CN205616960U - Aluminium - carbon - aluminium cathode of aluminium cell - Google Patents
Aluminium - carbon - aluminium cathode of aluminium cell Download PDFInfo
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- CN205616960U CN205616960U CN201620363658.3U CN201620363658U CN205616960U CN 205616960 U CN205616960 U CN 205616960U CN 201620363658 U CN201620363658 U CN 201620363658U CN 205616960 U CN205616960 U CN 205616960U
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Abstract
The utility model provides the aluminium of an aluminium cell carbon aluminium cathode relates to one kind and regards as the negative pole with aluminium to an ice crystal oxidation aluminium melt is the improvement of electrolyte, molten -salt growth method production aluminium cell. The structure of its negative pole of characterized in that includes: the electrolysis cell body, the setting in the first ledge in both ends of cell body is separated to the electrit, with two negative pole partition walls of electrolysis trough side ledge inner wall rigid coupling, separate the cathode bus that cell body end ledge inner wall shape side passageway got into the electrolysis cell body by negative pole partition wall and electrit, lie in the electrolysis trough internal, open the horizontal baffle of negative pole that has aluminium liquid through -hole. The utility model discloses an is double -deck aluminium cathode aluminium cell because with 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
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell, relates to a kind of using aluminum as negative electrode, with cryolite one alumina melt as electrolyte, molten-salt growth method produce the improvement of aluminium cell the moon plate.
Background technology
Aluminum is yield and the non-ferrous metal of consumption maximum, is the second largest structural metallic materials being only second to iron and steel, has extremely important strategic position in national economy with national defense construction.At present, China's electrolytic aluminium yield ranks first in the world.Aluminum Electrolysis Production is with cryolite one alumina melt as electrolyte, with carbon as anode, with liquid aluminium, cathode carbon pieces, cathode steel bar composition cathode systems as negative electrode, logical DC current, separate out CO at anode2Gas, separates out liquid aluminium at negative electrode.The fundamental reaction of aluminium electroloysis is:
Energising: 2Al2O3+3C=====3CO2+4Al
According to current technology, produce 1t metallic aluminium and about must consume 14500kw h electricity, about need the whole year to consume 451,000,000,000 degree of electricity, be genuine electric-tiger.Under the process conditions of aluminium electroloysis 950-960 DEG C, the theoretical power consumption of aluminium electroloysis is about 6300 kw h/(t Al), energy utilization efficiency is less than 40%.
Conventional aluminum electrolytic cell currents is flowed through electrolyte, aluminum liquid by anode, flows out from negative electrode.Anode drop, electrode resistance pressure drop (including electrolyte, aluminum liquid), cathode drop height are the main causes causing aluminium electroloysis energy consumption high.In aluminium cell resistance drop, cathode drop accounts for the 20% of resistance drop, the negative electrode of aluminium cell is made up of aluminum liquid layer and carbon cathode blocks in groove, and cathode drop is made up of parts such as aluminum liquid layer pressure drop in groove, aluminum carbon contact drop, carbon block pressure drop, carbon steel contact drop, rod iron pressure drops, sees Fig. 1.Within the whole electrolysis bath cycle in service life, cathode drop uses the prolongation Development pattern change of time with electrolysis bath.At the initial stage (going into operation about 1 year) that electrolysis bath comes into operation, cathode drop uses the prolongation of time with electrolysis bath, has the trend (improve with cathode carbon pieces degree of graphitization and reduce) being gradually lowered.The electrolysis bath of operation 2-3, cathode drop keeps relative stability.After, along with electrolysis bath uses the prolongation of time, cathode drop has the trend gradually risen.Tradition cell cathode carbon block group, the carbon-steel contact drop that can produce between carbon block and conduction rod iron, carbon-steel contact drop is first dropped rise afterwards with groove increase in age.Contact interface voltage drop between electrolytic aluminium liquid and carbon block is affected by furnace bottom crust state.As a example by certain type aluminium cell, in the case of furnace bottom is without crust, the contact interface voltage drop between electrolytic aluminium liquid and carbon block is between 20-28mv, and the carbon-steel contact drop during carbon block voltage reduces to 102mv, new groove is 69mv, and rod iron resistance drop is 186mv.Rod iron voltage drop during new groove accounts for the 48.8% of furnace bottom voltage drop.The 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 is in use, groove electrolyte inside passes through cathode carbon pieces to bottom percolation, the electrolyte penetrated is in carbon-steel contact site cooling, form nonconducting solid electrolyte layer, make carbon-steel contact drop steeply rise, see Fig. 2.
