CN100432298C - Method for reducing voltage drop of aluminum cell stop - Google Patents
Method for reducing voltage drop of aluminum cell stop Download PDFInfo
- Publication number
- CN100432298C CN100432298C CNB2005101174209A CN200510117420A CN100432298C CN 100432298 C CN100432298 C CN 100432298C CN B2005101174209 A CNB2005101174209 A CN B2005101174209A CN 200510117420 A CN200510117420 A CN 200510117420A CN 100432298 C CN100432298 C CN 100432298C
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- China
- Prior art keywords
- short circuit
- cell
- voltage drop
- crimping
- aluminium
- 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.)
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 42
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 title claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000004411 aluminium Substances 0.000 claims description 59
- 238000002788 crimping Methods 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007494 plate polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- C25C3/16—Electric current supply devices, e.g. bus bars
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A method for reducing voltage drop of an aluminum electrolytic cell when stopping the cell, which relates to the aluminum electrolytic cell stops the cell, particularly to the method for reducing the voltage drop when stopping the cell because the electrolytic cell is repaired or the production of the electrolytic cell is limited. Firstly, an insulating board in a short circuit opening is removed, and the contact face of short circuit bus bars are roughed and cleaned; electric conduction material is smeared on the contact face, the short circuit opening is pressed, distributing pieces are welded, and short circuit is carried out in the short circuit opening. The present invention is characterized in that the positions of cathode bus bars of two connected cells, which are positioned below ground cover plates, are connected again. When stopping the cell, the method of the present invention carries out the connection of cathode bus bars of the stopped cell and cathode bus bars of a formal cell in a near adjacent position after the electrolytic cell stops in gear, which makes the distance of the electric current the shortest, reduces the voltage drop when stopping the cell, and realizes energy saving and consumption reduction.
Description
Technical field
A kind of method that reduces voltage drop of aluminum cell stop relates to aluminium cell and stops groove, changes the method that the bus mode of connection reduces bath voltage when particularly electrolytic cell overhaul or limited production stop groove.
Background technology
In Aluminium Electrolysis, link to each other with the electrolyzer riser bus bar, the above short circuit mouth of facility floor separates with insulcrete, electric current flows to the positive bar and electrolyzer of next platform trough from the negative busbar of a last platform trough, through after the electrochemical reaction, flow to the negative busbar of this groove, arrive the positive bar of next platform trough again, so the complete series electrolyzer is cascaded.Owing to overhaul, limited production or other reason, total some electrolyzer is in and stops the groove state in the series.At present, existing technology is when stopping groove, and the short circuit mouth more than ground carries out short circuit, and usually step is: 1), the insulcrete in the short circuit mouth is removed; 2), polish, clean out the short-circuit busbar contact surface; 3), smear conductive paste; 4), crimping short circuit mouth; 5), weldering splitter.Through after the above step process, the volts lost of short circuit oral area position generally is not more than 15mv, and the big bus end of last a platform trough negative electrode falls and is generally 150-200mv to the bath voltage that stops of the big bus origin or beginning of next platform trough negative electrode.This part volts lost has increased the average voltage of electrolyzer, has increased the ton aluminium power consumption of Aluminium Electrolysis.
Summary of the invention
The objective of the invention is deficiency, provide a kind of and can effectively reduce voltage drop of aluminum cell stop, thereby effectively reduce the method for Aluminium Electrolysis ton aluminium power consumption at above-mentioned prior art existence.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method that reduces voltage drop of aluminum cell stop, at first the insulcrete in the short circuit mouth is removed, polish, clean out the short-circuit busbar contact surface, smear conductive paste, crimping short circuit mouth, the weldering splitter is executed short circuit in the short circuit cause for gossip, and the negative busbar that it is characterized in that two platform troughs that link is located below the ground cover to connect being positioned at again.
A kind of method that reduces voltage drop of aluminum cell stop, the negative busbar that it is characterized in that two platform troughs are to connect by aluminium liquid being cast in the aluminium block that forms between two negative busbars.
A kind of method that reduces voltage drop of aluminum cell stop is characterized in that before cast aluminum the bus upper surface is drilled with pit earlier.
Method of the present invention when stopping groove, makes earlier after electrolyzer normally stops, and implements to connect with the shortest consecutive position to stopping groove negative busbar and last platform trough negative busbar, makes the electric current distance the shortest, reduces to stop bath voltage and falls, and realizes energy-saving and cost-reducing.Cause in condensed contraction connecting the influence of effect in order to reduce aluminium liquid, before irritating aluminium, a little pits of bus upper surface subdrilling.
Method of the present invention is done the molten bath with graphite cake, with the aluminium liquid cast bus and the surface of taking out in the electrolyzer; Perhaps the electric tank cathode bus that will stop and the negative busbar of a last platform trough are carried out crimping in nearer appropriate location with previously prepd aluminium sheet band; Perhaps aluminium liquid carries out crimping etc. after having poured into a mould the bus slit again, and available multiple mode of connection connects.The aluminium liquid that uses is directly taken from electrolyzer, and is easy to operate.
