WO2017163162A1 - Connecteur électrique souple destiné à une cellule électrolytique - Google Patents

Connecteur électrique souple destiné à une cellule électrolytique Download PDF

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Publication number
WO2017163162A1
WO2017163162A1 PCT/IB2017/051591 IB2017051591W WO2017163162A1 WO 2017163162 A1 WO2017163162 A1 WO 2017163162A1 IB 2017051591 W IB2017051591 W IB 2017051591W WO 2017163162 A1 WO2017163162 A1 WO 2017163162A1
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WO
WIPO (PCT)
Prior art keywords
cathode
connector
cathodic
mechanical fixation
electrolytic cell
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/IB2017/051591
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English (en)
Inventor
Abdalla ALZAROONI
Alexander Arkhipov
Amal ALJASMI
Lalit MISHRA
Syed Fiaz AHMED
Sergey AKHMETOV
Ibrahim BAGGASH
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.)
Dubai Aluminium PJSC
Original Assignee
Dubai Aluminium PJSC
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 Dubai Aluminium PJSC filed Critical Dubai Aluminium PJSC
Publication of WO2017163162A1 publication Critical patent/WO2017163162A1/fr
Anticipated expiration legal-status Critical
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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
    • 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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes

Definitions

  • the invention relates to the field of large-scale electrolytic cells, such as electrolytic cells used for the Hall-Heroult process for making aluminium, and in particular to the electrical connection between the cathode blocks and the cathodic busbar. More precisely, it relates to flexible electrical connectors used to connect the cathode collector bar to the cathodic busbar.
  • the Hall-Heroult process is the only continuous industrial process for producing metallic aluminium from aluminium oxide.
  • Aluminium oxide Al 2 0 3
  • molten cryolite Na 3 AIF 6
  • the resulting mixture typically at a temperature comprised between 940 °C and 970 °C acts as a liquid electrolyte in an electrolytic cell.
  • An electrolytic cell used for the Hall-Heroult process typically comprises a steel shell (so-called pot shell), a lining (comprising refractory bricks protecting said steel shell against heat, and cathode blocks usually made from graphite, anthracite or a mixture of both), a superstructure and a plurality of anodes (usually made from carbon) that plunge into the liquid electrolyte.
  • Anodes and cathodes are connected to external aluminium busbars.
  • An electrical current is passed through the cell (typically at a voltage between 3.7 V and 5 V) which electrochemically reduces the aluminium oxide, split in the electrolyte into aluminium and oxygen ions, into aluminium at the cathode and oxygen at the anode; said oxygen reacting with the carbon of the anode to form carbon dioxyde.
  • the resulting metallic aluminium is not miscible with the liquid electrolyte, has a higher density than the liquid electrolyte and will thus accumulate as a liquid metal pad on the cathode surface from where it needs to be removed from time to time, usually by suction into a crucible.
  • the general outline of these cells is known to a person skilled in the art and will not be repeated here in detail. They have a length usually comprised between 8 and 25 meters and a width usually comprised between 3 and 5 meters.
  • the cells also called “pots”
  • the cells are always operated in series of several tens (up to more than four hundred) of pots (such a series being also called a “potline”); within each series DC currents flow from one cell to the neighbouring cell.
  • the cells are arranged in a building, with the cells arranged in rows either side-by-side, that is to say that the long side of each cell is perpendicular to the axis of the series, or end-to-end, that is to say that the long side of each cell is parallel to the axis of the series.
  • the current is fed into the anodic busbar, flows from the anode beam to the anode rod and to the anode in contact with the liquid electrolyte, crosses the liquid metal pad and eventually is collected at the cathode block.
  • the cathode block is provided with a collector bar, usually made of steel, which is connected to the cathodic busbar through flexible conducting members. Each such conductive member extends between the cathode collector bar and the cathodic busbar; it is connected to the cathodic busbar and to the cathode collector bar using connecting members.
  • anodic risers which "rise” the current from the cathodic busbar (usually located beneath the floor level of the main working area of the pot-room building) up to the anode beam (located above the pot, as a part of the superstructure).
  • the present invention is more particularly related to these flexible connecting members connecting the cathode collector bars to the cathodic busbar, to their structure and to the way they may be mounted on the cathode collector bar and on the cathodic busbar.
  • Mechanical flexibility is required for these connection members for practical reasons: it facilitates their handling and mounting, and avoids mechanical tension due to thermal expansion.
