CN108315766A - The anti-oxidation process of prebaked anode - Google Patents
The anti-oxidation process of prebaked anode Download PDFInfo
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- CN108315766A CN108315766A CN201810364496.9A CN201810364496A CN108315766A CN 108315766 A CN108315766 A CN 108315766A CN 201810364496 A CN201810364496 A CN 201810364496A CN 108315766 A CN108315766 A CN 108315766A
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- prebaked anode
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- aluminium oxide
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a kind of anti-oxidation processes of prebaked anode, it is on the basis of existing prebaked anode in aluminium cell is replaced, pass through the anti-oxidation glue modulated in advance, after proper proportion proportioning being carried out with aluminium oxide, pass through brushing or spraying process, antioxidizing paint is brushed or is sprayed on prebaked anode surface, form it into one layer of fine and close aluminium oxide protective film, aluminium oxide is the necessary article in aluminum electrolysis, aluminum electrolysis will not be impacted, it is also one layer of fine and close protective film simultaneously, the protective film that aluminium oxide is formed has high temperature resistant, resistance to erosion, it is fine and close, smooth characteristic, with good anti-oxidation effect, then program is replaced according to normal prebaked anode to replace anode.After prebaked anode carries out anti-oxidation processing, slag-off phenomenon caused by solving the problems, such as quality of prebaked anode reduces the scaling-off rate of prebaked anode, reduce the carbon residue content in electrolytic cell, steady production technical conditions improve stability of aluminum electrolytic bath indirectly, reduce energy consumption and material consumption.
Description
Technical field：
The present invention relates to a kind of anti-oxidation processes of prebaked anode, belong to aluminum electrolysis technical field.
Background technology：
Aluminum electrolysis is a continuous production, heart of the prebaked anode as aluminium cell, the direct shadow of quality of quality
Ring the influence of aluminum electrolysis.In normal production run, unstable due to quality of prebaked anode, prebaked anode is subjected to high temperature
Afterwards, oxidation slag-off phenomenon is easy tod produce, breeze is fallen into electrolytic cell, is not only increased the energy consumption of aluminum electrolysis, is influenced simultaneously
Electrolyte flow influences the fusing decomposition rate of aluminium oxide, causes the bad phenomenons such as interlocking, while a large amount of breeze,
Be collected in electrolytic cell, can also increase the amount of labour of employee because of sick slot, thus breeze is hundred evils in electrolytic cell and none
Profit, therefore the rate of slag falling of prebaked anode how is reduced, it is on one side, to carry out the anti-of prebaked anode to improve quality of prebaked anode
Oxidation is also a critically important technical process.Before, mostly it is in newly extremely upper slot without the anti-oxidation measure of good prebaked anode
Being verified afterwards using high-temperature electrolysis, it carries out pouring leaching, and operation difficulty is larger, while dangerous also higher, then has the electrolyte after pouring leaching
Layer can fall off quickly, and oxidation-protective effect is poor.
Invention content：
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide a kind of anti-oxidation technique of prebaked anode
Method reduces the scaling-off rate of prebaked anode to solve the problems, such as the slag-off phenomenon caused by quality of prebaked anode, and reduction is fallen
Slag rate reduces the carbon residue content in electrolytic cell, and steady production technical conditions improve stability of aluminum electrolytic bath indirectly, reduce energy consumption
And material consumption.
The present invention is for the technical solution adopted for solving the technical problem：
A kind of anti-oxidation process of prebaked anode, is as follows：
A, anti-oxidation glue and alumina powder are debugged with water according to a certain percentage, held and fixed in container；
B, prebaked anode is poured by steel pawl rear spare；
C, the prebaked anode poured is subjected to cleaning of drying comprehensively with spare high-pressure air hose to its surface, by floating ash or attachment
It cleans out；
D, it is brushed or is sprayed with brush or using airbrush tool to prebaked anode surface, its surface is made to form one layer
The fine and close colloid film with aluminium oxide；
E, by the prebaked anode after brushing or spraying be placed into ventilation dry it is spare；
When F, carrying out anode change, anode scrap is hung out out of electrolytic cell first, the chip off-falling in net electrolytic cell is dragged for, then by oxygen
The new prebaked anode for changing processing is arranged on electrolytic cell, and urgent fixture is closed by insulation material surrounding；
G, new round prebaked anode replacement repeats the above process.