Patented technology method of the present invention also comprises various mode of connection such as crimping method, welding process, cast welding process, cast crimping method, crimping welding process.Wherein: the crimping method be the aluminium sheet band that welded with aluminium sheet and the soft band of aluminium with the following negative busbar of the facility floor of two grooves in the closer locations crimping.Welding process is the following negative busbar of the facility floor of two grooves to be welded mutually in closer locations with the aluminium sheet band that the soft band of aluminium is welded with aluminium sheet or aluminium sheet.Cast crimping method is with aluminium liquid the following negative busbar of the facility floor of two platform troughs to be connected in closer locations cast, condensation, again the aluminium sheet band that is welded with aluminium sheet and the soft band of aluminium with the following negative busbar of the facility floor of two grooves in the closer locations crimping, reinforce the connection steady decrease volts lost and further reduction pressure drop.The cast welding process is with aluminium liquid the following negative busbar of the facility floor of two platform troughs to be connected in closer locations cast, condensation, aluminium connection conductors piece and the negative busbar of being poured into a mould is welded again.The crimping welding process be the aluminium sheet band that welded with aluminium sheet and the soft band of aluminium with the following negative busbar of the facility floor of two grooves in the closer locations crimping, its aluminium sheet and the negative busbar with crimping welds again.Use the better conductivity material crimping such as copper coin band that copper coin and the soft band of copper welded, then the volts lost of crimping may be littler.
Embodiment
A kind of method that reduces voltage drop of aluminum cell stop, at first the insulcrete in the short circuit mouth is removed, polish, clean out the short-circuit busbar contact surface, smear conductive paste, crimping short circuit mouth, the weldering splitter is executed short circuit in the short circuit cause for gossip, and the negative busbar of two platform troughs that link is positioned at below the ground cover and connects more again.
Embodiment 1
When stopping groove, at first the insulcrete in the short circuit mouth is removed; Polish, clean out the short-circuit busbar contact surface again, smear conductive paste; Short circuit is executed in crimping short circuit cause for gossip again, and it stops bath voltage and reduces to 145-186mv, average 166.3mv.Implementing the cast of aluminium liquid by following working routine and step again connects:
1), makes baffle plate: adopt graphite cake to be made into the molten bath baffle plate.Graphite cake can use repeatedly;
2), bus is handled: the bright and clean and last pits of brill of the aluminium busbar surface finish that will connect;
3), make the molten bath:, surround a molten bath on the bus surface with the stifled side, Up Highway UHW slit of molten bath baffle plate;
4), molten bath mudding: the baffle plate slit is with on the clay coating;
5), get aluminium in the groove: the aluminium liquid of fetching cleaning in the groove fast;
6), cast aluminum liquid: from aluminium cell, take out aluminium liquid and in time be poured among the molten bath;
7), surperficial scarfing cinder: remove significantly bits of aluminium liquid surface;
8), condensation: aluminium liquid can circulate under the promotion of electromagnetic field, allows its natural condensation;
9), hammer strikes: when the aluminium of being poured into a mould does not still cool down, pound with hammer, improve the effect that contacts of aluminium and bus;
10), tear plate open: remove the molten bath graphite cake.
After finishing aluminium liquid cast connecting method, stop bath voltage and drop to 70-118mv, average 94.6mv on average reduces 71.7mv.
Embodiment 2
Adopt aluminium sheet band crimping method, at first the insulcrete in the short circuit mouth is removed; Polish, clean out the short-circuit busbar contact surface again, smear conductive paste; Short circuit is executed in crimping short circuit cause for gossip again, stops bath voltage and falls 180mv.
Implement aluminium sheet band crimping method by following working routine and step again, step is as follows:
1), intercepting aluminium sheet: intercept the aluminium sheet of appropriate size, the limit portion that will weld handles;
2), intercept soft band: the soft band bundle of intercepting appropriate size aluminium, regular stand-by;
3), strip welding: the soft band bundle of aluminium sheet, the aluminium correspondence that is intercepted is welded together with argon arc welding;
4), preparation jig: prepare the steel plate of certain specification, reserve the hole on the steel plate; Get screw rod and screw ready;
5), clean surface: the negative busbar of short circuit and the surface of aluminum plate polishing of aluminium sheet band are cleaned;
6), crimping bus: the negative busbar crimping close together, the appropriate location surface;
7), observe voltage: check the voltage signal line on the negative busbar, observe and stop the groove bus voltage value, confirm crimp quality;
8), check: make regular check on the crimping effect;
9), perfect: screw is the tight again one tight screw of pine to some extent.
Finish after the aluminium sheet band crimping method, stop bath voltage and fall and drop to 92mv, the 88mv that descended, and steady in a long-term at 110mv, steady decrease 70mv.
Implement before the aluminium sheet band crimping method, earlier execute short circuit in the short circuit cause for gossip and stop groove according to existing background technology, preceding big face is crimped on the close negative busbar position of the termination bus that is connected with negative busbar with two U type aluminium sheet bands, and the big face in back is crimped on the negative busbar of two platform troughs with three yi word pattern aluminium sheet bands.It is better near the locational way of negative busbar to be crimped on the termination bus that is connected with negative busbar with two U type aluminium sheet bands by contrast, because itself length is less, resistance is lower.
