CN104099640A - Online oxidation prevention method for aluminum electrolytic bath anode - Google Patents
Online oxidation prevention method for aluminum electrolytic bath anode Download PDFInfo
- Publication number
- CN104099640A CN104099640A CN201410365176.7A CN201410365176A CN104099640A CN 104099640 A CN104099640 A CN 104099640A CN 201410365176 A CN201410365176 A CN 201410365176A CN 104099640 A CN104099640 A CN 104099640A
- Authority
- CN
- China
- Prior art keywords
- anode
- electrolytic bath
- aluminium cell
- aluminum
- aluminum oxide
- 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.)
- Granted
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses an online oxidation prevention method for an aluminum electrolytic bath anode. According to the method, coal tar is heated, and then is uniformly blended with aluminium oxide according to a certain volume ratio, and the mixture is uniformly sprayed on the surface of the anode of an aluminum electrolytic bath, or the heated coal tar and the aluminium oxide are alternately and uniformly sprayed onto the surface of the anode; then the anode is directly mounted in the aluminum electrolytic bath, and is heated and baked by using the own heat of the aluminum electrolytic bath, during baking, liquid constituents in the carbon tar volatilize, and residual substances are combined with the aluminium oxide to from a coked substance which is adhered to the surface of the anode so as to form an oxidation prevention protective layer. Since the refractoriness of the aluminium oxide is higher than 1,800 DEG C, the anode can be prevented from being oxidized in the electrolytic bath at a high temperature, meanwhile, the aluminium oxide is a raw material of aluminum electrolysis production and enters the electrolytic bath along the reduction of the consumption of the anode, and an electrolyzation production process is not affected. The online oxidation prevention method for the aluminum electrolytic bath anode can truly lower the ton aluminum carbon consumption of the aluminum industry, reduce the oxidation of the anode, lower the loss of steel claws, improve the rate of recovery of phosphorus pig iron, effectively enlarge the effective working area of the anode, reduce the carbon consumption of the anode and lower the cost of aluminum per ton.
Description
Technical field
The present invention relates to the electrolyzer in Aluminum Electrolysis Production, be specifically related to the online anti-oxidation method of a kind of aluminium cell anode.
Background technology
Electrolyzer in existing Aluminum Electrolysis Production in the time of normal work, due to crust-breaking & baiting in groove and aluminium flowing-out mouth position anode block exposed, oxidative phenomena especially severe.Taking 350KA electrolyzer as example, in 48 anode groups of every electrolyzer, having 26 anodes can be exposed at this position, cause aluminium electrolyzing carbon consumption to increase, effectively conductive cross-sectional area reduces, and this position anodic oxidation is also the major cause that causes anode scrap irregularity and change pawl phenomenon, thereby, the oxidation of aluminium cell inner anode is the technical barrier always existing in aluminium industry, anxious to be resolved.
Summary of the invention
Technical problem to be solved by this invention is: for above-mentioned the deficiencies in the prior art, provide a kind of aluminium cell anode online anti-oxidation method.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: the online anti-oxidation method of a kind of aluminium cell anode, the method is that coal tar is heated to 50-90 DEG C, 1:0.3-0.5(coal tar by volume again: aluminum oxide) mix with aluminum oxide, evenly be sprayed into the anode surface of aluminium cell, coating thickness is 1-4mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
Another kind of technical scheme of the present invention is: the online anti-oxidation method of a kind of aluminium cell anode, the method is that coal tar is heated to after 50-90 DEG C, 1:0.3-0.5 and aluminum oxide are alternately evenly sprayed into the anode surface of aluminium cell by volume, and coating thickness is 1-4mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
Above-mentioned submitted to tubing flow displacement painting refers to first the coal tar after heating is evenly sprayed on to anode surface, again aluminum oxide is evenly sprayed on to coal tar surface, gently press after anode surface with pressing plate, then the coal tar after heating is evenly sprayed on to alumina surface, again aluminum oxide is evenly sprayed on to coal tar surface, then gently press with pressing plate, so repeatedly alternately until the coating thickness of anode surface is 1-4mm.
So, because aluminum oxide refractoriness is greater than 1800 DEG C, can under electrolyzer hot environment, protect anode not to be oxidized, the starting material that simultaneous oxidation aluminium is Aluminium Electrolysis enter electrolyzer in anode decline consumption process, on electrolysis production technique without impact.
