CN2811326Y - Prebaked carbon anode for electrolyzing aluminum - Google Patents
Prebaked carbon anode for electrolyzing aluminum Download PDFInfo
- Publication number
- CN2811326Y CN2811326Y CN 200520112369 CN200520112369U CN2811326Y CN 2811326 Y CN2811326 Y CN 2811326Y CN 200520112369 CN200520112369 CN 200520112369 CN 200520112369 U CN200520112369 U CN 200520112369U CN 2811326 Y CN2811326 Y CN 2811326Y
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- CN
- China
- Prior art keywords
- anode
- aluminum
- utility
- model
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 31
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 32
- 239000004411 aluminium Substances 0.000 claims description 35
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 abstract description 17
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 208000020442 loss of weight Diseases 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The utility model relates to a prebaked carbon anode for electrolyzing aluminum. The utility model is characterized in that on the bottom of a prebaked anode carbon block for electrolyzing aluminum, a concave through groove is arranged in the middle part in a width direction. The application of the prebaked carbon anode of the utility model for an aluminum cell adds channels where anodic gas is expelled and shortens the distance that the anodic gas passes through in expelled, which is favourable for the expeling of the anodic gas. Thus, the residence time of the anode gas at the bottom of the anode and the air bubble coverage rate of anode bottom are decreased. Moreover, the boiling of electrolyte around the anode is more uniform, the boiling strength is reduced obviously, and the disturbance to fusant from the gas expelling is reduced. The average swinging of tank voltage is reduced by 2 to 4 mv, and needle shaking is reduced by 10 mv. The stability of aluminum electrolysis production is enhanced, and the efficiency of aluminum electrolysis current is increased by 0.3%. The utility model is favourable for the improvement on other technical economical indexes.
Description
Technical field
Prebaking anode carbon for aluminium electrolysis relates to a kind of prebaking anode carbon for aluminium electrolysis.
Background technology
In the Aluminium Electrolysis process, the aluminum oxide that is dissolved in the ionogen constantly dissociates, and on anode and negative electrode electrochemical reaction takes place, and generates aluminium on negative electrode, generate anodic gas such as carbonic acid gas and carbon monoxide on anode, anodic gas is overflowed around anode with bubble form.The width of anode carbon block has a significant impact the effusion of gas, if anode block is wide, to hinder anodic gas to overflow, prolongation gas rests on the time on the anode, has increased the fraction of coverage of bubble on the anode, causes the ionogen boiling violent, cause the melt fluctuation big, the Aluminium Electrolysis poor stability quickens the molten loss of weight of aluminium, can cause current efficiency to reduce; If the narrow anodic that then can increase of anode block is changed number of times, also increase and change the interference number of times of anode operation the electrolysis of aluminum operation, therefore say that the anodic width has a significant impact Aluminium Electrolysis.The width of anode carbon block is generally 600～800mm both at home and abroad at present, and length is generally 1100～1600mm.
The stability of the big more electrolyzer of the size of anode electrolytic cell length and width reduces, self-roasting tank's production practice prove, the anode width 1600mm anode electrolytic tank production wide or wideer than 1800mm anode is stablized, and, under equal anodic current density, when anode width reaches 2500mm, the production stability extreme difference, cause the long bag of anode easily, the anode cone is overheated, current efficiency reduces, and the major cause that its productive capacity degenerates is because the wide discharge that is unfavorable for anodic gas under the anode bottom of anode.Prebaked-anode type cell also is like this, and along with tankage constantly increases, the corresponding increase of the size of anode carbon block, the discharge of anodic gas be difficulty more.
Summary of the invention
The purpose of this utility model is exactly the deficiency that exists at above-mentioned prior art, a kind of stability condition that guarantees electrolyzer is provided, effectively subtract the fraction of coverage of annotating bubble on the anode, it is violent to eliminate the ionogen boiling, cause the melt fluctuation big, the Aluminium Electrolysis poor stability quickens the molten loss of weight of aluminium, causes current efficiency to reduce the prebaking anode carbon for aluminium electrolysis of reduction problem.
The purpose of this utility model is achieved through the following technical solutions.
Prebaking anode carbon for aluminium electrolysis is characterized in that in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks, the centre on width has the matrix groove.