In sum, being made up of the conventional aluminum electrolysis bath of negative electrode aluminum liquid and carbon cathode blocks, cathode steel bar voltage drop accounts for the 49% of hearth and bottom, substantially increases the power consumption of aluminium electroloysis；During electrolysis bath uses, the electrolyte penetrated forms nonconducting solid electrolyte layer in carbon-steel contact site, makes carbon-steel contact drop steeply rise, and increases aluminium electroloysis power consumption.
Summary of the invention
The purpose of this utility model is aiming at the deficiency that above-mentioned prior art exists, one is provided can effectively to eliminate aluminum-carbon contact drop, carbon block resistance drop, carbon-steel contact drop, rod iron resistance drop, reduce aluminium electroloysis power consumption, improve the Double-layer aluminum cathode aluminium electrolytic cell negative electrode of Aluminum Electrolysis Efficiency.
The purpose of this utility model is achieved through the following technical solutions.
Aluminum-carbon-aluminum the 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；It is provided with ledge in cell body top edge；
Negative electrode partition wall, this partition wall is respectively to be arranged in the two ends ledge of electrit solution cell body two partition walls affixed with cell body side channel side inwall, is provided with end passage bottom partition wall and between the going to the bottom of electrit solution cell body；Negative electrode partition wall and electrit solution cell body termination ledge inwall shape wing passage；
Negative busbar, this negative busbar is entered cell body by negative electrode partition wall with electrit solution cell body termination ledge inwall shape wing passage；
Negative electrode horizontal baffle, this horizontal baffle is to be positioned at the horizontal baffle that cell body couples with negative electrode partition wall lower end, has aluminum fluid through-hole on dividing plate.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, it is characterized in that its negative electrode partition wall is by cell body direction from inside to outside, it is made up of carbon block and fire-resistant-insulation material successively, its carbon block bottom is built aluminium oxide Ceramic Tiles, and described negative electrode horizontal baffle is built, with the carbon block bottom of negative electrode partition wall, the aluminium oxide ceramics brick having and coupled.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, it is characterised in that the ledge of the electrit solution cell body being provided with the two ends of negative electrode partition wall be outside, section be the ledge of " L ".
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, it is characterised in that negative electrode horizontal baffle bottom is provided with support carbon block.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, is the special electrolytic tank negative electrode of the patent application of " a kind of aluminum electrolysis method using aluminum as negative electrode ".During aluminum electrolysis, aluminium cell can use conventional anodes system, blanking system, dust purification system, owing to negative electrode is with without cathode carbon pieces-without rod iron-without the aluminum liquid of titanium boride coating, replace rod iron-carbon block group negative electrode, eliminate the precipitation of alumina on the cathode carbon pieces that conventional aluminum electrolysis bath exists and cellular micro cell defect, during electrolysis production, there is not aluminium oxide, aluminium carbide problem that electrolytic aluminium liquid is polluted that bearth precipitation generates.
Accompanying drawing explanation
Fig. 1 is the conventional aluminum electrolysis bath schematic diagram of prior art；In its figure, 1 is conventional aluminum electrolysis bath.
Fig. 2 is traditional cell cathode carbon block group structural representation of prior art, in its figure, 2 is carbon cathode blocks, 2a is cathode carbon pieces, 2b is the carbon paste between carbon block and conduction rod iron, and 2c is cathode bar, and 2d is the contact interface voltage drop between electrolytic aluminium liquid and carbon block, 2e is carbon block voltage drop, and 2f is carbon-steel contact drop.
Fig. 3 is the structural representation of the aluminum-carbon-aluminum negative electrode of a kind of aluminium cell of the present utility model；Fig. 3. Double-layer aluminum cathode construction schematic diagram；In its figure, 7 is cell body, and 8 is negative electrode partition wall, and 8a is side wall carbon block, 8b be sidepiece fire-resistant-heat-insulation layer, 8c is aluminium oxide ceramics brick, and 9 is negative busbar, and 10 is cathode separator, A be hatching trend.
