CN102433571B - Quick minor repair method for aluminum cell - Google Patents
Quick minor repair method for aluminum cell Download PDFInfo
- Publication number
- CN102433571B CN102433571B CN201010295401.6A CN201010295401A CN102433571B CN 102433571 B CN102433571 B CN 102433571B CN 201010295401 A CN201010295401 A CN 201010295401A CN 102433571 B CN102433571 B CN 102433571B
- Authority
- CN
- China
- Prior art keywords
- cell
- artificial
- cathode
- legs
- carbon block
- 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.)
- Active
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008439 repair process Effects 0.000 title claims abstract description 11
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 239000003610 charcoal Substances 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 11
- 210000005056 cell body Anatomy 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000011449 brick Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 239000002562 thickening agent Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000005465 channeling Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 210000002478 hand joint Anatomy 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a quick minor repair method for an aluminum cell. The method comprises the following steps of: removing an artificial extending leg over the cathode carbon block surface of the aluminum cell and an artificial extending leg 150 millimeters under the cathode block surface to ensure a good construction foundation for a wound surface after removing; tying carbon paste once again, wherein each re-tied artificial extending leg is higher than the horizontal joint of a lateral composite carbon block and is 30-50 millimeters higher than the an aluminum liquid horizontal line, so that early damage of a hearth is prevented before growth; and replacing the lateral carbon block of which the lifting amount is more than or equal to 15 millimeters, and leveling by using refractory bricks or casting materials below a position where the lateral carbon block is replaced to recover the designed elevation. Compared with the prior art, the quick minor repair method has the advantages that: judgment of small damages is not required, so that a cell cathode is repaired quickly, a cell body is further prevented from being oxidized, and precious time is won for reducing the cell shutdown loss; and the secondary startup success rate is ensured, leakage of an aluminum liquid after the startup of an electrolyzing cell is avoided, restart after overhaul of the electrolyzing cell is not required, the maintenance cost is reduced greatly, the cell shutdown time is shortened, the electrolyzing cell can be put into production quickly, and great economic benefit is produced.
Description
Technical field
The invention belongs to metallurgy industry aluminium cell service technique field, particularly a kind of electrolyzer Quick minor repair method.
Background technology
Because electrolyzer usually can be forced to stop groove because of rationing the power supply, repair the factors such as bus in process of production; the in the situation that of not growing (generally in 1 year) in the production time; cell body liner is substantially intact; cathode carbon pieces is substantially without breakage, crackle, protuberance phenomenon; around artificial stretch one's legs and side wall carbon block without obvious and a large amount of surperficial aliquation, crackle, peel off situation, be referred to as non-breakage and stop groove.Now, be by electrolyzer restarting, there are two kinds of situations.The first, under this condition, directly start,, when starting, just probably there is aluminium liquid seepage in artificial stretching one's legs owing to having subsurface defect and being subject to oxidative attack around, and the chance of success that opens groove is less.The second, after overhaul, restart again.This can make the cost of overhaul greatly increase, and extends and stop the groove time, to producing, causes huge loss.
Summary of the invention
A kind of Quick minor repair method for aluminum cell is provided, to solve non-damaged aluminium cell in prior art, stops after groove, as directly carried out restarting, start success ratio low, as restarted again after overhaul, the technical problem that cost increases greatly.
the present invention is by the following technical solutions:
A kind of Quick minor repair method for aluminum cell, aluminium electrolytic cell cathode is substantially intact, before construction, need not do carefully judgement to the damaged situation of groove negative electrode, and directly by electric tank cathode charcoal piece surface with upper part artificial stretch one's legs and cathode carbon pieces surface under artificial the stretching one's legs of the 150 ㎜ degree of depth all exclude, guarantee to exclude the rear surface of a wound and there is good construction basis.
Again prick solid carbon paste, artificial stretching one's legs heavily pricked height higher than sidepiece activated carbon composite piece horizontal joint, simultaneously higher than more than aluminum liquid horizontal line 30 ~ 50 ㎜, guarantees, before stove side does not grow up to, early damage does not occur.