Present method is manufactured protective layer production material cost used, and very (aluminum oxide is electrolytic aluminium factory raw materials for production, needs aborning to add electrolyzer, so the aluminum oxide that present method is used finally also adds electrolyzer aluminum oxide cost to ignore low ignoring.Coal tar is the by-product producing in electrolytic aluminium factory charcoal element system production process, cheap) only need to drop into the facility of spraying-and-heating and artificial on a small quantity, carrying out electrolysis of aluminum enterprise uses, to practical reduction aluminium industry ton aluminium carbon consumption, reach minimizing anodic oxidation, reduce the loss of steel pawl, put forward the rate of recovery of phosphoric pig iron, reduce the guide rod group rate that rolls off the production line, reduce the fluctuation that primary aluminum quality causes because changing pawl, improve the effective working area of anode, minimizing anode carbon consumption, a reduction ton aluminium cost are of great significance, and its economic benefit and social benefit have a high potential.To produce 500000 tons of electrolytic aluminium factories per year as example:
1. reduce 0.5kg consumption according to phosphorus pig iron ton aluminium, 540,000 tons of annual value of production can reduce 270 tons of consumption every year, and according to 4200 yuan of calculating per ton, only this year produces 113.4 ten thousand yuan of economic benefits;
Anode scrap regular after, reduce carbon consumption every day and exceed 2 tons, according to the 2200 yuan of calculating per ton of anode scrap carbon piece, this produces 160.6 ten thousand yuan of economic benefits every year;
3. annual steel pawl renewal amount more than 1850, reduces steel pawl and scraps 360, and 1600 yuan of steel pawl and blast welding block list combination meters, scrap rear residual value and be less than 500 yuan, only this annual 40.7 ten thousand yuan of economic benefit that produce.
Above data show, from economic benefit, can save every year 314.7 ten thousand yuan, have not only reduced ton aluminium charcoal consumption, direct saving the production cost of enterprise, reduced the refuse (breeze) of enterprise, useless gaseous emission simultaneously.
Embodiment
Embodiment 1
Coal tar is heated to 50 DEG C, then 1:0.3 and aluminum oxide mix by volume, are evenly sprayed into the anode surface of aluminium cell, coating thickness is 1mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
Embodiment 2
Coal tar is heated to after 70 DEG C, and 1:0.4 and aluminum oxide are alternately evenly sprayed into the anode surface of aluminium cell by volume, and coating thickness is 3mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
Embodiment 3
Coal tar is heated to 90 DEG C, then 1:0.5 and aluminum oxide mix by volume, are evenly sprayed into the anode surface of aluminium cell, coating thickness is 4mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
Claims (3)
1. the online anti-oxidation method of aluminium cell anode, is characterized in that, the method is that coal tar is heated to 50-90 DEG C, then 1:0.3-0.5 and aluminum oxide mix by volume, are evenly sprayed into the anode surface of aluminium cell, and coating thickness is 1-4mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
2. the online anti-oxidation method of aluminium cell anode, is characterized in that, the method is that coal tar is heated to after 50-90 DEG C, and 1:0.3-0.5 and aluminum oxide are alternately evenly sprayed into the anode surface of aluminium cell by volume, and coating thickness is 1-4mm; Anode after spraying is directly installed in aluminium cell; anode utilizes aluminium cell self heat in 24h, to add hot baked in 880-920 DEG C; liquid composition volatilization in the process of curing in charcoal tar, surplus materials is combined with aluminum oxide and is formed carbonizing matter viscous at anode surface formation protection against oxidation layer.
