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 increased energy consumption and instability

Active Publication Date: 2010-07-21
GUIYANG AL-MG DESIGN & RES INST
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  • 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-el

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 the two ends of the cathode carbon block are provided with cathode steel rods 3, and the cathode carbon blocks 1 are spliced ​​by pasting 4; The surface of the cathode carbon block 1 is provided with a protruding strip 2, the height of the protruding strip 2 is 50-200mm, the protruding strip 2 is arranged along the longitudinal direction of the cathode carbon block 2 (series current direction), and the protruding strip 2 can be arranged on the top of the cathode carbon block 1 the middle of the surface (such as image 3 ), edges (such as Figure 4 ), or on the seam where two cathode carbon blocks 1 are spliced ​​(such as Figure 5 ), the protruding strip (2) can be pasted by binding (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 t...

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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 level of aluminum electrolytic cells, the newly designed and constructed aluminum electrolytic cells at home and abroad are increasingly developing in the direction of large-scale. The series current will inevitably increase to 550kA ~ 700kA or even above. In recent years, my country's aluminum electrolysis technology has also made great progress, and the capacity of the electrolytic cell has reached or even exceeded the international advanced level. However, there is still a large gap with the world's advanced level in terms of energy saving and consumption reduction. At present, the DC power consumption of various domestic aluminum factories hovers around 13200-3500kWh / T.Al, and some even approach 14000kWh / T.Al, which has consid...

Claims

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Application Information

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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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