US20090127126A1 - Current busbar - Google Patents

Current busbar Download PDF

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Publication number
US20090127126A1
US20090127126A1 US11/791,423 US79142305A US2009127126A1 US 20090127126 A1 US20090127126 A1 US 20090127126A1 US 79142305 A US79142305 A US 79142305A US 2009127126 A1 US2009127126 A1 US 2009127126A1
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US
United States
Prior art keywords
electrode body
conical
bodies
current busbar
during operation
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.)
Abandoned
Application number
US11/791,423
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English (en)
Inventor
Stig Torvund
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20090127126A1 publication Critical patent/US20090127126A1/en
Abandoned legal-status Critical Current

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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 present invention relates to current bus bars for anodes or cathodes for use in production of aluminium by electrolysis of alumina in an electrolysis bath in an electrolysis cell.
  • the above-mentioned demands are met, by providing a novel type of current busbar for anode or cathode for use in production of aluminium from alumina in an electrolysis bath in an electrolysis cell, which current busbar comprises one or more ends or sections that during operation shall extend out of an electrode body, and one or more ends or sections that during operation shall be embedded or within the electrode body.
  • the current busbar is distinguished by comprising both or one of the features as follows:
  • ends or sections that during operation shall be within the electrode body are formed as one or more in substance horizontally oriented conical bodies with largest horizontal cross section diameter within the electrode body, such that by sliding said bodies axially into one or more adapted conical holes in the electrode body said bodies will be embedded and kept into the electrode body, and
  • said conical bodies or elements connected thereto are manufactured from steel or steel over a copper core, and are provided with one or more in substance horizontally formed cylindrical or conical grooves with largest horizontal cross section dimension within said grooves, such that by sliding in correspondingly formed copper rails on the external parts of the busbar, said bodies and rails are releasably joined.
  • conical body an elongated body having increasing or decreasing cross section dimensions over a substantial part of its length, preferably the full length.
  • the corresponding is true for conical holes.
  • Cylindrical does not necessarily mean round cross section, the only requirement is that the cross section is the same along the length.
  • the cross section therefore can be triangular, four-sided, five-sided, round, elliptical, T-formed or take any other form, which also is true for conical bodies, provided that the further distinguishing features are maintained. It is also important to be aware of that the cylindrical body can extend in vertical direction, such that a part of the cylinder body, along the full or parts of its length, can extend out for example from the electrode body.
  • For joining into the electrode body it is not required with cast iron lining, ramming paste, ramming mass or glue, which provides savings both with respect to materials and labour.
  • the conical form ensures good thermal, electrical and mechanical contact even after beginning of wearing out the conical bodies.
  • a copper rail within a steel groove will during operation have very good electrical thermal and mechanical contact because the copper has larger thermal expansion than the steel, such that an appropriate tolerance for joining at room temperature, for example 0.15-0.5 mm clearance, will be filled out by expansion of the copper. Thereby a releasable joining is achieved with good electrical, thermal and mechanical contact, which provides savings with respect to labour and possibility for easy replacement of parts of a current busbar.
  • the cross section of the parts that are to be built into the electrode body has form of a circle, triangle or quadrangle under or below a high and narrow rectangle, such that the largest horizontal dimension of the circle, triangle or quadrangle is at least four times larger than the horizontal dimension of the rectangle. This results in simple and solid fastening.
  • the current busbar according to the invention is preferably formed such that different materials in the longitudinal direction of the busbar are welded together by linear friction welding, surfacing friction welding, rotation friction welding, induction welding, laser welding or electron beam welding, because of good electrical, thermal and mechanical contact.
  • the current busbar according to the invention can preferably be manufactured with pure aluminium, aluminium alloy, copper or copper alloy used as construction material in the parts furthest away from the electrode body and in a distance close to or within the electrode body, with a protective lining of steel for parts within or close to the electrode body.
  • the current busbar according to the invention is preferably either an anode hanger or a cathode steel.
  • the current busbars according to the invention is preferably surface treated with wolfram, for increased life.
  • the embodiment of the current busbar with only the distinguishing feature with the copper rails, can include traditional nipples as the ends or sections that during operation are within the electrode body.
  • an electrode body is provided, distinguished in that it in substance consists of carbon and has adapted grooves for mounting of the current busbars according to the present invention.
  • the conical holes in the electrode body are preferably slightly longer than the conical bodies, such that said conical bodies will fit into said conical holes even after some wearing out.
  • an electrode is provided, distinguished in that it comprises current busbars according to the present invention joined with electrode body according to the present invention.
  • FIGS. 1 a and 1 b illustrate an anode hanger according to the present invention.
  • FIG. 2 illustrates another embodiment of an anode hanger according to the present invention.
  • FIG. 3 illustrates a third embodiment of an anode hanger according to the present invention.
  • FIGS. 1A and 1B illustrate an anode hanger according to the present invention, viewed orthogonal to the conical body 1 , for FIG. 1A , and along the longitudinal axis of the conical body, for FIG. 1B , respectively.
  • the conical body is joined with an electrode body 2 by being slided into a conical groove 3 with form corresponding to the conical body.
  • the largest horizontal cross section dimension for the conical body is within the electrode body, such that the conical body as joined with the electrode body during operation is fastened and kept in place into the electrode body.
  • the conical body is on the upper side fastened into a narrower element, with cross section form as a rectangle with far smaller horizontal dimension than the conical body, such that even though the groove in the electrode body is upwardly open along all or parts of the length of the conical body, said conical body cannot escape from the electrode body during operation.
  • an inner core of copper 4 is provided in the conical body, the rectangle and an above positioned connecting beam. Outside the copper is a steel lining 5 .
  • the upper part of the anode hanger is formed by an aluminium part 6 , joined with the copper by friction welding.
  • copper and aluminium is used in a large extent, which is preferable with respect to thermal and electrical conductivity.
  • the whole anode hanger could be prepared by steel, but out of consideration to thermal and electrical conductivity preferably copper and optionally aluminium are used extensively.
  • thermal and electrical conductivity preferably copper and optionally aluminium are used extensively.
  • heat conduction cooling ribs can be provided in addition to using increased dimension for the different parts of the anode hanger.
  • FIG. 2 illustrates another embodiment of an anode hanger according to the invention, more specifically an anode hanger where a copper rail 7 is arranged to be slided into a correspondingly formed groove in a cylindrical steel body 8 that is to be embedded into the electrode body.
  • the copper rail and the groove are formed with tolerances such that the copper rail relatively easy can be slided into the groove in the steel body at room temperature. By heating during operation in the cell copper will expand more than steel such that a good electrical, thermal and mechanical connection between the copper and the steel is achieved.
  • FIG. 3 where a further embodiment of an anode hanger according to the invention is illustrated, more specifically a steel nipple 9 with groove for sliding in of a copper rail 7 is illustrated. A number of steel nipples can be passed into the copper rail 7 .
  • the cylindrical steel body 8 and steel nipples 9 could be replaced with respect to a conical body of massive steel or with steel lining around a copper core, with grooves for fastening of the copper rail, with the groove either directly into the conical body or above, for example in a connecting beam.
  • the most preferred embodiment of the invention (not illustrated) comprises both a conical body and fastening to the above part of the anode hanger by use of a copper rail, because said embodiment includes all the advantages of the invention.
  • An anode hanger with a conical section embedded into the electrode body illustrates some of the advantages of the invention.
  • the cylinder section has length 1.5 m and consists of a 100 to 140 mm diameter bolt under a small, high rectangle where in total 100 mm vertical rectangle side is embedded into electrode body.
  • the resulting contact area with the electrode body is about 726 500 mm 2 .
  • a standard anode hanger with 4 nipples has a contact area of typical 281 000 mm 2 .
  • the contact area has thereby increased 2.59 times.