The upper side wall carbon block of the amount of lifting >=15 ㎜ is changed, is changed the position of side wall carbon block, it under with refractory brick or mould material levelling, recovery designed elevation.
To the groove of distortion, along plate, to repair and stiffening web processing.
1, artificial stretching one's legs excluded Depth determination and pricked solid constructional method
At present, overhaul electrolyzer is point seven layers of ramming to the bundle solid method around stitching, because the main forms of electrolyzer lateral part breakage is: 1. stick with paste the crack producing aborning around between cathode carbon pieces.2. the artificial surface of stretching one's legs comes off.3. aliquation, folder aluminium, folder ionogen between around sticking with paste.4. side wall carbon block erosion defect.5. side wall carbon block and the crack producing aborning between thickener of stretching one's legs.Therefore the reforming key point of electrolyzer sidepiece is just dropped on to artificial stretching one's legs above, in theory, as long as we exclude the degree of depth of 50 ~ 100 ㎜, it is used to thickener ramming again.But, cathode carbon pieces suffers erosion in operational process, wash away, the effect of thermal stresses, oxygenizement, the damage of channeling process etc., cause artificial stretching one's legs to form hidden danger with negative electrode combining site, aliquation or oxidation within the scope of most of cell surface 80 ㎜, make bonding part without good basis, therefore we by channeling depth design more than cathode carbon pieces surface artificial stretch one's legs and cathode carbon pieces surface under the degree of depth of 150 ㎜, effective like this ramming matrix that guaranteed, and can find in time buried defect in channeling process, impaired sidepiece brick structures and side wall carbon block can be repaired simultaneously, guaranteed transformation reliability.On the other hand, retain to greatest extent former block and pricked body, guaranteed the economy of transformation, for restarting has reduced cost pressure.
Prick solid constructional method, after groove base heats, in order to reduce the quantity of thickener heating installation, shorten the interval time of each layer operation, rationalization's construction, guarantees construction quality, adopts take cell body longitudinal cenlerline as boundary, divides to the left and right two sections of methods of carrying out ramming.Before every layer of bundle is solid, in construction surface, spray coal tar, during ramming, first with board-like tup, flatten, then use square hammer tamping, finally with plum blossom tup, will stick with paste the surperficial hacking of layer.Every layer paving stick with paste before, clean surperficial cold paste, and with blowtorch by suitable surface heated baking.Two sections of the left and right seam of sticking with paste layer should slope at 45 °.Make blast firm by ramming between 0.55-0.7Mpa, during ramming, strictly control every layer thickness, with model inspection, strike off, tup moves overlapping 2/3 in working direction, and row and row are overlapping 1/2, and two come and go back and forth, makes to make firm by ramming that body is smooth, closely knit, homogeneous.The paste layer of respectively making hand joint firm by ramming all will overlap 100 ㎜ mutually.
2, artificial stretching one's legs heavily pricked determining of height
Artificial stretch one's legs height as lower than liquid aluminum, aluminium liquid is easier to from side wall carbon block and stretches one's legs to leak down between thickener.While is because current sidepiece composite block seam is also substantially in same position, and seam crossing also easily produces and leaks aluminium.Therefore, by artificial stretch one's legs be highly defined as exceeding aluminum liquid horizontal face 30-50 ㎜ more than, make aluminium liquid be difficult for leak.
3, the Demands and Measures of the roasting groove temperature of sidepiece transformation
Before restarting, whole liner, in cold conditions, owing to being Hot-rolling process, therefore must heat pricking solid position, and conventionally the roasting groove of overhaul is that heating piece is inserted to the vertical seam of negative electrode, groove is covered with tarpaulin to laser heating 10
~after 15 hours, body to be pricked meets the requirements of technological temperature, but for sidepiece transformation repairing, the one, expend the too many time and heat, unfavorable to repairing progress, the 2nd, heating piece is placed on sidepiece, and heat leakage is large, can not effectively improve Heating temperature.Adopting the patent No. is 200710077808.x heating unit, 5
~within 8 hours, can complete sidepiece heating, Heating temperature homogeneous, 10 ~ 15 ℃ of each measurement point temperature extreme differences, 80 ~ 100 ℃ of medial temperatures, and more than saturating 300 ㎜ of heat biography, can meet the requirement of pricking solid construction completely.
the present invention compared with prior art, has the following advantages:
The present invention completes non-breakage and stops the repairing of groove aluminium cell with speed faster, do not need to carry out thinner damaged situation judgement, prevents that cell body is further oxidized on the one hand, stops groove loss and wins the quality time on the other hand for reducing.
