EP2989235B1 - Bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation - Google Patents

Bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation Download PDF

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Publication number
EP2989235B1
EP2989235B1 EP14721300.3A EP14721300A EP2989235B1 EP 2989235 B1 EP2989235 B1 EP 2989235B1 EP 14721300 A EP14721300 A EP 14721300A EP 2989235 B1 EP2989235 B1 EP 2989235B1
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EP
European Patent Office
Prior art keywords
cathode block
cathode
groove
recess
busbar
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.)
Active
Application number
EP14721300.3A
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German (de)
English (en)
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EP2989235A1 (fr
EP2989235B9 (fr
Inventor
Frank Hiltmann
Markus Pfeffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Cobex GmbH
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Cobex GmbH
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Publication date
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Priority to EP19166841.7A priority Critical patent/EP3546620B1/fr
Priority to PL19166841T priority patent/PL3546620T3/pl
Priority to PL14721300T priority patent/PL2989235T3/pl
Publication of EP2989235A1 publication Critical patent/EP2989235A1/fr
Publication of EP2989235B1 publication Critical patent/EP2989235B1/fr
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Publication of EP2989235B9 publication Critical patent/EP2989235B9/fr
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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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • 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 present invention relates to a cathode block for an aluminum electrolysis cell, its use and a cathode assembly comprising the same.
  • Electrolysis cells are used, for example, for the electrolytic production of aluminum, which is usually carried out industrially by the Hall-Heroult process.
  • a melt composed of alumina and cryolite is electrolyzed.
  • the cryolite, Na 3 [AlF 6 ] serves to lower the melting point from 2045 ° C. for pure aluminum oxide to approximately 950 ° C. for a mixture containing cryolite, aluminum oxide and additives such as aluminum fluoride and calcium fluoride.
  • the electrolytic cell used in this method has a cathode bottom, which is composed of a plurality of, for example, up to 28 adjacent cathode blocks forming the cathode.
  • the spaces between the cathode blocks are usually filled with a carbon-containing ramming mass to seal the cathode against molten components of the electrolytic cell, and to compensate for mechanical stresses that occur during commissioning of the electrolysis cell.
  • the cathode blocks are usually composed of a carbonaceous material, such as graphite.
  • each of the cathode blocks On the undersides of the cathode blocks are usually provided in each case grooves, in each of which at least one or two bus bars are arranged, through which the current supplied via the anodes is dissipated.
  • the gaps between the individual walls delimiting the grooves of the cathode blocks and the busbars are often poured with cast iron to to thereby electrically and mechanically connect the bus bars to the cathode blocks by the covering of the bus bars with cast iron produced thereby.
  • layer of liquid aluminum is formed, in particular of individual anode blocks, anode, between the and the surface of the aluminum, the electrolyte, ie the alumina and Cryolite-containing melt is located.
  • the aluminum formed is deposited below the electrolyte layer due to its greater density compared to that of the electrolyte, ie as an intermediate layer between the upper side of the cathode and the electrolyte layer.
  • the dissolved in the melt aluminum oxide is split by electric current flow to aluminum and oxygen.
  • the layer of liquid aluminum is the actual cathode because aluminum ions are reduced to elemental aluminum on its surface.
  • the term cathode will not be understood below to mean the cathode from an electrochemical point of view, ie the layer of liquid aluminum, but rather the component forming the base of the electrolytic cell, for example composed of one or more cathode blocks.
  • a major disadvantage of the cathode assemblies used in the Hall-Heroult method is their relatively low wear resistance, which manifests itself by a removal of the cathode block surfaces during the electrolysis.
  • the removal of the cathode block surfaces due to an inhomogeneous current distribution within the cathode blocks is not uniform over the length of the cathode blocks, but to an increased extent at the cathode block ends, so that the surfaces of the cathode blocks change after a certain electrolysis time to a W-shaped profile.
  • the useful life of the cathode blocks is limited by the locations with the largest removal.
  • a cathode block has been proposed, whose groove for receiving one or more busbars, relative to the cathode block length, has a greater depth in the middle than at the cathode block ends.
  • the bus bar (s) is or are wrapped in a conventional manner with cast iron, said wrapping is done by pouring liquid cast iron in the space between the groove and the or the bus bar (s).
  • Such a cathode block is subject to disadvantages.
  • the cathode block is comparatively large Subjected to temperature changes, which lead to expansion or shrinkage of the cast iron and the bus bar (s) relative to the cathode block. This effect of expansion or shrinkage can be enhanced by occurring temperature gradients.
  • large temperature change (s) it is understood that one or both of said effects, ie, expansion / shrinkage or temperature gradient, is / are present.
  • the cast iron and the bus bar (s) expand with a temperature increase relative to the cathode block, whereas they shrink with a temperature decrease relative to the cathode block.