In step, the anti-oxidation glue is by 8~10% Aluminum sol, 40~42% aluminium dihydrogen phosphate, 55~60%
Water and auxiliary agent no more than 1%, mucilage binding liquid made of being reconciled according to a certain percentage；The auxiliary agent be phosphate and
The proportioning of the mixture of alundum (Al2O3), the phosphate and alundum (Al2O3) is phosphate：Alundum (Al2O3)=（55~
65%）：（35~45%）.
In step, the anti-oxidation glue, water, alumina powder are according to 4:1:1 ratio is debugged.
The present invention is that aluminium oxide is adhered to prebake by colloid by brushing or spraying on new prebaked anode before slot
Anode surface forms one layer of fine and close aluminum oxide film, and aluminium oxide is the necessary article in aluminum electrolysis, will not be to aluminium electroloysis
Production impacts, while being also one layer of fine and close protective film, and there is the protective film that aluminium oxide is formed high temperature resistant, resistance to erosion to cause
Close, smooth characteristic has good anti-oxidation effect.
Present invention operation is very easy, can be completed using simple tool, of low cost, and prebaked anode is by anti-oxidation
After coating, the rate of slag falling of prebaked anode can be effectively reduced, extends prebaked anode service life 1~2 day, can not only stablize electrolysis
The operation of slot, can also reduce unit prebaked anode unit consumption 10-20kg/T-Al, and economic benefit is apparent.
The present invention can play the oxidation rate for reducing prebaked anode in aluminium cell, reduce prebaked anode rate of slag falling, improve
The operating status of aluminium cell extends prebaked anode service life, reduces unit capacity consumption amount, reduces scaling-off to aluminium electroloysis life
Electrolytic cell operation stability is mentioned in the influence of production.
The present invention can effectively solve the problems, such as, due to slag-off phenomenon caused by quality of prebaked anode, to reduce the scaling-off of prebaked anode
Rate reduces rate of slag falling, reduces the carbon residue content in electrolytic cell, and steady production technical conditions improve aluminium cell and stablize indirectly
Property, reduce energy consumption and material consumption.
The present invention positive beneficial effect be：
1, easy to operate, it is of low cost.
2, prebaked anode rate of slag falling is reduced, the carbon residue content in electrolytic cell is reduced, stablizes aluminum electrolysis technical conditions.
3, extend the prebaked anode replacement cycle, reduce staff labor intensity.
4, unit prebaked anode unit consumption is reduced, aluminum electrolysis energy consumption is reduced.
Specific implementation mode：
The present invention is made further explanation and description with reference to specific embodiment：
Embodiment：A kind of anti-oxidation process of prebaked anode, is as follows：
A, anti-oxidation glue and alumina powder are debugged with water according to a certain percentage, held and fixed in container；
B, prebaked anode is poured by steel pawl rear spare；
C, the prebaked anode poured is subjected to cleaning of drying comprehensively with spare high-pressure air hose to its surface, by floating ash or attachment
It cleans out；
D, it is brushed or is sprayed with brush or using airbrush tool to prebaked anode surface, its surface is made to form one layer
The fine and close colloid film with aluminium oxide；
E, by the prebaked anode after brushing or spraying be placed into ventilation dry it is spare；
When F, carrying out anode change, anode scrap is hung out out of electrolytic cell first, the chip off-falling in net electrolytic cell is dragged for, then by oxygen
The new prebaked anode for changing processing is arranged on electrolytic cell, and urgent fixture is closed by insulation material surrounding；
G, new round prebaked anode replacement repeats the above process.
In step, anti-oxidation glue be by 8~10% Aluminum sol, 40~42% aluminium dihydrogen phosphate, 55~60% water
And the auxiliary agent no more than 1%, mucilage binding liquid made of being reconciled according to a certain percentage；The auxiliary agent is phosphate and three oxidations
The proportioning of the mixture of two aluminium, the phosphate and alundum (Al2O3) is phosphate：Alundum (Al2O3)=（55~65%）：（35
~45%）.
