CN106929879A - The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off - Google Patents
The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off Download PDFInfo
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- CN106929879A CN106929879A CN201710088065.XA CN201710088065A CN106929879A CN 106929879 A CN106929879 A CN 106929879A CN 201710088065 A CN201710088065 A CN 201710088065A CN 106929879 A CN106929879 A CN 106929879A
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- Prior art keywords
- steel pawl
- aluminum guide
- anode
- power
- aluminium electroloysis
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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
-
- 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
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- 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
The invention discloses a kind of method that prebaked anode aluminium electroloysis steel pawl leads power-off, it is characterised in that：Insulating barrier is set between the big bus of upper part of the electrolytic cell and steel pawl aluminum guide, and control steel pawl aluminum guide leads power-off.The present invention can realize that steel pawl aluminum guide leads the handoff-security of power-off, be that aluminium electroloysis continuous producing method lays the first stone.
Description
Technical field
The present invention relates to a kind of Aluminum Electrolysis Production method, particularly a kind of prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off
Method.
Background technology
Modern Aluminium Industry, generally produces electrolytic aluminium using prebaked anode.2~4 are provided with anode carbon block upper surface
A diameter of 160~180mm, depth is the circular groove of 80~110mm, is commonly called as charcoal bowl, and in anode assembling, charcoal bowl is used for installing anode claw
Head, and cast in charcoal bowl anode joint with the phosphorus pig iron, anode joint and aluminium conducting rod are exploded by aluminum steel and weld connection, then
Aluminium conducting rod is closely connected with anode carbon block, constitute anode carbon block group.During Aluminum Electrolysis Production, anode carbon block can be because of it
The oxygen for coming is decomposited with alumina eltrolysis, and constantly reaction discharges carbon dioxide and constantly consumes at high temperature, therefore anode carbon block
Need to periodically connect, remaining carbon block is commonly called as anode anode scrap after connection.The current production technology is primarily present following shortcoming, 1）Connection
New anode carbon block is in normal-temperature, and to be put into after being preheated through about 24 hours in electrolytic cell could be conductive, therefore jointed anode charcoal
Block can increase heat loss, and very big to the impact of the stable working of electrolytic cell during change poles；2）The connection of anode can give birth to aluminium electroloysis
Produce and form periodically influence, destroy the energy and material balance of electrolytic cell, influence current efficiency, increase power consumption rate；3）In order to
Anode joint is separated with anode anode scrap, it is necessary to the charcoal bowl at phosphorus pig iron casting is broken into pieces, make anode anode scrap de- from anode joint
Fall to realize separating, the process not only takes, and labor strength is big, efficiency is low；4）Anode anode scrap under connection is produced
Amount is generally the 10%~15% of aluminium ingot yield, is 26,000,000~27,000,000 tons/year of calculating by China's aluminium ingot yield, produces every year
Anode anode scrap is 2,600,000~3,900,000 tons/year, and according to 2700 yuan/ton of calculating of anode carbon block, annual China can waste value up to hundred
Hundred million yuan of anode carbon block；4）There is 15%~18% porosity in itself because of anode carbon block, therefore adsorbed substantial amounts of in anode anode scrap
Electrolyte, the main component of electrolyte is fluoride salt, and the anode anode scrap environmental pollution containing a large amount of fluoride salts is extremely serious；5）
When just anode joint is cast in charcoal bowl, wasted to reduce anode anode scrap, it is necessary to anode anode scrap is burnt thin as far as possible, in sun
Pole carbon block end of lifetime, the top surface of anode carbon block is sufficiently close to electrolyte level face, by magnetic field and airflow influence, bath surface
Constantly there is strong wave to produce, in actual production process, anode joint is often corroded by electrolyte, the ferro element of anode joint
Dissolve in electrolyte, immediately into aluminium ingot, influence quality of finished；Anode joint generally uses the life-span at 3 years or so, and this also makes life
Producing cost accordingly increases, and in anode carbon block end of lifetime, excessively thin anode anode scrap thickness necessarily brings charcoal extremely conductive uneven,
And then cause electrolytic cell fluctuation of operating conditions, power consumption increase.Want to improve the occupation mode of existing anode carbon block, realize the life of non-residual electrode
Produce, with reduces cost, not exclusively improve anode carbon block, it is necessary to be to be improved the related whole system of anode carbon block, and
If existing aluminium cell will stop groove transformation, fire resistant heat preserving structure, anode stub in pot superstructure and bottom pot shell,
Cathode carbon pieces etc. are scrapped completely, lose huge, and the expense that the structure such as bus, portal frame above electrolytic cell is remanufactured also ten
Divide high.Numerous studies are have also been made before applicant, and has applied for a series of patent, anode carbon block is adopted with the connection of steel pawl
With mechanical connection, for realizing that the continuous of anode carbon block is used.But for the continuous steel pawl using anode carbon block, it is not necessary to every time more
All changed when changing anode carbon block, steel pawl and anode carbon block need to only be connected, the problem brought is due to existing electrolytic cell
In technique, steel pawl always with bus electrical contacts, and the electric current of large scale electrolytic cell bus is generally in hundreds of kilo-amperes, if online folded
Plus during anode carbon block, steel pawl powered always will produce great heat, possible scaling loss when that will be contacted with anode carbon block
The components such as the big bus of electrolytic cell, steel pawl aluminum guide, or even influence the electric current stabilization of whole electrolytic cell.It is hidden with very big safety
Suffer from.
The content of the invention
It is an object of the present invention to provide a kind of method that prebaked cell for aluminum-reduction steel pawl aluminum guide leads power-off, this hair
It is bright with realizing that anode steel claw aluminum guide and the big bus of upper part of the electrolytic cell lead power-off switching, the connection of anode carbon block power outage security is led
Electric even running, and it is simple and reliable.
