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WO1991005889A1 - Agencement de barres bus pour cellules d'electrolyse de l'aluminium - Google Patents

Agencement de barres bus pour cellules d'electrolyse de l'aluminium Download PDF

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Publication number
WO1991005889A1
WO1991005889A1 PCT/CA1990/000351 CA9000351W WO9105889A1 WO 1991005889 A1 WO1991005889 A1 WO 1991005889A1 CA 9000351 W CA9000351 W CA 9000351W WO 9105889 A1 WO9105889 A1 WO 9105889A1
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WO
WIPO (PCT)
Prior art keywords
cell
collector
busbars
current
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.)
Ceased
Application number
PCT/CA1990/000351
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English (en)
Inventor
Richard F. Boivin
Jean-Paul R. Huni
Robert Leblanc
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
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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
Publication of WO1991005889A1 publication Critical patent/WO1991005889A1/fr
Anticipated expiration legal-status Critical
Ceased 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

  • This invention relates to an arrangement of busbars by which current is conveyed from an aluminum electrolytic cell. More particularly, at least in certain aspects, the invention relates to an arrangement of busbars for cells arranged transversely in a row whereby current is conveyed from one cell to the cell next downstream in the row.
  • a typical aluminum electrolytic cell is generally rectangular having longitudinal and transverse axes and comprises a pot containing a molten cryolite-based electrolyte at a temperature of 905°C to 980°C. Dipping into this electrolyte are carbonaceous anodes suspended by anode rods from generally two anode beams extending longitudinally of the cell.
  • the potlining includes a carbonaceous floor which constitutes part of the cathode structure of the cell. Embedded in the carbonaceous floor are steel collector bars which extend transversely, of the cell and are spaced longitudinally along it.
  • Aluminum metal is formed by electrolysis as a molten pool (pad) of metal overlying the cell floor beneath the layer of molten electrolyte, from where it is periodically tapped.
  • Alumina is added to and dissolved in the electrolyte as electrolysis proceeds, and oxides of carbon are removed.
  • These cells are arranged transversely in rows with the electric current being passed from the cathode of an upstream cell to the anode of the cell next downstream.
  • arranged transversely in rows we mean that the cells (which are usually identical) are arranged with their transverse (short) axes parallel to, and indeed normally coincident with, the axis of a row, with each cell having a downstream side (adjacent the next downstream cell in a row) and an upstream side.
  • the collector bars embedded in the floor of a cell extend parallel to the axis of the row and terminate at bar ends, half on the downstream side of the cell and the other half on the upstream side.
  • Busbars and anode risers positioned outside the cell are used to carry the electric current from these collector bar ends to the anode beams of the cell next downstream.
  • busbars and risers are subject to various criteria. One is that they should be positioned so as to minimize the magnetic field induced in the cell, particularly the vertical component thereof.
  • the vertical component of the induced magnetic field interacts with the horizontal component of the electric currents in the molten metal pad giving rise to horizontal forces which can affect different regions of the metal pad in different ways causing metal motion, humping of the metal surface and wave formation.
  • These disturbances make it necessary to maintain a larger anode to cathode distance than would otherwise be desirable, which in ' urn increases the internal resistance of the cell.
  • busbar arrangements have been proposed to overcome them.
  • One type of arrangement involves passing some of the electric current from the upstream collector bars through busbars extending round the ends (i.e. adjacent the short sides) of the cell; and passing the remaining current from the upstream collector bars through busbars extending underneath the cell.
  • busbars extending underneath the cell.
  • U.S. Patent No. 4,474,611 describes a modification of such an arrangement in which asymmetry is introduced into the distribution of current beneath and around the ends of the cells. This is achieved by dividing the upstream collector bars into three groups which are asymmetric with regard to the transverse cell axis, connecting the central (or approximately central) group to busbars passing beneath the cell, and connecting the end groups to busbars passing around the respective ends of the cell (with, in one embodiment, some of the collector bars of one end group being connected to busbars passing around the "wrong" end of the cell to achieve asymmetry) .
  • the advantage of this is stated to be a compensation for the magnetic effects from neighbouring rows of cells.
  • Another object of the present invention is to make it possible to position the cells more closely so that the capital cost of housing cell rows can be minimized while allowing for adequate access between the cells of a row for cell operation, maintenance and repair.
  • a first aspect of the present invention is based in part on the finding that, when the vertical component of the magnetic field acting' on the metal pad has the same sign (plus or minus) over extended areas of the cell, particularly along the longitudinal cell axis, coherent and growing oscillations of the molten metal surface