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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)
  • Electroplating Methods And Accessories (AREA)
  • Discharge Heating (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
US11/791,423 2004-02-20 2005-02-16 Current busbar Abandoned US20090127126A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20040762A NO321709B1 (no) 2004-02-20 2004-02-20 Stromskinne, elektrodemasse og elektrode
NO20040762 2004-02-20
PCT/NO2005/000056 WO2005080641A1 (en) 2004-02-20 2005-02-16 Current busbar

Publications (1)

Publication Number Publication Date
US20090127126A1 true US20090127126A1 (en) 2009-05-21

Family

ID=34793442

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/791,423 Abandoned US20090127126A1 (en) 2004-02-20 2005-02-16 Current busbar

Country Status (10)

Country Link
US (1) US20090127126A1 (is)
EP (1) EP1853751A1 (is)
AU (1) AU2005215562B2 (is)
CA (1) CA2586786A1 (is)
DE (1) DE112005003212T5 (is)
IS (1) IS8641A (is)
NO (1) NO321709B1 (is)
RU (1) RU2394116C2 (is)
WO (1) WO2005080641A1 (is)
ZA (1) ZA200703577B (is)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120006679A1 (en) * 2010-07-09 2012-01-12 Ellis Timothy W Electrochemical anodes having friction stir welded joints and methods of manufacturing such anodes
US20160251894A1 (en) * 2012-03-13 2016-09-01 View, Inc. Multi-zone ec windows
RU2636545C1 (ru) * 2017-01-09 2017-11-23 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Ошиновка анодная алюминиевого электролизера с обожженными анодами
CN110029363A (zh) * 2019-04-22 2019-07-19 贵州铝城铝业原材料研究发展有限公司 一种分体式独立炭碗、超长填充块结构连续预焙阳极炭块
CN110029362A (zh) * 2019-04-22 2019-07-19 贵州铝城铝业原材料研究发展有限公司 一种分体式填充块连续预焙阳极炭块
US10437126B2 (en) 2008-06-25 2019-10-08 View, Inc. Multi-pane dynamic window and method for making same
US11635666B2 (en) 2012-03-13 2023-04-25 View, Inc Methods of controlling multi-zone tintable windows

