CN100491599C - Online middle repairing method for electrolytic bath side part inner lining - Google Patents
Online middle repairing method for electrolytic bath side part inner lining Download PDFInfo
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- CN100491599C CN100491599C CNB2006100990581A CN200610099058A CN100491599C CN 100491599 C CN100491599 C CN 100491599C CN B2006100990581 A CNB2006100990581 A CN B2006100990581A CN 200610099058 A CN200610099058 A CN 200610099058A CN 100491599 C CN100491599 C CN 100491599C
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- electrolytic bath
- ionogen
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- electrolyte
- laying
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003610 charcoal Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000002362 mulch Substances 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- -1 sodium aluminum fluoride Chemical compound 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
An electrolytic bath sideliner on-line second line maintenance method relates to aluminium cell maintenance method. It includes 1, adjusting electrolyte aluminum liquid horizontal total height to 35-15cm; 2, adjusting bath voltage to 1.8-5.5 v; 3, keeping cell temperature at 850-1100 degree centigrade; 4, pressing one barrier layer between electrolyte and furnace side; 5, using pneumatic tools to clean electrolytic bath side covered material, electrolyte furnace side, residuary side liner material, depth reaching 20-45cm, whole side being cleaned; 6, laying single-layer carbonaceous paste on cleaned interface with thickness of 1-10cm; 7, using charcoal block or carborundum block laying side of carbonaceous paste; 8, recovering production according to managing method after starting up electrolytic bath. Said invented method can replace whole sideliner material without electrolytic bath stopping operation.
Description
Technical field
The method of repairing during a kind of electrolytic bath side part inner lining is online relates to a kind of method for maintaining of aluminium cell, can realize the lateral lining material of electrolyzer breakage is carried out whole renewals under the situation of not stopping groove.
Technical background
Electrolytic process is the method for present unique suitability for industrialized production metallic aluminium.This method adopts the fused sodium aluminum fluoride as ionogen, makes anode and negative electrode with carbon material, and the lateral lining material of burner hearth generally adopts carbonaceous material or carborundum material.Because the fused sodium aluminum fluoride has extremely strong corrodibility, for guaranteeing the intact of lateral lining, in the ordinary production, need between lateral lining material and fused sodium aluminum fluoride, form one deck solid dielectric substrate, be called stove group.But because the variation and the fluctuation of producing often make stove group destroyed, cause the electrolyte corrosion that the lateral lining material is melted and wash away, destroy the lateral lining material, form bakie when serious.
When the lateral lining material local destroyed after, the way that adopts is usually: if a destructive position is less, and electrolyzer can also continue to use, and can carry out sectional repair under the situation of not stopping groove.This method only is applicable to the less situation in damaged position (patent CN 03153134.2).But when lateral lining material damage position is big or when causing runout, the general employing stopped the groove maintenance.If b furnace bottom and sidepiece all breakage are more serious, carry out large repairs, be about to furnace bottom and side wall composite material and all change.The overhaul cost costliness.The sidepiece badly broken is repaiied in can carrying out if the c furnace bottom is better, promptly generally only changes side wall composite material.But it is higher to stop the expense of repairing in the groove, and will waste a large amount of production times, and will waste a large amount of roasting and starting expenses when resuming production once more, owing to stop groove and start the variation significantly that causes temperature once more, can damage furnace bottom simultaneously.
Summary of the invention
The present invention be directed to the deficiency that above-mentioned prior art exists, provide a kind of can carry out the lateral lining material of the more electrolyzer in serious damage position disposable whole replacing with work-ing life of prolonging electrolyzer, in mending course, do not stop groove and keep ordinary production substantially, effectively reduce and stop groove upkeep cost, stopping production financial loss, roasting and starting expense, and in online repairing, keep the stable of groove temperature, effectively reduce to the destructive electrolytic bath side part inner lining of cathode lining of electrolytic bath the method for repairing in online.
For achieving the above object, the present invention takes following technical scheme.