  • the electrical contact between the busbar, cast iron and cathode block deteriorates, which leads to an increased electrical resistance of the arrangement and thus to a poor energy efficiency of the electrolysis process.
  • the bus bar (s) are movable in the space between the groove and the bus bar (s) both in the vertical and in the horizontal direction before pouring the molten cast iron so that they are poured of the molten cast iron and during the subsequent cooling and solidification of the cast iron can move uncontrollably in the groove, which can also lead to a non-uniform electrical contact between busbar, cast iron and cathode block. This also leads to an increased electrical resistance of the arrangement and thus to a poor energy efficiency of the electrolysis process.
  • the cast iron ramming mass can also be used.
  • ramming mass ramming compounds based on anthracite, graphite and any mixtures thereof can be used.
  • a ramming mass based on graphite is used.
  • DE 2 405 461 and EP 0 052 577 describe a cathode block based on carbon having a groove in whose side walls in each case a recess is present.
  • the at least one depression should run parallel to the groove bottom-that is, obliquely relative to the horizontal direction-that is to say have a constant distance from the bottom wall of the groove, in order to be displaceable the busbar (s) to ensure parallel to the groove bottom.
  • a cathode block for an aluminum electrolytic cell based on carbon and / or graphite wherein the cathode block has at least one extending in the longitudinal direction of the cathode block groove for receiving at least one busbar, wherein at least one of the at least one groove , seen in the length of the cathode block, varying depth, wherein in the at least one groove of varying depth bounding wall of the cathode block at least one recess having a semicircular, triangular, rectangular or trapezoidal cross section is provided, which in the longitudinal direction of the cathode block at least extends horizontally over approximately the entire length of the at least one groove.
  • the recess extends parallel to the longitudinal plane of the cathode block.
  • a parallel extension is understood to mean that the depression has an angle of less than 5 °, particularly preferably less than 2 °, very particularly preferably less than 1 °, most preferably less than 0.5 °, at each of its points. and most preferably less than 0.1 ° to the longitudinal plane of the cathode block.
  • the longitudinal plane is understood to mean the plane which extends in the direction of the longitudinal axis of the cathode block and runs parallel to the surface of the side of the cathode block opposite the groove.
  • a depression in contrast to a mere surface roughness, is understood to be a recess which has a depth of at least 0.5 mm, and preferably of at least 2 mm, relative to the surface of the wall delimiting the groove.
  • a cathode block is created, which also has inserted into the groove and sheathed with cast iron power rail has a low electrical resistance and low contact resistance.
  • the use of a variable depth groove in the longitudinal direction of the cathode block achieves such a uniform current density distribution on the cathode block surface that the operation of the electrolysis cell comprising the cathode block effectively avoids excessive erosion of cathode block material in those areas where, in use Cathode blocks with in the longitudinal direction of the cathode block groove depth same high local current density would be present.
  • the cathode block has in its groove a horizontally extending in the longitudinal direction of the cathode block recess, a vertical fixation of the cast iron sheathed busbar is achieved in the groove of the cathode block, but which some movement in the horizontal direction of the Cathode blocks allowed.
  • At least one of the at least one groove and preferably all of the grooves with varying depth have or have a smaller depth at their longitudinal ends than in FIG their middle (s).
  • a uniform distribution of the electric current supplied in the electrolysis operation is achieved over the entire length of the cathode block, whereby an excessive electric current density at the longitudinal ends of the cathode block and thus premature wear at the ends of the cathode block is avoided.
  • Another particular advantage of this embodiment is that in this embodiment of the groove provided in the recess of the groove possibly sheathed with cast iron busbar (s) during and after the occurring during commissioning of the electrolytic cell increasing the temperature in the horizontal direction expands As a result, the bus bar (s) are respectively pressed against the bottom wall of the cathode block delimiting the groove at this point, whereby the contact resistance between the busbar-covered bus bar and the cathode block is reduced.
  • the depth of at least one of the at least one groove of varying depth, seen in the longitudinal direction of the cathode block, preferably at least substantially monotonically increases from one longitudinal end to the center of the cathode block and takes it from the center to the other longitudinal side End of the cathode block at least substantially monotonically, so that, as seen in the longitudinal section of the cathode block, results in an at least substantially triangular groove.
  • the wall bounding the at least one groove of varying depth comprises a bottom wall and two side walls, each of the two side walls each having at least one recess extending horizontally in the longitudinal direction of the cathode block.
  • the wall bounding the at least one groove of varying depth comprises a bottom wall and two side walls, each side wall each having exactly one recess extending horizontally in the longitudinal direction of the cathode block.
