CN215628352U

CN215628352U - Aluminum cell cathode current distribution self-adaptive balancing structure

Info

Publication number: CN215628352U
Application number: CN202022240618.9U
Authority: CN
Inventors: 阮绍勇; 颜非亚; 杨幸雨
Original assignee: GUIYANG ALUMINUM MAGNESIUM DESIGN & RESEARCH INSTITUTE CO LTD
Current assignee: GUIYANG ALUMINUM MAGNESIUM DESIGN & RESEARCH INSTITUTE CO LTD
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2022-01-25
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a structure for self-adaptive balance of cathode current distribution of an aluminum electrolytic cell, which comprises a cell shell of the electrolytic cell, wherein the interior of the cell shell of the electrolytic cell is filled with materials including a plurality of groups of cathode carbon blocks, lining materials and cathode steel bars; and a conductor is connected between the adjacent cathode steel bars. Compared with the prior art, the scheme of the utility model can perform self-adaptive balanced uniform current distribution on the cathode, thereby fundamentally avoiding the occurrence of the situation of uneven current distribution of the cathode.

Description

Aluminum cell cathode current distribution self-adaptive balancing structure

Technical Field

The utility model belongs to the technical field of electrolytic aluminum, and particularly relates to a structure for carrying out self-adaptive balance on the cathode current distribution of an aluminum electrolytic cell.

Background

The electrolytic cell is the main equipment of the aluminum plant. In an electrolysis series, 200-300 electrolytic cells are generally connected in series, and strong direct current (200-800 kA) flows out from the positive electrode of a rectifying station, then sequentially enters a vertical column bus, an anode, electrolyte, aluminum liquid, a cathode, a cell periphery bus and the like of each cell, and finally returns to the negative electrode of the rectifying station. The stable operation of the electrolytic cell is maintained by mainly monitoring the voltage of the electrolytic cell and analyzing the change of the voltage to adjust the electrolytic process and stabilize the electrolytic cell, thereby achieving the aim of optimizing production.

Researchers have proposed the idea of determining the stability of an aluminum electrolysis cell by monitoring the distribution of the anode current of the cell. The uniformity of anode current distribution is closely related to the stability of the electrolytic cell, once the electrolytic cell has serious unevenness of anode current distribution, cell voltage fluctuation can be caused, the magnetic field is unstable, aluminum liquid fluctuation is disordered, and finally the cell temperature is increased, and the cell condition is worsened so as to cause a cell to be sick. In recent years, a system and equipment for monitoring and controlling the distribution of the anode current are implemented and applied to an aluminum factory to a certain extent, and the effect is good.

Also, the uniformity of the cathodic current distribution in electrolytic production is strongly related to the stability of the electrolytic cell, and the non-uniform cathodic current distribution often means that various undesirable or dangerous conditions may occur in the cell, such as: the problems of irregular hearth, crusting or precipitation on the surface of the cathode, local crack of the cathode, damage to the cathode steel bar and the like can cause the change of the flow rate and the form of the aluminum liquid in the electrolytic cell and the increase of the wave amplitude of the aluminum liquid level, finally cause the increase of the cell temperature, worsen the cell condition and influence the stability, the safety and the production operation index of the electrolytic cell. Generally, after anode current distribution data is monitored, a computer finds that the anode current distribution data is seriously uneven, and can immediately remind production personnel to participate, so that the problem can be solved. Through certain technical innovation, the cathode current distribution can also be monitored and adjusted, but measurement and control equipment and devices are certainly added, so that the investment is increased, and obviously, the method is not a preferable scheme.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the structure for carrying out self-adaptive balance on the cathode current distribution of the aluminum electrolytic cell is provided, so that the purpose that the cathode current distribution can be kept as uniform as possible during the production of the electrolytic cell is achieved, and the stable, efficient and low-consumption production of the electrolytic cell is realized.

The utility model is formed as follows:

a structure for self-adaptive balance of cathode current distribution of an aluminum electrolytic cell comprises a cell shell of the electrolytic cell, wherein the interior of the cell shell of the electrolytic cell is filled with materials including a plurality of groups of cathode carbon blocks, lining materials and cathode steel bars; and a conductor is connected between the adjacent cathode steel bars. The utility model connects the electric conductor between the adjacent cathode steel bars of the electrolytic cell, realizes the mutual conduction of the cathode steel bars of each group, leads the current to naturally form the balanced distribution adapting to the conditions of different electrolytic cells between the cathode steel bars, leads the potential of the cathode steel bars of each group to be consistent, theoretically leads the current distribution to be equal, and achieves the aim of uniform cathode current distribution.

Compared with the prior art, the scheme of the utility model can perform self-adaptive balanced uniform current distribution on the cathode, thereby fundamentally avoiding the occurrence of the situation of uneven current distribution of the cathode. Moreover, the scheme of the utility model can be used for the self-adaptive balance of the distribution of the cathode current of the electrolytic cell with different capacities, and has obvious improvement compared with the prior art.

Drawings

FIG. 1 is a schematic structural diagram 1 according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram 2 according to an embodiment of the present invention.

The labels in the figures are: 1-cell shell, 2-cathode carbon block, 3-cathode steel bar and 4-electric conductor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in figure 1, the connection of the shell, the cathode and the cathode steel bar of the electrolytic cell is shown schematically. The electrolytic cell comprises a cell shell 1, a cathode carbon block 2, a lining material, a cathode steel bar 3 and the like, wherein the cell shell 1 is filled with a plurality of groups of cathode carbon blocks 2, the cathode steel bar 3 is embedded and connected in a groove in each cathode carbon block 2, and the cathode steel bar 3 extends out of the outer wall of the cell shell 1 and is connected with an external cell periphery bus system. And an electric conductor 4 is connected between the adjacent cathode steel bars 3 to realize the mutual conduction of all groups of cathode steel bars 3.

Fig. 2 is a schematic view of the installation of the present invention. The specific installation scheme is as follows:

1. the cathode in the electrolytic cell is composed of a plurality of groups of cathode carbon blocks 2 in parallel, only 3 groups of cathode carbon blocks 2(1# -3 #) are illustrated in the figure, 2 groups of cathode steel bars 3 are correspondingly embedded in the groove of each group of cathode carbon blocks 2, and 6 groups (1# -6 #) are counted.

2. 5 groups of electric conductors 4(1# -5 #) are connected between the cathode steel bars 3(1#) -6 #. The material of the conductor 4 can be various, such as steel, copper, aluminum, etc., and the connection method can be welding, crimping or other methods.

The design of the present invention focuses on the principle of the adaptive balancing method and structure, and therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure of aluminum electrolysis cell cathode current distribution self-adaptive balance comprises a cell shell (1) of the aluminum electrolysis cell, and is characterized in that: the electrolytic cell is characterized in that the interior of a cell shell (1) of the electrolytic cell is filled with a plurality of groups of cathode carbon blocks (2), lining materials and cathode steel bars (3), the cathode steel bars (3) are embedded and connected in grooves in the cathode carbon blocks (2), and the cathode steel bars (3) extend out of the outer wall of the cell shell (1) and are connected with an external cell periphery bus system; and a conductor (4) is connected between the adjacent cathode steel bars (3).

2. The aluminum electrolysis cell cathode current distribution self-adaptive balancing structure according to claim 1, characterized in that: the connecting mode of the conductor (4) and the cathode steel bar (3) is welding or crimping, and the volume size of the conductor (4) is between 100x100x100mm and 1000x1000x1000 mm.