  • the connection of the cathodic collector bar to the cathodic busbar should be of excellent electrical quality and reliability. In particular, it should not lead to a significant voltage drop, it should not be subject to corrosion, and more generally it should not degrade over time. As a rule, ohmic losses must be minimized; during the past decades, much effort has been dedicated to the decrease of ohmic losses in Hall- Heroult electrolysis cells.
  • the flexible packs of aluminium sheets are welded to the aluminium side (so- called aluminium stub) of an aluminium-steel transition joint (so-called clad); this operation can be carried out in a workshop rather than on-site.
  • the steel side (so-called steel stub) of the aluminium-steel transition joint is then welded to the end of the steel cathode collector bar.
  • the disadvantage of this solution is that in case of cathode replacement the welding between the steel cathode collector bar and the transition joint has to be cut on-site to remove the old pot and has to be welded on-site on the new pot.
  • WO 2012/161594 discloses a flexible bimetallic Al-Cu connector for connection to the cathode collector bar, said bimetallic connector being manufactured by friction stir welding.
  • the present invention aims at simplifying the design and use of connectors used to connect a cathode block to the cathodic busbar, and to render the connections more reliable. Another goal of the invention is to simplify the mounting and dismounting of these connectors and decrease the downtime of pots. Yet another goal is to save time during pot maintenance and exchange.
  • a flexible electrical connector between the cathode collector bar and the cathodic busbar that has two ends, one preferably made from steel (which is welded onto the cathode collector bar which is usually made from steel), the other being a first interface that is mechanically fixed to the cathodic busbar, or to a second interface welded to the cathodic busbar.
  • a first object of the invention is a flexible electrical connector for connecting one end of a cathode collector bar to a cathodic busbar of an electrolytic cell, suitable for the Hall- Heroult electrolysis process, said connector comprising a flexible elongated body comprising aluminium sheets or strips, means for attaching a first end of said body to a respective end of said cathode collector bar, means for attaching a second end of said body to said bus bar,
  • said electrical connection member is permanently attached to said second end of the body by welding: this gives a good and reliable electrical contact. It is also provided with further first through bore for insertion of bolting means.
  • said mechanical fixation member defines a first free face adapted to contact a second free face defined by said bus bar or by a complementary mechanical fixation member attached to said cathodic bus bar.
  • said mechanical fixation member is adapted to be fixed on said cathodic busbar by bolting. It can be provided with first through bore for insertion of bolting means.
  • Said electrical connection member and mechanical fixation member can be one single member or two different members.
  • Said mechanical fixation member can be a first contact tab that is permanently attached, in particular by welding, to electrical connection member.
  • Said first contact tab can be made of a second electrically conductive material, in particular copper.
  • the lower face of said electrical connection member can be attached both to said body and said first contact tab.
  • said means for attaching said first end of said body to a respective end of said cathode block comprises an aluminium pad welded to said body, and a steel pad welded to said aluminium pad.
  • Another object of the present invention is a cathode block intended to be used in an electrolytic cell suitable for the Hall-Heroult process, said cathode block comprising an elongated body and at least one metallic cathode collector bar protruding out of each of the two ends of said elongated body, characterized in that at least one end and, preferably, both ends of this elongated body being provided with a connector according to the invention.
  • said end of said cathode collector bar is connected to said connector by a steel-to-steel welding.
  • Another object of the invention is an electrolytic cell suitable for the Hall-Heroult electrolysis process, comprising
  • a cathode forming the bottom of said electrolytic cell and comprising a plurality of parallel cathode blocks, each cathode block comprising at least one metallic cathode collector bar protruding out of each of the two ends of the cathode, a lateral lining defining together with the cathode a volume containing the liquid electrolyte and the liquid metal resulting from the Hall-Heroult electrolysis process, an outer metallic potshell containing said cathode and lateral lining,
  • each anode assembly comprising at least one anode and at least one metallic anode rod connected to an anode beam
  • a cathode bus bar comprising a cathodic bus bar surrounding said potshell, a plurality of connectors, each connecting one end of a cathode collector bar of a cathode block to said cathodic bus bar,
  • At least one of said connectors is a connector according to the invention
  • said cell further comprises means for removable fixation of mechanical fixation member on said cathodic bus bar or on a complementary mechanical fixation member attached to said cathodic busbar.
  • said mechanical fixation member of said connector directly contacts a face of said cathodic bus bar, in particular a top face thereof, or it contacts a complementary mechanical fixation member, which is attached, in particular in a permanent way, to said cathodic busbar.
  • Said complementary mechanical fixation member can also be attached to an intermediate member, which is attached to said cathodic busbar.
  • Said complementary mechanical fixation member can be a second contact tab which contacts said first contact tab of said connector, said second contact tab being made of a second electrically conductive material, in particular copper.
  • Said means for removable fixation can comprise a bolt inserted into said first through bore provided into said first mechanical fixation member as well as into a second bore provided into on said bus bar or into said complementary mechanical fixation.
  • Another object of the invention is an aluminium electrolysis plant comprising at least one line of electrolysis cells of substantially rectangular shape, and said plant further comprising means for electrically connecting said cells in series and for connecting the cathodic busbar of a cell to the anode beam of a downstream cell,
  • Another object of the invention is a method for making aluminium by the Hall-Heroult electrolysis process, characterized in that said method is carried out in an aluminium electrolysis plant according to the invention.
  • Still another object of the invention is a process for relining an electrolytic cell according to the invention comprising flexible electrical connectors according to the invention, said process comprising the following steps:
  • Said flexible electrical connectors according to the invention can be recovered from said spent cathode blocks by cutting through said means for attaching a first end of said body of said connector to said end of said cathode collector bar.
  • Said means for attaching is preferably a steel-steel welding joint. Cutting is preferably done before relining the pot with new cathode blocks.
  • FIGS 1 to 7 represent embodiments of the present invention.
  • Figure 1 is a schematic view, showing from above the global arrangement of an electrolytic cell according to the invention.
  • Figure 2 is a side view, showing at a greater scale a connector which extends between a cathode block and a cathodic busbar of the cell of figure 1 , at an intermediate stage of the mounting of this connector.
  • Figure 3 is a side view, analogous to figure 2, showing the connector of figure 2 in the mounted stage.
  • Figures 4 to 7 are side views, analogous to figure 3, showing four other embodiments of the connector according to the invention, in the mounted stage.
  • An aluminium smelter comprises a plurality of electrolytic cells arranged the one next to the other (generally side by side), typically along two parallel lines. These cells are electrically connected in series by means of conductors, so that electrolysis current passes from one cell to the next.
  • the number of cells in a series is typically comprised between 50 and over 400, but this figure is not substantial for the present invention.
  • the cells are arranged transversally in reference of main direction of the line they constitute. In other words the main dimension, or length, of each cell is substantially orthogonal to the main direction of a respective line, i.e. the circulation direction of current.
  • a Hall-Heroult electrolytic cell first comprises a cathode forming the bottom of said electrolytic cell and comprising a plurality of parallel cathode blocks, each cathode block being provided with at least one current collector bar and two electrical connection ends.
  • a lateral lining defines together with the cathode a volume containing the liquid electrolyte and the liquid metal resulting from the Hall-Heroult electrolysis process, said cathode and lateral lining being contained in an outer metallic potshell.
  • Said electrolytic cell further comprises a plurality of anode assemblies suspended above the cathode, each anode assembly comprising at least one anode and one metallic anode rod connected to an anodic busbar called anode beam.
  • FIG. 1 On Figure 1 , the outer periphery of potshell 1 , some cathode blocks 11 (which form the bottom of the pot), each of which has one or more cathode collector bars protruding from each of its ends) are schematically shown, the other above mentioned components of the cell being not illustrated.
  • Reference numbers 3, 4 refer to the protruding ends of a cathode collector bar 2 on two opposite ends of the cathode block 2 ; they protrude out the cathode block 11 and cross the potshell 1.
  • Figure 1 also shows a cathodic bus bar 5, forming part of a whole cathode bus bar. This cathodic bus bar 5 surrounds said potshell 1 , is rectangular in shape and has two opposite longitudinal parts 6, 7, as well as two opposite transversal parts 8, 9.
  • connectors 10 are provided, each connector extending between the protruding end 3 or 4 of the cathode collector bar of a respective cathode block 11 and either longitudinal part 6 or 7 of cathodic busbar 5. These connectors 10 are part of the subject matter of the invention and will be described in more detail.
  • FIGS 2 and 3 illustrate a first embodiment of the invention.