In step, anti-oxidation glue, water, alumina powder are according to 4:1:1 ratio is debugged.
In the invention, the technology segment not being described in detail is known technology.
The present invention is that aluminium oxide is adhered to prebake by colloid by brushing or spraying on new prebaked anode before slot
Anode surface forms one layer of fine and close aluminum oxide film, and aluminium oxide is the necessary article in aluminum electrolysis, will not be to aluminium electroloysis
Production impacts, while being also one layer of fine and close protective film, and there is the protective film that aluminium oxide is formed high temperature resistant, resistance to erosion to cause
Close, smooth characteristic has good anti-oxidation effect.
Present invention operation is very easy, can be completed using simple tool, of low cost, and prebaked anode is by anti-oxidation
After coating, the rate of slag falling of prebaked anode can be effectively reduced, extends prebaked anode service life 1~2 day, can not only stablize electrolysis
The operation of slot, can also reduce unit prebaked anode unit consumption 10-20kg/T-Al, and economic benefit is apparent.
The present invention can play the oxidation rate for reducing prebaked anode in aluminium cell, reduce prebaked anode rate of slag falling, improve
The operating status of aluminium cell extends prebaked anode service life, reduces unit capacity consumption amount, reduces scaling-off to aluminium electroloysis life
Electrolytic cell operation stability is mentioned in the influence of production.
The present invention can effectively solve the problems, such as, due to slag-off phenomenon caused by quality of prebaked anode, to reduce the scaling-off of prebaked anode
Rate reduces rate of slag falling, reduces the carbon residue content in electrolytic cell, and steady production technical conditions improve aluminium cell and stablize indirectly
Property, reduce energy consumption and material consumption.
Claims (3)
1. a kind of anti-oxidation process of prebaked anode, is as follows：
A, anti-oxidation glue and alumina powder are debugged with water according to a certain percentage, held and fixed in container；
B, prebaked anode is poured by steel pawl rear spare；
C, the prebaked anode poured is subjected to cleaning of drying comprehensively with spare high-pressure air hose to its surface, by floating ash or attachment
It cleans out；
D, it is brushed or is sprayed with brush or using airbrush tool to prebaked anode surface, its surface is made to form one layer
The fine and close colloid film with aluminium oxide；
E, by the prebaked anode after brushing or spraying be placed into ventilation dry it is spare；
When F, carrying out anode change, anode scrap is hung out out of electrolytic cell first, the chip off-falling in net electrolytic cell is dragged for, then by oxygen
The new prebaked anode for changing processing is arranged on electrolytic cell, and urgent fixture is closed by insulation material surrounding；
G, new round prebaked anode replacement repeats the above process.
2. the anti-oxidation process of prebaked anode according to claim 1, it is characterised in that：In step, the oxygen
Change glue be by 8~10% Aluminum sol, 40~42% aluminium dihydrogen phosphate, 55~60% water and auxiliary agent no more than 1%, according to
Mucilage binding liquid made of certain proportion is reconciled；The auxiliary agent is the mixture of phosphate and alundum (Al2O3), the phosphoric acid
The proportioning of ester and alundum (Al2O3) is phosphate：Alundum (Al2O3)=（55~65%）：（35~45%）.
