CN103154326A - Cathode for electrolysis cells - Google Patents
Cathode for electrolysis cells Download PDFInfo
- Publication number
- CN103154326A CN103154326A CN2011800453129A CN201180045312A CN103154326A CN 103154326 A CN103154326 A CN 103154326A CN 2011800453129 A CN2011800453129 A CN 2011800453129A CN 201180045312 A CN201180045312 A CN 201180045312A CN 103154326 A CN103154326 A CN 103154326A
- Authority
- CN
- China
- Prior art keywords
- negative electrode
- pin
- downside
- electric current
- described negative
- 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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Classifications
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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
- C25C3/16—Electric current supply devices, e.g. bus bars
-
- 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
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
Abstract
The invention relates to a cathode (1) for an electrolysis cell for obtaining aluminium from its oxide, comprising a lower side (1g). According to the invention, the cathode (1) is provided with a number of rods (1f) for a power supply, said rods contacting the lower side (1g) of the cathode (1) from below during operation in a power-supplying manner.
Description
Technical field
The present invention relates to the electrolyzer negative electrode, it is used for extracting aluminium by fused salt electrolysis.
Background technology
At present Hall-H é roult method is used for the oxide compound industrial abstract aluminium from aluminium.This is a kind of wherein with aluminum oxide (Al
2O
3) be dissolved in molten cryolitic (Na
3[AlF
6]) in and the mixture that makes serve as the electrolysis process of liquid electrolyte in electrolyzer.On principle, in Fig. 1 a to 1c schematic representation be used for to implement the design of this electrolyzer of Hall-H é roult method, wherein Fig. 1 a has shown the transverse section by the conventional electrolysis pond, and Fig. 1 b has shown the external side view of this electrolyzer.Fig. 1 c has shown the skeleton view of electrolyzer.
Reference numeral 1 expression negative electrode, it can for example be made by graphite, hard coal or its mixture.Alternatively, also can use graphitization cathode based on coke.Usually negative electrode 1 is embedded in the collet 2 of being made by steel and/or refractory materials etc.Described negative electrode 1 can be made with the form of monoblock, can also be made by independent cathode block.
On the whole length of electrolyzer, many electric current supply rods 3 are introduced in negative electrode 1, but only can be seen an independent electric current supply rod 3 in the cross-sectional view strength of Fig. 1 a.Can see in Fig. 1 c, for example can be each cathode block two electric current supply rods are provided.Described electric current supply rod is used for to the needed electric current of described electrolyzer supply electrolytic process.Have a plurality of common prismatic anodes 4 relative with negative electrode 1, wherein in Fig. 1 a schematic representation two anodes 4.Fig. 1 c has shown the detailed configuration of electrolyzer Anodic.During implementing described method, by apply voltage between negative electrode 1 and anode 4, the alumina decomposition that will be dissolved in sodium aluminum fluoride becomes aluminum ion and oxonium ion, in this case, aluminum ion moves to molten aluminum, consider from electrochemical angle, described molten aluminum is actually negative electrode, and here they accept electronics.Because density is larger, so aluminium 5 is gathered in the liquid phase of melts 6 belows of aluminum oxide and sodium aluminum fluoride.Described oxonium ion is reduced into oxygen at anode, the carbon reaction of described oxygen and anode.
Reference numeral 7 and 8 has schematically shown respectively negative pole and the positive pole of the voltage source that is used for providing the required voltage of electrolytic process, and its value is about 3.5V to 5V.
As what can see in the side-view of Fig. 1 b, collet 2 and whole electrolyzer therefore have elongated form, and wherein a plurality of electric current supply rods 3 vertically pass the sidewall of collet 2.Vertical span of the electrolyzer that uses at present is generally approximately 8m to 15m, and width of span is about 3m to 4m.Negative electrode as shown in Fig. 1 a is herein disclosed in EP1845174 for example.
When producing aluminium by fused salt electrolysis, the height of aluminium between oxygen be combined can and thermal losses and resistance losses make to energy require high.Relevant cost of energy has consisted of the major portion of process costs.Reduce these costs and be in the fused salt electrolysis field and need one of subject matter that overcomes.
