EP1155167B1 - Arrangement de cuves d'electrolyse pour la production d'aluminium - Google Patents
Arrangement de cuves d'electrolyse pour la production d'aluminium Download PDFInfo
- Publication number
- EP1155167B1 EP1155167B1 EP00901689A EP00901689A EP1155167B1 EP 1155167 B1 EP1155167 B1 EP 1155167B1 EP 00901689 A EP00901689 A EP 00901689A EP 00901689 A EP00901689 A EP 00901689A EP 1155167 B1 EP1155167 B1 EP 1155167B1
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- EP
- European Patent Office
- Prior art keywords
- pot
- current
- conductor
- electrolysis
- upstream
- 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.)
- Expired - Lifetime
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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
Definitions
- the invention relates to the production of aluminum by igneous electrolysis according to the process. Hall-Héroult, and more particularly the methods and means allowing it to be put used industrially.
- the invention relates particularly to queues electrolytic cells arranged across, i.e. with long sides perpendicular to the axis of the queue.
- Aluminum metal is produced industrially by igneous electrolysis, namely by electrolysis of alumina in solution in a bath of molten cryolite, called a bath electrolysis, according to the well-known Hall-Héroult process.
- the electrolysis bath is contained in a tank comprising a steel box, which is lined internally refractory and / or insulating materials, and a cathode assembly located at the bottom of the tank. Carbon material anodes are partially submerged in the bath electrolysis. The tank and the anodes form what is often called a cell electrolysis.
- the electrolysis current which circulates in the electrolysis bath and the sheet of liquid aluminum through the anodes and cathode elements, operates alumina reduction reactions and also helps maintain the bath electrolysis at a temperature of the order of 950 ° C by the Joule effect.
- electrolysis systems arranged in line, in so-called electrolysis halls, and connected electrically in series using connecting conductors, so as to optimize factory floor occupancy.
- the tanks which almost always have a shape rectangular, are generally arranged side by side, i.e. the long sides are perpendicular to the axis of the queue (we also say that they are oriented "in cross "), but they can also be arranged head to head (we also say that they are oriented "lengthwise”).
- the tanks are generally arranged so as to form two or several parallel lines which are electrically linked together by end conductors. The electrolysis current thus cascades from one cell to the next.
- the length and mass of the conductors are as small as possible so as to limit the corresponding investment and operating costs, by in particular by reducing the Joule effect losses in the conductors.
- bringing the electrolytic cells closer together and increasing the current intensities have led to the development of conductor configurations capable of to compensate for the effects of magnetic fields produced by the electrolysis current.
- the electrolytic cells are generally controlled in such a way that they are located in thermal equilibrium, that is to say that the heat dissipated by each tank is generally compensated by the heat produced in it, which comes mainly from the electrolysis current.
- Thermal equilibrium conditions depend on the physical parameters of the tank, such as dimensions and nature constituent materials, and operating conditions of the tank, such as electrical resistance of the tank, bath temperature or current intensity electrolysis.
- the tank is often formed and driven so as to cause the formation of a solidified embankment on the side walls of this tank, which allows in particular to inhibit the attack of the coatings of said walls by the cryolite liquid.
- the thermal equilibrium point is generally chosen so as to reach the most favorable operating conditions from a point of view not only technical, but also economical.
- French patent FR 2,552,782 (corresponding to American patent US 4,592,821), on behalf of the plaintiff, describes a line of electrolytic cells which can operate industrially at intensities above 300 kA and with Faraday yields greater than 90%.
- the Applicant has found that the electrolysis cells have temperature heterogeneities, and more precisely a dispersion of the values of temperature in the whole of the liquid mass, which, although relatively low, have tendency to be maintained over time, that is to say that certain temperature differences compared to the average value of the tank does not cancel out by an average effect in time.
- These heterogeneities in particular have the disadvantage of limiting the fine thermal regulation of the tanks.
- Known regulatory processes allow you to control temperature fluctuations over time, but do not do not directly limit the dispersion of temperature values over the entire tank.
- the temperature zones below the setpoint favor deposits of material at the bottom of the tank and the formation of a sloping slope (i.e.
- part of the slope partially covers the cathode), which increase the fall cathodic and are causing tank instabilities, and temperature zones higher than the set value tend to reduce the solidified embankments protective on the sides of the tank and can lead to irregular wear of the coatings.
