EP0205687A1 - Cellules de réduction pour l'aluminium - Google Patents

Cellules de réduction pour l'aluminium Download PDF

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Publication number
EP0205687A1
EP0205687A1 EP85304224A EP85304224A EP0205687A1 EP 0205687 A1 EP0205687 A1 EP 0205687A1 EP 85304224 A EP85304224 A EP 85304224A EP 85304224 A EP85304224 A EP 85304224A EP 0205687 A1 EP0205687 A1 EP 0205687A1
Authority
EP
European Patent Office
Prior art keywords
cell
busbar
cathode
cells
next downstream
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.)
Withdrawn
Application number
EP85304224A
Other languages
German (de)
English (en)
Inventor
William Shankland
Johannes Franciscus Lablans
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Priority to EP85304224A priority Critical patent/EP0205687A1/fr
Publication of EP0205687A1 publication Critical patent/EP0205687A1/fr
Withdrawn legal-status Critical Current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 cells are conventionally arranged in series with the electric current being passed from the cathode of an upstream cell to the anode of the next downstream cell.
  • Each cell is provided with cathode busbars for collecting current from the cathode thereof and transferring it via anode risers to the anode beam of the next downstream cell.
  • cathode busbars In modern cell design, high level access for routine maintenance and inspection is provided by walkways at approximately the height of the liquid contents of the cell. The cathode busbars run immediately below these walkways and are accessible from them. Low level access from below the bottoms of the cells, is also possible.
  • the invention provides a line of aluminium electrolytic reduction cells connected in series, each cell having a cathode busbar for collecting current from the cathode thereof and transferring it to the anode of the next downstream cell, there being provided means for making an electrical connection between a cathode busbar of one cell and a cathode busbar of the next downstream cell so as to by-pass the said next downstream cell.
  • the means for making an electrical connection between the two cathode busbars comprises a flexible conductor electrically joined to one busbar, and mechanically joined to the other busbar but electrically separated therefrom by an easily removable insulator.
  • FIG. 1 shows a cathode busbar 10 of one aluminium reduction cell and a cathode busbar 12 of an adjacent cell. It is not important which cell is downstream of the other.
  • Mounted at the end of the cathode busbar 12 are two flexible aluminium conductors 14 whose ends are joined to aluminium blocks 16. These two blocks are mounted on either side of the cathode busbar 10 and held in position by means of a bolt 18 extending through a hole in the busbar and washers 20.
  • the blocks 16 are electrically insulated from the busbar 10 by a tube 22 of insulating material surrounding the bolt and within the hole through the busbar; and by plates 24 of insulating material.
  • the shape of the insulating plates 24 is shown in Figure 2. They include a slot 26 which fits over the bolt 18. When in position, the top end of the plate stands proud of the busbar 10 and is provided with a hole 28 constituting a handle by which it may easily and quickly be lifted out of position.
  • the insulating plates 24 are in position, and insulate the busbars 10 and 12 from one another so that both associated cells are in commission.
  • the current is switched off; the nut on the bolt 18 is loosened; the two insulating plates 24 are lifted out of position; the nut is re-tightened; and the current is switched on again.
  • the insulators can be made of any material that is capable of withstanding the required pressure and other conditions; potential difference up to 150 V; temperatures up to 200-300°C. Suitable materials include 4 to 8 mm thick resin impregnated fibreglass tubes and plates.
  • the invention provides the following advantages over the conventional shunting procedure:-

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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)
EP85304224A 1985-06-13 1985-06-13 Cellules de réduction pour l'aluminium Withdrawn EP0205687A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP85304224A EP0205687A1 (fr) 1985-06-13 1985-06-13 Cellules de réduction pour l'aluminium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85304224A EP0205687A1 (fr) 1985-06-13 1985-06-13 Cellules de réduction pour l'aluminium

Publications (1)

Publication Number Publication Date
EP0205687A1 true EP0205687A1 (fr) 1986-12-30

Family

ID=8194260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85304224A Withdrawn EP0205687A1 (fr) 1985-06-13 1985-06-13 Cellules de réduction pour l'aluminium

Country Status (1)

Country Link
EP (1) EP0205687A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034696A1 (fr) * 1994-06-10 1995-12-21 Jmt Engineering Pty. Ltd. Connexion de cathode pour cuve d'electrolyse de l'aluminium
AU697337B2 (en) * 1994-06-10 1998-10-01 Jmt Engineering Pty Ltd Cathode connection for aluminium smelter pot
RU2188259C1 (ru) * 2001-02-02 2002-08-27 Открытое акционерное общество "Сибирско-Уральская алюминиевая компания" Узел шунтирования алюминиевого электролизера
GB2548571A (en) * 2016-03-21 2017-09-27 Dubai Aluminium Pjsc Flexible electrical connector for electrolytic cell

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 91, no. 22, November 1979, page 579, no. 184039c, Columbus, Ohio, US; & PL - A - 100 487 (HUTA ALUMINIUM) 15-02-1979 *
CHEMICAL ABSTRACTS, vol. 97, no. 4, October 1982, page 501, no. 117490d, Columbus, Ohio, US; & SU - A - 933 809 (BRATSK ALUMINUM PLANT) 07-06-1982 *
SOVIET INVENTIONS ILLUSTRATED, Section Chemical, week D18, 10th June 1981, abstract no. 32111 M28, Derwent Publications Ltd., London, GB; & SU - A - 757 606 (ALUM. MAGN. ELECTR. IND.) 23-08-1980 *
SOVIET INVENTIONS ILLUSTRATED, Section Chemical, week D44, 9th December 1981, abstract no. 81367 M28 X25, Derwent Publications Ltd., London, GB; & SU - A - 802 403 (PETROV E.V.) 09-02-1981 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034696A1 (fr) * 1994-06-10 1995-12-21 Jmt Engineering Pty. Ltd. Connexion de cathode pour cuve d'electrolyse de l'aluminium
AU697337B2 (en) * 1994-06-10 1998-10-01 Jmt Engineering Pty Ltd Cathode connection for aluminium smelter pot
US5855758A (en) * 1994-06-10 1999-01-05 Jmt Engineering Pty. Ltd. Cathode connection for aluminium smelter pot and method
RU2188259C1 (ru) * 2001-02-02 2002-08-27 Открытое акционерное общество "Сибирско-Уральская алюминиевая компания" Узел шунтирования алюминиевого электролизера
GB2548571A (en) * 2016-03-21 2017-09-27 Dubai Aluminium Pjsc Flexible electrical connector for electrolytic cell

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Inventor name: SHANKLAND, WILLIAM

Inventor name: LABLANS, JOHANNES FRANCISCUS