Prebaking anode carbon for aluminium electrolysis is characterized in that the matrix groove that has in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks is together or the two road grooves that anode bottom surface trisection is had.
Pre-baked carbon anode of the present utility model bottom has the discharge that groove helps anodic gas, the ionogen boiling is more even around the anode, the boiling dynamics obviously reduces, reduce electrolyte flow rate, reduce the disturbance of melt in the electrolyzer, the swing and the pin that reduce bath voltage shake, increase the stability of Aluminium Electrolysis, reduced the chance that " secondary reaction " takes place for negative electrode aluminium liquid and anodic gas, help improving Faradaic current efficient, reduced the residence time and the anode bottom bubble fraction of coverage of anodic gas, helped reducing the bath voltage that anodic gas causes, thereby help reducing bath voltage and save power consumption in the anode bottom.
The application of pre-baked carbon anode of the present utility model on aluminium cell, increase the channel that anodic gas is discharged, shortened the distance of anodic gas discharge process, help the discharge of anodic gas, reduced the residence time and the anode bottom bubble fraction of coverage of anodic gas in the anode bottom, the ionogen boiling is more even around the anode, the boiling dynamics obviously reduces, reduce gas and discharge the disturbance that melt is caused, the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, has improved the stability of Aluminium Electrolysis, it is about 0.3% to improve electrolysis of aluminum current efficiency, and helps improving other technico-economical comparison.
Description of drawings
Structural representation when Fig. 1 the utility model is opened one groove.
Structural representation when Fig. 2 the utility model is opened two road grooves.
Embodiment
Prebaking anode carbon for aluminium electrolysis, in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks 1, open together or the third-class separately wide 5～20mm in two roads the centre on width, the matrix groove 2 of the degree of depth 100～400mm.
The employing machining process is made: 1) select to install suitable charcoal piece processing sawing machine, the size of saw blade and quantity are consistent with required charcoal piece bottom groove; 2) select up-to-standard finished product used for aluminium electrolysis pre-baked anode carbon blocks, handling fixes to charcoal piece processing sawing machine, and the width of charcoal piece should be vertical with saw blade; 3) start sawing machine, slowly at the uniform velocity saw out the groove of desired size in charcoal piece bottom, unclamp anchor clamps, from the sawing machine charcoal piece of hanging oneself away, novel pre-baked carbon anode is made and is finished.
The assembling of aluminium electrolysis pre-baked carbon anode is the same with common anode with the replacing anodic process.
Embodiment 1
The anode carbon block that uses is of a size of 1350 * 850 * 540mm, and anode width is big, because anode width is bigger, anodic gas is difficult for getting rid of, and causes the regular one-tenth thigh of ionogen to spray below anode, and boiling is violent, and melt stability is relatively poor.Wide 15mm is together opened in centre on the width of the anode carbon block bottom of using, the groove of degree of depth 200mm, the ionogen boiling is more even around the aluminium cell anode, the boiling dynamics obviously reduces, the melt fluctuation reduces in the electrolyzer, and the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, improve the stability of Aluminium Electrolysis, improved electrolysis of aluminum current efficiency about 0.3%.
The third-class separately wide 15mm in two roads in centre on the width of the bottom of anode carbon block, the groove of degree of depth 200mm, the ionogen boiling is more even around the anode of aluminium cell, the boiling dynamics obviously reduces, the melt fluctuation reduces in the electrolyzer, and the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, improve the stability of Aluminium Electrolysis, improved electrolysis of aluminum current efficiency about 0.3%.
Embodiment 3
The third-class separately wide 5mm in two roads in centre on the width of the bottom of anode carbon block, the groove of degree of depth 400mm, the ionogen boiling is more even around the anode of aluminium cell, the boiling dynamics obviously reduces, the melt fluctuation reduces in the electrolyzer, the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, the good stability of Aluminium Electrolysis.
Embodiment 3
Wide 20mm is together opened in centre on the width of the bottom of anode carbon block, the groove of degree of depth 100mm, the ionogen boiling is more even around the anode of aluminium cell, the boiling dynamics obviously reduces, the melt fluctuation reduces in the electrolyzer, the swing of bath voltage on average reduces by 2～4mv, and pin shakes and reduces about 10mv, the good stability of Aluminium Electrolysis.
