CN205616962U - Pure aluminium cathode of aluminium cell - Google Patents
Pure aluminium cathode of aluminium cell Download PDFInfo
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- CN205616962U CN205616962U CN201620363660.0U CN201620363660U CN205616962U CN 205616962 U CN205616962 U CN 205616962U CN 201620363660 U CN201620363660 U CN 201620363660U CN 205616962 U CN205616962 U CN 205616962U
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- aluminium
- cell
- negative electrode
- cell body
- partition wall
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Abstract
The utility model provides a pure aluminium cathode of aluminium cell, relates to and uses the improvement of an ice crystal oxidation aluminium melt as electrolyte, molten -salt growth method production aluminium cell. The structure of its negative pole of characterized in that includes: the electrolysis cell body, the negative pole partition wall of setting in the first ledge in the both ends of aluminium electroloysis cell body, going to the bottom of negative pole partition wall bottom and aluminium electroloysis cell body is equipped with end passageway within a definite time, negative pole partition wall and aluminium electroloysis cell body end ledge inner wall shape side passageway, cathode bus, this cathode bus gets into the electrolysis cell body by negative pole partition wall and aluminium electroloysis cell body end ledge inner wall shape side passageway. The utility model discloses a pure aluminium cathode of aluminium cell to no cathode carbon block no rod iron does boron -free ization titanium coating's aluminium liquid replace the rod iron as the negative pole charcoal block group negative pole, eliminated aluminium oxide on the cathode carbon block that traditional aluminium cell exists deposit with cellular micro cell defect, in the electrolysis production process, do not have aluminium oxide that furnace bottom sedimentation generated, the aluminum carbide problem to the electrolytic aluminum liquid pollution.
Description
Technical field
A kind of fine aluminium negative electrode of aluminium cell, relate to cryolite one alumina melt as electrolyte, molten-salt growth method produce aluminum
The improvement of electrolysis bath.
Background technology
At present, it is with cryolite one alumina melt as electrolyte that conventional electrolysis aluminum produces, with carbon as anode, with liquid
The cathode systems of aluminum, cathode carbon pieces, cathode steel bar composition is negative electrode, logical DC current, separates out CO at anode2Gas, at negative electrode
Separate out liquid aluminium.According to current technology, produce 1t metallic aluminium and about must consume 15000kw h electricity (Integrated Exchange power consumption), at aluminum
Being electrolysed under the process conditions of 940-960 DEG C, anode carbon consumption is converted into power consumption less than 36%(by the energy utilization efficiency of aluminium electroloysis).
Flowed through electrolyte, aluminum liquid at conventional aluminum electrolytic cell currents by anode, flow out from negative electrode.Anode drop, electrode resistance pressure drop (include
Electrolyte, aluminum liquid), cathode drop height be the major reason causing aluminium electroloysis energy utilization efficiency low.
In aluminium cell resistance drop, cathode drop accounts for the 20% of resistance drop, and the negative electrode of aluminium cell is by aluminum in groove
Liquid layer and carbon cathode blocks composition, cathode drop is by aluminum liquid layer pressure drop in groove, aluminum carbon contact drop, carbon block pressure drop, carbon steel contact
The part composition such as pressure drop, rod iron pressure drop, is shown in Fig. 1.At the initial stage (going into operation about 1 year) that electrolysis bath comes into operation, cathode drop with
Electrolysis bath uses the prolongation of time, has the trend (improve with cathode carbon pieces degree of graphitization and reduce) being gradually lowered.Operation 2-3
The electrolysis bath in year, cathode drop keeps relative stability.After, along with electrolysis bath uses the prolongation of time, cathode drop has gradually
The trend raised.
