EP0371653B1 - Stromschienenanordnung für querliegende Elektrolysezellen - Google Patents

Stromschienenanordnung für querliegende Elektrolysezellen Download PDF

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Publication number
EP0371653B1
EP0371653B1 EP19890311793 EP89311793A EP0371653B1 EP 0371653 B1 EP0371653 B1 EP 0371653B1 EP 19890311793 EP19890311793 EP 19890311793 EP 89311793 A EP89311793 A EP 89311793A EP 0371653 B1 EP0371653 B1 EP 0371653B1
Authority
EP
European Patent Office
Prior art keywords
cell
row
busbars
centre line
cells
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
Application number
EP19890311793
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English (en)
French (fr)
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EP0371653A1 (de
Inventor
Hans Georg Tidemann Nebell
Trond Tvedt
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.)
Norsk Hydro ASA
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Norsk Hydro ASA
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Publication date
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Publication of EP0371653A1 publication Critical patent/EP0371653A1/de
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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

  • a cell in a row is magnetically influenced by the electric current in the neighbouring row(s). Due to the relatively long distance between the rows, the effect of the magnetic field is essentially vertical and overlaps with the magnetic field being created by the electric current in the cell itself and neighbouring cells in the same row. This overlapping magnetic field is unwanted because it provides electromagnetic forces, which in turn cause harmful streaming in the electrolytic bath and the deposited aluminium in the cell and also reduce the stability of the cell.
  • the present invention aims to provide a busbar arrangement which is not encumbered with the above disadvantages, i.e. which substantially compensates for the magnetic influence from the neighbouring row(s) of cells and which has low absolute values for the vertical magnetic field at the corner of the cells.
  • a busbar arrangement is essentially cheaper than the known solutions.
  • a potline for the electrolytic production of aluminium comprises at least two rows of electrolytic cells with the cells arranged transversely in each row, the electric current being conducted from the rear side of each cell in a row to the next cell via two or more busbars which pass under the cell and also around or under the short ends of the cell, the busbars being arranged in an unsymmetrical fashion relative to the centre line of the row of cells and is characterised in that one or more of the busbars beneath the cell are disposed at an angle to the centre line of the row.
  • each cell is provided with five busbars whereof at least one busbar is disposed at each short end of the cell, one busbar is disposed on the side of the centre line of the row which is closer to the neighbouring row, and two busbars are disposed beneath the cell symmetrically with respect to one another on either side of the centre line and stretch outwards from the cathode collecting busbar to the riser on the next cell at an angle to the centre line of the row.
  • the angle between the inclined busbars and the centre line of the row of cells is preferably between 15° and 45° and suitably approximately 26°.
  • Figures 1 and 2 show an example of a busbar arrangement for a 180 kA cell in an aluminium potline.
  • the cell has four risers, S1 - S4, and five busbars k1 - k5 which conduct electric current from the cathode collecting busbar P to the risers.
  • Three of the busbars, k2, k3 and k4 are disposed underneath the cell, while two of the busbars k1 and k5 extend around the short ends of the cell.
  • the busbars k1, k2 and k4, k5 respectively are symmetrically arranged relative to one another on each side of the centre line of the row, whereas the busbar k3 is disposed on the side of the centre line which is closer to the neighbouring row.
  • Such an arrangement where a larger part of the electric current is conducted towards the end of a cell which is closer to the neighbouring row is denoted to be unsymmetric.
  • the current distribution in the five busbars k1 - k5 is, in the example shown, optimised with regard to providing the best possible magnetic field, but normally the inclined busbars are given a cross section such that an essential part, such as more than 40%, of the current is conducted from the rear side of the cells, via these inclined busbars k2 and k5.
  • the position of the busbars k1 - k5 is also optimised with regard to the number of busbars underneath the cells, their positioning and the angle ⁇ the two inclined busbars k2, k4 have relative to the centre line X of the row.
  • the angle ⁇ between the inclined busbars and the centre line is approximately 26°.
  • Theoretically figures show, however, that significant achievement can be obtained with an angle ⁇ between 15° and 40°.
  • busbars Although the invention has been described with reference to five busbars, it may, within the scope of the invention and depending on the size of the cells, be possible to use more or fewer busbars underneath each cell, and to provide more or fewer busbars with an inclined position between the cathode collecting busbars and the risers.