  • an aluminum electrolysis cell having opposed longitudinal side walls and opposed end walls, a lining for containing cell contents including a molten metal pad, cathode collector bars extending through the lining, and cathode collector bar ends extending fro each of said longitudinal side walls
  • the improvement which comprises at least one generally horizontal current collector busbar extending along each longitudinal side wall and having a horizontal axis at substantially the vertical level of said metal pad, connectors for connecting said cathode collector bar ends to said collector busbars and a plurality of current taps at points spaced along each of said longitudinal side walls for removing current from said collector busbars, said current taps being connected to said collector busbars in such positions that current flows through said .
  • collector busbars in opposite longitudinal directions on opposite longitudinal sides of each of said taps.
  • the effectiveness of the opposed current flow in the cathode collector bar in producing changes of sign in B is significantly enhanced by positioning the anode risers so that the vertical axes thereof substantially coincide (i.e. are substantially aligned in the transverse direction of the cell) with the center line of said current taps.
  • an aluminum electrolysis cell having opposed longitudinal side walls and opposed end walls, a lining for containing cell contents including a molten metal pad, cathode collector bars extending through the lining, cathode collector bar ends extending from said longitudinal side walls, generally horizontal collector busbars extending along said side walls for collecting current from said collector bar ends and additional busbars for removing current from said collector busbars, wherein said additional busbars include vertically disposed current taps for conveying current from said collector busbars vertically downwardly to a vertical level below said metal pad to limit magnetic influences from said additional busbars on said metal pad.
  • Yet other aspects of the invention also have the object of minimizing the effects of busbar currents on vhe vertical magnetic component at the molten pad level, as well as saving inter-cell space (at least in one of these further aspects) .
  • This is achieved, in round-end, under- cell crisscross type of busbar configurations, by substantially cancelling the magnetic effects of long busbar runs parallel to the longitudinal cell axes by positioning runs from one cell having current flowing in one direction in close proximity to runs from an adjacent cell having currents of similar size flowing in the opposite direction.
  • an arrangement of busbars and anode risers between adjacent aluminum electrolysis cells in a row of such cells each cell of the row being generally rectangular with opposed longitudinal side walls and opposed ends and being substantially symmetrical about a central transverse axis, the cells being arranged in said row with the transverse axes thereof substantially in alignment, each cell having upstream and downstream cathode collector bars and at least one anode beam;
  • said arrangement of busbars and anode risers comprising, with respect to the cell halves on one side of the transverse axes: at least two anode risers for each cell half, the anode risers being connected to said at least one anode beam of each cell half at points spaced along said beam so that each cell half has an anode riser closer to the longitudinal end of the cell half and an anode riser closer to the centre of the cell; and at least two busbars connecting the upstream collector bars of an upstream cell half with the anode risers
  • said first busbar including a first elongated horizontal run extending transversely of the row between the respective cell half and an adjacent upstream cell half at a vertical level below said collector bars; said second busbar including a second elongated horizontal run extending transversely of the row between the respective cell half and an adjacent downstream cell half at a vertical level below said collector bars; said first and second elongated horizontal runs of adjacent cells being positioned such that said elongated runs lie in closely spaced generally parallel relationship to each other and being orientated such that the current flows through a first elongated run in a direction opposite to that in which current flows through an adjacent second elongated run.
  • an arrangement of busbars and anode risers between adjacent aluminum electrolysis cells in a row of such cells each cell of the row being generally rectangular with opposed longitudinal side walls and opposed ends and being substantially symmetrical about a central transverse axis, the cells being arranged in said row with the transverse axes thereof substantially alignment, each cell having upstream and downstream cathode collector bars and at least one anode beam;
  • said arrangement of busbars and anode risers comprising, with respect to the cell halves on one side of the transverse axes: at least two anode risers for each cell half, ' the anode risers being connected to said at least one anode beam of each cell half at points spaced along said beam so that each cell half has an anode riser closer to the longitudinal end of the cell half and an anode riser closer to the centre of the cell; and at least two busbars connecting the upstream collector bars of an upstream cell half v/ith the anode