Fig. 4 is the sectional view of the aluminum-carbon-aluminum negative electrode A-A section of aluminium cell；In its figure, 7b is ledge, and 8a is side wall carbon block, 8b be sidepiece fire-resistant-heat-insulation layer, 8c is aluminium oxide ceramics brick, and 9a is cathode construction A-A section, 11 for support carbon block.
Fig. 5 is the cross-sectional view of the aluminum-carbon-aluminum negative electrode horizontal baffle of aluminium cell of the present utility model;In its figure, 10 is negative electrode horizontal baffle, and 10a is aluminum fluid through-hole (can be circle, ellipse, triangle, square, arbitrary polygon etc.).
Fig. 6 is the structural representation of the aluminum-carbon-aluminum negative electrode horizontal baffle of aluminium cell of the present utility model;In its figure, 10 is negative electrode horizontal baffle, and 10a is aluminum fluid through-hole (can be circle, ellipse, triangle, square, arbitrary polygon etc.).
Detailed description of the invention
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell, its structure includes: cell body 7, and this cell body is the spill cell body being made up of fire-resistant-insulation material；It is provided with ledge 7b in cell body top edge；
Negative electrode partition wall 8, this partition wall is respectively to be arranged in the two ends ledge of electrit solution cell body two partition walls affixed with cell body side channel side inwall, is provided with end passage bottom partition wall and between the going to the bottom of electrit solution cell body；Negative electrode partition wall and electrit solution cell body termination ledge inwall shape wing passage；
Negative busbar 9, this negative busbar is entered cell body by negative electrode partition wall with electrit solution cell body termination ledge inwall shape wing passage, sees Fig. 3.
Negative electrode horizontal baffle 10, this horizontal baffle is to be positioned at the horizontal baffle that cell body couples with negative electrode partition wall lower end, has aluminum fluid through-hole 10a, see Fig. 5 and Fig. 6 on dividing plate.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, its negative electrode partition wall 8 is by cell body direction from inside to outside, it is made up of carbon block 8a and fire-resistant-insulation material 8b successively, its carbon block bottom is built aluminium oxide Ceramic Tiles 8c, described negative electrode horizontal baffle is built, with the carbon block bottom of negative electrode partition wall, the aluminium oxide ceramics brick having and is coupled, and sees Fig. 4.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, the ledge of the electrit solution cell body being provided with the two ends of negative electrode partition wall be outside, section be the ledge of " L ".
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, negative electrode horizontal baffle bottom is provided with support carbon block 11.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, the cathode steel bar pressure drop existed according to traditional electrolyte groove is high, be easily formed the feature of solid electrolyte insulating barrier between rod iron and carbon block, replaces rod iron to reduce cathode drop with aluminum liquid；Aluminum negative electrode is divided into by negative electrode horizontal baffle can the Double-layer aluminum liquid of upper and lower UNICOM, replace the negative electrode that traditional electrolyte groove is made up of aluminum liquid, carbon block, cathode steel bar, the hearth and bottom during new groove can be reduced close to 50%, as a example by certain type electrolysis bath, reduce furnace bottom rod iron pressure drop 186mv, reduce carbon-steel contact drop 45mv(be converted into carbon-aluminum contact drop by carbon-steel contact drop) as a example by calculate, ton aluminum reduce power consumption 750kw h；Owing to the fusing point of aluminum is low, the electrolyte spread by carbon block will not form solid electrolyte insulating barrier at carbon-steel interface, makes electrolysis bath in whole lifetime, and hearth and bottom reduces with the prolongation in groove age, greatly reduces aluminium electroloysis power consumption.