Technical scheme：The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off is big in upper part of the electrolytic cell
Bus sets insulation board control steel pawl aluminum guide and leads power-off with the contact surface of steel pawl aluminum guide.
The method that foregoing prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off, when the steel pawl aluminum guide needs conductive,
Insulation board is pumped.
The method that foregoing prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off, when the steel pawl aluminum guide needs power-off,
Insulation board is inserted between the big bus of electrolytic cell and steel pawl aluminum guide.
The a series of aluminium electroloysis continuous producing method patent applied before applicant, is carried out to anode carbon block and steel pawl
Improve, including the anode carbon block structure that a kind of pre-calcining electrolytic cell non-residual electrode is produced, Application No. 201610104972.4, use
The exposed T-shaped connection plush copper of surrounding, also including a kind of prebaked anode aluminium electroloysis continuous producing method and structure, Application No.
201610526791.0, connected using built-in L-type, steel pawl is used with anode carbon block and is mechanically connected.The present invention is using exhausted
Listrium controls the power-off of leading of steel pawl aluminum guide, by the power-off of steel pawl during superposition anode carbon block, is powered again after the completion of connection, can realize
Steel pawl aluminum guide leads the handoff-security of power-off, is that aluminium electroloysis continuous producing method lays the first stone.
Specific embodiment
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation to present invention limitation.
Embodiment 1.The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off, in the big bus of upper part of the electrolytic cell and steel pawl
Insulating barrier is set between aluminum guide, and control steel pawl aluminum guide leads power-off.When the steel pawl aluminum guide needs conductive, by insulation board
Pump.When the steel pawl aluminum guide needs power-off, insulation board is inserted between the big bus of electrolytic cell and steel pawl aluminum guide, insulation
Plate can be sticked on the big bus corresponding site of electrolytic cell, or is sticked on the corresponding site of steel pawl aluminum guide.Using insulation board
The power-off of leading of steel pawl aluminum guide is controlled, and electrolytic cell needs steel pawl to be powered off during superposition anode carbon block, is powered again after the completion of connection, real
Existing steel pawl aluminum guide leads the handoff-security of power-off.
Claims (3)
1. a kind of method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off, it is characterised in that：In the big bus of upper part of the electrolytic cell
Insulating barrier is set between steel pawl aluminum guide, and control steel pawl aluminum guide leads power-off.
2. the method that prebaked anode aluminium electroloysis steel pawl aluminum guide according to claim 1 leads power-off, it is characterised in that：It is described
When steel pawl aluminum guide needs conductive, insulation board is pumped.
3. the method that prebaked anode aluminium electroloysis steel pawl aluminum guide according to claim 2 leads power-off, it is characterised in that：It is described
When steel pawl aluminum guide needs power-off, insulation board is inserted between the big bus of electrolytic cell and steel pawl aluminum guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088065.XA CN106929879A (en) | 2017-02-19 | 2017-02-19 | The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088065.XA CN106929879A (en) | 2017-02-19 | 2017-02-19 | The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106929879A true CN106929879A (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710088065.XA Pending CN106929879A (en) | 2017-02-19 | 2017-02-19 | The method that prebaked anode aluminium electroloysis steel pawl aluminum guide leads power-off |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2458692A1 (en) * | 2003-02-25 | 2004-08-25 | Alcoa Inc. | Protecting an inert anode from thermal shock |
| JP2007247057A (en) * | 2006-02-16 | 2007-09-27 | Sumitomo Chemical Co Ltd | Cathode graphite material for aluminum three layer electrorefining |
| EP1876265A2 (en) * | 2006-06-14 | 2008-01-09 | NKM Noell Special Cranes | Connector for mechanical and electrical connection of an anode to the anodic frame of an aluminium production cell and device for grasping and tightening/loosening such a connector |
| CN203474920U (en) * | 2013-09-30 | 2014-03-12 | 贵阳铝镁设计研究院有限公司 | Parallel preheating device of aluminum electrolysis cells |
| CN204125542U (en) * | 2014-10-22 | 2015-01-28 | 段卫武 | A kind of insulation small box fastener |
| CN105332004A (en) * | 2015-11-03 | 2016-02-17 | 云南云铝泽鑫铝业有限公司 | Online repair method for local damage of aluminum electrolytic cell cathode |
-
2017
- 2017-02-19 CN CN201710088065.XA patent/CN106929879A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2458692A1 (en) * | 2003-02-25 | 2004-08-25 | Alcoa Inc. | Protecting an inert anode from thermal shock |
| JP2007247057A (en) * | 2006-02-16 | 2007-09-27 | Sumitomo Chemical Co Ltd | Cathode graphite material for aluminum three layer electrorefining |
| EP1876265A2 (en) * | 2006-06-14 | 2008-01-09 | NKM Noell Special Cranes | Connector for mechanical and electrical connection of an anode to the anodic frame of an aluminium production cell and device for grasping and tightening/loosening such a connector |
| CN203474920U (en) * | 2013-09-30 | 2014-03-12 | 贵阳铝镁设计研究院有限公司 | Parallel preheating device of aluminum electrolysis cells |
| CN204125542U (en) * | 2014-10-22 | 2015-01-28 | 段卫武 | A kind of insulation small box fastener |
| CN105332004A (en) * | 2015-11-03 | 2016-02-17 | 云南云铝泽鑫铝业有限公司 | Online repair method for local damage of aluminum electrolytic cell cathode |
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Application publication date: 20170707 |
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