It guaranteed restarting success ratio, avoided aluminium liquid seepage after electrobath start, restarts after need not waiting electrolytic cell overhaul again again, the cost of overhaul is reduced greatly, and shortened and stopped the groove time, electrolyzer can be put into production very soon, produced larger economic benefit.
embodiment:
Whole electrolysis bath circumference artificial stretching one's legs are excluded again to the solid carbon paste of bundle, and local damage side wall carbon block is processed.Cathode carbon pieces surface with upper part artificial stretch one's legs and cathode carbon pieces surface under artificial the stretching one's legs of the 150 ㎜ degree of depth all exclude, guarantee to exclude the rear surface of a wound and there is good construction basis.Again prick solid carbon paste, the artificial heavily bundle of stretching one's legs, highly for higher than sidepiece activated carbon composite piece horizontal joint, simultaneously higher than more than aluminium horizontal plane 30-50 mm, is guaranteed, before stove side does not grow up to, early damage does not occur.
Prick solid constructional method, after groove base heats, in order to reduce the quantity of thickener heating installation, shorten the interval time of each layer operation, rationalization's construction, guarantees construction quality, adopts take cell body longitudinal cenlerline as boundary, divides to the left and right two sections of methods of carrying out ramming.Before every layer of bundle is solid, in construction surface, spray coal tar, during ramming, first with board-like tup, flatten, then use square hammer tamping, finally with plum blossom tup, will stick with paste the surperficial hacking of layer.Every layer paving stick with paste before, clean surperficial cold paste, and with blowtorch by suitable surface heated baking.Two sections of the left and right seam of sticking with paste layer should slope at 45 °.Make blast firm by ramming between 0.55-0.7Mpa, during ramming, strictly control every layer thickness, with model inspection, strike off, tup moves overlapping 2/3 in working direction, and row and row are overlapping 1/2, and two come and go back and forth, makes to make firm by ramming that body is smooth, closely knit, homogeneous.The paste layer of respectively making hand joint firm by ramming all will overlap 100 ㎜ mutually.
The amount of lifting on side wall carbon block >=15 ㎜ will change, and changes the position of side wall carbon block, under it, with refractory brick or mould material levelling, recovers designed elevation.
To the groove of distortion, along plate, to repair and stiffening web processing.
Claims (1)
1. a Quick minor repair method for aluminum cell, it is characterized in that: stretched one's legs with upper part artificial in electric tank cathode charcoal piece surface and cathode carbon pieces surface under artificial the stretching one's legs of the 150 ㎜ degree of depth all exclude, again prick solid carbon paste, artificial stretching one's legs heavily pricked height higher than sidepiece activated carbon composite piece horizontal joint, simultaneously higher than aluminum liquid horizontal line 30 ~ 50 ㎜, the upper side wall carbon block of the amount of lifting >=15 ㎜ is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010295401.6A CN102433571B (en) | 2010-09-29 | 2010-09-29 | Quick minor repair method for aluminum cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010295401.6A CN102433571B (en) | 2010-09-29 | 2010-09-29 | Quick minor repair method for aluminum cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102433571A CN102433571A (en) | 2012-05-02 |
| CN102433571B true CN102433571B (en) | 2014-05-07 |
Family
ID=45981913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010295401.6A Active CN102433571B (en) | 2010-09-29 | 2010-09-29 | Quick minor repair method for aluminum cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102433571B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514010B (en) * | 2013-09-30 | 2018-03-16 | 林州市林丰铝电有限责任公司 | A kind of large scale electrolytic cell restarting is locally stretched one's legs the method for light maintenance |