  • the connector 10 illustrated on Figure 2 and Figure 3 extends between the end 4 of steel cathode collector bar 11 and the longitudinal part 7 of cathodic bus bar 5.
  • This connector 10 comprises a body 12 made of a pack of flexible aluminium sheets or strips, which is linked to the end 4 via two intermediate junction pads 14 and 16, respectively made of steel and aluminium.
  • Steel junction pad 14 is attached to end 4 by a steel/steel welding seam 15.
  • Aluminium junction pad 16 is attached to first end 12' of body 12 by a respective aluminium/aluminium welding seam 17.
  • transition joint in which facing parts of the pads 14 and 16 are attached by a steel/aluminium welding seam 18 ; such transition joints (or dads) are commercially available and can be manufactured for example by co-rolling or explosion welding.
  • the above mentioned constitutive elements 12 to 18 of connector 10, as well as the way of attaching one to the other, are known as such. Therefore, they will not be described more in detail in the present description. It should be noted that on Figures 2, 3, 4 and 5, transition joints are indicated by a wavy line (for example reference number 18 on Figures 2 and 3 and reference numbers 25 and 35 on Figure 2), but these embodiments do not limit the scope of the present invention.
  • a titanium layer is provided between steel pad 14 and the aluminium pad 16, forming a steel-titanium-aluminium tri-metallic transition joint.
  • Said titanium layer may have a thickness between 0.2 mm and 2 mm, for example, preferably between 0.5 mm and 1.0 mm.
  • the presence of the titanium layer between the steel pad and the aluminium pad stabilizes the interface, knowing that the operating temperature of this transition joint is typically of the order of 400°C to 500°C, for a typical duration of 5 to 7 years.
  • Such tri- metallic transition joints are generally manufactured by explosion welding.
  • Tri-metallic transition joints manufactured by co-rolling are generally using chromium instead of titanium.
  • the connector 10 can be separated from the steel cathode collector bar by cutting through the steel-steel welding seam 18.
  • This connector 10 further comprises a first mechanical and electrical interface 20, which comprises a base plate 22 made of aluminium, as well a tab 24 made of a different material, such as copper.
  • Base plate 22 forms an electrical connection member
  • tab 24 forms a mechanical connection member.
  • electrical connection member and mechanical connection member are formed by two different members.
  • base plate 22 is attached to opposite end 12" of body 12 in a permanent way, preferably by a respective aluminium/aluminium welding seam 23, of known type. Moreover, adjacent faces of base plate and tab are attached by a copper/aluminium welding seam 25, of the clad or explosion type.
  • This first mechanical and electrical interface 20 interacts with a second mechanical and electrical interface 30, which comprises a base plate 32 made of aluminium, as well a tab 34 made of a different electrically conductive material, such as copper.
  • a second mechanical and electrical interface 30 comprises a base plate 32 made of aluminium, as well a tab 34 made of a different electrically conductive material, such as copper.
  • the materials of both tabs 24 and 34 are identical.
  • the edge of base plate 32 is attached to longitudinal part 7 of cathodic bus bar 5 by a respective aluminium/aluminium welding seam 33, of known type.
  • adjacent faces of base plate 32 and tab 34 are attached by a copper/aluminium welding seam 35, which can be manufactured, as mentioned above, by explosion welding or co-rolling.
  • said first interface 20 and/or said second interface 30 is formed by an aluminium - titanium - copper trimetallic clad, which is generally manufactured by explosion welding; the titanium thickness can be between 0.2 and 2 mm, preferably between 0.3 to 1.5 mm. This further improves the lifetime of the clad.
  • Trimetallic dads obtained by co-rolling are generally using chromium instead of titanium.
  • both base plates 22, 32 and both tabs 24, 34 are provided with through bores 22', 32', 24' and 34', adapted to receive removable fixation means, such as a bolt 40. Therefore, once the two mechanical interfaces 20, 30 are placed one above the other, with their bores in mutual communication, bolt 40 can be inserted through said bores in view of mechanical fixation and electrical connection of both interfaces. Adjacent free faces 24", 34" of tabs 24, 34 define a contact zone 50. Due to the nature of the material of these tabs, a satisfactory mechanical contact is obtained between both interfaces 20 and 30. Moreover, providing a mechanical copper-copper contact induces specific advantages compared to mechanical copper-aluminium or aluminium-aluminium contacts. In particular, coper-copper contacts have high durability and reliability.