Be above-mentioned electric current supply rod about a low factor of energy efficiency, except other factors, consider the high temperature that occurs during fused salt electrolysis, described electric current supply rod conventionally is formed from steel.Compare with copper with other electric conductor such as the aluminium that can be used at low temperatures other technology application, steel but has higher ratio resistance.In addition, making electric current skewness in negative electrode for induced current by electric current supply rod on transverse horizontal routinely.
And, in the prior art, the coefficient of thermal expansion differences of negative electrode and electric current supply rod may throw into question when starting and move electrolyzer, especially in the situation that do not consider that coefficient of thermal expansion differences takes appropriate action when contacting with liquid cast iron by so-called " toppling over ".
Summary of the invention
The problem that the present invention is devoted to solve is to provide for the electrolyzer negative electrode that extracts aluminium, it makes the problem of above-mentioned prior art to be overcome, make to compare with the conventional electrolysis pond and can improve especially energy efficiency, and can realize that more uniform cathode current density distributes simultaneously.
According to the present invention, the negative electrode of the feature by having claim 1 solves this problem.Provide preferred embodiment in the dependent claims.
According to the embodiment of the present invention, the electrolyzer with downside that is used for extracting from the oxide compound of aluminium aluminium is equipped with a plurality of pins for the electric current supply with negative electrode, wherein said pin at run duration for the mode of the induced current downside from following Contact cathod.
In meaning of the present invention, term " negative electrode " has very widely to be explained.It can be for example (but being not limited to) so-called cathode bottom, it is made by a plurality of cathode blocks, thereby realize generally according to core of the present invention aspect by this cathode bottom, namely make a plurality of pins from the downside of following Contact cathod for the mode of induced current as mentioned above.Yet the term negative electrode also is intended to the part-structure that finger-type becomes this cathode bottom, as in cathode block.In situation about in each case need not be following clearly explaining, all are relevant to " negative electrode " facilitates feature of the present invention, facilitates in the same manner the present invention when relevant to " cathode block ".
Compared with prior art, by pin under towards negative electrode for induced current.Utilize a plurality of pins under towards negative electrode for the design of induced current, the mode to negative electrode confession induced current is much even from the side than the possible so far minority electric current supply rod that pass through.
In the smooth situation of the downside of negative electrode, for example, pin is designed and arranges (for example passing through the transverse section) by the current flow according to expectation, this uniform distribution of current for example can realize characteristic especially uniformly.For example, can evenly arrange pin under the interval regularly and/or with respect to adjacent pin in each case.Yet, also can optionally arrange pin according to template or distribution plan, thus the uneven distribution of cancellation current in negative electrode.For example, in the outer peripheral areas of negative electrode, this may be favourable.
In addition, this layout that has a large amount of pins also makes the ripple in implement the liquid aluminium of accumulating during Molten on negative electrode form to reduce.Its reason is, as is known, this ripple forms by inhomogeneous cathode current distribution and with the horizontal flow in liquid aluminium that the interaction in magnetic field causes and produces.Electromagnetic Design by transverse section, quantity and distribution by means of pin realize can reduce or minimize this interaction of not expecting.
According to preferred implementation, at least one in described pin, especially all pin, under the vertical line with respect to described downside becomes less than the angle of 30 °, contact with downside under especially substantially vertical angle.Consider from technical elements, can be especially easily and therefore this layout of cost-effective ground enforcement, and about load distribution and the machinery lay-out of pin, described this layout is simple especially.
In the favourable embodiment of negative electrode, pin is introduced in described negative electrode.This means, related pin is positioned partially in described negative electrode under the state of installing in the face of an end of described negative electrode or its downside.Realize thus particularly preferredly between described pin and described negative electrode electrically contacting.
Yet alternatively, other contact variant is also feasible, and it comprises in the present invention equally.This for example can relate to negative electrode wherein and lean against layout on pin, and in this case, pin is not introduced in negative electrode.In this case, for example carbonization pitch, electro-conductive adhesive or carbon compound can improve electrically contacting between described pin and described negative electrode downside by carbonaceous or metallic compound.
The particularly preferred embodiment according to the present invention connects by screw described pin is inserted in the downside of described negative electrode.For example, this makes described pin to be arranged in advance in described negative electrode, then described negative electrode is arranged in electrolyzer.In addition, guaranteed fixing especially reliably, and guaranteed to remove simply as required safeguard or change.