Carbon-steel contact drop, carbon block electricity is produced between carbon block and the conduction rod iron of the carbon cathode blocks of conventional aluminum electrolysis bath
Pressure drop, carbon-steel contact drop first drop rise afterwards with groove increases in age.Contact interface voltage drop between electrolytic aluminium liquid and carbon block is by stove
The impact of bear building-up shelly state has bigger fluctuation.As a example by certain type aluminium cell, in the case of furnace bottom is without crust, electrolytic aluminium liquid
And the contact interface voltage drop between carbon block is between 20-28mv, carbon block voltage reduces to the carbon during 102mv, new groove-steel contact
Pressure drop is 69mv, and rod iron pressure drop is 186mv.Rod iron voltage drop during new groove accounts for the 48.8% of furnace bottom voltage drop.Particularly,
Carbon in carbon cathode blocks-steel contact drop increases along with the increase in groove age, trace it to its cause be due to: electrolysis bath was using
Cheng Zhong, groove electrolyte inside in carbon-steel contact site cooling, is formed to bottom percolation, the electrolyte penetrated by cathode carbon pieces
Nonconducting solid electrolyte layer, makes carbon-steel contact drop steeply rise, sees Fig. 2.On traditional electrolyte groove cathode carbon pieces, easily
In forming precipitation of alumina, the cellular precipitation that conventional aluminum electrolysis bath carbon block negative electrode is formed, the oxidation that cathode carbon pieces is formed
Aluminum precipitation, is affected by electrolysis bath cold-hot condition and is changed, and precipitation can be pasty state, plate shelly or cellular, pasty state, plate
Shelly precipitation can make tank voltage raise 400mv-900mv, and cellular precipitation not only makes negative electrode hearth and bottom increase, moreover it is possible to is formed
Micro cell with aluminum as anode, with cathode carbon pieces as negative electrode, generates aluminium oxide on the anode of micro cell, generates carbon on negative electrode
Change aluminum, the precipitation of alumina that carbon block negative electrode generates, increase electrolytic aluminium power consumption, reduce Aluminum Electrolysis Efficiency, the oxygen generated
Change aluminum, aluminium carbide causes electrolytic aluminium liquid to pollute, and sees Fig. 3.
In sum, the aluminium cell of the traditional structure of negative electrode, cathode steel bar voltage it are made up of aluminum liquid and carbon cathode blocks
Fall accounts for the 49% of hearth and bottom, substantially increases the power consumption of aluminium electroloysis；During electrolysis bath uses, the electrolysis penetrated
Liquid forms nonconducting solid electrolyte layer in carbon-steel contact site, makes carbon-steel contact drop steeply rise, and increases aluminium electroloysis
Power consumption；On cathode carbon pieces formed precipitation of alumina, not only make negative electrode hearth and bottom increase, moreover it is possible to formation with aluminum as anode,
Micro cell with cathode carbon pieces as negative electrode, the aluminium oxide of generation, aluminium carbide, increase electrolytic aluminium power consumption, reduce aluminium electroloysis electric current effect
Rate, causes electrolytic aluminium liquid to pollute simultaneously.
Summary of the invention
The purpose of this utility model be aiming at above-mentioned prior art exist deficiency, it is provided that one can effectively eliminate aluminum-
Carbon contact drop, carbon block resistance drop, carbon-steel contact drop, rod iron resistance drop, reduce aluminium electroloysis power consumption, improves aluminium electroloysis
The aluminium electrolytic cell cathode using aluminum as negative electrode of current efficiency.
The purpose of this utility model is achieved through the following technical solutions.
The fine aluminium negative electrode of a kind of aluminium cell, it is characterised in that the structure of its negative electrode includes:
Cell body, this cell body is the spill cell body being made up of fire-resistant-insulation material；In cell body top edge
It is provided with ledge；
Negative electrode partition wall, in this partition wall is the two ends ledge being respectively arranged on aluminium electroloysis cell body and in cell body side channel side
Two partition walls that wall is affixed, are provided with end passage bottom partition wall and between the going to the bottom of aluminium electroloysis cell body；Negative electrode partition wall and aluminium electroloysis cell body
Termination ledge inwall shape wing passage；
Negative busbar, this negative busbar is by negative electrode partition wall and the inwall shape wing passage entrance electrolysis of aluminium electroloysis cell body end tank side
Cell body.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, it is characterised in that its negative electrode partition wall by cell body by inner
Outward direction, is made up of carbon block and fire-resistant-insulation material successively, and its carbon block bottom is built aluminium oxide Ceramic Tiles, is used for blocking electricity
Solve trough inner water ordinary telegram stream.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, it is characterised in that be provided with the aluminum of the two ends of negative electrode partition wall
The ledge of cell body be outside, section be the ledge of " L ".
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, is " a kind of aluminum electrolysis method using aluminum as negative electrode "
The special electrolytic tank negative electrode of patent application.During aluminum electrolysis, aluminium cell can use conventional anodes system, blanking system, powder
Dirt cleaning system, it would however also be possible to employ the charging process of the outer dispensing of stove, due to without cathode carbon pieces-without rod iron-without titanium boride coating
Aluminum liquid as negative electrode, replace rod iron-carbon block group negative electrode, eliminate the aluminium oxide on the cathode carbon pieces that conventional aluminum electrolysis bath exists
, during electrolysis production, there is not the aluminium oxide of bearth precipitation generation, aluminium carbide to electricity in precipitation and cellular micro cell defect
Solve the problem that aluminum liquid pollutes.
Accompanying drawing explanation
Fig. 1 is traditional cell cathode carbon block group schematic diagram of technology；In its figure, 1 is carbon cathode blocks.
