inside the steel rod body 1, a casting copper column 4 is provided inside the casting cavity 2, a plurality of casting ports 3 are provided on the top of the steel rod body 1, and a graphite layer 6 is provided on the surface of the steel rod body 1.

[0022] In this embodiment, both ends of the steel bar body 1 extend outward to form a mounting portion 101, and a mounting hole 102 is provided on the mounting portion 101. By providing the mounting portion 101 and the mounting hole 102, the steel bar body 1 can be conveniently mounted and fixed by bolts to prevent the steel bar body 1 from moving during use.

[0023] In this embodiment, the pouring port 3 includes a pouring pipe 301 which is tilted, and the inner end of the pouring pipe 301 is connected to the pouring cavity 2. A pouring groove 302 is provided on the top of the pouring pipe 301. By providing the tilted pouring pipe 301, the pouring liquid can be slowly introduced into the pouring cavity 2, and the pouring liquid is prevented from being directly poured into the pouring pipe 301 and splashed out. By providing the pouring groove 302, the pouring liquid can be conveniently poured into the pouring pipe 301, that is, the pouring liquid can be conveniently injected into the pouring cavity 2.

[0024] In this embodiment, a plugging member 5 is provided in the casting port 3, and the plugging member 5 includes a plugging column 501, and a plugging block 502 is provided on the top of the plugging column 501. The plugging column 501 is matched with the casting pipe 301, and the plugging block 502 is matched with the casting groove 302. The plugging column 501 and the plugging block 502 are integrally formed, and the material of the plugging column 501 and the plugging block 502 is the same as that of the steel rod body 1.

[0025] Working principle:

[0026] When producing cathode steel rods, one casting port 3 is retained, and casting liquid is quickly injected into the casting cavity 2 through other casting ports 3 at the same time. After the casting liquid fills the entire casting cavity 2, the casting liquid is cooled through multiple casting ports 3 until the casting liquid forms a casting copper column 4, and the blocking piece 5 is inserted into the casting port 3, and the blocking column 501 and the casting tube 301, as well as the blocking block 502 and the casting groove 302 are tightly fitted, and the blocking piece 5 is firmly welded to the casting port 3 by welding, and then a graphite layer 6 is plated on the outside of the steel rod body 1. By setting up multiple casting ports 3, casting liquid can be injected into the casting cavity 2 from the multiple casting ports 3 at the same time, so that the casting liquid can quickly fill the casting cavity 2, and the casting liquid is prevented from cooling and clogging the casting cavity 2, so that the cast copper column 4 formed by the cooling of the casting liquid can fit tightly with the casting cavity 2; by opening multiple casting ports 3, after casting, the casting ports 3 can serve as exhaust ports, which facilitates the rapid cooling of the casting liquid, shortens the molding time of the cast copper column 4, improves production efficiency, and saves time.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A copper-embedded cathode steel bar for aluminum electrolysis, comprising a steel bar body (1), characterized in that: A casting cavity (2) is provided inside the steel rod body (1), a casting copper column (4) is provided inside the casting cavity (2), a plurality of casting ports (3) are provided on the top of the steel rod body (1), and a graphite layer (6) is provided on the surface of the steel rod body (1).

2. The copper-embedded cathode steel rod for aluminum electrolysis according to claim 1, characterized in that: Both ends of the steel rod body (1) extend outwards to form mounting portions (101).

3. The copper-embedded cathode steel rod for aluminum electrolysis according to claim 2, characterized in that: The mounting portion (101) is provided with a mounting hole (102).

4. The copper-embedded cathode steel rod for aluminum electrolysis according to claim 1, characterized in that: The casting port (3) comprises a casting pipe (301) arranged obliquely, and the inner end of the casting pipe (301) is in communication with the casting cavity (2).

5. The copper-embedded cathode steel rod for aluminum electrolysis according to claim 4, characterized in that: A casting groove (302) is provided on the top of the casting pipe (301).

6. The copper-embedded cathode steel rod for aluminum electrolysis according to claim 1, characterized in that: A blocking piece (5) is arranged in the casting port (3), wherein the blocking piece (5) comprises a blocking column (501), and a blocking block (502) is arranged on the top of the blocking column (501).

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