Method for inhibiting voltage swing of aluminum reduction cell and baffle wall-carrying cathode of aluminum reduction cell

An aluminum electrolytic cell and voltage pendulum technology, applied in the field of aluminum electrolysis, to achieve the effects of easy operation and realization, reduced energy consumption, and reduced pole distance

Inactive Publication Date: 2012-07-11
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the voltage swing caused by the fluctuation of the existing aluminum liquid interface, and provide a method for suppressing the voltage swing of the aluminum electrolytic cell and the cathode of the aluminum electrolytic cell with a partition wall, so as to reduce the pole distance, reduce the The purpose of reducing voltage and reducing energy consumption

Method used

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  • Method for inhibiting voltage swing of aluminum reduction cell and baffle wall-carrying cathode of aluminum reduction cell
  • Method for inhibiting voltage swing of aluminum reduction cell and baffle wall-carrying cathode of aluminum reduction cell
  • Method for inhibiting voltage swing of aluminum reduction cell and baffle wall-carrying cathode of aluminum reduction cell

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Embodiment 1

[0020] Example 1: Both the partition wall and the cathode carbon block will be immersed in the aluminum liquid at about 1000°C, and they will often contact the electrolyte liquid. Therefore, the partition wall must be able to withstand high temperature, and the material will not dissolve into the aluminum liquid. Choose carbon block as the partition wall, as follows:

[0021] Such as Figure 4 and 5 As shown in the aluminum electrolytic cell, there are two rows of prebaked anodes 5, and the gap between the two rows of anodes 5 is generally 200 mm. Make the vertical partition wall 2 and the cathode carbon block 6 into a whole to form the tank chamber 1 (because the specific gravity of the carbon block is less than 2.3, it is necessary to make the vertical partition wall 2 and the cathode carbon block into a whole to prevent floating), the vertical partition wall 2. Arranged along the middle seam of the anode, one end of the longitudinal partition wall 2 is connected to the si...

Embodiment 2

[0023] Embodiment 2: Use silicon carbide, sintered corundum or titanium boride to make a strip-shaped partition wall 2, place the partition wall 2 in the groove chamber 1, place it along the middle slit of the anode, and connect one end of the partition wall 2 to the carbon at the side of the flue Block 3, the other end is 1.5 meters away from the carbon block 4 at the side of the aluminum outlet, and the height of the partition wall 2 is 5cm lower than the liquid aluminum interface.

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Abstract

The invention discloses a method for inhibiting voltage swing of an aluminum reduction cell and a baffle wall-carrying cathode of the aluminum reduction cell. The method comprises the following steps of: arranging a baffle wall inside a cathode groove of the aluminum reduction cell, and connecting one end of the baffle wall with a carbon block at the lateral part of a flue with the other end being 1-1.5m far away from the lateral part of an aluminum tapping end. By the arrangement of the baffle wall in the groove of the aluminum reduction cell, recirculating flow of molten aluminum is blocked and interface fluctuation of the molten aluminum is inhibited, thus effectively inhibiting the voltage swing of the aluminum reduction cell, stabilizing the electrolytic process and achieving the purpose of reducing polar distance, voltage and energy consumption. In addition, the method and the apparatus provided by the invention are easy to operate and realize, and can be widely applied in present common aluminum reduction cells.

Description

technical field [0001] The invention relates to the technical field of aluminum electrolysis, in particular to a method for suppressing the voltage swing of an aluminum electrolytic cell and a cathode of an aluminum electrolytic cell with a longitudinal partition wall. Background technique [0002] The current general-purpose aluminum electrolytic cell cathode lining is a cuboid box-shaped container, which is made of various refractory materials. The basin-shaped cavity lined with the cathode is called the tank, and the inside of the tank is filled with molten cryolite electrolyte and aluminum liquid at a temperature of about 900-1000 °C. The molten cryolite electrolyte is highly corrosive and can dissolve alumina. Now the only engineering material that can withstand the erosion of the molten cryolite electrolyte is carbon. Therefore, the lining of the electrolytic cell is in contact with the molten cryolite electrolyte. The bottom of the chamber is made of multiple long re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
Inventor 王愚
Owner GUIYANG AL-MG DESIGN & RES INST
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