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6444471A (en) * 1987-08-11 1989-02-16 Fujitsu Ltd Toner supply mechanism
FR3016897B1 (fr) * 2014-01-27 2017-08-04 Rio Tinto Alcan Int Ltd Ensemble anodique et procede de fabrication associe.
NO341533B1 (no) * 2014-12-30 2017-12-04 Storvik As Anodeåk

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679569A (en) * 1969-10-24 1972-07-25 Alusuisse Welded joint
US4621674A (en) * 1983-01-31 1986-11-11 Swiss Aluminium Ltd. Means of anchorage of anode pins or stubs in a carbon anode
US4659442A (en) * 1983-07-23 1987-04-21 Årdal og Sunndal Verk AS Method of reducing the loss of carbon from anodes when producing aluminum by electrolytic smelting, and an inert anode top for performing the method
US6977031B1 (en) * 1999-08-13 2005-12-20 Sra Technologies Pty Ltd. Anode assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349151A1 (de) * 1973-09-29 1975-04-10 Vaw Ver Aluminium Werke Ag Vorrichtung zum verbinden von stromschienen aus aluminium oder kupfer mit stromleitern aus stahl bei vorzugsweise aluminiumelektrolyseoefen
GB2371055A (en) * 2001-01-15 2002-07-17 Innovation And Technology Alum Anode for electrolysis of aluminium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3679569A (en) * 1969-10-24 1972-07-25 Alusuisse Welded joint
US4621674A (en) * 1983-01-31 1986-11-11 Swiss Aluminium Ltd. Means of anchorage of anode pins or stubs in a carbon anode
US4659442A (en) * 1983-07-23 1987-04-21 Årdal og Sunndal Verk AS Method of reducing the loss of carbon from anodes when producing aluminum by electrolytic smelting, and an inert anode top for performing the method
US6977031B1 (en) * 1999-08-13 2005-12-20 Sra Technologies Pty Ltd. Anode assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10437126B2 (en) 2008-06-25 2019-10-08 View, Inc. Multi-pane dynamic window and method for making same
US8313622B2 (en) * 2010-07-09 2012-11-20 Rsr Technologies, Inc. Electrochemical anodes having friction stir welded joints and methods of manufacturing such anodes
KR101325862B1 (ko) 2010-07-09 2013-11-05 알에스알 테크놀로지스, 인코포레이티드 마찰 교반 용접 조인트를 가지는 전기화학 애노드 및 이러한 애노드 제조 방법
US20120006679A1 (en) * 2010-07-09 2012-01-12 Ellis Timothy W Electrochemical anodes having friction stir welded joints and methods of manufacturing such anodes
US10914118B2 (en) 2012-03-13 2021-02-09 View, Inc. Multi-zone EC windows
US10301871B2 (en) * 2012-03-13 2019-05-28 View, Inc. Multi-zone EC windows
US20160251894A1 (en) * 2012-03-13 2016-09-01 View, Inc. Multi-zone ec windows
US11078721B2 (en) 2012-03-13 2021-08-03 View, Inc. Multi-zone EC windows
US11306532B2 (en) 2012-03-13 2022-04-19 View, Inc. Multi-zone EC windows
US11635666B2 (en) 2012-03-13 2023-04-25 View, Inc Methods of controlling multi-zone tintable windows
US11899330B2 (en) 2012-03-13 2024-02-13 View, Inc. Multi-zone EC windows
RU2636545C1 (ru) * 2017-01-09 2017-11-23 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Ошиновка анодная алюминиевого электролизера с обожженными анодами
CN110029363A (zh) * 2019-04-22 2019-07-19 贵州铝城铝业原材料研究发展有限公司 一种分体式独立炭碗、超长填充块结构连续预焙阳极炭块
CN110029362A (zh) * 2019-04-22 2019-07-19 贵州铝城铝业原材料研究发展有限公司 一种分体式填充块连续预焙阳极炭块

Also Published As

Publication number Publication date
CA2586786A1 (en) 2005-09-01
NO321709B1 (no) 2006-06-26
RU2007121270A (ru) 2008-12-20
NO20040762L (no) 2005-08-22
RU2394116C2 (ru) 2010-07-10
NO20040762D0 (no) 2004-02-20
DE112005003212T5 (de) 2008-04-10
EP1853751A1 (en) 2007-11-14
AU2005215562A1 (en) 2005-09-01
ZA200703577B (en) 2008-08-27
AU2005215562B2 (en) 2010-05-27
WO2005080641A1 (en) 2005-09-01
IS8641A (is) 2007-05-03

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE