CN202139301U - Magnetic shielding aluminum electrolytic cell - Google Patents

Abstract

The utility model discloses a magnetically shielded aluminum electrolytic cell, which comprises an aluminum electrolytic cell, an anode carbon block is arranged on the aluminum electrolytic cell, an anode guide rod is arranged on the anode carbon block, and an anode bus bar is arranged on the anode guide rod , the anode busbar is connected to the column busbar, wherein a shielding tank cover plate is set between the aluminum electrolytic cell shell and the aluminum electrolytic cell upper structure, and a column busbar cover plate is set outside the column busbar. The utility model connects the aluminum electrolytic cell shell and the upper structure with ferromagnetic materials to form a closed magnetic shielding circuit between the aluminum electrolytic cell shell and the upper structure. At the same time, the column bus bar cover plate is arranged outside the column bus bar, and the structure is simple. , takes up little space, does not affect the original structure of the aluminum electrolytic cell, the aluminum electrolytic cell operates stably, and has a good shielding effect.

Description

A magnetically shielded aluminum electrolytic cell

technical field

The utility model relates to an aluminum electrolytic cell, which belongs to the nonferrous metal smelting industry, in particular to a magnetically shielded aluminum electrolytic cell.

Background technique

Large-scale aluminum electrolytic cells are powered by a large-scale multi-point power supply method. Due to the strong current passing through the electrolytic cell, reaching hundreds of thousands of amperes, a strong magnetic field will be generated in the power supply bus, which will affect the electrolytic cell. The aluminum liquid that is the cathode and conducts a large current generates electromagnetic force, which makes the operation of the aluminum liquid layer unstable, thereby increasing the power consumption of electrolytic aluminum and reducing the current efficiency. At present, in order to reduce the influence of the magnetic field generated by the busbar on the molten aluminum, complex magnetic compensation measures are adopted. The amount of busbar used in the electrolytic cell is relatively large, nearly 100 tons per cell, and the effect is not very satisfactory. The busbars of the electrolytic cell are divided into column busbars, busbars around the tank and anode busbars. The busbars around the tank are located around the tank shell (steel plate with a closed bottom around it), the tank shell has a shielding effect on it, and the anode busbar is in the upper structure (mainly composed of steel) Above, the steel has a certain shielding effect on it, and the column busbar is the main channel for the electrolytic cell to receive electricity. The current is concentrated, and it is located on the edge of the electrolytic cell processing surface. The industry has recognized that it is the source of the largest magnetic field in the electrolytic cell. Although through complex compensation, its adverse effects are still relatively obvious, and there is no feasible solution at present.

Utility model content

In view of this, the purpose of this utility model is to provide a magnetically shielded aluminum electrolytic cell, which overcomes the deficiencies of the prior art. Between the cell shell and the upper structure of the aluminum electrolytic cell, a ferromagnetic material is used to connect the aluminum electrolytic cell. The shell and the upper structure form a closed magnetic circuit. The interior of the aluminum electrolytic cell is located in the space surrounded by ferromagnetic materials. At the same time, the column bus cover is set outside the column bus. With structure, the aluminum electrolytic cell runs stably and has good shielding effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

A magnetically shielded aluminum electrolytic cell, comprising an aluminum electrolytic cell, an anode carbon block is arranged on the aluminum electrolytic cell, an anode guide rod is arranged on the anode carbon block, an anode bus bar is arranged on the anode guide rod, and the anode bus bar is connected to a column For the bus bar, a shielding tank cover plate is arranged between the aluminum electrolytic cell shell and the upper structure of the aluminum electrolytic cell, and a column bus bar cover plate is arranged outside the column bus bar.

Further, the shielding slot cover plate is made of ferromagnetic material, and is composed of multiple pieces to form a whole, each piece can be moved freely, and the shielding slot cover plate is airtight or grid-shaped.

Further, the column busbar cover plate is made of ferromagnetic material, including the column busbar upper cover plate and the column busbar lower cover plate, one end of the column busbar upper cover plate is set on the column, and the other end is connected with the column busbar lower cover plate.

Furthermore, the cover plate of the column bus bar is airtight or grid-shaped.

Further, a short-circuit block cover plate is arranged outside the short-circuit block of the aluminum electrolytic cell.

