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Novel cathode structured aluminum cell with longitudinal and transversal wave damping functions

A cathode structure, aluminum electrolytic cell technology, applied in the field of aluminum electrolysis, can solve problems such as large stress difference, reduced electrolytic cell life, electrolytic cell operation influence, etc., to achieve the effects of improving stability and reducing dissolution loss

Inactive Publication Date: 2009-04-22
SHENYANG BEIYE METALLURGIGAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test results also found that: (1) The cathode structure of this electrolytic cell has the function of reducing the fluctuation of the aluminum liquid from the longitudinal direction of the electrolytic cell, that is, the direction perpendicular to the series current, but it cannot reduce the fluctuation of the aluminum liquid from the horizontal direction of the electrolytic cell
(2) The stress difference between the raised wall on the surface of the cathode carbon block and the matrix of the cathode carbon block is relatively large, and the protrusions are easy to break here. The broken protrusions are likely to affect the operation of the electrolytic cell and reduce the electrolysis rate. Tank life

Method used

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  • Novel cathode structured aluminum cell with longitudinal and transversal wave damping functions
  • Novel cathode structured aluminum cell with longitudinal and transversal wave damping functions
  • Novel cathode structured aluminum cell with longitudinal and transversal wave damping functions

Examples

Experimental program
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Effect test

Embodiment 1

[0054] A new type of cathode structure aluminum electrolytic cell with longitudinal and transverse wave reduction functions is adopted, such as figure 1 with figure 2 As shown, the outside of the aluminum electrolytic cell is a steel electrolytic cell shell 1; the thermal insulation material 2 of the electrolytic cell shell 1 is an asbestos board, and the bottom refractory brick and thermal insulation brick are laid on the bottom asbestos board of the thermal insulation material 2 3; On the bottom refractory bricks and insulation bricks 3 are cathode carbon blocks 4 and cathode steel rods 8 with raised structures on the upper surface.

[0055] The side of the electrolytic cell is the side carbon brick 5, and the cathode lining of the cell bottom in the electrolytic cell is composed of no less than 8 cathode carbon blocks 4 with a raised structure with cathode steel rods 8 installed at the bottom, each The cathode carbon block 4 is placed horizontally in the electrolytic cell...

Embodiment 2

[0065] A new type of cathode structure aluminum electrolytic cell with longitudinal and transverse wave reduction functions is adopted, such as image 3 with Figure 4 As shown, the overall structure of the electrolytic cell is the same as in Example 1, the difference is that the raised structure on the cathode carbon block is a mixed arrangement of horizontal raised structure and longitudinal raised structure, and the horizontal raised structure and vertical raised structure on each cathode carbon block substrate The protruding structures are arranged in a staggered manner, of which there is one horizontal protruding structure, the length of which is the same as the width of the cathode carbon block matrix; Above, the distance between the bottom of the longitudinal protruding structure at both ends and the two ends of the cathode carbon block is 30-50 mm; the distance between the adjacent transverse protruding structures and longitudinal protruding structures on the same cath...

Embodiment 3

[0071] A new type of cathode structure aluminum electrolytic cell with longitudinal and transverse wave reduction functions is adopted, such as Figure 5 and Figure 6 As shown, the overall structure of the electrolytic cell is the same as in Example 1, the difference is that the protrusion structures on the cathode carbon block are arranged in a mixed manner, and the protrusion structures on the matrix of each cathode carbon block are arranged alternately according to the horizontal protrusion structure and the longitudinal protrusion structure , wherein there are 3 horizontal raised structures, the length of which is the same as the width of the cathode carbon block matrix; The distance between the bottom of the longitudinal protruding structure at the end and the two ends of the cathode carbon block is 30-50 mm; the distance between adjacent protruding structures on the same cathode carbon block is 30-100 mm.

[0072] The cross-section of the longitudinal raised structure ...

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Abstract

The invention relates to a novel cathode structure aluminum electrolysis bath with longitudinal and transverse wave decreasing functions, which comprises an electrolysis bath shell, an electrolysis bath lining, a fire-resisting material, a cathode carbon block, a lining carbon brick, carbon tamping paste, fire-resisting concrete, and a cathode carbon bar. The cathode structure aluminum electrolysis bath is characterized in that the top surface of the cathode carbon block is provided with more than one raised structures each of which is connected with the cathode carbon block integrally, and the arranging mode of each raised structure is to be parallel to the axial direction of the cathode carbon block, vertical to the axial direction of the cathode block, or adopt a mixed mode of the two. The novel cathode structure aluminum electrolysis bath with the longitudinal and the transverse wave decreasing functions can slow down the flow speed of cathode aluminum fluid in the transverse direction and the longitudinal direction in the electrolysis bath and reduce the fluctuation height of the aluminum fluid surface in the transverse direction and the longitudinal direction, improve the stability of the aluminum fluid surface of aluminum, reduce the solution loss of the aluminum, reduce the electric energy consumption for aluminum electrolysis production, and prolong the service life of the novel cathode structure electrolysis bath.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis, in particular to a novel cathode structure aluminum electrolytic cell with longitudinal and transverse wave reduction functions. Background technique [0002] At present, industrial pure aluminum is mainly produced by cryolite-alumina molten salt electrolysis. Its special equipment is an electrolytic cell lined with carbonaceous materials. Between the steel shell of the electrolytic cell and the carbon lining are refractory materials and insulation bricks. The carbon lining of the electrolytic cell is generally made of carbon bricks (or blocks), and the material of the carbon bricks (or blocks) is anthracite or graphite material with good resistance to sodium and electrolyte corrosion, or a combination of both. mixture. Carry out tamping with the charcoal paste that above-mentioned carbonaceous material is made at the junction between them. A steel rod is placed at the bottom of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/08
CPCC25C3/08
Inventor 冯乃祥
Owner SHENYANG BEIYE METALLURGIGAL TECH CO LTD
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