  • an electrically conductive material other than copper may be used for at least one tab 24, 34. It is preferred that both tabs are made of the same material, and that this material is copper.
  • Tab 124 may be made of copper.
  • the welding joint between base plate 122 and tab 124 advantageously is a transition joint, of the type as explained above.
  • tab 124 may be made of aluminium.
  • the mechanical contact at the cathodic busbar 107 side is aluminium to aluminium.
  • the first electrical and mechanical interface does not comprise a tab, such as that represented by reference number 24 on Figure 3. Therefore, the mechanical contact occurs directly between tab 234 and base plate 222.
  • electrical connection member and mechanical connection member of the connector 210 are formed by one single member 222.
  • Tab 234 may be made of copper (and in this case the welding joint between base plate 232 and tab 224 advantageously is a transition joint, of the type as explained above).
  • tab 234 may be made of aluminium.
  • the mechanical contact at the cathode bus bar 207 side is aluminium to aluminium.
  • both electrical and mechanical interfaces do not comprise a tab, such as those represented by reference numbers 24 and 34 on Figure 3.
  • electrical connection member and mechanical connection member of the connector 310 are formed by one single member 322. The mechanical contact occurs directly between base plates 322 and 334.
  • the mechanical contact at the cathodic bus bar 307 side is aluminium to aluminium.
  • base plate 422 of the connector 410 is mechanically fixed (preferably bolted) directly on the top face 407' of the cathodic bus bar 407.
  • electrical connection member and mechanical connection member of the connector 410 are formed by one single member 422.
  • the removable fixation of member 422 on bus bar 407 is ensured by a bolt which penetrates into a blind hole 407" provided into top face 407' of bus bar.
  • the embodiment of this Figure 7 induces specific advantages. It saves manufacturing cost and is very simple to carry out. It brings the bolted connection to a location where temperature is lower, making it more reliable. However, it requires in general a longer aluminium body 12 and therefore leads to a higher voltage drop.
  • the electrolytic cell according to the invention may be mounted according to the following steps.
  • the flexible electrical connector 10 according to the invention can be supplied as a single piece comprising the body 12, the first interface 20, and the junction pads 14, 16 comprising the aluminium - steel transition joint 18.
  • Mounting of the flexible electrical connector 10 on the cathode block 11 is carried out in a first location, typically in the cathode relining workshop.
  • the cathode block 11 is first mounted into a potshell 1 to form part of the cathode of a pot.
  • the flexible electrical connector 10 is then mounted. This operation comprises attaching the steel junction pad 14 to the protruding end 4 of the cathode collector bar 2; this is done by welding under good working environment in a dedicated workshop, which ensures that the best possible electrical connection is achieved.
  • the fully mounted pot, including the flexible electrical connectors 10 according to the invention is supplied to the pot-room and installed at its dedicated location. Contrary to certain prior art embodiments, no time is lost with welding operations in the potroom to link the flexible to the cathode collector bar.
  • second interface member 30 is attached to the longitudinal part 7 of cathodic busbar 5 in particular by welding. This is done on-site, during the construction of the potline before energizing the cathodic busbar, in the absence of magnetic fields. Due to the bolted connection, according to the invention, any replacement or disconnection of the flexible electrical connector 10 from the cathodic bus bar 5 does not require welding.
  • first 20 and second 30 interface members 2 are attached together, in particular using bolt 40. This operation is carried on- site in the potroom.
  • the invention has several advantages over prior art.
  • the interface member is permanently attached to the aluminium flexible strips or sheets of the connector 10, the latter may be handled with a high reliability, from its manufacturing site to the potshell.
  • the connector since the connector may be removably fixed to the cathodic busbar, it allows very simple mounting and dismounting process.
  • One of the advantages of the connector and method according to the present invention is that the bolted connection is at the cathodic busbar where the temperature is moderate rather than at the end of the cathode collector bar, where the temperature is much higher. This improves the electrical and mechanical stability of the bolted contact.
  • Another advantage is that the bolting takes place at a location, i.e. at the cathodic busbar, where access is easier and less dangerous, that is to say at a distance from the hot pot shell, and in a position where bolting can take place from above.
  • the mounting and demounting process according to the invention allows saving time: it allows to reduce the pot downtime by one full day compared to prior art solution involving steel-to-steel welding in the potroom. This is to say that the pot can be started one day earlier, during which it will produce about three tons of aluminium (at 400 kA).