  • a particularly good vertical fixation of the busbar in the groove is achieved at a comparatively low production cost, at the same time sufficiently high mobility in the horizontal direction to reliably avoid the occurrence of shear stresses due to the different thermal expansion coefficients of cast iron, busbar and cathode block at large temperature changes ,
  • the wall bounding the at least one groove of varying depth comprises a bottom wall and two side walls, each side wall each having two recesses each extending horizontally in the longitudinal direction of the cathode block.
  • the cathode block may have two grooves arranged on the same side of the cathode block, wherein both grooves have the same dimensions and the limiting walls each comprise a bottom wall and two side walls, each side wall each having a recess which extends horizontally in the longitudinal direction of the cathode block, or wherein each side wall each has two recesses extending horizontally in the longitudinal direction of the cathode block.
  • the cathode block may also comprise only one groove.
  • the at least one recess extends at least approximately over the entire length of the at least one groove.
  • At least one of the at least one recess and more preferably each of the at least one recess has a depth of 0.5 mm to 40 mm, preferably 2 mm to 30 mm, and more preferably 5 mm to 20 mm having.
  • At least one of the at least one depression, and more preferably each of the at least one depression has an opening width of 2 mm to 40 mm, preferably 5 mm to 30 mm and more preferably of the cathode block 10 mm to 20 mm.
  • the at least one recess can have any polygonal or curved cross section.
  • Good results with regard to a good engagement of the cast iron casing in the at least one depression and at the same time with regard to a reliable and unproblematic fillability of the recess with cast iron during casting are achieved in particular if at least one of the at least one depression and particularly preferably each of the at least one depression an at least substantially semicircular, triangular, has rectangular or trapezoidal, preferably semi-circular, triangular, rectangular or trapezoidal, cross-section.
  • the at least one recess extends at least substantially perpendicularly, preferably perpendicularly, into the wall of the cathode block bounding the at least one groove.
  • the at least one depression viewed in the depth direction of the groove, is delimited at each of its ends by a transitional area between the depression and an adjoining portion of the groove wall.
  • the angle between the adjacent portion of the groove wall and the wall of the depression, viewed from the cathode block inner side is preferably 90 degrees to 160 degrees, more preferably 90 degrees to 135 degrees, and most preferably 100 degrees to 120 Degree.
  • the radius of curvature of the transition region is preferably at most 50 mm, more preferably at most 20 mm and most preferably at most 5 mm.
  • the present invention relates to a cathode assembly, which contains at least one cathode block described above, wherein at least one of the at least one groove with varying depth of the at least one cathode block at least one bus bar is provided which at least partially has a cladding made of cast iron, which at least partially in which engages at least one depression.
  • the portion of the cast-iron casing engaging in the at least one recess is designed to be complementary to the recess.
  • a particularly good positive engagement of the casing of cast iron in the recess and thus a particularly effective mechanical attachment of the cast iron casing and the associated bus bar to the cathode block can be achieved, which nevertheless due to avoid shear stress between cast iron, busbar and cathode block of large temperature changes sufficient mobility of the busbar in the horizontal direction allows.
  • the cast iron shell engages over at least 50%, more preferably at least 80%, more preferably at least 90%, most preferably at least 95%, and most preferably at least substantially all of its length into the at least one recess.
  • the advantages described above are achieved to a particularly high degree.
  • the portion of the envelope engaging in the at least one recess and possibly the conductor rail covered therewith at least 70%, preferably at least 80%, particularly preferably at least 90%, completely more preferably at least 95% and most preferably 100% of the well fills.
  • the cathode block of the cathode arrangement has a groove with an at least substantially rectangular, preferably a rectangular, cross-section and in the groove one or two adjacent busbar (s) are used, wherein the gap between the groove and the busbar (s) is filled with cast iron so that the cast iron on at least substantially the same entire length engages the at least one recess.
  • a further subject of the present invention is a cathode, which comprises at least one previously described cathode block or at least one previously described cathode arrangement.
  • the present invention relates to the use of a previously described cathode block, a previously described cathode assembly or a previously described cathode for performing a fused-salt electrolysis to produce metal, preferably for the production of aluminum.
  • Another object of the present invention is a cathode assembly comprising at least one previously described cathode block.
  • the present invention relates to the use of a previously described cathode block, a previously described cathode assembly for carrying out a fused-salt electrolysis for the production of metal, preferably for the production of aluminum.