- the Applicant has therefore sought solutions to reduce the dispersion of temperatures and thermal fluctuations in the electrolytic cells which overcome the disadvantages of the prior art while remaining satisfactory for the design general of the tanks, in particular with regard to floor space and costs for investment and operation, and for the operation of the tanks.
- the first object of the invention is an arrangement of electrolytic cells arranged in cross, for the production of aluminum by igneous electrolysis according to the Hall-Héroult process.
- the invention also relates to an electrolysis plant comprising a arrangement of tanks according to the first object of the invention.
- the arrangement of electrolytic cells for the production of aluminum by igneous electrolysis according to the Hall-Héroult process with an electrolysis current of intensity Io, comprises at least a first row of electrolysis cells, forming a first electrical circuit, and at least one second electrical circuit located at a determined average distance from said first queue, said first queue comprising N tanks arranged across and connecting conductors for transmitting said electrolysis current Io from one cell in said line, called upstream cell, to the next cell of said line, called downstream tank, each tank comprising a metal box, interior cladding elements, anodes and cathode elements, said elements cathode elements being provided with cathode connection outputs making projection on the upstream side and downstream side of the box of each tank, a first part Im from the current Io exiting through the cathode outputs projecting from the upstream side of each tank, a second part Iv of the current Io leaving by the cathode outputs projecting from the downstream side of each tank, said connecting conductors
- each tank located on the side of said second electrical circuit in that at least one so-called "bypass" conductor bypasses each upstream tank, in that the or each lateral conductor is connected to a first set of said cathode outlets located on the upstream side so as to transmit a first part I1 of the current Im, between 10 and 20% of said current Im, in that the or each axial conductor is connected to a second set of said cathode outputs located on the upstream side so to transmit to said mounted a second part I2 of said current Im, understood between 10 and 20% of said current Im, in that the or each conductor of bypass is connected to a third set of said cathode outputs located on the upstream side so as to transmit a third part I3 of the current Im, corresponding to the rest of the current Im, in that said climbs are connected to cathodic outputs located on the downstream side of the corresponding upstream tank, at conductors passing under said tank, and to, or to each, conductor of bypassing said tank, so that
- the lateral and central areas of the tank and the queue are delimited by two planes imaginary vertical and parallel to the axis of the queue.
- Each of said plans intercepts tanks so as to form three zones corresponding to three comparable volumes of liquid mass inside each tank in the queue.
- the central volume is between 25 and 40% of the total volume, and more preferably between 30 and 35 % of total volume.
- the exact volume of each zone, as well as the exact distribution of current under the tank, are functions of the tank structure (in particular the number cathode outputs) and the operating mode of the tank (in particular the thickness of the solid embankments on the edges of the crucible of the tank, which modifies the distribution of liquid masses).
- Said second electrical circuit also called “neighboring file” in the rest of the text, is generally substantially parallel to the file and generally includes at minus an electrolysis tank. It most often includes a line of tanks electrolysis, but it may possibly consist only of conductors. In operation, a current of intensity Io 'flows in said second circuit.
- the arrangement of the tanks is preferably such that the currents Io and Io 'have substantially equal intensities and flow in opposite directions one of the other.
- the sharing of the upstream current of the electrolysis cells between the conductors is function of the intensity of the current of the queue Io and that of the neighboring queue Io ', as well as the distance between the two rows of tanks.
- Figure 1 shows the electrical connection between two successive tanks of a line according to the prior art (corresponding to French patent FR 2,552,782 and to the patent American US 4,592,821).
- the direction of the neighboring queue is indicated by the arrow FV.
- the direction of the electrolysis current is indicated by the arrow Io.
- FIG. 2 illustrates the current distribution parameters in a queue of tanks electrolysis according to the invention.
- an upstream tank of row n and a downstream tank of row n + 1.
- the side upstream of a tank is identified by the letters AM; the downstream side is identified by letters AV.
- the lateral and central areas of the tank plane are delimited by two vertical planes P1 and P2 parallel to the axis A of the queue and placed on either side of this axis.
- the interior, central and exterior lateral areas are identified respectively by the letters F, C and E.
- the arrow indicates the direction of the current electrolysis.
- Figure 3 shows the electrical connection between two successive tanks of a arrangement according to the invention.
- the direction of the neighboring queue is indicated by the arrow FV.
- the direction of the electrolysis current is indicated by the arrow Io.
