EP0097613A1 - Agencement de barres d'amenée de courant pour cellules d'electrolyse - Google Patents

Agencement de barres d'amenée de courant pour cellules d'electrolyse Download PDF

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Publication number
EP0097613A1
EP0097613A1 EP83810225A EP83810225A EP0097613A1 EP 0097613 A1 EP0097613 A1 EP 0097613A1 EP 83810225 A EP83810225 A EP 83810225A EP 83810225 A EP83810225 A EP 83810225A EP 0097613 A1 EP0097613 A1 EP 0097613A1
Authority
EP
European Patent Office
Prior art keywords
cell
bar ends
cathode bar
group
electrolysis
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.)
Granted
Application number
EP83810225A
Other languages
German (de)
English (en)
Other versions
EP0097613B1 (fr
Inventor
Jean-Marc Blanc
Hans Pfister
Otto Knaisch
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Priority to AT83810225T priority Critical patent/ATE21128T1/de
Publication of EP0097613A1 publication Critical patent/EP0097613A1/fr
Application granted granted Critical
Publication of EP0097613B1 publication Critical patent/EP0097613B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 an asymmetrical rail arrangement for guiding the direct electrical current from the cathode bar ends of a transverse aluminum melt flow electrolysis cell to the traverse of the follow-up cell, part of the busbars connected to the upstream cathode bar ends passing under the electrolysis cell.
  • the electrolysis takes place in a temperature range of approximately 940 - 970 ° C.
  • the electrolyte becomes poor in aluminum oxide.
  • aluminum oxide in the electrolyte there is an anode effect, which results in an increase in the voltage from, for example, 4-5 V to 30 V and above.
  • the aluminum oxide concentration must be increased by adding new alumina.
  • the ohmic resistance from the cathode bars to the anodes of the follow-up cell causes energy losses in the order of up to 1 kWh / kg of aluminum produced. It has therefore been repeatedly tried to optimize the arrangement of the busbars with respect to the ohmic resistance.
  • the vertical components of magnetic induction formed must also be taken into account, which - together with the horizontal current density components - generate a force field in the liquid metal obtained through the reduction process.
  • the electrical direct current is supplied from the K ohleboden the cell embedded cathode bars collected and occurs with respect to the general current direction generally from the upstream and downstream lying ends.
  • the iron cathode bars are connected to aluminum busbars via flexible straps.
  • the busbars which are usually combined to form busbars, direct the direct current into the area of the subsequent cell, where the current is led via other flexible belts and via risers to the crossmember carrying the anodes.
  • the Steiglei Depending on the type of cell, the lines are electrically conductively connected to the front and / or one long side of the traverse.
  • GB-PS 1 032 810 discloses within the scope of an invention which relates to cell encapsulation that the busbars can be arranged below the electrolysis cell. According to FIG. 2, current guides 135 are guided symmetrically below the cell with respect to the transverse direction of the furnace and fed symmetrically into the traverse of the subsequent cell.
  • a rail guide is sought with which the magnetic effects are not increased if the current strength is increased.
  • part of the current exiting the cathode bar ends upstream, but less than half, is carried out under the cell.
  • the rest of the current emerging upstream from the cathode bar ends is concentrated around the end faces of the cell.
  • the current under the cell through leading conductors in the middle of the electrolytic cell and are designed as busbars.
  • the feed into the traverse of the subsequent cell is symmetrical with respect to the furnace cross axis at four points on the longitudinal side of the traverse.
  • a ucn US Pat. No. 4,313,811 relates to a rail arrangement for guiding the direct electrical current from the cathode bar ends of a transversely placed electrolytic cell to the traverse of the subsequent cell.
  • the rails connected to the upstream cathode bar ends are alternately arranged individually under the electrolysis cell and in packets around the electrolysis cell.
  • the alternating groups consist of 1 - 5 rails, preferably about a quarter of the total current is carried out under the electrolysis cell.
  • Asymmetry is understood to mean the difference between the currents flowing around the two end faces, expressed in% of the total current flowing from the upstream cathode bar ends.
  • the group of rails passing through in the middle cell area is preferably connected to 15-30% of the upstream cathode bar ends.
  • the group arranged in the middle cell area is shifted by 3 - 30%, preferably 3 - 20%, with respect to the transverse cell axis, by guide rails under the electrolysis cell, namely from the neighboring cell row, which the electrical DC current leads the way.
  • the busbars connected to the other cathode bar ends arranged on the upstream side lead around the respectively closer face of the electrolysis cell if they lead past the busbars leading under the electrolysis cell in the longitudinal direction of the cell. In other words, the entire current that emerges from the upstream cathode bars and does not flow under the electrolysis cell is never conducted around the same end face. As a result, more current is conducted around the face of the electrolytic cell that is closer to the neighboring cell row. The asymmetry thus generated compensates for the harmful magnetic influences of the neighboring cell row.