The method of repairing during a kind of electrolytic bath side part inner lining is online, it is characterized in that online in the process of repairing comprise:
A. the horizontal total height with ionogen and aluminium liquid is adjusted to 35-15cm;
B. bath voltage is adjusted at 1.8-5.5V;
C. keep the groove temperature at 850-1100 ℃;
D. between ionogen and stove group, press stifled one deck blocking layer;
E. dig mulch, the ionogen stove group of electrolyzer sidepiece, remaining lateral lining material clearly with pneumatic tool, the degree of depth reaches 20-45cm, and whole sidepiece all will dig clearly;
F. at the one deck of laying at the interface charcoal paste layer of having cleared up, thickness is 1-10cm;
G. with side wall carbon block or silicon carbide bulk, paste ornaments over or build by laying bricks or stones at charcoal;
H. resume production by the way of managing behind the electrobath start.
The method of repairing during a kind of electrolytic bath side part inner lining of the present invention is online is not stopped at electrolyzer under the situation of groove, and the counter-lateral quadrents inner lining material is all changed.Can carry out the lateral lining material of the more electrolyzer in serious damage position disposable whole replacing with work-ing life of prolonging electrolyzer, in mending course, do not stop groove and keep ordinary production substantially, effectively reduce and stop groove upkeep cost, stopping production financial loss, roasting and starting expense, and in online repairing, keep the stable of groove temperature, effectively reduce destruction cathode lining of electrolytic bath.In repair the electrolyzer technology condition rationally be set in the process, to keep the basicly stable of electrolyzer.
Embodiment
The method of repairing during a kind of electrolytic bath side part inner lining is online, the process of repairing comprised during it was online: a. adjusts the level height of ionogen and aluminium liquid, makes its total height remain on 35-15cm; B. adjust bath voltage, it is remained between the 1.8-5.5V; C. the groove temperature maintains 800-1050 ℃; D. press stifled one deck blocking layer between ionogen and stove group, its way is with metal sheet, refractory materials or carborundum material, or with face-piece material, the direct compacting of electrolyte block, also can not press stifled blocking layer; E. dig mulch, the ionogen stove group of electrolyzer sidepiece, remaining lateral lining material clearly with pneumatic tool, the degree of depth reaches 20-45cm, and whole sidepiece all will dig clearly; F. at the one deck of laying at the interface charcoal paste layer of having cleared up, thickness is 1-10cm; G. use suitable side wall carbon block of size or silicon carbide bulk, paste at charcoal and furnish or build by laying bricks or stones; Wherein f, g step also can change into charcoal paste ramming in the mould of making and forming; H. resume production by the way of managing behind the electrobath start.
Embodiment 1
The electrolyzer of a 300KA, the breakage of lateral lining big area.During repairing, extract ionogen and aluminium liquid out, make electrolyte level 12cm, the horizontal 12cm of aluminium.Between ionogen and stove group,, form one deck blocking layer with face-piece material, electrolyte block compacting.Sustaining voltage is at 3.0-3.5V, and the groove temperature maintains 940-970 ℃.Dig mulch, the ionogen stove group of electrolyzer sidepiece, remaining lateral lining material clearly with pneumatic pick, the degree of depth reaches 32-35cm.Laying the cold paste of smashing of one deck at the interface, thickness is 3-5cm.Be 80mm, highly be the side wall carbon block of 300mm that the block-by-block ornaments are pasted over cold smashing with thickness, the control slit is 1-3mm.Whole sidepiece update all side wall carbon block.Construction is promoted to voltage about 5V after finishing, and progressively resumes production.
Embodiment 2
The electrolyzer of a 150KA, the breakage of lateral lining big area.During repairing, extract ionogen and aluminium liquid out, make electrolyte level 20cm, the horizontal 15cm of aluminium.Between ionogen and stove group,, form one deck blocking layer with face-piece material, electrolyte block compacting.Sustaining voltage is at 4.2-4.7V, and the groove temperature maintains 960-990 ℃.Dig mulch, the ionogen stove group of electrolyzer sidepiece, remaining lateral lining material clearly with pneumatic pick, the degree of depth reaches 32-35cm.With the template support of steel, the cold paste of smashing of ramming between template and sidepiece pot shell, the thickness of sticking with paste layer is 80-100mm.The subregion section construction is until the whole rammings of whole sidepiece.Construction is promoted to voltage about 5V after finishing, and progressively resumes production.