| RU2629421C1 (en) * | 2016-11-14 | 2017-08-29 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Hot repair method of aluminium electrolyser bottom local destructions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670257A (en) * | 2004-12-27 | 2005-09-21 | 沈阳铝镁设计研究院 | Lining structure of aluminium electrolytic bath |
| CN1900373A (en) * | 2006-05-24 | 2007-01-24 | 中国铝业股份有限公司 | Small repairing method for aluminum electrolytic bath cathode inner lining damage |
| CN101270483A (en) * | 2007-03-22 | 2008-09-24 | 山西华圣铝业有限公司 | Mending and ramming method for after reigniting electrolytic tank and clearing tank |
-
2010
- 2010-09-29 CN CN201010295401.6A patent/CN102433571B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670257A (en) * | 2004-12-27 | 2005-09-21 | 沈阳铝镁设计研究院 | Lining structure of aluminium electrolytic bath |
| CN1900373A (en) * | 2006-05-24 | 2007-01-24 | 中国铝业股份有限公司 | Small repairing method for aluminum electrolytic bath cathode inner lining damage |
| CN101270483A (en) * | 2007-03-22 | 2008-09-24 | 山西华圣铝业有限公司 | Mending and ramming method for after reigniting electrolytic tank and clearing tank |
Non-Patent Citations (2)
| Title |
|---|
| 200KA预焙槽的小修生产实践;周虹等;《青海科技》;20071119;第14卷(第5期);第60页左栏15-19行 * |
| 周虹等.200KA预焙槽的小修生产实践.《青海科技》.2007,第14卷(第5期),59-61. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102433571A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100529192C (en) | Small repairing method for aluminum electrolytic bath cathode inner lining damage | |
| CN102504837B (en) | Synchronous cutting-off and unroofing repair method for coke side oven head of large-scale coke oven machine | |
| CN105332004A (en) | Online repair method for local damage of aluminum electrolytic cell cathode | |
| CN102433571B (en) | Quick minor repair method for aluminum cell | |
| CN101957139A (en) | Furnace lining repairing technology | |
| CN1900369A (en) | Small repair secondary roasting starting method of pre-roasting anode aluminum electrolytic bath | |
| CN203668524U (en) | Heat preserved electrolytic tank | |
| CN102443685B (en) | Method for constructing middle trough lining of vacuum chamber of vacuum circulating degasification furnace | |
| CN205893410U (en) | Can large -scale prebaked anode electrolysis trough of on line light maintenance formula based on separation piece | |
| CN101270483B (en) | Mending and ramming method for after reigniting electrolytic tank and clearing tank | |
| CN108301023A (en) | A kind of online minor repair method of 300/380KA large-scale pre-baked cells | |
| CN201770785U (en) | Electrical heating and roasting preheating electrolysis bath | |
| CN101886274B (en) | Electric heating roasting preheating electrolytic bath and cleaning and roasting method | |
| CN213865903U (en) | Water-cooling combined device for replacing wall of glass melting furnace | |
| CN107083462B (en) | A kind of blast furnace cooling stave and its processing technology that multilayer is cooling | |
| CN204097578U (en) | Electrolyzer | |
| CN102041525A (en) | Calcination method of heterotype cathode electrolytic cell | |
| CN210237674U (en) | Masonry structure of RH stove lower part groove | |
| CN206428145U (en) | Brick more changing device is tied up for large-tonnage melting furnaces tank block | |
| CN205170989U (en) | Adopt cold smashing and stick with paste whole fashioned electrolysis trough furnace structure | |
| CN1696352A (en) | Method for repairing liner on side of electrolytic tank without stopping the tank | |
| CN104514010B (en) | A kind of large scale electrolytic cell restarting is locally stretched one's legs the method for light maintenance | |
| CN106630550A (en) | Brick binding operation method for tank wall brick of large-tonnage melting furnace | |
| CN102230196A (en) | Method for preventing bottom of magnesium electrolysis cell from crusting | |
| CN108914160A (en) | A kind of large-scale pre-baked cell is in lines mending method |
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 |