  • the group of busbars which pass through the electrolysis cell and are located in the middle cell area are arranged symmetrically with respect to the cell transverse axis.
  • the asymmetry is generated in that 3-35%, preferably 3-20%, of the cathode bar ends facing away from the neighboring cell row and located immediately next to the group of busbars leading through the electrolysis cell are connected to at least one busbar which is around the "wrong" end face of the electrolytic cell.
  • the expression “wrong” means that this busbar (s) runs in the longitudinal direction of the cell under the electrolysis cell group of busbars passed through and thus generates the asymmetry / s. All of the busbars connected to the remaining, upstream cathode bar ends run normally around the respectively closer face of the electrolysis cell, without passing in the longitudinal direction of the group of busbars leading through the electrolysis cell.
  • the two variants described above can be combined with one another.
  • the group of conductors located under the electrolysis cell in the middle cell area can normally be displaced by 3 to 30% or somewhat less, for example by 3 to 27%, preferably by 3 to 17 % , in the direction pointing away from the neighboring cell row.
  • the number of cathode bar ends located upstream, which are directly next to the group arranged in the central cell area, on its side facing away from the neighboring cell row, with at least one end face facing the neighboring cell row are connected to the busbar leading around the electrolysis cell, normally left at 3 - 35% or appropriately reduced somewhat, preferably to 3 - 20%.
  • the risers which take up the entire electrical current from the upstream and downstream cathode bar ends, preferably open laterally into the traverse of the subsequent cell, i.e. in the long side.
  • the connection of the two outer risers is preferably at least 5%, based on the length of the crossbar, displaced inwards from the end face.
  • the risers expediently 3-4, are expediently guided symmetrically with respect to the transverse cell axis to the traverse of the following cell.
  • cathode bars In the electrolytic cell 10 of FIG. 1 there are 24 cathode bars with cathode bar ends upstream and downstream 14 with respect to the general current direction I. These iron cathode bar ends 12, 14 are connected to aluminum rails, which conduct the current to the traverse 16 of the subsequent cell.
  • busbars 18 are passed under the electrolytic cell. These busbars 18 are in relation to the cell transverse axis Q, i.e. the symmetrical position by two cathode bars in the direction of the end face 20 of the electrolytic cell 10 facing away from the neighboring cell row. In the present example, 16.7% of the current emerging from the upstream cathode bar ends 12 is conducted through individual conductor rails 18 under the electrolysis cell 10.
  • the current from 12 cathode bar ends flows over the busbars 24, which are guided around the end face 22 of the electrolysis cell 10 facing the row of neighboring cells.
  • only the current of 8 cathode bar ends ends over the busbars 26, which are guided around the end face 20 of the electrolysis cell 10 facing away from the neighboring cell row. This asymmetry of 4 is caused by a shift of the group G by 8.3%.
  • the busbars 24, 26 merge with busbars from the downstream cathode bar ends 14 and lead to the traverse 16 in four risers 28, 30, 32, 34 arranged symmetrically with respect to the cell transverse axis Q. the following cell 36. They open into the longitudinal sides of the cross member 16, the outer risers 28, 34 are each indented by about 10%, based on the total cross member length, from the end face thereof.
  • the group G of the four under the electrolysis cell is guided symmetrically with respect to the cell transverse axis Q by leading conductor rails 18. As in FIG. 1, they carry out 16.7% of the current emerging from the upstream cathode bar ends 12 under the electrolysis cell.
  • the asymmetry is generated in that the current from two upstream cathode bar ends 12 is guided by a bus bar 38 in the longitudinal direction of the electrolytic cell 10 past the group G to the "wrong" end face 22 of the electrolytic cell 10.
  • These current rails 24 (which also contain the current of the current rail 38) lead around the end face 22 facing the row of adjacent cells and conduct the current from 12 cathode bar ends located upstream.
  • the busbars 26 leading around the end face 20 facing away from the neighboring cell row on the other hand, only conduct the current from 8 cathode bar ends located upstream. This results in an asymmetry of 4.
  • the riser lines 28, 30, 32, 34 arranged in accordance with FIG. 1 conduct the direct electrical current into two branches of the traverse 16 of the following cell 36.
  • busbars 18 In the case of the busbars 18, it is essential that they are carried out individually under the electrolysis cell in accordance with the distance between the cathode bars.
  • the Busbars 24, 26, on the other hand, can be bundled individual conductors or a single conductor with a corresponding cross section.