Claims (2)
1. prebaking anode carbon for aluminium electrolysis is characterized in that in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks, the centre on width has the matrix groove.
2. prebaking anode carbon for aluminium electrolysis according to claim 1 is characterized in that the matrix groove that has in the bottom of used for aluminium electrolysis pre-baked anode carbon blocks is together or the two road grooves that anode bottom surface trisection is had.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112369 CN2811326Y (en) | 2005-07-08 | 2005-07-08 | Prebaked carbon anode for electrolyzing aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520112369 CN2811326Y (en) | 2005-07-08 | 2005-07-08 | Prebaked carbon anode for electrolyzing aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811326Y true CN2811326Y (en) | 2006-08-30 |
Family
ID=36937713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520112369 Expired - Lifetime CN2811326Y (en) | 2005-07-08 | 2005-07-08 | Prebaked carbon anode for electrolyzing aluminum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811326Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560547A (en) * | 2010-12-09 | 2012-07-11 | 贵阳铝镁设计研究院有限公司 | Anode carbon block for electrolytic aluminum |
| CN102851701A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Multi-groove multi-hole prebaked anode |
| WO2013034024A1 (en) * | 2011-09-05 | 2013-03-14 | 沈阳北冶冶金科技有限公司 | Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof |
| CN102995060A (en) * | 2011-04-18 | 2013-03-27 | 湖南晟通科技集团有限公司 | Multi-chamber carbon anode |
| CN103668326A (en) * | 2012-09-21 | 2014-03-26 | 贵阳铝镁设计研究院有限公司 | Method for measuring flow velocity of melt in aluminum electrolytic tank |
| CN105256332A (en) * | 2015-11-13 | 2016-01-20 | 湖南创元铝业有限公司 | Pre-baking anode for aluminum electrolysis and aluminum electrolysis cell |
-
2005
- 2005-07-08 CN CN 200520112369 patent/CN2811326Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560547A (en) * | 2010-12-09 | 2012-07-11 | 贵阳铝镁设计研究院有限公司 | Anode carbon block for electrolytic aluminum |
| CN102995060A (en) * | 2011-04-18 | 2013-03-27 | 湖南晟通科技集团有限公司 | Multi-chamber carbon anode |
| CN102995060B (en) * | 2011-04-18 | 2016-01-20 | 晟通科技集团有限公司 | A kind of multi-cell carbon anode |
| CN102851701A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Multi-groove multi-hole prebaked anode |
| CN102851701B (en) * | 2011-07-01 | 2016-07-20 | 湖南晟通科技集团有限公司 | A kind of multiple-grooved multiple-hole prebaked anode |
| WO2013034024A1 (en) * | 2011-09-05 | 2013-03-14 | 沈阳北冶冶金科技有限公司 | Aluminum electrolytic tank anode carbon block of irregularly-shaped structure with exhaust passage and preparation method thereof |
| CN103668326A (en) * | 2012-09-21 | 2014-03-26 | 贵阳铝镁设计研究院有限公司 | Method for measuring flow velocity of melt in aluminum electrolytic tank |
| CN103668326B (en) * | 2012-09-21 | 2016-05-25 | 贵阳铝镁设计研究院有限公司 | Measure the method for aluminium cell melt flow |
| CN105256332A (en) * | 2015-11-13 | 2016-01-20 | 湖南创元铝业有限公司 | Pre-baking anode for aluminum electrolysis and aluminum electrolysis cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiaozuo Wanfang Aluminum Manufacturing Co., Ltd. Assignor: Aluminum Corporation of China Limited Contract fulfillment period: 2008.6.26 to 2013.6.25 Contract record no.: 2009410000109 Denomination of utility model: Treatment method for preparing pre-baking charcoal anode petroleum coke used for aluminium electrolysis Granted publication date: 20060830 License type: Exclusive license Record date: 20090507 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.6.26 TO 2013.6.25; CHANGE OF CONTRACT Name of requester: JIAOZUO WANFANG ALUMINUM CO., LTD. Effective date: 20090507 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150708 Granted publication date: 20060830 |
|
| EXPY | Termination of patent right or utility model |