Special-shaped cathode structured aluminum electrolytic cell

A cathode structure and technology of aluminum electrolytic cells, applied in the field of aluminum electrolytic cells, can solve the problems of uneven distribution of current density and magnetic field intensity, large differences in distances to cathode steel rods, and large differences in distances from cathode steel rods. The effect of uniform density distribution, reduction of DC power consumption per ton of aluminum, reduction of pole pitch and cell voltage

Inactive Publication Date: 2011-01-12
湖南五强产业集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Chinese patent CN201416037Y discloses a new type of aluminum electrolytic cell. The cathode structure of the electrolytic cell includes a tank shell and a lining. The height of the solid material is lower than the height of the cathode carbon block so that grooves appear between the cathode carbon blocks. The cathode structure of this aluminum electrolytic cell can make the aluminum liquid flow into the groove, but the points on the surface of the cathode are connected to the cathode steel rod. The distance varies greatly, and the current density and magnetic field strength are unevenly distributed during the electrolysis process, which seriously affects the curren

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  • Special-shaped cathode structured aluminum electrolytic cell

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Embodiment 1

[0025] An aluminum electrolytic cell with a special-shaped cathode structure, including a tank shell 1, a refractory heat preservation material 2 arranged at the bottom, an anode and a cathode carbon block 3, and a cathode steel rod 4 is installed at the bottom of the cathode carbon block 3, and the cathode carbon block 3 The upper end is rounded in the longitudinal direction, and the top of the cathode carbon block 3 is provided with a transverse groove 5 . Such as figure 1 As shown, the aluminum electrolytic cell includes a tank shell 1, a refractory insulation material 2 arranged at the bottom of the tank shell 1 and a cathode carbon block 3, and a cathode steel rod 4 is installed at the bottom of the cathode carbon block 3, and the steel rods 4 are two steel rod, the upper end of the cathode carbon block 3 is rounded in the longitudinal direction. Such as figure 2 , 3 As shown, the top of the cathode carbon block 3 is provided with a transverse groove 5 .

Embodiment 2

[0027] An aluminum electrolytic cell with a special-shaped cathode structure, including a tank shell 1, a refractory and heat-insulating material 2 arranged at the bottom, and a cathode carbon block 3. A cathode steel rod 4 is installed at the bottom of the cathode carbon block 3. The upper end of the cathode carbon block 3 is along the The longitudinal direction is an arc angle, and the top of the cathode carbon block 3 is provided with a transverse groove 5 . Such as figure 1 As shown, the aluminum electrolytic cell includes a tank shell 1, a refractory heat-insulating material 2 arranged at the bottom of the tank shell 1, and a cathode carbon block 3, and a cathode steel rod 4 is installed at the bottom of the cathode carbon block 3. Such as Figure 5 As shown, the upper end of the cathode carbon block 3 is arc-shaped in the longitudinal direction. Such as figure 2 , 3 As shown, the top of the cathode carbon block 3 is provided with a transverse groove 5 .

Embodiment 3

[0029] An aluminum electrolytic cell with a special-shaped cathode structure, including a tank shell 1, a refractory and heat-insulating material 2 arranged at the bottom, and a cathode carbon block 3. A cathode steel rod 4 is installed at the bottom of the cathode carbon block 3. The upper end of the cathode carbon block 3 is along the The longitudinal direction is rounded, and the top of the cathode carbon block 3 is provided with a transverse groove 5. The cathode carbon blocks 3 are arranged side by side in the longitudinal direction, and the gaps between the cathode carbon blocks 3 are fixed with cathode paste. The adjacent cathode carbon blocks 3 The relative rounded corners and the cathode paste that fills the gap between the cathode carbon block 3 form a longitudinal groove 6. Such as figure 1 As shown, the aluminum electrolytic cell includes a tank shell 1, a refractory heat-insulating material 2 arranged at the bottom of the tank shell 1, and a cathode carbon block 3...

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Abstract

The invention relates to a special-shaped cathode structured aluminum electrolytic cell. The aluminum electrolytic cell comprises a cell shell, a fire-resistant and thermal-insulation material arranged at the bottom, an anode carbon block and a cathode carbon block, wherein the bottom of the cathode carbon block is provided with a cathode steel bar. The aluminum electrolytic cell is characterized in that: a round angle or an arc angle is formed at the upper end of the cathode carbon block lengthways; and the top of the cathode carbon block is provided with a traverse groove. The special-shaped cathode structure aluminum electrolytic cell can greatly reduce horizontal current in aluminum liquid, makes the current density of the cathode carbon block and the cathode steel bar more uniform, makes the magnetic field distribution in the cathode carbon block and the cathode steel bar more uniform, can effectively reduce the flow velocity and the fluctuation range of the aluminum liquid, and greatly prolongs the service life of the electrolytic cell.

Description

1. Technical field [0001] The invention relates to an aluminum electrolytic cell, in particular to an aluminum electrolytic cell with a special-shaped cathode structure. 2. Background technology [0002] At present, the extraction of aluminum in industry is mainly produced by cryolite-alumina molten salt electrolysis, and its special equipment is an electrolytic cell lined with carbonaceous materials. It is a refractory material and insulation brick. The carbon lining of the electrolytic cell is generally made of carbon bricks made of anthracite or graphite materials or a mixture of the two, which have good resistance to sodium salt and electrolyte corrosion. The carbon paste made of carbonaceous material is used for tamping between the block and the carbon block. [0003] The cathode structure of the existing aluminum electrolytic cell mostly adopts a groove at the bottom of the cathode carbon block and is equipped with a cathode steel rod. The cathode carbon block is vert...

Claims

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Application Information

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IPC IPC(8): C25C3/08
Inventor 敬叶灵龚克成邓发权
Owner 湖南五强产业集团股份有限公司
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