The material of its negative electrode horizontal baffle can be common carbon block or semi-graphited carbon block or Graphitized carbon blocks；Separating the profile of carbon block can be rectangle, square, trapezoidal；Separate carbon block and be provided with the passage (communication passage between upper strata aluminum liquid-lower floor's aluminum liquid) of Qi Lv liquid UNICOM effect, aluminum liquid communication passage can be circle, ellipse, triangle, square, arbitrary polygon etc., the passive support carbon brick being provided with, the material of carbon brick can be common carbon block or semi-graphited carbon block or Graphitized carbon blocks or aluminium oxide ceramics brick.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell of the present utility model, negative electrode power outlet mother wire is placed in negative electrode partition wall and electrit solution cell body termination ledge inwall shape wing passage；Aluminum liquid in passage is solid-state, and when the thermal balance of electrolysis bath changes, the aluminum liquid in passage converts between solid-state, semisolid, liquid, and now, lower floor's aluminum liquid realizes, by communication passage, feeding of overflowing.Use the aluminium cell of this utility model negative electrode, the hearth and bottom during new groove can be reduced close to 50%,；Eliminating the solid electrolyte insulating barrier formed because of electrolyte permeability, make electrolysis bath in whole lifetime, hearth and bottom reduces with the prolongation in groove age, greatly reduces aluminium electroloysis power consumption, has the highest economic worth and social benefit.
As a example by certain type electrolysis bath, reduce furnace bottom rod iron pressure drop 186mv, reduce carbon-steel contact drop 45mv(be converted into carbon-aluminum contact drop by carbon-steel contact drop) as a example by calculate, ton aluminum reduce power consumption 750kw h；Owing to the fusing point of aluminum is low, the electrolyte spread by carbon block will not form solid electrolyte insulating barrier at carbon-steel interface, makes electrolysis bath in whole lifetime, and hearth and bottom reduces with the prolongation in groove age, greatly reduces aluminium electroloysis power consumption.
Claims (4)
1. aluminum-carbon-aluminum the negative electrode of an aluminium cell；It is characterized 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 ledge in cell body top edge；
Negative electrode partition wall, this partition wall is respectively to be arranged in the two ends ledge of electrit solution cell body two partition walls affixed with cell body side channel side inwall, is provided with end passage bottom partition wall and between the going to the bottom of electrit solution cell body；Negative electrode partition wall and electrit solution cell body termination ledge inwall shape wing passage；
Negative busbar, this negative busbar is entered cell body by negative electrode partition wall with electrit solution cell body termination ledge inwall shape wing passage；
Negative electrode horizontal baffle, this horizontal baffle is to be positioned at the horizontal baffle that cell body couples with negative electrode partition wall lower end, has aluminum fluid through-hole on dividing plate.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell the most according to claim 1, it is characterized in that its negative electrode partition wall is by cell body direction from inside to outside, it is made up of carbon block and fire-resistant-insulation material successively, its carbon block bottom is built aluminium oxide Ceramic Tiles, and described negative electrode horizontal baffle is built, with the carbon block bottom of negative electrode partition wall, the aluminium oxide ceramics brick having and coupled.
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell the most according to claim 1, it is characterised in that the ledge of the electrit solution cell body being provided with the two ends of negative electrode partition wall be outside, section be the ledge of " L ".
Aluminum-carbon-aluminum the negative electrode of a kind of aluminium cell the most according to claim 1, it is characterised in that negative electrode horizontal baffle bottom is provided with support carbon block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620363658.3U CN205616960U (en) | 2016-04-27 | 2016-04-27 | Aluminium - carbon - aluminium cathode of aluminium cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620363658.3U CN205616960U (en) | 2016-04-27 | 2016-04-27 | Aluminium - carbon - aluminium cathode of aluminium cell |
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| CN205616960U true CN205616960U (en) | 2016-10-05 |
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| CN201620363658.3U Withdrawn - After Issue CN205616960U (en) | 2016-04-27 | 2016-04-27 | Aluminium - carbon - aluminium cathode of aluminium cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780057A (en) * | 2016-04-27 | 2016-07-20 | 新疆大学 | Double-layer aluminum cathode aluminum electrolysis cell cathode |
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2016
- 2016-04-27 CN CN201620363658.3U patent/CN205616960U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780057A (en) * | 2016-04-27 | 2016-07-20 | 新疆大学 | Double-layer aluminum cathode aluminum electrolysis cell cathode |
| CN105780057B (en) * | 2016-04-27 | 2018-04-20 | 新疆大学 | Double-layer aluminum cathode aluminium electrolytic cell cathode |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161005 Effective date of abandoning: 20180420 |