  • the process according to the invention also avoids unpleasant working conditions for welders.
  • Yet another advantage is that the electrical connection established by the flexible electrical connector and method according to the invention is very reliable.
  • connection to the protruding end of the cathode collector bar is done by steel to steel welding in the dedicated relining workshop, the resulting weld gives good and reliable results.
  • the connection to the cathode bus bar is done by a mechanical means such as bolting. Bolted connections can be inspected, tested and retightened if necessary, even when the pot is operation.
  • a criterion for reliability is the voltage drop due to the connection element, i.e. the voltage drop between the cathode collector bar and the cathodic busbar. According to the invention, this voltage drop is initially very low, in particular less than 10 mV, compared to at least about 15 mV for prior art solutions, and does not increase significantly over time.

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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 concerne un connecteur électrique souple (10) permettant de connecter une extrémité (3, 4) d'une barre de collecteur de cathode (11) à une barre omnibus cathodique (5) d'une cellule électrolytique, convenant au procédé d'électrolyse Hall-Héroult, ledit connecteur comprenant un corps allongé souple (12) comprenant des feuilles ou des bandes d'aluminium, des moyens (14, 16) permettant de fixer une première extrémité (12') dudit corps à une extrémité (4) respective de ladite barre de collecteur de cathode (11), des moyens permettant fixer une seconde extrémité (12'') dudit corps à ladite barre omnibus (5), ledit connecteur étant caractérisé en ce que lesdits moyens permettant de fixer ladite seconde extrémité dudit corps à ladite barre omnibus cathodique comprennent un premier élément d'interface (20) qui comprend : - un élement de connexion électrique (22 ; 122 ; 222 ; 322 ; 422) composé d'aluminium, fixé à demeure à ladite seconde extrémité (12'') du corps (12), - un élément de fixation mécanique (24 ; 124 ; 222 ; 322 ; 422) conçu pour être fixé amovible à ladite barre omnibus cathodique.
PCT/IB2017/051591 2016-03-21 2017-03-20 Connecteur électrique souple destiné à une cellule électrolytique Ceased WO2017163162A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1604723.5 2016-03-21
GB1604723.5A GB2548571A (en) 2016-03-21 2016-03-21 Flexible electrical connector for electrolytic cell

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WO2017163162A1 true WO2017163162A1 (fr) 2017-09-28

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CN112853405A (zh) * 2021-01-11 2021-05-28 北京有研粉末新材料研究院有限公司 电解制粉装置
CN112877733A (zh) * 2021-01-11 2021-06-01 北京有研粉末新材料研究院有限公司 电解制粉用连接器、电解制粉装置及制造方法
CN114555867A (zh) * 2019-09-17 2022-05-27 Amc公司 包括短接装置和断路器的电解槽供电电路
CN115710730A (zh) * 2022-11-25 2023-02-24 东北大学设计研究院（有限公司） 一种用于铝电解槽的阴极导电棒组装方法

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DE3436442A1 (de) * 1983-10-04 1985-04-11 Aluminium Pechiney, Paris Wanne zur elektrolyse mit einer stromstaerke ueber 250.000 a fuer die erzeugung von aluminium nach dem hall-heroult-verfahren
US6419813B1 (en) * 2000-11-25 2002-07-16 Northwest Aluminum Technologies Cathode connector for aluminum low temperature smelting cell
CN200996054Y (zh) * 2006-09-13 2007-12-26 东北大学设计研究院（有限公司） 一种特大型铝电解槽阴极母线配置结构
WO2012161594A1 (fr) * 2011-05-23 2012-11-29 National Aluminium Limited Connexions bimétalliques pour applications sous courants de haute intensité

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* Cited by examiner, † Cited by third party
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CN114555867A (zh) * 2019-09-17 2022-05-27 Amc公司 包括短接装置和断路器的电解槽供电电路
CN112853405A (zh) * 2021-01-11 2021-05-28 北京有研粉末新材料研究院有限公司 电解制粉装置
CN112877733A (zh) * 2021-01-11 2021-06-01 北京有研粉末新材料研究院有限公司 电解制粉用连接器、电解制粉装置及制造方法
CN115710730A (zh) * 2022-11-25 2023-02-24 东北大学设计研究院（有限公司） 一种用于铝电解槽的阴极导电棒组装方法

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