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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)
  • Toys (AREA)
  • Electric Ovens (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (4)

  1. Reihe von Elektrolysezellen zur elektrolytischen Herstellung von Aluminium, die wenigstens zwei Reihen von Elektrolysezellen umfasst, wobei die Zellen in jeder Reihe quer angeordnet sind, elektrischer Strom von der Hinterseite jeder Zelle in einer Reihe zu der nächsten Zelle mittels zweier oder mehrerer Stromschienen geleitet wird, die unter der Zelle und auch um oder unter den kurzen Enden der Zelle verlaufen, wobei die Stromschienen in einer unsymmetrischen Weise relativ zu der Mittellinie der Reihe von Zellen angeordnet sind, dadurch gekennzeichnet, dass eine oder mehrere der Stromschienen unter der Zelle (k2, k4) mit einem Winkel (α) zu der Mittellinie der Reihe angeordnet sind.
  2. Reihe von Elektrolysezellen nach Anspruch 1, dadurch gekennzeichnet, dass jede Zelle mit fünf Stromschienen (k1 - k5) versehen ist, von denen wenigstens eine Stromschiene (k1, beziehungsweise k5) an jedem kurzen Ende der Zelle angeordnet ist, eine Stromschiene (k3) ist auf der Seite der Mittellinie der Reihe angeordnet, die näher an der benachbarten Reihe liegt, und zwei Stromschienen (k2, k4) sind symmetrisch in Bezug aufeinander auf jeder Seite der Mittellinie angeordnet und erstrecken sich nach aussen von der Kathoden sammelnden Stromschiene (P) zu der Steigleitung (S) auf der nächsten Zelle mit einem Winkel (α) zu der Mittellinie (X) der Reihe.
  3. Reihe von Elektrolysezellen nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Winkel (α) zwischen 15° und 45° ist.
  4. Reihe von Elektrolysezellen nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Winkel (α) zwischen jeder der geneigten Stromschienen (k2, k4) und der Mittellinie (X) für die Reihe ungefähr 26° ist.
EP19890311793 1988-11-28 1989-11-15 Stromschienenanordnung für querliegende Elektrolysezellen Expired - Lifetime EP0371653B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO885292A NO166657C (no) 1988-11-28 1988-11-28 Skinnearrangement for store tverrstilte elektrolyseovner.
NO885292 1988-11-28

Publications (2)

Publication Number Publication Date
EP0371653A1 EP0371653A1 (de) 1990-06-06
EP0371653B1 true EP0371653B1 (de) 1993-01-13

Family

ID=19891466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890311793 Expired - Lifetime EP0371653B1 (de) 1988-11-28 1989-11-15 Stromschienenanordnung für querliegende Elektrolysezellen

Country Status (9)

Country Link
EP (1) EP0371653B1 (de)
CN (1) CN1023413C (de)
AU (1) AU623439B2 (de)
BR (1) BR8905984A (de)
DE (1) DE68904406T2 (de)
ES (1) ES2038416T3 (de)
NO (1) NO166657C (de)
NZ (1) NZ230814A (de)
RU (1) RU1833438C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016105204A1 (en) 2014-12-23 2016-06-30 Norsk Hydro Asa A modified electrolysis cell and a method for modifying same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100439566C (zh) * 2004-08-06 2008-12-03 贵阳铝镁设计研究院 大面不等电式五点进电母线配置装置
CN100451177C (zh) * 2004-08-06 2009-01-14 贵阳铝镁设计研究院 非对称式槽底母线配置及电流配置方法
NO322258B1 (no) * 2004-09-23 2006-09-04 Norsk Hydro As En fremgangsmate for elektrisk kobling og magnetisk kompensasjon av reduksjonsceller for aluminium, og et system for dette
NO331318B1 (no) * 2007-04-02 2011-11-21 Norsk Hydro As Fremgangsmate for drift av elektrolyseceller koblet i serie samt samleskinnesystem for samme
FI121472B (fi) * 2008-06-05 2010-11-30 Outotec Oyj Menetelmä elektrodien järjestämiseksi elektrolyysiprosessissa, elektrolyysijärjestelmä ja menetelmän käyttö ja/tai järjestelmän käyttö

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO139829C (no) * 1977-10-19 1979-05-16 Ardal Og Sunndal Verk Anordning for kompensering av skadelig magnetisk paavirkning mellom to eller flere rekker av tverrstilte elektrolyseovner for smelteelektrolytisk fremstilling av aluminium
SU863719A1 (ru) * 1978-02-06 1981-09-15 Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности Ошиновка электролизеров дл получени алюмини
CH656152A5 (de) * 1981-08-18 1986-06-13 Alusuisse Schienenanordnung fuer elektrolysezellen.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016105204A1 (en) 2014-12-23 2016-06-30 Norsk Hydro Asa A modified electrolysis cell and a method for modifying same

Also Published As

Publication number Publication date
NO166657B (no) 1991-05-13
CN1023413C (zh) 1994-01-05
ES2038416T3 (es) 1993-07-16
NO885292D0 (no) 1988-11-28
DE68904406T2 (de) 1993-06-24
CN1043163A (zh) 1990-06-20
NO166657C (no) 1991-08-21
BR8905984A (pt) 1990-06-19
DE68904406D1 (de) 1993-02-25
AU623439B2 (en) 1992-05-14
EP0371653A1 (de) 1990-06-06
NO885292L (no) 1990-05-29
RU1833438C (en) 1993-08-07
NZ230814A (en) 1992-10-28
AU4262189A (en) 1990-05-31

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