Claims (1)
1. electrolytic bath side part inner lining method of repairing in online, it is characterized in that online in the process of repairing comprise:
A. the horizontal total height with ionogen and aluminium liquid is adjusted to 35-15cm;
B. bath voltage is adjusted at 1.8-5.5V;
C. keep the groove temperature at 850-1100 ℃;
D. between ionogen and stove group, press stifled one deck blocking layer;
E. dig mulch, the ionogen stove group of electrolyzer sidepiece, remaining lateral lining material clearly with pneumatic tool, the degree of depth reaches 20-45cm, and whole sidepiece all will dig clearly;
F. at the one deck of laying at the interface charcoal paste layer of having cleared up, thickness is 1-10cm;
G. with side wall carbon block or silicon carbide bulk, paste ornaments over or build by laying bricks or stones at charcoal;
H. resume production by the way of managing behind the electrobath start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100990581A CN100491599C (en) | 2006-07-18 | 2006-07-18 | Online middle repairing method for electrolytic bath side part inner lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100990581A CN100491599C (en) | 2006-07-18 | 2006-07-18 | Online middle repairing method for electrolytic bath side part inner lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1900374A CN1900374A (en) | 2007-01-24 |
| CN100491599C true CN100491599C (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100990581A Active CN100491599C (en) | 2006-07-18 | 2006-07-18 | Online middle repairing method for electrolytic bath side part inner lining |
Country Status (1)
| Country | Link |
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| CN (1) | CN100491599C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864467B (en) * | 2012-09-27 | 2015-04-29 | 河南中孚实业股份有限公司 | Method for restoring side part of large prebaked cell without halt |
| CN108914160A (en) * | 2018-07-25 | 2018-11-30 | 国家电投集团黄河上游水电开发有限责任公司 | A kind of large-scale pre-baked cell is in lines mending method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2123545C1 (en) * | 1997-07-16 | 1998-12-20 | Открытое акционерное общество "Братский алюминиевый завод" | Process of hot repair of hearth of aluminium electrolyzer |
| RU2124584C1 (en) * | 1997-06-16 | 1999-01-10 | Открытое акционерное общество "Братский алюминиевый завод" | Process of repair of lining and putting into operation of aluminum electrolyzer |
| RU2129170C1 (en) * | 1997-06-04 | 1999-04-20 | Акционерное общество открытого типа "Братский алюминиевый завод" | Process of local repair of side lining of aluminum electrolyzer |
| CN1514041A (en) * | 2003-08-08 | 2004-07-21 | 中国铝业股份有限公司 | Method of non stopping production reparing aluminium electrolysis bath side wall |
| CN1696352A (en) * | 2004-05-13 | 2005-11-16 | 河南豫港龙泉铝业有限公司 | Method for repairing liner on side of electrolytic tank without stopping the tank |
-
2006
- 2006-07-18 CN CNB2006100990581A patent/CN100491599C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2129170C1 (en) * | 1997-06-04 | 1999-04-20 | Акционерное общество открытого типа "Братский алюминиевый завод" | Process of local repair of side lining of aluminum electrolyzer |
| RU2124584C1 (en) * | 1997-06-16 | 1999-01-10 | Открытое акционерное общество "Братский алюминиевый завод" | Process of repair of lining and putting into operation of aluminum electrolyzer |
| RU2123545C1 (en) * | 1997-07-16 | 1998-12-20 | Открытое акционерное общество "Братский алюминиевый завод" | Process of hot repair of hearth of aluminium electrolyzer |
| CN1514041A (en) * | 2003-08-08 | 2004-07-21 | 中国铝业股份有限公司 | Method of non stopping production reparing aluminium electrolysis bath side wall |
| CN1696352A (en) * | 2004-05-13 | 2005-11-16 | 河南豫港龙泉铝业有限公司 | Method for repairing liner on side of electrolytic tank without stopping the tank |
Non-Patent Citations (2)
| Title |
|---|
| 二次启动铝电解槽槽侧壁补修的实践. 李方义，吴举.轻金属，第3期. 2001 |
| 二次启动铝电解槽槽侧壁补修的实践. 李方义，吴举.轻金属，第3期. 2001 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1900374A (en) | 2007-01-24 |
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