  • Fig. 1 is a plan view of a cell showing an arrangement of cathode collector bar ends, collector busbars and current taps according to a preferred form of a first aspect of the invention
  • Fig. 2 is a cross-section of the cell shown in Fig. 1 taken on the line II-II of the figure;
  • Fig. 3 shows parts of two adjacent cells of the type shown in Figs. 1 and 2 and illustrates the way anode risers convey current from an upstream cell (left cell) to a downstream cell (right cell) ;
  • Fig. 4 shows collector busbars and current taps of the type used in Figs. 1 to 3 and illustrates a preferred form of a further aspect of the invention
  • Fig. 5 is a perspective view of a preferred arrangement of cathode busbars of one cell and the feet of anode risers of an adjacent downsteam cell according to another aspect of the invention
  • Fig. 6 is a perspective view of busbars and anode risers equivalent to Fig. 5 but also showing the busbars of an adjacent downstream cell;
  • Fig. 7 is a perspective view of a folded busbar configuration which can be used for connections on downstream sides of the cell;
  • Fig. 8 is a perspective view showing busbar arrangements between two cells according to a further aspect of the invention
  • Fig. 9 is a plan view of a cell half and part of an adjacent downstream cell half showing a busbar arrangement used in the example.
  • Fig. 10 is a graph indicating a perspective view of the vertical component (B z ) of' the magnetic field at the metal pad of a cell having the busbar configuration of Fig. 9.
  • the vertical component of the magnetic field acting on the cell is referred to as B since the axes of the cell are defined as X for the longitudinal cell axis, Y for the transverse cell axis (and the longitudinal row axis) , and Z for the vertical cell axis.
  • the term "ingoing” is used to describe current travelling from the longitudinal ends of the cell towards the cell centre generally parallel to the X axis (or to busbars carrying such current)
  • the term “outgoing” is used to describe current travelling in the opposite direction (or busbars carrying such current) .
  • higher level is used to describe horizontal busbar runs positioned at about the same vertical level as the metal pad and "lower level” is used to describe horizontal busbar runs positioned at vertical levels below the bottom wall of the cell.
  • Higher level and lower level busbar runs are normally connected by generally vertical busbar runs.
  • the bottom end of an anode riser (referred to as an anode riser foot) extends vertically upwardly from the lower level, although a connection can also be made at the higher level.
  • FIGs. 1 and 2 A preferred embodiment of the first aspect of the present invention is shown in Figs. 1 and 2.
  • the drawings show a cell 10 having upstream cathode collector bars 11 and downstream cathode collector bars 12 having ends extending from the respective sides of the cell.
  • the collector bars 11 and 12 are connected, by means of generally vertical cathode collector bar risers 13, 14 (referred to hereinafter as cathode flexibles) , to collector brsbars 15A, 15B, 15C and 15D on the upstream side of the cell and collector busbars 16A, 16B, 16D and 16D on the downstream side of the cell.
  • the collector busbars 15A-D and 16A-D extend horizontally parallel to the sides of the cell with their longitudinal axes (mid vertical height) positioned approximately at the vertical level of the metal pad 17 (i.e. at the higher level, namely vertically between the upper and lower surfaces of the metal pad 17) .
  • each collector busbar has a pair of such taps (i.e. collector busbar 15A has a pair of taps 18A, etc) .
  • the tap pairs are centred at the half-cell quarter points (ie. 1/4, 31/4 where 1 is the length of the half cell) . Paired taps are used in preference to single taps because they result in greater convenience, better current distribution and improved space-saving.
  • the result of placing the collector busbars 15A-D, 16A-D as shown and tapping their current at the points described is to generate within the metal pad 17 a vertical field component whose sign alternates ' as indicated by the "+" and "-" signs shown in Fig. 1. This is because the direction of the current flowing in any one collector busbar is ingoing on one side of the tap point and outgoing on the opposite side of the tap point.
  • the effectiveness of this reversal is enhanced by positioning the anode risers 25A, B, C, D (see Figs. 3, 5 and 6) such that their vertical axes substantially coincide with the centerlines of the current taps 18A, B, C, D.
  • each collector busbar is connected to ten cathode collector bars. Changes could be made to the number of collector busbars and to the number of cathode collector. bars connected to each collector busbar because these variables, in themselves, do not necessarily dictate the number of sign reversals in B z along the cell. The latter is determined by the number of taps and current paths from the cathode collector bars 11, 12 to the taps. There should preferably be more than two taps per cell side in order to produce sufficient sign changes to prevent instabilities-of the metal surface from developing.
  • each collector busbar 15A-15D and 16A-16D there may be fewer, each being provided with multiple taps since current will flow from the collector bars to the closest tap and thus the desired current reversal along the cell sides will still be achieved. Indeed, there need only be one collector busbar running from cell end to cell end along each side of the cell with four taps or pairs of taps spaced along each cell side.