- each tank comprises a box (1), generally made of steel, internally lined with insulating refractory materials, anodes and cathode elements.
- Anodes and cathode elements are not not illustrated to simplify the figures.
- the cathode elements include carbon blocks and cathode bars sealed in said blocks; an element cathode ray generally includes one or two cathode bars.
- the bars cathodes protrude from each side of the tanks and form said outlets cathodic upstream (3) and downstream (4) (the term "cathodic output" designates all of the cathode bars of the same element projecting on one side of the tank).
- the cathode elements are arranged side by side in the transverse direction tanks.
- the anodes generally consisting of precooked carbonaceous pastes and metal anode rods sealed in said pastes, are fixed to a spider (5) mobile.
- the means of electrical connection between the cathode outputs and the spider include ascending (or mounted) conductors (6A, 6B, 6B ', 6C, 6D, 6D', 6E), axial conductors (7), lateral conductors (8) and conductors bypass (11A and 11B).
- ascending (or mounted) conductors (6A, 6B, 6B ', 6C, 6D, 6D', 6E)
- axial conductors (7) axial conductors (7)
- lateral conductors (8) and conductors bypass (11A and 11B).
- the climbs are connected to the spider via flexible electrical conductors (10A, 10B, 10B ', 10C, 10D, 10D', 10E).
- Circuit may include conductors intermediate (12, 13, 14A, 14B, 15A, 15B, 16A, 16B, 17A, 17B, 18A, 18B, 19A, 19B, 20A, 20B, 21) and equipotential bonding conductors (22, 23A, 23B) to distribute the electrolysis current in the climbs.
- the intensity of the current I1 is preferably comparable to the intensity of the current I2, in meaning that they differ by less than 15% compared to the average of I1 and I2 (i.e. (I1 + I2) / 2).
- the axial conductor is preferably single.
- the driver lateral is unique. It is also advantageous for a bypass conductor single (said internal bypass conductor) bypasses the tank on the side interior and / or that a single bypass conductor (known as external bypass) bypasses the tank on the external side. These measures allow the invention to be implemented effectively while maintaining a relatively simple electrical circuit.
- each tank comprises at least one indoor bypass conductor and at least one bypass conductor outside, and the intensity Ii of the current flowing in the, or all, conductor (s) internal bypass is comparable to the intensity Ie of the current flowing in the, or all of the external bypass conductor (s).
- intensities Ii and Ie differ by less than 15% from the average of Ii and Ie (i.e. (Ii + Ie) / 2).
- the central rise 6C does not carry no current, and is preferably absent, the climbs (6A, 6B, 6B ', 6D, 6D', 6E) are placed symmetrically on either side of the axial plane of the line, outside of said line central zone C, each tank comprises a single axial conductor (7), a single lateral conductor (8), a first single bypass conductor (11B) on the side of the neighboring queue, or "interior side", and a second conductor single bypass (11A) on the side opposite the neighboring lane, or "outside side". No current flows under the box in zone E located on the outside of the tank.
- the climbs are preferably located between the tanks, that is to say between the two adjacent sides of successive tanks.
- the number of said climbs is even and an equal number of climbs is placed on each side of the axis of the queue.
- the intensity of the current flowing in the axial conductor (7) and the intensity of the current flowing in the lateral conductor (8) are comparable, i.e. that they differ by less than 15% from the average of their values.
- the bypass conductors (11A, 11B) also carry a current of comparable intensity.
- the or each lateral conductor passing under the tank is located near the end of the tank, and preferably still near the last outlet cathode.
- the N tanks in a queue typically include two end tanks (namely the row 1 tank and the row N tank) which do not have an upstream or downstream tank, or whose upstream or downstream tank is not located at the same distance as the tanks of the file (which are generally equidistant), or whose upstream or downstream tank is not located in the axis of the queue.
- the supply conductors of the first queue tank and / or the connecting conductors of the last queue tank to electrical circuit or to the next queue may have a different configuration than that of the connecting conductors between the N tanks of the queue.
- said connection conductors of the last tank may not include mounted.
- the current cathode of the upstream outputs (Im) was distributed as follows in the conductors of transmission: 15 kA in the conductor (9A), 7.5 kA in the conductor (9B), 22.5 kA in the conductor (9C), 52.5 kA in the conductor (11A) and 52.5 kA in the conductor (11B).