3. the anti-oxidation process of prebaked anode according to claim 1, it is characterised in that：In step, the oxygen
Change glue, water, alumina powder according to 4:1:1 ratio is debugged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810364496.9A CN108315766A (en) | 2018-04-23 | 2018-04-23 | The anti-oxidation process of prebaked anode |
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| CN201810364496.9A CN108315766A (en) | 2018-04-23 | 2018-04-23 | The anti-oxidation process of prebaked anode |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504983A (en) * | 2018-12-28 | 2019-03-22 | 云南云铝润鑫铝业有限公司 | A kind of particular manufacturing craft and method solving blanking point of aluminum electrolytic bath anodic oxidation |
| CN110106529A (en) * | 2019-06-26 | 2019-08-09 | 贵州铝城铝业原材料研究发展有限公司 | A kind of aluminium electrolysis prebaked anode carbon block covers foil anti-oxidation method |
| CN114806231A (en) * | 2022-03-09 | 2022-07-29 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | Pre-baked anode anti-oxidation coating for reducing energy consumption of aluminum electrolysis cell and preparation and application methods thereof |
| CN116515328A (en) * | 2023-05-06 | 2023-08-01 | 遵义铝业股份有限公司 | Anode anti-oxidation coating for aluminum oxide-based aluminum electrolysis, preparation method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063931A (en) * | 1972-03-22 | 1977-12-20 | Foseco International Limited | Protection of carbon electrodes |
| JPS54137412A (en) * | 1978-04-17 | 1979-10-25 | Sumitomo Aluminium Smelting Co | Carbon electrode coated with antiioxidation agent for use inaluminum electrolysis |
| CN1584125A (en) * | 2004-05-27 | 2005-02-23 | 广西师范大学 | Antioxygenation of carbon anodes for aluminum electrolysis, deep antioxygenating layer and its coating method |
| CN103936333A (en) * | 2014-04-21 | 2014-07-23 | 西安建筑科技大学 | High-temperature oxidation resistant coating for aluminum electrolysis cathode roasting and starting processes and preparation method of high-temperature oxidation resistant coating |
| CN104878411A (en) * | 2015-05-25 | 2015-09-02 | 王二体 | Environment-friendly anode coating as well as preparation method and application thereof |
| CN106892642A (en) * | 2015-12-17 | 2017-06-27 | 高伟 | A kind of anode carbon block ORC |
-
2018
- 2018-04-23 CN CN201810364496.9A patent/CN108315766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063931A (en) * | 1972-03-22 | 1977-12-20 | Foseco International Limited | Protection of carbon electrodes |
| JPS54137412A (en) * | 1978-04-17 | 1979-10-25 | Sumitomo Aluminium Smelting Co | Carbon electrode coated with antiioxidation agent for use inaluminum electrolysis |
| CN1584125A (en) * | 2004-05-27 | 2005-02-23 | 广西师范大学 | Antioxygenation of carbon anodes for aluminum electrolysis, deep antioxygenating layer and its coating method |
| CN103936333A (en) * | 2014-04-21 | 2014-07-23 | 西安建筑科技大学 | High-temperature oxidation resistant coating for aluminum electrolysis cathode roasting and starting processes and preparation method of high-temperature oxidation resistant coating |
| CN104878411A (en) * | 2015-05-25 | 2015-09-02 | 王二体 | Environment-friendly anode coating as well as preparation method and application thereof |
| CN106892642A (en) * | 2015-12-17 | 2017-06-27 | 高伟 | A kind of anode carbon block ORC |
Non-Patent Citations (1)
| Title |
|---|
| 朱洪法等: "《无机化工产品手册》", 31 December 2008, 金盾出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504983A (en) * | 2018-12-28 | 2019-03-22 | 云南云铝润鑫铝业有限公司 | A kind of particular manufacturing craft and method solving blanking point of aluminum electrolytic bath anodic oxidation |
| CN110106529A (en) * | 2019-06-26 | 2019-08-09 | 贵州铝城铝业原材料研究发展有限公司 | A kind of aluminium electrolysis prebaked anode carbon block covers foil anti-oxidation method |
| CN114806231A (en) * | 2022-03-09 | 2022-07-29 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | Pre-baked anode anti-oxidation coating for reducing energy consumption of aluminum electrolysis cell and preparation and application methods thereof |
| CN116515328A (en) * | 2023-05-06 | 2023-08-01 | 遵义铝业股份有限公司 | Anode anti-oxidation coating for aluminum oxide-based aluminum electrolysis, preparation method and device |
| CN116515328B (en) * | 2023-05-06 | 2024-05-03 | 遵义铝业股份有限公司 | Anode anti-oxidation coating for aluminum oxide-based aluminum electrolysis, preparation method and device |
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Application publication date: 20180724 |