  • Fig. 1 is a cross section of a section of an aluminum electrolytic cell 10 is shown with a cathode assembly 12, which simultaneously forms the bottom of a trough for an aluminum melt 14 produced during operation of the electrolytic cell 10 and for above the molten aluminum 14 located cryolite-alumina melt 16. With the cryolite-alumina melt 16 is an anode 18 in contact. Laterally formed by the lower part of the aluminum electrolysis cell 10 trough by a in the Fig. 1 not shown lining of carbon and / or graphite limited.
  • the cathode arrangement 12 comprises a plurality of cathode blocks 20, which are each connected to one another via a ramming mass 24 inserted into a ramming mass gap 22 arranged between the cathode blocks 20.
  • a cathode block 20 in this case comprises two grooves 26 arranged on its underside and having a rectangular, namely substantially rectangular cross section, wherein in each case Groove 26 each a bus bar 28 made of steel is also included with rectangular cross-section.
  • the grooves 26 are each bounded by two side walls 32 and a bottom wall 34 of the cathode block 20, wherein in each of the side walls 32 is provided a substantially perpendicular in the side wall 32 extending recess 36 having an approximately semicircular cross-section.
  • Each recess 36 is bounded by an upper and a lower transition region 37 of the cathode block 20, respectively.
  • the transition areas 37 are formed in the present embodiment at an angle ⁇ between the adjacent portion of the groove wall and the wall of the recess of 90 degrees.
  • the space between the busbar 28 and the groove 26 is in each case cast with cast iron 38. In this case, the cast iron 38 forms an enclosure 39 for the busbar 28 and is connected to the busbar 28 in a material-locking connection.
  • the received in the wells 36 cast iron 38 forms with the recess 36 delimiting material of the cathode block 20 each have a positive connection, which prevents movement of the connected to the cast iron 38 busbar 28 in the direction of the arrow 40.
  • the cross section of the cathode assembly 12 is shown at a longitudinal end of the cathode block 20.
  • the depth of the groove 26 of the cathode block 20 varies over the length of the groove 26.
  • the groove cross-section in the region of - relative to the longitudinal direction of the cathode block - the middle of the groove 26 is in the Fig. 1 indicated by a dashed line 42.
  • the difference between the groove depth at the longitudinal ends of the groove 26 and in the - with respect to the longitudinal direction of the cathode block - the middle of the groove 26 in the present embodiment is about 5 cm.
  • the depth of the groove 26 at the two longitudinal ends of the groove 26 is about 16 cm, whereas the depth the groove 26 in the - relative to the longitudinal direction of the cathode block - center of the groove 26 is about 21 cm.
  • the width 44 of each groove 26 is substantially constant over the entire groove length and is about 15 cm, whereas the width 46 of the cathode blocks 20 is about 42 cm each.
  • a plurality of anodes 18 and a plurality of cathode blocks 20 are arranged one above the other so that each anode 18 covers two juxtaposed cathode blocks 20 and covers in length half of a cathode block 20, wherein each two juxtaposed anodes 18 the length of a Cover cathode block 20.
  • the Fig. 2 shows the in the Fig. 1 shown cathode block 20 in longitudinal section.
  • the groove 26 viewed in its longitudinal section extends toward the center of the cathode block 20 in the shape of a triangle, thereby ensuring a substantially uniform electrical vertical current density over the entire cathode length.
  • the recess 36 extends as in the Fig. 2 indicated by the corresponding marked line parallel to the horizontal direction, ie parallel to the surface of the groove 26 opposite side of the cathode block 20.
  • busbar 28 is bar-shaped in the present embodiment and has a rectangular longitudinal section, so that between the busbar and the groove bottom 34 to the middle of the groove 26 toward increasing interspace consists of either by cast iron 38 or through additional metal plates connected to the busbar 28 may be filled.
  • cathode assembly and cathode block according to a second embodiment of the present invention differs from that in the Fig. 1 and 2 shown thereby, that in the cathode block 20, only one groove 26 is provided, which has two recesses 36,36 '.
  • Fig. 5a to d exemplary depressions 36 which are provided in a groove 26 of a cathode block 20 according to the invention, in cross section.
  • the recesses 36 each have a substantially semicircular cross-section ( Fig. 5a ), a substantially trapezoidal cross section ( Fig. 5b ) or a substantially triangular cross section ( Fig. 5c ) on.
  • the angle ⁇ of the transition regions 37 between the wall of the recess 36 and the adjacent portion of the groove wall 32, viewed from the inside of the cathode block 20, is in Fig. 5a about 90 degrees, in the Fig. 5b about 120 degrees and in the Fig. 5c about 125 degrees.
  • the Fig. 5a about 90 degrees
  • Fig. 5b about 120 degrees
  • Fig. 5c about 125 degrees.
  • FIG. 5d shows an embodiment in which several as in the Fig. 5c shown depressions 36 are arranged with triangular cross-section in the depth direction of the groove 26 consecutively to effect a particularly reliable support of a bus bar 28 used.
  • the transition regions 48 between two adjoining recesses 36 have between the walls of two adjacent recesses 36, seen from the inside of the cathode block 20, an angle ß of about 70 degrees.
  • depressions 36 each extend perpendicularly into the groove 26 delimiting side wall 32 of the cathode block 20 so that they form a recorded in the recesses 36 cast iron, which is effective in the depth direction of the groove 26 and an unwanted movement of the bus bar 28 parallel to prevents the depth direction of the groove 26 after pouring the bus bar 28 with cast iron 38, but a horizontal movement of the cast iron sheathed busbar - for example, due to an expansion of the cast iron sheathed busbar due to a large change in temperature - allows.

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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)

Claims (7)

  1. Bloc cathodique (20) pour une cellule d'électrolyse d'aluminium à base de carbone et/ou de graphite, dans lequel le bloc cathodique (20) présente au moins une rainure (26) s'étendant dans la direction longitudinale du bloc cathodique (20) destinée à recevoir au moins une barre conductrice (28), dans lequel au moins une de l'au moins une rainure (26) présente une profondeur variable sur la longueur dudit bloc cathodique (20), dans lequel ladite au moins une rainure (26) de profondeur variable comprend une paroi d'extrémité (32, 34) du bloc cathodique (20), dans lequel au moins un évidement (36, 36') est prévu dans au moins une paroi latérale (32) ayant une section transversale semi-circulaire, triangulaire, rectangulaire ou trapézoïdale qui s'étend horizontalement dans la direction longitudinale du bloc cathodique (20), horizontal renvoyant au fait que l'au moins un évidement (36, 36') présente, à tout point, un angle inférieur à 5 par rapport au niveau du bloc cathodique (20), lequel angle s'étend dans la direction de l'axe longitudinal du bloc cathodique (20) au moins approximativement sur toute la longueur de l'au moins une rainure et est parallèle à la surface de la face du bloc cathodique (20) opposée à la rainure.
  2. Bloc cathodique (20) selon la revendication 1, caractérisé en ce qu'au moins une desdites au moins une rainure (26) de profondeur variable a une profondeur plus petite à ses extrémités longitudinales par rapport à son centre,
  3. Bloc cathodique (20) selon la revendication 1 ou 2, caractérisé en ce que l'au moins une rainure (26) ayant une paroi d'extrémité (32, 34) de profondeur variable comprend une paroi inférieure (34) et deux parois latérales (32), chaque paroi latérale (32) comportant au moins un évidement (36, 36'), qui s'étend horizontalement dans la direction longitudinale du bloc cathodique (20).
  4. Bloc cathodique (20) selon la revendication 3, caractérisé en ce qu'au moins un desdits au moins un évidement (36, 36') a une profondeur comprise entre 0,5 mm et 40 mm.
  5. Bloc cathodique (20) selon la revendication 4, caractérisé en ce qu'au moins un desdits au moins un évidement (36, 36') a une largeur d'ouverture comprise entre 2 et 40 mm par rapport à la hauteur du bloc cathodique (20).
  6. Agencement de cathode (12) qui contient au moins un bloc cathodique (20) selon au moins l'une des revendications 1 à 5, dans lequel au moins une barre conductrice est prévue dans au moins une de l'au moins une rainure (26) ayant une profondeur variable de l'au moins un bloc cathodique (20), laquelle barre conductrice (28) présente au moins par endroits des zones une enveloppe (39) en fonte (38) ou en pisé qui s'engage au moins partiellement dans ledit au moins un évidement (36, 36').
  7. Utilisation d'un bloc cathodique (20) selon au moins l'une des revendications 1 à 5 ou d'un agencement de cathode (12) selon la revendication 6 pour réaliser une électrolyse ignée pour la production de métal, de préférence pour la production d'aluminium.
EP14721300.3A 2013-04-26 2014-04-25 Bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation Active EP2989235B9 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19166841.7A EP3546620B1 (fr) 2013-04-26 2014-04-25 Agencement de cathode avec bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation
PL19166841T PL3546620T3 (pl) 2013-04-26 2014-04-25 Układ katod z blokiem katodowym zaopatrzonym w rowek o zmiennej głębokości i mechanizm mocujący
PL14721300T PL2989235T3 (pl) 2013-04-26 2014-04-25 Blok katody z rowkiem o zmiennej głębokości i urządzeniem ustalającym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013207737.8A DE102013207737A1 (de) 2013-04-26 2013-04-26 Kathodenblock mit einer Nut mit variierender Tiefe und einer Fixiereinrichtung
PCT/EP2014/058478 WO2014174089A1 (fr) 2013-04-26 2014-04-25 Bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation

Related Child Applications (2)

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EP19166841.7A Division-Into EP3546620B1 (fr) 2013-04-26 2014-04-25 Agencement de cathode avec bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation
EP19166841.7A Division EP3546620B1 (fr) 2013-04-26 2014-04-25 Agencement de cathode avec bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation

Publications (3)

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EP2989235A1 EP2989235A1 (fr) 2016-03-02
EP2989235B1 true EP2989235B1 (fr) 2019-06-12
EP2989235B9 EP2989235B9 (fr) 2023-11-15

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EP14721300.3A Active EP2989235B9 (fr) 2013-04-26 2014-04-25 Bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation
EP19166841.7A Active EP3546620B1 (fr) 2013-04-26 2014-04-25 Agencement de cathode avec bloc cathodique muni d'une rainure de profondeur variable et d'un dispositif de fixation

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EP (2) EP2989235B9 (fr)
JP (1) JP6808485B2 (fr)
CN (1) CN105247109B (fr)
CA (1) CA2910233C (fr)
DE (1) DE102013207737A1 (fr)
PL (2) PL2989235T3 (fr)
RU (1) RU2727621C2 (fr)
UA (1) UA117481C2 (fr)
WO (1) WO2014174089A1 (fr)

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DE102016210693A1 (de) * 2016-06-15 2017-12-21 Sgl Cfl Ce Gmbh Kathodenblock aufweisend eine neuartige Nut-Geometrie
CN106929688B (zh) * 2017-04-17 2018-08-17 新疆大学 一种利用铝灰渣制备高纯铝的装置与方法
CN106894052B (zh) * 2017-04-19 2018-10-16 新疆大学 一种制备高纯铝的联体-多级铝电解装置及其使用方法

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CN102181883A (zh) * 2011-04-11 2011-09-14 中南大学 一种可控调节铝液中水平电流的铝电解槽阴极结构

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EP3546620B1 (fr) 2021-12-22
WO2014174089A1 (fr) 2014-10-30
CA2910233A1 (fr) 2014-10-30
RU2020114123A3 (fr) 2021-11-22
CA2910233C (fr) 2018-01-16
CN105247109A (zh) 2016-01-13
RU2020114123A (ru) 2020-06-10
JP6808485B2 (ja) 2021-01-06
PL3546620T3 (pl) 2022-03-28
JP2016516905A (ja) 2016-06-09
PL2989235T3 (pl) 2019-10-31
RU2727621C2 (ru) 2020-07-22
RU2015150375A (ru) 2017-06-02
CN105247109B (zh) 2018-06-05
EP2989235A1 (fr) 2016-03-02
EP2989235B9 (fr) 2023-11-15
EP3546620A1 (fr) 2019-10-02

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