Fig. 2 is the solid insulation dielectric substrate signal between conventional aluminum electrolytic cell cathode steel bar and the carbon block of technology
Figure；In its figure, 1g is the solid insulation dielectric substrate between rod iron and carbon block.
Fig. 3 is the cellular precipitation schematic diagram formed on the conventional aluminum electrolysis bath charcoal negative electrode of technology；1h is negative electrode charcoal
The cellular micro cell formed on block.
Fig. 4 is the structural representation of the fine aluminium negative electrode of a kind of aluminium cell of the present utility model；In its figure, 2 is electrolysis bath
Body, 2a is electrolyte layer, and 2b is upper strata aluminum liquid, and 2c is fine aluminium negative electrode, and 2d is aluminium oxide ceramics brick, and 2f is side wall carbon block, and 2g is
Sidepiece is fire-resistant-heat-insulation layer, and 2h is negative electrode power outlet mother wire, and 2i is negative busbar groove, and 2j is bottom refractory-heat-insulation layer, and 2k is UNICOM
Passage.
Fig. 5 is the fine aluminium cathode construction A-A planing surface schematic diagram of a kind of aluminium cell of the present utility model；In its figure, 3 is cloudy
Electrode structure A-A section, 3a is artificial stove side, and 3c is fine aluminium negative electrode, and 3d is aluminium oxide ceramics brick, and 3f is side wall carbon block, and 3g is side
Portion is fire-resistant-heat-insulation layer, and 3h is negative electrode power outlet mother wire, and 3i is negative busbar groove.
Detailed description of the invention
A kind of fine aluminium negative electrode of aluminium cell, the structure of its negative electrode includes:
Cell body 2, this cell body is the spill cell body being made up of fire-resistant-insulation material；In cell body upper edge
Edge is provided with ledge 3a；
Negative electrode partition wall by sidepiece fire-resistant-heat-insulation layer 2g, side wall carbon block 2f form, this partition wall is for being respectively arranged on aluminium cell
Two partition walls affixed with cell body side channel side inwall in the two ends ledge of body, bottom partition wall with under aluminium electroloysis cell body
End passage 2k it is provided with between the end；Negative electrode partition wall helps inwall shape wing passage with aluminium electroloysis cell body end tank；
Negative busbar 2h, this negative busbar is entered cell body by the end passage 2k bottom partition wall.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, its negative electrode partition wall by cell body direction from inside to outside,
Being made up of carbon block 2f and fire-resistant-insulation material 2g successively, its carbon block bottom is built aluminium oxide Ceramic Tiles 2d.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, it is provided with the aluminium electroloysis cell body of two ends of negative electrode partition wall
Ledge be outside, section be the ledge of " L ".
During use, the aluminum liquid of bottom of electrolytic tank is used to carry out aluminium electroloysis as negative electrode；The aluminum liquid of its bottom of electrolytic tank is with cloudy
Pole bus UNICOM is an entirety, constitutes the cathod system of aluminium cell.
Being provided with inside the two ends of aluminium cell and be connected with partition wall with cell sidewall, partition wall end stretch enters aluminum liquid and electricity
Solving bottom land and form the two ends inwall shape aluminum liquid wing passage of aluminum liquid lower passage, partition wall and aluminium cell, negative busbar is at aluminum liquid
Wing passage contacts with aluminum liquid；Its partition wall carbon block bottom block has the effect of aluminium oxide Ceramic Tiles to be to block side wall carbon block and fine aluminium the moon
Horizontal current between pole, increases the quiet performance of aluminum liquid, improves current efficiency.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, the cathode steel bar pressure drop existed for traditional electrolyte groove
High, be easily formed between rod iron and carbon block on solid electrolyte insulating barrier, cathode carbon pieces and be easily formed precipitation of alumina and honeycomb
Shape micro cell, the aluminium oxide of generation, aluminium carbide, increase electrolytic aluminium power consumption, reduce the deficiencies such as Aluminum Electrolysis Efficiency, with fine aluminium aluminum
Propulsive cathode replaces the negative electrode of rod iron-carbon block group composition；With the benefit of fine aluminium aluminum propulsive cathode replacement rod iron-carbon block negative electrode it is: reduce
Hearth and bottom more than 95% during new groove.As a example by certain type electrolysis bath, reduce aluminum-carbon contact drop 24mv(20-28mv), stove
Calculating as a example by end rod iron pressure drop 186mv, carbon block pressure drop 102mv, carbon-steel contact drop 69mv, ton aluminum reduces power consumption 1234kw
h；Eliminating carbon-steel interface and form solid electrolyte insulating barrier, make electrolysis bath in whole lifetime, hearth and bottom maintains all the time
In extremely low level, greatly reduce aluminium electroloysis power consumption.