Particularly advantageously, by described pin in the face of the screw thread on an end of described negative electrode downside be connected pairing screw thread in the negative electrode downside and form described screw and connect.Because this variant does not need extra screw device, but described pin self is exactly screw device, so produced the screw device of simple especially and saving material.
The geometrical shape of this flat head screw can be advantageously with electrical steel production in institute's use Graphite Electrodes be complementary with the geometrical shape of threaded connector.Verified this geometrical shape is good especially aspect distribution of current, physical strength and screw.
Considering from the angle of heat and electricity, is particularly advantageously that flat head screw is made by the material identical with the material of described negative electrode.Minimize thus mechanical stress and contact resistance.
According to preferred implementation, described pin is made by graphite.This makes it possible to realize high thermal stability and the low resistance of described pin, thereby is implementing to improve energy efficiency during fused salt electrolysis.
Described pin is longer, and is far away apart from the distance of described negative electrode for the electric current rod of induced current to them, and therefore far away apart from the zone of high treatment temp.Along with the increase of distance, the intensity of the electromagnetic field that is produced by the current flowing in described solid electric current rod also descends, and this helps avoid again above-mentioned ripple in molten aluminium and forms.Verified, be about 100mm to 500mm in the specially suitable length of described pin aspect this.
Affect that in described negative electrode, the possible mode of distribution of current is the selection in pin transverse section.On the other hand, the number of the pin that uses is larger and these pins are thinner, and distribution of current is more even.Yet lower limit is by limiting with a plurality of pins related cost and input.In practice, verified, aspect this, the pin with about 30mm to 200mm diameter is suitable especially.In this, it should be noted that independent selection must adapt to the special design feature of negative electrode form related in every kind of situation, may be also favourable thereby use the pin with different size in suitable situation.
As mentioned above, an advantage according to the negative electrode of embodiment of the present invention is aspect larger homogeneity, can affect the electric current supply to negative electrode.A kind of means that realize this purpose are that the mode that is close together is as far as possible placed described pin.Verified, for example, if having approximately 4 to about 100 pins on every square metre of diapire of described negative electrode, advantageous particularly.
For pin is connected to voltage source, for example, in one embodiment, several pins is connected to via screw or fixture the end that they deviate from described negative electrode in each case is connected to public electric current rod.Therefore, as mentioned above, described electric current rod separates following distance with described negative electrode, and this distance and described the pin not threaded length of tool are complementary.Importantly, can guarantee in this case, because thermal expansion can occur electric current bar material (metal), connect so must design in the mode of not using excessive mechanical force on pin described screw.Technician in the interconnection technique field can realize easily that pin is connected with this metal screw between the electric current rod, and this is that the reason of its details no longer is provided herein.
Due to the negative electrode that has used according to an embodiment of the invention, described electric current rod itself separates with described negative electrode, so described electric current rod need to not made by heat-staple especially material.Therefore, described electric current rod needn't be made by iron, steel etc.On the contrary, described public electric current rod can be made by containing the material that surpasses 50% bronze medal or aluminium.Copper and aluminium both showed than iron or the lower ratio resistance of steel, thereby can improve the energy efficiency in fused salt electrolysis.Naturally, described electric current rod also can by fine copper or fine aluminium or only copper or the aluminium of slight alloying be made.If for example with copper rod as electric current rod, compare with the steel of previous use, can be reduced to approximately 1/4th than resistance.
According to other embodiment, the downside of described negative electrode is designed to the form of downward tapered prismatoid.In this way, the electric current that will introduce from below is consistent also to be introduced in described negative electrode equably.In the situation that described negative electrode is made by independent cathode block, at least some cathode blocks of described negative electrode preferably have this downward tapered prismatoid, and in this case, these prismatoids advantageously extend in parallel to each other.Described prismatoid can be for example described negative electrode vertically on extend or perpendicular.
In this way, the distance between described hot-cathode groove or negative electrode and described electric current rod can further increase, thereby at run duration, obviously the temperature than close described cathode can place is lower in the main temperature of described electric current rod site.