The beneficial effects of the utility model are:

1. Simple structure, small footprint, does not affect the original structure of the aluminum electrolytic cell;

2. The magnetic shield is located at the key part where the magnetic field is generated, and the shielding effect is good;

3. After adopting the utility model, the complex busbar system originally set up for the purpose of stabilizing the magnetic field can be simplified, a large amount of aluminum materials can be saved, and equipment investment can be reduced;

4. After adopting the magnetic shielding of the utility model, the electrolyzer operates stably, the production efficiency is improved, and the energy-saving effect is remarkable.

Other advantages, objectives and features of the present utility model are set forth in the following description, and to some extent, based on the investigation and research below, it will be obvious to those skilled in the art, or can be obtained from the practice of the present utility model be taught in. The objectives and other advantages of the present utility model can be realized and obtained through the structures particularly pointed out in the following description or accompanying drawings.

Description of drawings

Fig. 1 is the schematic diagram of the column busbar shielding of the utility model;

Fig. 2 is a schematic diagram of the shielding of the tank cover between the tank shell and the upper structure of the aluminum electrolytic tank of the present invention.

Detailed ways

Referring to Fig. 1 and Fig. 2, an anode carbon block 7 is arranged on the aluminum electrolytic cell 8, an anode guide rod 2 is arranged on the anode carbon block 7, an anode bus bar 1 is installed on the anode guide bar 2, and the anode bus bar 1 is connected to the column bus bar 4 . A shielding tank cover plate 9 is set between the shell of the aluminum electrolytic cell 8 and the upper structure, and the shielding tank cover plate 9 connects the shell of the aluminum electrolytic cell 8 and the upper structure to form a closed magnetic shielding circuit. In the space surrounded by the magnetic material, the ferromagnetic material can be a steel plate or other magnetically permeable materials. The shielding groove cover plate 9 is mainly made of ferromagnetic material, and is composed of multiple pieces to form a whole. Each piece can be moved freely. It can be airtight or grid-shaped. Many pieces of ferromagnetic material can be moved to realize The normal operation of the aluminum electrolytic cell 8 is required.

Install the column busbar cover plate on the periphery of the column busbar 4. The column busbar cover plate is spliced or integrally formed by steel plates or other ferromagnetic materials. The part corresponding to the upper end of the column busbar flexible connection can move with the up and down of the column to surround the column busbar 4. Get up, make the column bus 4 in a closed space made of ferromagnetic material, to shield the magnetic field generated by the current of the column bus 4 . The column busbar cover plate is divided into the column busbar upper cover plate 3 and the column busbar lower cover plate, one end of the column busbar upper cover plate 3 is set on the column, and the other end is connected with the column busbar lower cover plate, and the short circuit block 5 is surrounded by a short circuit block cover plate 6. The short-circuit block cover plate 6 is connected with the lower cover plate of the upright busbar, and the short-circuit block cover plate 6 is composed of steel plate or other magnetically conductive materials.

Both the column bus bar cover plate and the short-circuit block cover plate 6 are composed of multiple pieces of ferromagnetic materials to form a whole, and each piece can be moved freely. It can be airtight or grid-shaped. Multiple pieces of ferromagnetic materials can be moved. Easy to operate and maintain.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the utility model are all common changes of the utility model , as long as they do not deviate from the spirit and scope of the technical solution of the utility model, they should be included in the claims of the utility model.

Claims (5)

1. A magnetically shielded aluminum electrolytic cell, comprising an aluminum electrolytic cell, an anode carbon block is set on the aluminum electrolytic cell, an anode guide rod is arranged on the anode carbon block, an anode bus bar is arranged on the anode guide rod, and the anode bus bar The connection column bus is characterized in that: a shielding tank cover is provided between the aluminum electrolytic cell shell and the upper structure of the aluminum electrolytic cell, and a column bus cover is provided outside the column bus. 2. A magnetically shielded aluminum electrolytic cell according to claim 1, characterized in that: the shielding cell cover plate is made of ferromagnetic material, and a plurality of pieces are combined to form a whole, and each piece can be moved freely. The shielding groove cover plate is airtight or grid-shaped. 3. A magnetically shielded aluminum electrolytic cell according to claim 2, wherein the cover plate of the column bus bar is made of ferromagnetic material, including an upper cover plate of the column bus bar and a lower cover plate of the column bus bar, and the column bus bar One end of the upper cover plate is set on the column, and the other end is connected with the lower cover plate of the column bus bar. 4. A magnetically shielded aluminum electrolytic cell according to claim 3, characterized in that: the column busbar cover plate is airtight or grid-shaped. 5. A magnetically shielded aluminum electrolytic cell according to claim 1, characterized in that: a short-circuit block cover plate is arranged outside the short-circuit block of the aluminum electrolytic cell.

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