3. the online anti-oxidation method of a kind of aluminium cell anode as claimed in claim 2, it is characterized in that, in the process that the coal tar after described heating and aluminum oxide alternately spray, after coal tar and aluminum oxide after the complete once heating of every spraying, gently press anode surface with pressing plate, then carry out spraying next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365176.7A CN104099640B (en) | 2014-07-29 | 2014-07-29 | Online oxidation prevention method for aluminum electrolytic bath anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365176.7A CN104099640B (en) | 2014-07-29 | 2014-07-29 | Online oxidation prevention method for aluminum electrolytic bath anode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104099640A true CN104099640A (en) | 2014-10-15 |
| CN104099640B CN104099640B (en) | 2017-01-25 |
Family
ID=51668168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410365176.7A Active CN104099640B (en) | 2014-07-29 | 2014-07-29 | Online oxidation prevention method for aluminum electrolytic bath anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104099640B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215855A (en) * | 2017-06-20 | 2017-09-29 | 中南大学 | A kind of equipment for the preparation method and its use for encrypting anode carbon block |
| 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 |
| CN114921816A (en) * | 2022-04-29 | 2022-08-19 | 河南和成无机新材料股份有限公司 | Energy-saving and consumption-reducing method for aluminum electrolytic cell |
| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435086A (en) * | 2008-12-05 | 2009-05-20 | 河南神火铝业股份有限公司 | Method for manufacturing anode protection ring |
| CN103184474A (en) * | 2011-12-31 | 2013-07-03 | 湖南晟通科技集团有限公司 | Preparation method of anode protection ring |
-
2014
- 2014-07-29 CN CN201410365176.7A patent/CN104099640B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101435086A (en) * | 2008-12-05 | 2009-05-20 | 河南神火铝业股份有限公司 | Method for manufacturing anode protection ring |
| CN103184474A (en) * | 2011-12-31 | 2013-07-03 | 湖南晟通科技集团有限公司 | Preparation method of anode protection ring |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215855A (en) * | 2017-06-20 | 2017-09-29 | 中南大学 | A kind of equipment for the preparation method and its use for encrypting anode carbon block |
| 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 |
| CN114921816A (en) * | 2022-04-29 | 2022-08-19 | 河南和成无机新材料股份有限公司 | Energy-saving and consumption-reducing method for aluminum electrolytic cell |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104099640B (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099640B (en) | Online oxidation prevention method for aluminum electrolytic bath anode | |
| CN102268689B (en) | Titanium-based oxide acid resistant anode and preparation method thereof | |
| CN100580146C (en) | Method for producing one-dipping two-baking anode carbon block | |
| CN100465349C (en) | Aluminium electrolysis cathode with titanium diboride coating and preparation process thereof | |
| CN103173790B (en) | Carbon annode coating, the carbon annode using this coating and this preparation method for coating | |
| CN108315766A (en) | The anti-oxidation process of prebaked anode | |
| CN102304725B (en) | Electrolytic cathode containing titanium boride-carbon coating, and preparation method thereof | |
| CN102912277B (en) | Cored wire for electric arc spraying | |
| CN105330159B (en) | A kind of glaze and its processing method of coke oven door liner tile | |
| CN103937368A (en) | Anti-corrosive wear-resisting patching material | |
| CN102500533B (en) | Method for coating corrosion-resistant paint on surface of steel | |
| CN1327982C (en) | Method for preparing metal ceramic gradient coated steel plate by self-stretching continuous mill | |
| CN108314910A (en) | A kind of prebaked anode in aluminium cell antioxidizing paint | |
| CN104388938A (en) | Electrochemical polishing liquid for aluminum alloy welding wire and electrochemical polishing method | |
| CN204491005U (en) | Electrolytic aluminum cathode collector bar | |
| CN104005056A (en) | Method for preparing electrolytic aluminium carbon anode protective coating | |
| CN207760439U (en) | Aluminium section bar coloring system | |
| CN101586243B (en) | Hot rolled plate hydrochloric acid pickling corrosion inhibition accelerator | |
| CN102399457B (en) | Corrosion-resistant coating and preparation method and using method thereof | |
| CN105350031A (en) | Plasma beam chromium plating technology for piston rod of hydraulic prop | |
| CN102492319B (en) | A kind of corrosion resistant coating, its preparation method and using method | |
| CN103936398A (en) | Method for preparing ceramic floor by utilizing fly ash | |
| Fengqin et al. | Applications of New Structure Reduction Cell Technology in Chalco’s Smelters | |
| CN108754539A (en) | Using aluminum electrolytic residual electrode little particle as the prebaked anode roasting technique of filler material | |
| CN207702989U (en) | A kind of abrasion-proof sintering is by mineral blowtank liner plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 410000, Hunan Changsha high tech Development Zone torch city MO group north seven floor Patentee after: Hunan Zhongda times Technology Co., Ltd. Address before: 410012, Changsha five high tech Development Zone, torch City, Hunan, Changsha, North building, MO Patentee before: CHANGSHA ZHONGDA TIMES ELECTRONIC TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190111 Address after: 410000 Yuelu District Yuelu street, Changsha, Hunan Province, 1 left 131 rooms of R & D headquarters of Central South University Science Park. Patentee after: Hunan leader Intelligent Technology Co., Ltd. Address before: 410000 North 7th Floor of MO Group in Torch City, Changsha High-tech Development Zone, Hunan Province Patentee before: Hunan Zhongda times Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: No. 32, Yulian Industrial Park, No. 32, Yulian District, Hunan Province Patentee after: Hunan lidar Intelligent Technology Co., Ltd Address before: 410000 Yuelu District Yuelu street, Changsha, Hunan Province, 1 left 131 rooms of R & D headquarters of Central South University Science Park. Patentee before: HUNAN LIDEER INTELLIGENT TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |