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Method for ensuring volume density of aluminium electrolysis carbon anode

A technology of volume density and carbon anode, which is applied in the field of ensuring the volume density of aluminum electrolytic carbon anode, which can solve the problems of unsatisfactory volume density index of carbon anode and affect the quality of the anode, so as to achieve high volume density index, good anode quality, and increase the bulk density Effect

Inactive Publication Date: 2010-06-02
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bulk density index of the carbon anode produced by the above method is not ideal, which affects the improvement of the quality of the anode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The average volatile content of 1# petroleum coke is 8%, and the average volatile content of 2# petroleum coke is 11%. The proposed petroleum coke formula is: 1#:2#=1:1; 1#:2#=2: 3; The average volatile content of formula 1 is 9.5%, and the average volatile content of formula 2 is 9.8%. In combination with trace element requirements, formula 2 is finally selected as the final formula for production. The batching operation is carried out in the designated warehouse by the grab crane according to the operation requirements. The grabbing requires 4 to 5 times, and the grabbing height is more than 1.5m, and it is brought into the production process after being mixed evenly. The produced carbon anode has a density of 1.57g / cm 3 .

Embodiment 2

[0012] The average value of the volatile content of 1# petroleum coke is 9%, and the average value of volatile content of 2# petroleum coke is 13%. The proposed formulation of petroleum coke is: 1#:2#=1:1; 2; The average volatile content of formula 1 is 11%, and the average volatile content of formula 2 is 10.6%. Combined with trace element requirements, formula 2 is finally selected as the final formula for production. The batching operation is carried out in the designated warehouse by the grab crane according to the operation requirements. The grabbing requires 4 to 5 times, and the grabbing height is more than 1.5m, and it is brought into the production process after being mixed evenly. The produced carbon anode had a density of 1.58.

Embodiment 3

[0014] The average volatile content of 1# petroleum coke is 8%, and the average volatile content of 2# petroleum coke is 11%. The proposed petroleum coke formula is: 1#:2#=1:1; 1#:2#=2: 3; The average volatile content of formula 1 is 9.5%, and the average volatile content of formula 2 is 9%. In combination with trace element requirements, formula 2 is finally selected as the final formula for production. The batching operation is carried out in the designated warehouse by the grab crane according to the operation requirements. The grabbing requires 4 to 5 times, and the grabbing height is more than 1.5m, and it is brought into the production process after being mixed evenly. The produced carbon anode has a density of 1.56g / cm 3 .

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Abstract

The invention discloses a method for ensuring the volume density of an aluminium electrolysis carbon anode, and relates to an improvement on a method for producing a carbon anode for aluminium electrolysis. The method is characterized in that when raw materials are mixed in the production process of the aluminium electrolysis carbon anode, the volatile component in the mixture is controlled at 9 to 11 percent. The method of the invention achieves the aim of improving the volume density of the anode by controlling the volatile component of petroleum coke, achieves the aim of improving the bulk density and granule stability of the raw materials by effectively controlling the volatile component in the mixed raw materials so as to improve the density of the raw blank, and can reasonably utilize the petroleum coke resources; and the produced carbon anode has the advantages of high volume density index, good quality of the anode, and simple and feasible operation.

Description

technical field [0001] A method for ensuring the volume density of an aluminum electrolytic carbon anode relates to an improvement in a production method of a carbon anode for aluminum electrolysis. Background technique [0002] Carbon anode for aluminum electrolysis is a kind of porous material, and its volume density directly affects other physical and chemical properties of the anode. The volume of the anode with small particle formula is generally 1.5-1.6g / cm 3 , the large particle formula anode is slightly lower. The common ways to ensure the bulk density of the anode are: (1) Reasonably select the production formula; (2) Stabilize the Blaine value of the fine powder; (3) Improve the plasticity of the paste; (4) Ensure the molding temperature. In the production process, in order to prevent the tank furnace from coking and increase the actual yield of raw materials, the volatile content of petroleum coke raw materials is generally controlled within a wide range, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/12
Inventor 李德坤郝永琴李莹栾海孙丽贞
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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