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Cathode of aluminum cell

An aluminum electrolytic cell and electrolytic cell technology, applied in the field of aluminum electrolytic cells, can solve problems such as instability and increased energy consumption

Active Publication Date: 2013-11-20
GUIYANG AL-MG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the existence of high-velocity vortices will cause large uplifts and fluctuations on the surface of the aluminum liquid-electrolyte, which may cause instability of the aluminum liquid-electrolyte interface under certain conditions and increase energy consumption.

Method used

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Embodiment

[0031] Example: such as figure 1 As shown, the cathode carbon block 1 is arranged at the bottom of the aluminum electrolytic cell, and cathode steel rods 3 are provided at both ends of the cathode carbon block, and the cathode carbon blocks 1 are spliced ​​by the paste 4; The surface of the cathode carbon block 1 is provided with a protruding strip 2 whose height is 50-200mm. The protruding strip 2 is arranged along the longitudinal direction of the cathode carbon block 2 (series current direction). The protruding strip 2 can be arranged on the top of the cathode carbon block 1. The middle of the face (e.g. image 3 ), edges (such as Figure 4 ), or on the seam between two cathode carbon blocks 1 splicing (such as Figure 5 ), the protruding belt (2) can be pasted (such as Image 6 ), bonding (such as Figure 7 ), mosaic (such as Figure 8 ) Or integrally cast on the surface of the cathode carbon block 1. At the same time according to Figure 9-11 It can be seen that the gener...

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Abstract

The invention discloses a cathode of an aluminum cell, which comprises cathode carbon blocks (1) arranged at the bottom of the aluminum cell and bulge bands (2) arranged on the cathode carbon blocks (1). The bulge bands (2) are arranged on the surface of the cathode carbon blocks (1) located inside the aluminum cell. The bulge bands (2) are located in the center or edge of the top surface of the cathode carbon blocks (1) or in the break joint of split joint between two cathode carbon blocks (1). The invention can better improve stability of aluminum liquid electrolyte interface in the aluminum cell, effectively reduce polar distance during normal producing and obtain lower aluminum cell working voltage, thereby achieving the effect of energy conservation and consumption reduction.

Description

Technical field [0001] The invention relates to a cathode of an aluminum electrolytic cell, belonging to the technical field of aluminum electrolytic cells. Background technique [0002] With the improvement of the design and operation technology of aluminum reduction cells, newly designed and constructed aluminum reduction cells at home and abroad are increasingly becoming larger. The series current will inevitably increase to 550kA~700kA or even above. In recent years, my country's aluminum electrolysis technology has also made considerable progress, and the electrolytic cell capacity has reached or even exceeded the international advanced level. However, there is still a big gap with the world's advanced level in terms of energy saving and consumption reduction. At present, the DC power consumption of domestic aluminum plants is hovering around 13200-3500kWh / T.Al, and some are even close to 14000kWh / T.Al, which has considerable potential to be tapped. Especially in the curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/08
Inventor 杨溢郑莆曹斌席灿明包崇爱
Owner GUIYANG AL-MG DESIGN & RES INST
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