  • the installation problem can be overcome by assembling each collector busbar from two halves which are field welded and the thermal expansion/contraction problem can also be overcome by providing a central flexible section.
  • the provision of one or more horizontal collector busbars 15, 16 along each side of the cell at the higher level has the additional advantage that the collector busbars are ideally positioned to act as supports for an inter-cell working floor 20 (known as a grating) . This eliminates the need for costly independent supports for such a working floor.
  • the paired current taps 18A-18D on the upstream side of the cell convey the current substantially vertically downwardly by virtue of the fact that they are connected to the bottom faces of the collector busbars 15A-15D and are orientated vertically.
  • the upper ends of the taps could, however, be attached to either one of the vertical faces of the collector busbars, if desired, although this arrangement would be less economical of inter-cell space.
  • the current is conveyed in this way beneath the level of the metal pad and preferably below the bottom of the cell, i.e. to the lower level.
  • anode risers 25 of the cell next downstream by subsequent busbar runs There are normally as many anode risers 25 as vertical taps 18A, etc. and the anode risers are usually aligned approximately with those taps, i.e. they are spaced at usually regular intervals between the adjacent cells in the X direction. By aligning the anode risers (particularly their horizontal parts - see Fig. 3) with the taps, the magnetic effects of the anode risers strengthen the desirable magnetic effects of the collector busbars 15, 16.
  • the anode risers 25 normally have "positive” and “negative” runs, the positive risers being connected to the cathode busbars issuing from the upstream side of the upstream cell, and the negative riser being connected to cathode busbars issuing from the downstream side of the upstream cell. This is necessary in order to push the equipotential as far back as possible from • the upstream cell, so as to decrease the difference in path length from the collector busbars on the two sides of the cell to the cell next downstream.
  • Use is also made of a round-end, under-cell arrangement of the busbars whereby current from a central group of upstream collector bars is conveyed around the ends of the cell whereas current from an endmost group of collector bars is conveyed under the cell.
  • the combination of the crisscross arrangement with the round-end, under-cell busbar paths has the advantage that there is less discrepancy in length between the paths followed by the upstream busbars, so there need be less discrepancy! between the cross-sections of the busbars and these cross-sections can be made smaller for a given voltage drop.
  • the round-end, under-cell arrangement can also be used to optimize cell magnetics by suitably positioning various busbar runs.
  • the under-cell busbar runs can be positioned to reduce the spread of B z at the cell ends by introducing additional zero points (crossings) in B z .
  • the round end current may require a single busbar run whereas the undercell current may require several parallel runs, each positioned so as to modify B z locally in the appropriate manner.
  • a substantial part of the current which goes under the cell should advantageously be taken across near the ends of the cell, i.e. beyond the cell's quarter point or three quarter point (depending on which cell half is being considered) .
  • neutralizing the detrimental effects of the anode risers on B z at the cell ends requires some of the round-end current to be passed along the cell ends at the upper level.
  • the upstream collector bar runs are also positioned so as to minimize the effects on B z of longitudinal (inward and outward) runs. This is explained with reference to a preferred embodiment shown in Figs. 5 and 6.
  • Fig. 5 is a perspective view of the busbars of a single cell (the cell itself not being shown for simplicity) and the feet of the anode risers for an adjacent downstream cell.
  • Fig. 6 is a perspective view similar to Fig. 5 but additionally showing the busbars of the downstream cell.
  • the cathode collector bars on the upstream side of the cell are arranged in four groups by virtue of their connection to collector busbars 15A, 15B, 15C and 15D and the current is tapped vertically downwardly from these collector busbars by (in this case) single vertical taps 18A, 18B, 18C and 18D.
  • the feet of four anode risers 25A, 25B, 25C and 25D are provided between the adjacent upstream and downstream cells and the upper ends of these anode risers are connected to the anode beams (not shown - but see anode beams 46 of Fig. 3 for comparison) of the cell next downstream at corresponding longitudinal spaced positions along the anode beam.
  • This arrangement means that there are two innermost groups of upstream collector bars (those connected to collector busbars 15B and 15C) , two outermost groups of collector bars (those connected to collector busbars 15A and 15D) , two innermost anode risers 25B and 25C and two outermost anode risers 25A and 25D.
  • Collector busbar 15B (connected to the innermost group of collector bars) is connected to the foot of the outermost anode riser 25A, and the collector busbar 15A (connected to the outermost group of collector bars) is connected to the foot of the innermost anode riser 25B in the desired crisscross arrangement mentioned above.