The fine aluminium negative electrode of a kind of aluminium cell of the present utility model, replaces rod iron-carbon block group negative electrode with fine aluminium negative electrode, eliminates
The precipitation of alumina on cathode carbon pieces that conventional aluminum electrolysis bath exists and cellular micro cell defect, in electrolysis production process
In, there is not aluminium oxide, aluminium carbide problem that electrolytic aluminium liquid is polluted that bearth precipitation generates.
Negative electrode power outlet mother wire is placed in the side channels of partition wall and negative busbar groove 2i composition, bus duct and lower floor's aluminum liquid
Between combined as a whole by communication passage 2k.Aluminum liquid in bus duct and communication passage is solid-state, when the thermal balance of electrolysis bath is sent out
During changing, the aluminum liquid in communication passage 4k converts between solid-state, semisolid, liquid, now, fine aluminium negative electrode by overflow and
Feeding guarantee between fine aluminium negative electrode → communication passage → negative electrode power outlet mother wire 4h to go out electricity loop unimpeded, it is ensured that electrolytic process is even
Continue and carry out.
Compared with conventional aluminum electrolysis bath, replace traditional carbon block-rod iron composite cathode with aluminum liquid, eliminate aluminum-carbon contact
Pressure drop, carbon block resistance drop, carbon-steel contact drop, rod iron resistance drop, as a example by certain type conventional aluminum electrolysis bath, reduce furnace bottom
Pressure drop 381mv, is equivalent to reduce ton aluminum power consumption 1234kw h, is equivalent to aluminium electroloysis industry and reduces power consumption 38,400,000,000 degree the whole year；Disappear
Except the solid electrolyte insulating barrier formed because of electrolyte permeability, making electrolysis bath in whole lifetime, hearth and bottom is tieed up all the time
Hold in extremely low level, greatly reduce aluminium electroloysis power consumption；Eliminate the aluminium oxide because bearth precipitation causes, aluminium carbide to electrolysis
The pollution of aluminum liquid, reduces electrolytic aluminium power consumption, improves Aluminum Electrolysis Efficiency, have the highest economic worth and social benefit.
Claims (3)
1. the fine aluminium negative electrode of an aluminium cell, it is characterised in that the structure of its negative electrode includes:
Cell body, this cell body is the spill cell body being made up of fire-resistant-insulation material；It is provided with in cell body top edge
Ledge；
Negative electrode partition wall, consolidates with cell body side channel side inwall in this partition wall is the two ends ledge being respectively arranged on aluminium electroloysis cell body
Two partition walls connect, are provided with end passage bottom partition wall and between aluminium electrolysis cell hall；Negative electrode partition wall is helped with aluminium electroloysis cell body end tank
Inwall shape wing passage；
Negative busbar, this negative busbar is by negative electrode partition wall and aluminium electroloysis cell body end tank side inwall shape wing passage entrance electrolysis bath
Body.
The fine aluminium negative electrode of a kind of aluminium cell the most according to claim 1, it is characterised in that its negative electrode partition wall is by electrolysis bath
Body direction from inside to outside, is made up of carbon block and fire-resistant-insulation material successively, and its carbon block bottom is built aluminium oxide Ceramic Tiles.
The fine aluminium negative electrode of a kind of aluminium cell the most according to claim 1, it is characterised in that be provided with the two ends of negative electrode partition wall
The ledge of aluminium electroloysis cell body of head be outside, section be the ledge of " L ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620363660.0U CN205616962U (en) | 2016-04-27 | 2016-04-27 | Pure aluminium cathode of aluminium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620363660.0U CN205616962U (en) | 2016-04-27 | 2016-04-27 | Pure aluminium cathode of aluminium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205616962U true CN205616962U (en) | 2016-10-05 |
Family
ID=57027450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620363660.0U Withdrawn - After Issue CN205616962U (en) | 2016-04-27 | 2016-04-27 | Pure aluminium cathode of aluminium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205616962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780054A (en) * | 2016-04-27 | 2016-07-20 | 新疆大学 | Aluminum electrolysis cell cathode as which aluminum is adopted |
-
2016
- 2016-04-27 CN CN201620363660.0U patent/CN205616962U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780054A (en) * | 2016-04-27 | 2016-07-20 | 新疆大学 | Aluminum electrolysis cell cathode as which aluminum is adopted |
| CN105780054B (en) * | 2016-04-27 | 2018-04-20 | 新疆大学 | The aluminium electrolytic cell cathode of cathode is used as using aluminium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161005 Effective date of abandoning: 20180420 |
|
| AV01 | Patent right actively abandoned |