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Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof

A technology of anode carbon block and exhaust channel, which is applied in the field of aluminum electrolysis, can solve the problems of ineffective current efficiency and power consumption of the electrolytic cell, and achieve the effects of benefiting the current efficiency, avoiding shedding phenomenon, and reducing the voltage of the cell

Inactive Publication Date: 2014-01-01
冯乃祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because this groove is too shallow, its groove is completely immersed in the electrolyte melt during most of the anode working time, so that the journey of the anode gas in the electrolyte melt is not shortened, and the resistance it suffers is not Therefore, its effect of improving the current efficiency of the electrolyzer or reducing the power consumption is not obvious

Method used

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  • Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof
  • Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof
  • Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The cross-sectional structure of the anode carbon block of the special-shaped aluminum electrolytic cell with the exhaust channel is as follows: figure 1 As shown, the A-A surface structure is as figure 2 As shown, the B-B surface structure is as image 3 As shown, the C-C surface structure is as Figure 4 As shown, the D-D surface structure is as Figure 5 As shown, the E-E surface structure is as Figure 6 As shown; the top edge of the anode carbon block 1 is provided with chamfers, and there are two rows of carbon bowls evenly distributed on the top surface, and each row of carbon bowls is arranged longitudinally along the anode carbon block, and is composed of four carbon bowls 2; There is a groove 3 between them, and the bottom of the groove is provided with a through hole 4 communicating with the groove 5 at the bottom of the anode carbon block; a cover plate 6 is arranged above the groove;

[0085] A horizontal groove is provided between two adjacent carbon ...

Embodiment 2

[0097] The cross-sectional structure of the anode carbon block of the special-shaped aluminum electrolytic cell with the exhaust channel is as follows: Figure 7 As shown, the A-A surface structure is as Figure 8 As shown, the B-B surface structure is as Figure 9 As shown, the C-C surface structure is as Figure 10 As shown, the D-D surface structure is as Figure 11 As shown, the E-E surface structure is as Figure 12 As shown; the top edge of the anode carbon block 1 is provided with chamfers, and a row of carbon bowls is evenly distributed on the top surface and arranged longitudinally along the anode carbon block. A row of carbon bowls is composed of four carbon bowls 2; There is a groove 3, and a through hole 4 is provided at the bottom of the groove to communicate with the groove 5 at the bottom of the anode carbon block; a cover plate 6 is provided above the groove;

[0098] A transverse groove is provided between two adjacent carbon bowls; each groove is provided w...

Embodiment 3

[0109] The cross-sectional structure of the anode carbon block of the special-shaped aluminum electrolytic cell with the exhaust channel is as follows: Figure 13 As shown, the A-A surface structure is as Figure 14 As shown, the B-B surface structure is as Figure 15 As shown, the C-C surface structure is as Figure 16 As shown, the D-D surface structure is as Figure 17 As shown, the E-E surface structure is as Figure 18 As shown; the structure is the same as in Embodiment 1, the difference is that two through holes are provided on the transverse groove to communicate with the corresponding groove, and one through hole is provided on the longitudinal groove to communicate with the corresponding groove;

[0110] The height of the top surface of the groove from the top of the anode carbon block is 20-50cm, and the width of the groove is 2.5-3.5cm;

[0111] The cross section of the groove is an inverted triangle, the height is 3-10 cm, and the width of the top surface is 3...

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Abstract

The invention discloses an aluminum electrolytic tank anode carbon block of an irregularly-shaped structure with an exhaust passage and a preparation method thereof. The edge part of a top surface is provided with a chamfer; a row or two rows of carbon bowls are uniformly distributed on the top surface; each row of carbon bowls are longitudinally arranged along the anode carbon block and consists of 3-5 carbon bowls; a groove is formed between the carbon bowls; the bottom of the anode carbon block is provided with a trench; the bottom of the groove is provided with a through hole which is communicated with the trench at the bottom of the anode carbon block. The preparation method comprises the following steps of: preparing the carbon block by using a vibration mould or pressing mould with corresponding bumps by a vibration molding method or a compression molding method; and roasting and then cutting out the trench. The aluminum electrolytic tank anode carbon block of the irregularly-shaped structure with the exhaust passage has the characteristics of simple and convenient preparation process, high working efficiency and the like; and as tested, tank voltage can be reduced by using the anode carbon block, gas produced by an anode is smoothly and uniformly discharged, and influence of gas escape on fluctuation of cathode aluminum liquid is obviously reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis, in particular to an anode carbon block of an aluminum electrolytic cell with a special-shaped structure with an exhaust channel Background technique [0002] For industrial aluminum electrolytic cells, there are two important technical and economic indicators, one is current efficiency, and the other is DC power consumption. Although the concepts of the two indicators are different, they are closely related. The current efficiency CE (%) of aluminum electrolysis and DC power consumption The relationship between W(kWh / t-Al) can be expressed by the following formula: [0003] [0004] where V 平 It is the average cell voltage of aluminum electrolysis. From this formula, it can be seen that every 1% increase in the current efficiency of the electrolytic cell can reduce the DC power consumption by about 150kWh / t aluminum, and at the same time increase the aluminum output by 1%; while...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/12
Inventor 冯乃祥
Owner 冯乃祥
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