Description of drawings
Use now the non-restrictive illustrative embodiment, the present invention will be described in more detail with reference to accompanying drawing.In the accompanying drawings:
Fig. 1 a has shown the transverse section that is used for the electrolyzer of extraction aluminum oxide according to prior art;
Fig. 1 b has shown the electrolyzer of Fig. 1 a in the mode of the vertical view in outside;
Fig. 1 c shown extracted the skeleton view of the electrolyzer of aluminium according to prior art from aluminum oxide, and the part of described skeleton view is form of fracture;
Fig. 2 a has shown the skeleton view according to the negative electrode of embodiment of the present invention;
Fig. 2 b has shown the skeleton view of 90 ° of cathode rotaries in Fig. 2 a; And
Fig. 3 has shown the view profile according to the screw connection of electrolyzer of the present invention.
In described accompanying drawing, use identical Reference numeral to represent identical or respective element in different images.
Embodiment
With reference to Fig. 2 a and 2b, have an X-rayed the angle from difference in each case and shown the electrolyzer that has according to the embodiment of negative electrode of the present invention.Shown in negative electrode be applicable to use Hall-H é roult method to extract aluminium from aluminum oxide.Sidewall 1a is arranged on negative electrode 1.Described sidewall 1a can form with the form of negative electrode 1 with monoblock, or in the illustrated case, described sidewall 1a can be connected on described negative electrode 1 and along vertical side of negative electrode 1 and extend.In this embodiment, described sidewall 1a is made of independent side wall block 1a1.Similarly, in this embodiment, negative electrode 1 is made of independent cathode block 1b1.
Yet, in the alternative, for example also can select different connection means such as fixture to connect.
In this case, flat head screw 1e has circular cross sections, and from the homogeneity aspect consideration of current density, this is favourable.Can find out from Fig. 2 b, pin 1e distributes with for example slight "the" shape.Must be noted that, although described to have the form of the negative electrode 1 of prismatoid 1d herein on its downside, this configuration not necessarily.On the contrary, as the upper side of negative electrode 1, the downside 1g of negative electrode 1 can be designed to the plane.In this embodiment, can pin 1e be arranged on downside with arbitrary form.
As shown in Fig. 2 a, can also arrange pin with for example linear mode.In the pin of linear arrangement in this way, certainly can also arrange a plurality of pins in the mode that is parallel to each other.
For example, all pin 1e that arrange along prismatoid 1d in each case at its downside, namely connect with public electric current excellent 3 by screw again in the side that deviates from described negative electrode 1 and are connected.Shown the possible screw connection of pin 1e to electric current rod 3 in Fig. 3.In this case, two screws are inserted the downside of pin 1e from the side of electric current rod 3.
Can find out from figure, due to spaced apart with the groove 1c of negative electrode 1 at run duration electric current rod 3, and therefore spaced apart with high-temperature area, so the electric current rod 3 temperature beguines that must bear are much lower according to those temperature that the electric current rod in the prior art embodiment of Fig. 1 a to 1c mainly has.In other words, in this case, electric current rod 3 is away from described high-temperature area, and therefore can be made by for example but better material of electroconductibility poorer than steel temperature tolerance.
In this illustrative embodiments, electric current rod 3 is made by aluminium alloy.Alternatively, can use known copper alloy.Shown prismatoid 1d also has the groove 1c of raising negative electrode 1 and the effect of the distance between electric current rod 3.
Can be preferably by suitable layout, geometrical shape layout particularly, offset not only conduct electricity but also the metal of height heat conduction in possible excessive heat radiation.
Can see in the accompanying drawings, with several electric current rods 3(in this case, be three electric current rods 3 in each case) be connected to separately on common bus 10, described bus 10 is connected to the voltage source (not shown).For example, bus 10 and electric current rod 3 can be manufactured from the same material.Under alternative case, the embodiment of monoblock is also feasible.
Depend on the downside that how to design negative electrode 1, multiple layout can be used for pin 1e.For example, if be the plane at downside described in design, can pin 1e be fixed to described downside with the form of the grid of rule.About the homogeneity of above-mentioned electric current supply, this is particularly advantageously.