  • the current from collector busbar 15B is conveyed to the lower level by vertical tap 18B, transversely (Y direction) preferably to approximately the central longitudinal plane between the cell in question and the cell next upstream (not shown) by short transverse busbar run 26B, outwardly along the inter-cell mid plane by busbar run 27B to a point a short distance beyond the longitudinal end of the cell, transversely for part of the width of the cell by horizontal busbar run 28B, vertically to the upper level by busbar run 29B, transversely at the upper level preferably to approximately the inter-cell mid plane between the cell in question and the cell next downstream by busbar run 3OB, and inwardly to the foot of anode riser 25A by busbar run 3IB.
  • collector busbar 15A (connected to the outermost group of collector bars) is conveyed downwardly to the lower level by vertical tap 18A, outwardly by busbar run 26A, transversely beneath the cell by a pair of busbar runs 27A and 28A, which are connected in parallel, spaced slightly apart and take somewhat different paths as shown, and then inwardly by busbar run 29A to the foot of innermost anode riser 25B preferably approximately along the inter-cell mid plane between the cell in question and the cell next downstream.
  • the inward busbar run 29A of the upstream cell connected the innermost anode riser 25B extends very close and parallel to busbar run 27B 1 of the downstream cell conveying current at the lower level from the innermost collector busbar 15B', and moreover these busbar runs 29A and 27B' are of virtually the same length. Since these busbar runs carry current in opposite directions (outwardly for busbar run 27B 1 and inwardly for busbar run 29A) at the same vertical level, the induced magnetic effects caused by these two long horizontal runs are virtually cancelled out so do not adversely affect B z at the level of the metal pad. Minimizing the magnetic effects of the inward and outward busbar runs maximizes the desirable magnetic effects of the collector busbars 15, 16. For the optimum cancelling effect, the two busbar runs should be as close as practically possible, given electrical and mechanical constraints, as similar in length as possible and carry as similar a current as possible (although differences of up to 10% do not have too much of an effect) .
  • the collector bars may of course be arranged in more than two groups per half cell, but cancellation of the magnetic influences of the longitudinal busbar runs becomes more difficult to achieve as their number, which is dictated by the number of collector bar groups, increases beyond two, and current routing generally becomes more of a problem.
  • the number of anode risers is governed by the number of anodes and practical concerns such as the clearance required for the operators to have sufficient access to the anodes. Although the anode risers are normally evenly spaced from each other, this is by no means essential.
  • the downstream busbars generally have a significant minimum length which can clutter the inter-cell space.
  • This disadvantage can be overcome by arranging the downstream busbars in a vertically folded configuration, e.g. as shown in Fig. 7. By arranging the busbar runs vertically, the occupied space between the feet of the anode risers is kept to a minimum. Moreover, the vertically folded condition cancels the magnetic field generated by the busbars and thus minimizes the effect on B z at the level of the metal pad.
  • the figure shows the connection between collector busbar 16A anode riser 15A. This consists of vertical tap 19A, and vertical runs 36A, 38A and 40A interconnected alternately at the top or bottom by connecting pieces 35A, 37A and 39A. This arrangement gives four vertical interconnected runs, but more or less can be provided to achieve the desired result.
  • FIG. 8 shows two adjacent cell halves (indicated in dotted lines) and the connections between the upstream collector busbars 15A, 15B of the cell half and the feet of the anode risers 25A, 25B of the downstream cell.
  • the connections are essentially the same as in Figs. 5 and 6 except that current is conveyed to the outermost end of the outermost collector busbar 15A before being led vertically downwardly to the lower level.
  • Fig. 9 Two cells having busbar designs generally as shown in Fig. 9 were constructed and operated. The cells had a distance of 6.5 m between cell centre lines. The total cell current was 310 kA, with 20 collector bars (not all of which are shown in Fig. 9) and 8 prebaked anodes (not shown) per cell quarter for a total of 80 collector bars and 32 anodes. There were four equally loaded, sloped anode riser groups along the full length of the cell, each group consisting of one "positive" riser (25A, 25B) connected to cathode busbars issuing from the upstream side of the upstream cell, and one "negative" riser connected to cathode busbars issuing from the downstream side of the upstream cell (25AA, 25BB) . Each positive anode riser and each negative anode riser carried the current from ten collector bars of the upstream cell.
  • Fig. 9 shows the distribution of B ⁇ within the cell at the level of the metal pad.
  • the sign reversal in the longitudinal direction of the cell can clearly be seen and, even at the upstream corners of the cell, the intensity of B ⁇ does not exceed 40G at any point within the "anode shadow" (i.e. directly beneath the anode) .
  • the resulting cell is devoid of substantial metal pad instabilities.
  • the various aspects of the invention allow electrolytic cells to be operated more efficiently and with decreased capital investment costs.