- the total cathodic current of the downstream tank was distributed as follows on climbs: 60 kA on climbs (6A) and (6E), 15 kA on climbs (6B) and (6D '), 45 kA in the climbs (6B') and (6D), and 60 kA in the central climb (6C).
- Each cathodic output carried a current substantially the same intensity, approximately 7.5 kA.
- the number of climbs was 7 arranged as in Figure 1. These climbs were arranged between the upstream and downstream tanks and symmetrically on either side of the axis of the tank queue.
- the electrical conductors had a configuration similar to that illustrated in figure 3.
- the three zones cut the plan of the tank in three surfaces substantially of the same dimensions, that is to say that the planes P1 and P2 intercepted the plane of the tank so as to form a zone central (C) corresponding to 32% of the liquid mass and two lateral zones (one zone E on the outer side and zone F on the side of the neighboring lane) corresponding each at 34% of the liquid mass (taking into account the slopes).
- the central area included 6 cathode outlets and each side area included 7 outlets cathode.
- Each of the cathode outputs carried a current of substantially same intensity, about 7.5 kA.
- the total cathodic current of the downstream tank was distributed as follows in the climbs: 76.5 kA in the climbs (6A) and (6E), 28.0 kA in the climbs (6B) and (6D '), and 45.5 kA in the climbs (6B ') and (6D).
- the updraft flowing in the area central was therefore zero.
- the number of climbs was 6, 3 climbs in the outer side area and 3 climbs in the inner side area (and therefore no climbs in the area Central). These climbs were arranged between the upstream and downstream tanks and symmetrically on either side of the axis of the queue of tanks.
- the temperature measurements were made using thermocouples stored in the vertical wall of the tank casing and arranged around the casing. In the case of tanks of the prior art, the measurements were carried out on 20 tanks of the same line. In the case of tanks according to the invention, the measurements were carried out on 3 tanks in queue.
- the arrangement according to the invention makes it possible to obtain a significant decrease in the temperature difference between the upstream and downstream sides of each tank.
- the difference between the temperature values measured in the central zone upstream side, at the interface between the electrolysis bath and the metal liquid, and those measured in the central area downstream side, also at the interface between the electrolysis bath and the liquid metal, observed on the tanks according to the invention was 25 ° C ⁇ 10 ° C lower than that observed on tanks according to art prior.
- the arrangement of tanks according to the invention makes it possible to advantageously modify the rows tanks of existing factories without requiring a significant investment.
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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)
Description
Claims (11)
- Arrangement de cuves d'électrolyse, pour la production d'aluminium par électrolyse ignée selon le procédé Hall-Héroult à l'aide d'un courant d'électrolyse d'intensité Io, comprenant au moins une première file de cuves d'électrolyse, formant un premier circuit électrique, et au moins un deuxième circuit électrique situé à une distance moyenne déterminée de ladite première file, ladite première file comprenant N cuves disposées en travers et des conducteurs de liaison pour transmettre ledit courant d'électrolyse Io d'une cuve de ladite file, dite cuve amont, à la cuve suivante de ladite file, dite cuve aval, chaque cuve comprenant un caisson métallique, des éléments de revêtement intérieur, des anodes et des éléments cathodiques, lesdits éléments cathodiques étant munies de sorties cathodiques de raccordement faisant saillie du côté amont et du côté aval du caisson de chaque cuve, une première partie Im du courant Io sortant par les sorties cathodiques faisant saillie du côté amont de chaque cuve, une deuxième partie Iv du courant Io sortant par les sorties cathodiques faisant saillie du côté aval de chaque cuve, lesdits conducteurs de liaison comprenant des conducteurs ascendants, appelés "montées", le courant Io provenant de l'ensemble des éléments cathodiques d'une cuve amont étant transmis aux anodes de la cuve aval par l'intermédiaire desdites montées, ledit arrangement étant caractérisé en ce qu'au moins un conducteur dit "axial" passe sous chaque cuve amont, dans la zone centrale, en ce qu'au moins un conducteur dit "latéral" passe sous chaque cuve amont, dans la zone latérale intérieure, c'est-à-dire la zone de chaque cuve située du côté dudit deuxième circuit électrique, en ce qu'au moins un conducteur dit "de contournement" contourne chaque cuve amont, en ce que le ou chaque conducteur latéral est raccordé à un premier ensemble desdites sorties cathodiques situées du côté amont de manière à transmettre aux dites montées une première partie I1 du courant Im, comprise entre 10 et 20 % dudit courant Im, en ce que le ou chaque conducteur axial est raccordé à un deuxième ensemble desdites sorties cathodiques situées du côté amont de manière à transmettre aux dites montées une deuxième partie 12 dudit courant Im, comprise entre 10 et 20 % dudit courant Im, en ce que le ou chaque conducteur de contournement est raccordé à un troisième ensemble desdites sorties cathodiques situées du côté amont de manière à transmettre une troisième partie I3 du courant Im, correspondant au reste du courant Im, en ce que lesdites montées sont raccordées aux sorties cathodiques situées du côté aval de la cuve amont correspondante, aux conducteurs passant sous ladite cuve et au, ou à chaque, conducteur de contournement de ladite cuve, de manière à ce qu'une fraction Mc du courant Io inférieure à 15 % est transmise par les montées situées dans la zone centrale de ladite file.
- Arrangement selon la revendication 1, caractérisé en ce que la fraction Mc est inférieure à 10 %.
- Arrangement selon la revendication 1 ou 2, caractérisé en ce que les montées se situent entre les deux côtés adjacents de cuves successives.
- Arrangement selon l'une des revendications 1 à 3, caractérisé en ce que le deuxième circuit comprend au moins une cuve.
- Arrangement selon l'une des revendications 1 à 4, caractérisé en ce que le conducteur axial est unique.
- Arrangement selon l'une des revendications 1 à 5, caractérisé en ce que le conducteur latéral est unique.
- Arrangement selon l'une des revendications 1 à 6, caractérisé en ce que l'intensité du courant I1 et l'intensité du courant I2 diffèrent de moins de 15 % par rapport à la moyenne de I1 et I2.
- Arrangement selon l'une des revendications 1 à 7, caractérisé en ce que chaque cuve comprend un seul conducteur de contournement.
- Arrangement selon l'une des revendications 1 à 7, caractérisé en ce que chaque cuve comprend au moins un conducteur de contournement intérieur et au moins un conducteur de contournement extérieur, et en ce que l'intensité du courant Ii circulant dans le, ou l'ensemble des, conducteur(s) de contournement intérieur et l'intensité du courant Ie circulant dans le, ou l'ensemble des, conducteur(s) de contournement extérieur diffèrent de moins de 15 % par rapport à la moyenne de Ii et Ie.
- Arrangement selon l'une des revendications 1 à 7 et 9, caractérisé en ce que chaque cuve comprend un seul conducteur de contournement du côté extérieur et un seul conducteur de contournement du côté intérieur.
- Usine d'électrolyse comprenant au moins un arrangement de cuves d'électrolyse selon les revendications 1 à 10.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901529A FR2789407B1 (fr) | 1999-02-05 | 1999-02-05 | Arrangement de cuves d'electrolyse pour la production d'aluminium |
FR9901529 | 1999-02-05 | ||
PCT/FR2000/000228 WO2000046429A1 (fr) | 1999-02-05 | 2000-02-01 | Arrangement de cuves d'electrolyse pour la production d'aluminium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1155167A1 EP1155167A1 (fr) | 2001-11-21 |
EP1155167B1 true EP1155167B1 (fr) | 2002-11-06 |
Family
ID=9541800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00901689A Expired - Lifetime EP1155167B1 (fr) | 1999-02-05 | 2000-02-01 | Arrangement de cuves d'electrolyse pour la production d'aluminium |
Country Status (15)
Country | Link |
---|---|
US (1) | US6551473B1 (fr) |
EP (1) | EP1155167B1 (fr) |
AR (1) | AR022463A1 (fr) |
AU (1) | AU764224B2 (fr) |
BR (1) | BR0007986A (fr) |
CA (1) | CA2361671A1 (fr) |
DE (1) | DE60000721T2 (fr) |
EG (1) | EG21884A (fr) |
FR (1) | FR2789407B1 (fr) |
GC (1) | GC0000125A (fr) |
NO (1) | NO20013714L (fr) |
NZ (1) | NZ512913A (fr) |
RU (1) | RU2227179C2 (fr) |
WO (1) | WO2000046429A1 (fr) |
ZA (1) | ZA200105654B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2868436B1 (fr) * | 2004-04-02 | 2006-05-26 | Aluminium Pechiney Soc Par Act | Serie de cellules d'electrolyse pour la production d'aluminium comportant des moyens pour equilibrer les champs magnetiques en extremite de file |
US8048286B2 (en) * | 2006-07-11 | 2011-11-01 | Bharat Aluminum Company Limited | Aluminum reduction cell fuse technology |