About cathode material, can use well known by persons skilled in the art and be applicable to from any materials of alumina eltrolysis aluminium.For example proposed suitable material in DE10261745, by the reference mode, described document has been incorporated herein in the content aspect this.Especially, pin 1e can be made by the material identical with negative electrode 1.Because graphite has temperature tolerance and because it is lower than resistance, thus verified its advantageous particularly aspect this.
Reference numerals list
1 negative electrode
The 1b1 cathode block
The 1a sidewall
The 1a1 side wall block
The 1c groove
The 1d prismatoid
The 1e pin
1g negative electrode downside
2 collets
3 electric current rods
4 anodes
5 aluminium
6 mixtures (aluminum oxide, sodium aluminum fluoride)
7 negative poles, voltage source
8 positive poles, voltage source
10 buses
Claims (12)
1. one kind is used for from the electrolyzer negative electrode (1) of the oxide compound extraction aluminium of aluminium, described negative electrode (1) has downside (1g), it is characterized in that, described negative electrode (1) is equipped with for for a plurality of pins (1f) of induced current, wherein said pin at run duration for the mode of the induced current downside (1g) from the described negative electrode of following contact (1).
2. negative electrode according to claim 1 (1), it is characterized in that, at least one in described pin is basically perpendicular to contact described downside (1g) under the angle of described downside (1g) especially at least under becoming less than the angle of 30 ° with respect to the vertical line of described downside (1g).
3. negative electrode according to claim 1 and 2 (1), is characterized in that, described pin (1f) is introduced in described negative electrode (1).
4. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, connect by screw described pin (1f) is inserted in the described downside (1g) of described negative electrode (1).
5. negative electrode according to claim 4 (1), is characterized in that, forms described screw by the pairing screw thread in the face of in the downside (1g) of the screw thread on an end of described downside (1g) and described negative electrode (1) that is connected at described pin (1f) and connect.
6. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, described pin is made by graphite.
7. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, the length of described pin is about 100mm to 500mm.
8. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, described pin (1f) has the approximately diameter of 30mm to 200mm.
9. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, have approximately 4 to about 100 pins (1f) on the negative electrode of every square metre (1).
10. according to the one or more described negative electrode (1) in aforementioned claim, it is characterized in that, several pins (1f) are connected to electric current rod (3) in its end that deviates from described negative electrode (1) in each case.
11. negative electrode according to claim 8 (1) is characterized in that, described electric current rod (3) surpasses 50% copper and/or the material of aluminium is made by containing.
12. the one or more described negative electrode (1) according in aforementioned claim is characterized in that, with the form of downward tapered prismatoid (1d), the downside (1g) of described negative electrode (1) is carried out trapezoidal design.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010041082 DE102010041082A1 (en) | 2010-09-20 | 2010-09-20 | Cathode for electrolysis cells |
| DE102010041082.9 | 2010-09-20 | ||
| PCT/EP2011/066315 WO2012038422A1 (en) | 2010-09-20 | 2011-09-20 | Cathode for electrolysis cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103154326A true CN103154326A (en) | 2013-06-12 |
Family
ID=44719891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800453129A Pending CN103154326A (en) | 2010-09-20 | 2011-09-20 | Cathode for electrolysis cells |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2619353A1 (en) |
| JP (1) | JP5635196B2 (en) |
| CN (1) | CN103154326A (en) |
| CA (1) | CA2811355A1 (en) |
| DE (1) | DE102010041082A1 (en) |
| RU (1) | RU2013118029A (en) |