Implement aluminium sheet band crimping method and will notice that the slit will be tamped with aluminium sheet or steel plate between the bus, the one, prevent negative busbar displacement in compaction process, the 2nd, help to compress to improve the crimping effect, reduce the crimping volts lost; Be also noted that once more tight screw, with the effect that compresses after the temperature distortion of raising jig.
Claims (4)
1. method that reduces voltage drop of aluminum cell stop, at first the insulcrete in the short circuit mouth is removed, polish, clean out the short-circuit busbar contact surface, smear conductive paste, crimping short circuit mouth, the weldering splitter is executed short circuit in the short circuit cause for gossip, and the negative busbar that it is characterized in that two platform troughs that link is located below the ground cover to connect being positioned at again.
2. a kind of method that reduces voltage drop of aluminum cell stop according to claim 1, the negative busbar that it is characterized in that two platform troughs are to connect by aluminium liquid being cast in the aluminium block that forms between two negative busbars.
3. a kind of method that reduces voltage drop of aluminum cell stop according to claim 2 is characterized in that before cast aluminum liquid, the bus upper surface is drilled with pit earlier.
4. a kind of method that reduces voltage drop of aluminum cell stop according to claim 1 is characterized in that the negative busbar of two platform troughs connects by crimping method, welding process, cast welding process, cast crimping method or crimping welding process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101174209A CN100432298C (en) | 2005-11-02 | 2005-11-02 | Method for reducing voltage drop of aluminum cell stop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101174209A CN100432298C (en) | 2005-11-02 | 2005-11-02 | Method for reducing voltage drop of aluminum cell stop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1769535A CN1769535A (en) | 2006-05-10 |
| CN100432298C true CN100432298C (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101174209A Expired - Fee Related CN100432298C (en) | 2005-11-02 | 2005-11-02 | Method for reducing voltage drop of aluminum cell stop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432298C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064807B (en) * | 2019-05-17 | 2021-02-02 | 武汉大学 | Welding method for reducing voltage drop of electrolytic cell |
| CN114540883B (en) * | 2022-03-18 | 2024-05-28 | 十一冶建设集团有限责任公司 | Casting method for cathode aluminum soft belt of electrolytic tank |
| CN115341243A (en) * | 2022-08-18 | 2022-11-15 | 武汉大学 | Bus connection structure of electrolytic cell and method for reducing voltage drop of electrolytic cell |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1002411A1 (en) * | 1981-10-01 | 1983-03-07 | Всесоюзный научно-исследовательский и конструкторский институт "Цветметавтоматика" | Apparatus for servicing electrolysis baths |
| CH647819A5 (en) * | 1981-07-14 | 1985-02-15 | Alusuisse | Method for replacing aluminium electrolytic cells and production plant for implementing the method |
| JP2000104193A (en) * | 1998-09-28 | 2000-04-11 | Nippon Mining & Metals Co Ltd | Method for short-circuiting electrolytic cell blocks |
| CN1129791C (en) * | 1999-09-11 | 2003-12-03 | 青铜峡铝业集团有限公司 | Method for measuring resistance of welded position of cathode in aluminium electrolyzer |
| CN1651610A (en) * | 2004-12-28 | 2005-08-10 | 中国铝业股份有限公司 | Welding method for major repairing cathode of large aluminium electrolytic bath |
-
2005
- 2005-11-02 CN CNB2005101174209A patent/CN100432298C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH647819A5 (en) * | 1981-07-14 | 1985-02-15 | Alusuisse | Method for replacing aluminium electrolytic cells and production plant for implementing the method |
| SU1002411A1 (en) * | 1981-10-01 | 1983-03-07 | Всесоюзный научно-исследовательский и конструкторский институт "Цветметавтоматика" | Apparatus for servicing electrolysis baths |
| JP2000104193A (en) * | 1998-09-28 | 2000-04-11 | Nippon Mining & Metals Co Ltd | Method for short-circuiting electrolytic cell blocks |
| CN1129791C (en) * | 1999-09-11 | 2003-12-03 | 青铜峡铝业集团有限公司 | Method for measuring resistance of welded position of cathode in aluminium electrolyzer |
| CN1651610A (en) * | 2004-12-28 | 2005-08-10 | 中国铝业股份有限公司 | Welding method for major repairing cathode of large aluminium electrolytic bath |
Non-Patent Citations (4)
| Title |
|---|
| 60kA电解槽停槽黑电压降低措施. 冯彦海，王新喜.有色冶金节能，第4期. 2001 |
| 60kA电解槽停槽黑电压降低措施. 冯彦海，王新喜.有色冶金节能，第4期. 2001 * |
| 上插自焙电解槽临时电流通路的设计及阳极立柱的焊接. 吴连成，林江学.有色设备，第4期. 1998 |
| 上插自焙电解槽临时电流通路的设计及阳极立柱的焊接. 吴连成，林江学.有色设备，第4期. 1998 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1769535A (en) | 2006-05-10 |
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