GB2549731A (en) * | 2016-04-26 | 2017-11-01 | Dubai Aluminium Pjsc | Busbar system for electrolytic cells arranged side by side in series |
RU2643005C1 (ru) * | 2017-03-24 | 2018-01-29 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Ошиновка для алюминиевых электролизеров большой мощности |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054399B2 (ja) * | 1982-04-30 | 1985-11-29 | 住友アルミニウム製錬株式会社 | アルミニウム製造用電解炉 |
CH648065A5 (de) * | 1982-06-23 | 1985-02-28 | Alusuisse | Schienenanordnung fuer elektrolysezellen einer aluminiumhuette. |
FR2552782B1 (fr) * | 1983-10-04 | 1989-08-18 | Pechiney Aluminium | Cuve d'electrolyse a intensite superieure a 250 000 amperes pour la production d'aluminium par le procede hall-heroult |
EP0185822B1 (fr) | 1984-12-28 | 1990-05-16 | Alcan International Limited | Agencement de barres omnibus pour cellules électrolytiques de production d'aluminium |
FR2583069B1 (fr) * | 1985-06-05 | 1987-07-31 | Pechiney Aluminium | Dispositif de connexion entre cuves d'electrolyse a tres haute intensite, pour la production d'aluminium, comportant un circuit d'alimentation et un circuit independant de correction du champ magnetique |
FR2583068B1 (fr) * | 1985-06-05 | 1987-09-11 | Pechiney Aluminium | Circuit de connexion electrique de series de cuves d'electrolyse pour la production d'aluminium sous tres haute intensite |
FR2753727B1 (fr) | 1996-09-25 | 1998-10-23 | Procede de regulation de la temperature du bain d'une cuve d'electrolyse pour la production d'aluminium |
-
1999
- 1999-02-05 FR FR9901529A patent/FR2789407B1/fr not_active Expired - Fee Related
-
2000
- 2000-01-31 AR ARP000100413A patent/AR022463A1/es active IP Right Grant
- 2000-02-01 DE DE60000721T patent/DE60000721T2/de not_active Expired - Fee Related
- 2000-02-01 WO PCT/FR2000/000228 patent/WO2000046429A1/fr active IP Right Grant
- 2000-02-01 US US09/890,764 patent/US6551473B1/en not_active Expired - Fee Related
- 2000-02-01 NZ NZ512913A patent/NZ512913A/xx unknown
- 2000-02-01 RU RU2001124565/02A patent/RU2227179C2/ru active
- 2000-02-01 AU AU23010/00A patent/AU764224B2/en not_active Ceased
- 2000-02-01 EP EP00901689A patent/EP1155167B1/fr not_active Expired - Lifetime
- 2000-02-01 CA CA002361671A patent/CA2361671A1/fr not_active Abandoned
- 2000-02-01 BR BR0007986-3A patent/BR0007986A/pt not_active Application Discontinuation
- 2000-02-02 EG EG20000120A patent/EG21884A/xx active
- 2000-02-05 GC GCP2000514 patent/GC0000125A/xx active
-
2001
- 2001-07-10 ZA ZA200105654A patent/ZA200105654B/en unknown
- 2001-07-27 NO NO20013714A patent/NO20013714L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE60000721T2 (de) | 2003-09-18 |
EG21884A (en) | 2002-04-30 |
EP1155167A1 (fr) | 2001-11-21 |
GC0000125A (en) | 2005-06-29 |
US6551473B1 (en) | 2003-04-22 |
RU2227179C2 (ru) | 2004-04-20 |
FR2789407B1 (fr) | 2001-03-23 |
AU764224B2 (en) | 2003-08-14 |
WO2000046429A1 (fr) | 2000-08-10 |
AU2301000A (en) | 2000-08-25 |
ZA200105654B (en) | 2002-05-30 |
NO20013714L (no) | 2001-10-05 |
NZ512913A (en) | 2003-03-28 |
FR2789407A1 (fr) | 2000-08-11 |
BR0007986A (pt) | 2001-11-06 |
CA2361671A1 (fr) | 2000-08-10 |
NO20013714D0 (no) | 2001-07-27 |
AR022463A1 (es) | 2002-09-04 |
DE60000721D1 (de) | 2002-12-12 |
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