| WO (1) | WO2012038422A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013207738A1 (en) * | 2013-04-26 | 2014-10-30 | Sgl Carbon Se | Cathode block with a groove of varying depth and filled gap |
| FR3078714B1 (en) * | 2018-03-12 | 2020-03-06 | Carbone Savoie | CATHODIC ASSEMBLY FOR ELECTROLYSIS TANK |
| WO2021130765A1 (en) * | 2019-12-24 | 2021-07-01 | Aditya Birla Science and Technology Company Private Limited | An apparatus for enhancing performance of an aluminium reduction cell in a smelting process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470083A (en) * | 1963-11-22 | 1969-09-30 | Vaw Ver Aluminium Werke Ag | Electrolytic cell cathode bottom with vertically inserted current conductor |
| DE2008215A1 (en) * | 1970-02-21 | 1971-09-02 | Sigri Elektrographit Gmbh | Graphite sheathing for aluminium electrolysi |
| US4537671A (en) * | 1982-07-12 | 1985-08-27 | Swiss Aluminium Ltd. | Cathode pot of an aluminum reduction cell |
| US6113756A (en) * | 1996-06-18 | 2000-09-05 | Comalco Aluminium Limited | Cathode construction |
| CN1844467A (en) * | 2006-03-17 | 2006-10-11 | 贵阳铝镁设计研究院 | Method and structure for improving cathode current density of aluminium-electrolytic cell |
| CN201141044Y (en) * | 2007-12-11 | 2008-10-29 | 沈阳铝镁设计研究院 | Structure for eliminating horizontal current in aluminum liquid in aluminum cell |
| CN101432466A (en) * | 2006-04-13 | 2009-05-13 | Sgl碳股份公司 | Cathodes for aluminium electrolysis cell with non-planar slot design |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3579432A (en) * | 1968-09-23 | 1971-05-18 | Kaiser Auminum & Chemical Corp | Electrolytic reduction cell |
| DE2833381A1 (en) * | 1978-07-29 | 1980-02-14 | Sigri Elektrographit Gmbh | Electrolysis cell for winning aluminium - where carbon cathode hearth is connected to bus=bars via spaced graphite pegs increasing the efficiency of aluminium prodn. |
| US4998709A (en) * | 1988-06-23 | 1991-03-12 | Conoco Inc. | Method of making graphite electrode nipple |
| NO315090B1 (en) * | 2000-11-27 | 2003-07-07 | Servico As | Devices for conveying current to or from the electrodes in electrolytic cells, methods of making them, and electrolytic cell preparation of aluminum by electrolysis of alumina dissolved in a molten electrolyte |
| DE10261745B3 (en) | 2002-12-30 | 2004-07-22 | Sgl Carbon Ag | Cathode system for electrolytic aluminum extraction |
-
2010
- 2010-09-20 DE DE201010041082 patent/DE102010041082A1/en not_active Withdrawn
-
2011
- 2011-09-20 EP EP11761552.6A patent/EP2619353A1/en not_active Withdrawn
- 2011-09-20 CN CN2011800453129A patent/CN103154326A/en active Pending
- 2011-09-20 JP JP2013529630A patent/JP5635196B2/en not_active Expired - Fee Related
- 2011-09-20 RU RU2013118029/02A patent/RU2013118029A/en not_active Application Discontinuation
- 2011-09-20 CA CA2811355A patent/CA2811355A1/en not_active Abandoned
- 2011-09-20 WO PCT/EP2011/066315 patent/WO2012038422A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470083A (en) * | 1963-11-22 | 1969-09-30 | Vaw Ver Aluminium Werke Ag | Electrolytic cell cathode bottom with vertically inserted current conductor |
| DE2008215A1 (en) * | 1970-02-21 | 1971-09-02 | Sigri Elektrographit Gmbh | Graphite sheathing for aluminium electrolysi |
| US4537671A (en) * | 1982-07-12 | 1985-08-27 | Swiss Aluminium Ltd. | Cathode pot of an aluminum reduction cell |
| US6113756A (en) * | 1996-06-18 | 2000-09-05 | Comalco Aluminium Limited | Cathode construction |
| CN1844467A (en) * | 2006-03-17 | 2006-10-11 | 贵阳铝镁设计研究院 | Method and structure for improving cathode current density of aluminium-electrolytic cell |
| CN101432466A (en) * | 2006-04-13 | 2009-05-13 | Sgl碳股份公司 | Cathodes for aluminium electrolysis cell with non-planar slot design |
| CN201141044Y (en) * | 2007-12-11 | 2008-10-29 | 沈阳铝镁设计研究院 | Structure for eliminating horizontal current in aluminum liquid in aluminum cell |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2619353A1 (en) | 2013-07-31 |
| JP5635196B2 (en) | 2014-12-03 |
| WO2012038422A1 (en) | 2012-03-29 |
| RU2013118029A (en) | 2014-10-27 |
| DE102010041082A1 (en) | 2012-03-22 |
| JP2013537938A (en) | 2013-10-07 |
| CA2811355A1 (en) | 2012-03-29 |
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Application publication date: 20130612 |