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Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network

A skeleton network and aluminum electrolytic cell technology, which is applied in the field of electrolytic cell composite cathode structure, can solve problems such as damage to the horizontal current cell, and achieve the effects of lower cell voltage, reduced horizontal current, and tight integration

Inactive Publication Date: 2014-08-13
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, some studies on realizing horizontal current on the cathode structure mainly focus on the change of cathode steel rods, including steel rod slotting, double steel rods and special-shaped cathode steel rods, etc., these structures can reduce the horizontal current to a certain extent , but failed to fundamentally solve the horizontal current and the risk of slot damage due to the new structure

Method used

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  • Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network
  • Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network
  • Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network

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Embodiment 1

[0028] Such as figure 2 with image 3 Shown is the composite cathode adopting the herringbone cathode current collector framework 2 of the present invention, which is mainly composed of the cathode carbon block 1 and the herringbone cathode current collector framework 2, and the herringbone cathode current collector framework 2 is pre-embedded in the In the cathode carbon block 1, the close combination of the two is realized through the vibration forming and roasting of the cathode. In this embodiment 1, the total length of the cathode carbon block 1 is 3000-4000mm, the width is 400-700mm, and the height is 400-600mm; The length of the herringbone bifurcation on 2 is 50-100mm, the angle between two adjacent bifurcations is 90-120°, and the length of the trunk is 1500-2000mm; the cross-section of the herringbone cathode current collector skeleton 2 is circular or square , when the cross section of the herringbone cathode current collector skeleton 2 is square, the branch ske...

Embodiment 2

[0030] Such as Figure 4Shown is the composite cathode adopting the cross-shaped conductive current collector framework of the present invention, which is mainly composed of the cathode carbon block 1 and the cross-shaped conductive current collector framework 5. The cross-shaped conductive current collector framework 5 is pre-embedded in the cathode during the cathode manufacturing process. In the carbon block 1, the close combination of the two is realized through the vibration forming and roasting of the cathode. In this embodiment, the total length of the cathode carbon block 1 is 3000-4000mm, the width is 400-700mm, and the height is 400-600mm; The length of the cross-shaped bifurcation branch on the top is 50-100mm, and the adjacent cross-shaped conductive current collector skeleton 5 is connected to each other through the branches of the skeleton, and the length of the backbone of the cross-shaped conductive current collector skeleton 5 is 1500-2000mm; The cross-sectio...

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Abstract

The invention discloses an aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network. Since cathode current collector skeletons are pre-installed inside the cathode, cathode current collector skeletons with different shapes are pre-arranged in a cathode carbon block, so that the cathode structure can redistribute the distribution and the size of the level current in aluminum liquid, and the mechanical properties of the cathode can be improved and the service life of the cathode is improved. By virtue of the cathode, according to structural parameters and types of the materials determined by the actual groove design, the horizontal current density of the aluminum liquid along the long axis and short axis of the electrolytic tank can be significantly reduced and thus the vertical amplitude of fluctuation of the aluminum liquid-electrolyte interface is weakened and the proper melt horizontal movement is maintained, the electrolytic tank can run smoothly in a low polar distance, the energy conservation and consumption reduction are realized, and the processing of the structure is relatively simple and easily implemented.

Description

technical field [0001] The invention relates to a composite cathode structure of an electrolytic cell, in particular to a composite cathode structure of an aluminum electrolytic cell containing a highly conductive skeleton network. Background technique [0002] In the traditional Hall-Héroult (Hall-Héroult) aluminum electrolytic cell, the current enters the anode busbar from the column, then flows into the tank through the aluminum guide rod and flows out from the side of the tank. From a macroscopic point of view, the direction of the current is between the aluminum liquid and the A 90-degree turn is made in the cathode. Since the resistivity of the aluminum liquid is much smaller than that of the electrolyte and the cathode carbon block, a horizontal current exists in the aluminum liquid, and the horizontal current not only affects the vertical magnetic field, but also cooperates with the vertical magnetic field. effect, affecting the stability of the magnetic fluid in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
Inventor 张红亮李劼杨帅吕晓军江南
Owner CENT SOUTH UNIV
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