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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)

Abstract

L'invention se rapporte à des agencements de barres bus pour cellules d'électrolyse de l'aluminium. Dans un premier aspect de la présente invention, au moins une barre bus collectrice généralement horizontale (15A-15D,16A-16D) est placée sur chacun des côtés de la cellule et un certain nombre de points de prise de courant (18A-18D,19A-19D) sont prévus le long de chaque barre bus collectrices, de sorte que le courant s'écoule le long de la barre bus collectrice dans des directions opposées sur chacun des côtés des prises. On obtient ainsi des changements de signes dans la composante verticale du champ magnétique agissant sur la pastille d'aluminium dans le sens longitudinal, ce qui contribue à empêcher les instabilités de la pastille. Dans un second aspect, les prises de courant pour les barres bus collectrices (18A-18D,19A-19D) sont disposées verticalement, de façon à transporter le courant bien au-dessous du niveau de la pastille métallique (17), de façon à réduire au minimum les effets magnétiques néfastes causés par une distribution ultérieure du courant. Dans un troisième aspect, lorsque les cellules sont disposées en une rangée, le courant est transporté entre les cellules selon des entrecroisements sous-cellules aux extrémités arrondies, tandis que les longues branches horizontales (29A, 27B') des barres bus de cellules adjacentes sont placées proche les unes des autres, les courants s'écoulant dans des directions opposées pour contrer les effets magnétiques néfastes.
PCT/CA1990/000351 1989-10-13 1990-10-12 Agencement de barres bus pour cellules d'electrolyse de l'aluminium Ceased WO1991005889A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,000,647 1989-10-13
CA 2000647 CA2000647A1 (fr) 1989-10-13 1989-10-13 Disposition des barres collectrices des cellules electrolytiques de production d'aluminium

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Publication Number Publication Date
WO1991005889A1 true WO1991005889A1 (fr) 1991-05-02

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CN (1) CN1051766A (fr)
AU (1) AU6512690A (fr)
CA (1) CA2000647A1 (fr)
WO (1) WO1991005889A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
GB2549731A (en) * 2016-04-26 2017-11-01 Dubai Aluminium Pjsc Busbar system for electrolytic cells arranged side by side in series

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CN100383287C (zh) * 2002-03-25 2008-04-23 株洲冶炼厂有色冶金设计研究院 一种可拆卸安装式锌电解槽边母线机构
CN101748443B (zh) * 2008-12-09 2012-05-23 贵阳铝镁设计研究院有限公司 端头两点进电模式的铝电解槽阴极母线的配置方法及结构
CN111102835B (zh) * 2019-12-24 2022-12-27 力玄科技(上海)有限公司 多边形电磁等离子熔融反应器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617454A (en) * 1969-11-12 1971-11-02 Arthur F Johnson Bus structure from aluminum reduction cells
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
GB2021647A (en) * 1978-05-29 1979-12-05 Pechiney Aluminium Device for reducing magnetic disturbances in series of very high intensity electrolysis
EP0185822A1 (fr) * 1984-12-28 1986-07-02 Alcan International Limited Agencement de barres omnibus pour cellules électrolytiques de production d'aluminium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617454A (en) * 1969-11-12 1971-11-02 Arthur F Johnson Bus structure from aluminum reduction cells
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
GB2021647A (en) * 1978-05-29 1979-12-05 Pechiney Aluminium Device for reducing magnetic disturbances in series of very high intensity electrolysis
EP0185822A1 (fr) * 1984-12-28 1986-07-02 Alcan International Limited Agencement de barres omnibus pour cellules électrolytiques de production d'aluminium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2549731A (en) * 2016-04-26 2017-11-01 Dubai Aluminium Pjsc Busbar system for electrolytic cells arranged side by side in series

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CN1051766A (zh) 1991-05-29
AU6512690A (en) 1991-05-16
CA2000647A1 (fr) 1991-04-13

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