Lateral gas guide anode structure for aluminum electrolysis

A technology of anode structure and aluminum electrolysis, which is applied to the field of gas-conducting structure on the side of the anode, can solve the problems of affecting the normal discharge of gas and blocking the perforation of the anode, and achieve the effects of saving energy, reducing consumption, reducing heat dissipation, and reducing the thickness of the bubble layer.

Inactive Publication Date: 2013-02-27
CHANGSHA CAIFENG ENERGY SAVING SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Tian Yingfu et al [10] The perforated anode was optimized to determine the size and specific location of the perforated anode, and the perforated anode was tested for industrial promotion, and the effect was good. However, in the test, the upper electrolyte crust in the hole would block the anode perforation. To a certain extent Affect the normal discharge of gas

Method used

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  • Lateral gas guide anode structure for aluminum electrolysis
  • Lateral gas guide anode structure for aluminum electrolysis
  • Lateral gas guide anode structure for aluminum electrolysis

Examples

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Embodiment

[0034] In the processing stage of the anode carbon block 2, two rows of longitudinal air guide holes 3 through the anode are drilled equidistantly along the length direction of the anode carbon block 2, 4 to 7 in each row, and the hole diameter is 10 mm to 30 mm, and then on the side of the anode carbon block 2 Drill 2 to 3 rows of parallel or staggered side exhaust holes 1 at the corresponding positions of the longitudinal air guide holes 3. The aperture is equal to the aperture of the longitudinal air guide hole 3, while ensuring that the side exhaust hole 1 communicates with the longitudinal air guide hole 3, and the top of the longitudinal air guide hole 3 is sealed, see figure 1 , figure 2 with image 3 , The anode carbon block 2 is provided with 5 longitudinal air holes 3 and 2 rows of horizontal side air vents 1 . Before changing poles, it is necessary to ensure that all exhaust holes are unobstructed to prevent local blockage from affecting the overall exhaust effec...

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Abstract

The invention discloses a lateral gas guide anode structure for aluminum electrolysis, which comprises an anode block (2) and a plurality of longitudinal gas guide holes (3) arranged on the anode block (2), wherein the tops of the longitudinal gas guide holes (3) are sealed; and the lateral part of the anode block (2) is provided with lateral vent holes (1) which are communicated with the longitudinal gas guide holes (3) and the outer part of the lateral wall of the anode block (2). According to the invention, the lateral gas guide anode structure for aluminum electrolysis can accelerate the gas escape at the bottom of the anode, avoid the direct contact of the gas and air, reduce the heat radiation of the gas, simultaneously prevent the gas from damaging an upper thermal insulation layer of the anode and indirectly reduce the heat radiation of the anode.

Description

technical field [0001] The invention relates to an anode side gas guiding structure, which is used for timely discharging the gas generated by the bottom palm of the anode. Background technique [0002] During the electrolysis process of the aluminum electrolytic cell, a large amount of gas will be generated at the bottom of the anode. These gases will gather in the bottom of the palm and form a bubble layer with a certain thickness. Due to the high resistivity of the gas, the existence of the bubble layer will make the anode overvoltage larger. In addition, the thick bubble layer also increases the chance of the secondary reaction of the aluminum liquid and reduces the current efficiency. If the thickness of the bubble layer can be reduced by optimizing the anode structure, the inter-electrode voltage and anode overvoltage will be reduced, and the DC power consumption per ton of aluminum will be reduced accordingly, and energy saving and consumption reduction in aluminum el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/12
Inventor 李贺韦隆和李贺松
Owner CHANGSHA CAIFENG ENERGY SAVING SCI & TECH
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