Landscapes

  • 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)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Waveguide Aerials (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Inert Electrodes (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Fuel Cell (AREA)
EP83810225A 1982-06-23 1983-05-31 Agencement de barres d'amenée de courant pour cellules d'electrolyse Expired EP0097613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83810225T ATE21128T1 (de) 1982-06-23 1983-05-31 Schienenanordnung fuer elektrolysezellen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3838/82 1982-06-23
CH3838/82A CH648065A5 (de) 1982-06-23 1982-06-23 Schienenanordnung fuer elektrolysezellen einer aluminiumhuette.

Publications (2)

Publication Number Publication Date
EP0097613A1 true EP0097613A1 (fr) 1984-01-04
EP0097613B1 EP0097613B1 (fr) 1986-07-30

Family

ID=4264560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810225A Expired EP0097613B1 (fr) 1982-06-23 1983-05-31 Agencement de barres d'amenée de courant pour cellules d'electrolyse

Country Status (10)

Country Link
US (1) US4474611A (fr)
EP (1) EP0097613B1 (fr)
AT (1) ATE21128T1 (fr)
AU (1) AU563942B2 (fr)
CA (1) CA1232868A (fr)
CH (1) CH648065A5 (fr)
DE (1) DE3364929D1 (fr)
IS (1) IS1260B6 (fr)
NO (1) NO161688C (fr)
ZA (1) ZA834224B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0185822A1 (fr) * 1984-12-28 1986-07-02 Alcan International Limited Agencement de barres omnibus pour cellules électrolytiques de production d'aluminium
EP0345959A1 (fr) * 1988-06-06 1989-12-13 Norsk Hydro A/S Agencement de conducteurs concernant des cuves d'électrolyse placées en travers
WO2000046429A1 (fr) * 1999-02-05 2000-08-10 Aluminium Pechiney Arrangement de cuves d'electrolyse pour la production d'aluminium

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4976841A (en) * 1989-10-19 1990-12-11 Alcan International Limited Busbar arrangement for aluminum electrolytic cells
FR2806742B1 (fr) 2000-03-24 2002-05-03 Pechiney Aluminium Implantation d'installations d'une usine d'electrolyse pour la production d'aluminium
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
FI121472B (fi) * 2008-06-05 2010-11-30 Outotec Oyj Menetelmä elektrodien järjestämiseksi elektrolyysiprosessissa, elektrolyysijärjestelmä ja menetelmän käyttö ja/tai järjestelmän käyttö
CN103243350B (zh) * 2013-05-20 2015-10-21 中南大学 一种降低铝液水平电流的铝电解槽侧部导电阴极结构
US10128486B2 (en) 2015-03-13 2018-11-13 Purdue Research Foundation Current interrupt devices, methods thereof, and battery assemblies manufactured therewith
GB2542588B (en) * 2015-09-23 2019-04-03 Dubai Aluminium Pjsc Cathode busbar system for electrolytic cells arranged side by side in series

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333060A1 (fr) * 1975-11-28 1977-06-24 Pechiney Aluminium Procede et dispositif pour la compensation des champs magnetiques des files voisines de cuves d'electrolyse ignee placees en travers
GB2027056A (en) * 1978-08-04 1980-02-13 Alusuisse Electrolytic reduction cell with compensating components in its magnetic field

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5216843B2 (fr) * 1973-10-26 1977-05-12
FR2324761A1 (fr) * 1975-09-18 1977-04-15 Pechiney Aluminium Procede et dispositif pour l'alimentation en courant electrique des cuves d'electrolyse ignee placees en travers
CH648605A5 (de) * 1980-06-23 1985-03-29 Alusuisse Schienenanordnung einer elektrolysezelle.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333060A1 (fr) * 1975-11-28 1977-06-24 Pechiney Aluminium Procede et dispositif pour la compensation des champs magnetiques des files voisines de cuves d'electrolyse ignee placees en travers
GB2027056A (en) * 1978-08-04 1980-02-13 Alusuisse Electrolytic reduction cell with compensating components in its magnetic field

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0185822A1 (fr) * 1984-12-28 1986-07-02 Alcan International Limited Agencement de barres omnibus pour cellules électrolytiques de production d'aluminium
EP0345959A1 (fr) * 1988-06-06 1989-12-13 Norsk Hydro A/S Agencement de conducteurs concernant des cuves d'électrolyse placées en travers
WO2000046429A1 (fr) * 1999-02-05 2000-08-10 Aluminium Pechiney Arrangement de cuves d'electrolyse pour la production d'aluminium
FR2789407A1 (fr) * 1999-02-05 2000-08-11 Pechiney Aluminium Arrangement de cuves d'electrolyse pour la production d'aluminium

Also Published As

Publication number Publication date
EP0097613B1 (fr) 1986-07-30
ATE21128T1 (de) 1986-08-15
IS2813A7 (is) 1983-12-24
NO161688B (no) 1989-06-05
IS1260B6 (is) 1986-11-24
AU1595183A (en) 1984-01-05
CA1232868A (fr) 1988-02-16
CH648065A5 (de) 1985-02-28
NO832244L (no) 1983-12-27
DE3364929D1 (en) 1986-09-04
NO161688C (no) 1989-09-13
AU563942B2 (en) 1987-07-30
US4474611A (en) 1984-10-02
ZA834224B (en) 1984-03-28

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