EP1876265A2 - Verbinder für den mechanischen und elektrischen Anschluss einer Anode an den Anodenrahmen einer Zelle zur Herstellung von Aluminium und Vorrichtung zum Greifen und Festziehen/Lockern eines solchen Verbinders - Google Patents

Verbinder für den mechanischen und elektrischen Anschluss einer Anode an den Anodenrahmen einer Zelle zur Herstellung von Aluminium und Vorrichtung zum Greifen und Festziehen/Lockern eines solchen Verbinders Download PDF

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Publication number
EP1876265A2
EP1876265A2 EP07301005A EP07301005A EP1876265A2 EP 1876265 A2 EP1876265 A2 EP 1876265A2 EP 07301005 A EP07301005 A EP 07301005A EP 07301005 A EP07301005 A EP 07301005A EP 1876265 A2 EP1876265 A2 EP 1876265A2
Authority
EP
European Patent Office
Prior art keywords
connector
anode
pressing member
clamping
loosening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07301005A
Other languages
English (en)
French (fr)
Other versions
EP1876265A3 (de
EP1876265B1 (de
Inventor
Roger Boinet
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.)
Reel GmbH
Original Assignee
NKM Noell Special Cranes GmbH
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 NKM Noell Special Cranes GmbH filed Critical NKM Noell Special Cranes GmbH
Publication of EP1876265A2 publication Critical patent/EP1876265A2/de
Publication of EP1876265A3 publication Critical patent/EP1876265A3/de
Application granted granted Critical
Publication of EP1876265B1 publication Critical patent/EP1876265B1/de
Active legal-status Critical Current
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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/10—External supporting frames or structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • 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
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon
    • 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 invention relates to the field of aluminum production according to the well-known technology of igneous electrolysis.
  • the production of aluminum is carried out in tanks or production cells mounted in series, each comprising a molten bath, including cryolite and alumina, crossed by a high amperage electric current.
  • these tanks comprise a certain number of precooked anodes which, as and when the electrolysis reaction, are consumed so that it is appropriate to proceed to their periodic replacement, this periodicity being typically 22 to 28 days.
  • anodes therefore have a removability character with respect to said cells. They are thus connected mechanically and electrically by means of a connector on an anode frame electrically conductive, associated with each of said cells.
  • This anode frame is driven by a vertical descent movement to compensate for the wear of the anodes related to their consumption, and thus maintain substantially constant the inter-polar distance between the anode and the cell acting cathode.
  • the anodes are attached to the anode frame by means of connectors ensuring both the mechanical connection of said anodes on the anode frame and secondly the electrical conduction to ensure the electrolysis reaction. More specifically, this mechanical connection occurs at the level of the anode rod, generally consisting of a square section of aluminum rod, sized to be able to support the weight of the anode.
  • This attachment must be particularly effective to prevent the falling of the anodes within the tank, and secondly to optimize the electrical connection to limit the voltage drop at the contact, because of the very strong amperages running through each of the anodes.
  • the anode rod is inserted between the anode frame and the edge of the levers located at the common axis. Effective clamping of the anode rod results from relative movement of said edge of the levers relative to the hooks.
  • the pressing surface of the levers close to the common axis is such that when the opposite ends of said levers are brought closer to each other by means of the clamping screw, a clamping force adapted to the application envisaged, on the other hand, when the said ends are moved away, the pressing surface of the levers is moved back relative to the reference frame finished by the hooks, thus releasing the considered anode rod.
  • this connector is actuated by a handling device intended to allow the different operations to be carried out in connection with the change of the anodes, besides enabling the anodic frame to be raised while keeping the altitude of the anode constant.
  • This device is provided with a gripping means of the connector in question associated with a means for clamping or loosening said connector.
  • Such a tool operates simultaneously with a tool adapted to the gripping of the anode rod proper also capable of exerting a function of lifting and tearing of the anode out of the electrolysis bath, also called " pulling key ".
  • the connector gripping means known to date are provided with a member cooperating with a flange formed on said connector.
  • Such a connector is for example described in the document FR A 2,854,906 .
  • the upper lever is provided with a gripping flange intended to cooperate with a fastening means formed in the handling member.
  • the object of the present invention is to overcome these various disadvantages.
  • it aims a suppressor connector devoid of hyperstatic character previously defined, and also provided with means such that the risk of falls become non-existent.
  • this connector for the mechanical and electrical connection of anode to the anode frame of an igneous electrolysis aluminum production cell, said frame being provided with fixing hooks intended to cooperate with the connector, consists of the two stirrups or jaws acting as a lever, articulated on a common axis whose respective extensions are received within said hooks, and are actuated in an antagonistic manner at their free ends by means of a two-zone clamping screw at opposite pitch cooperating with the level of crosspieces joining said free ends of the stirrups.
  • the pressing surface of the connector that is to say the zone intended to cooperate with the anode rod to allow the connection of the latter with the anode frame, is constituted by a pressure member distinct from the stirrups or cross members solidarisant one to another, and isostatically fixed on said connector or on the elements that constitute it.
  • the invention consists first of all in reporting to a connector of traditional invoice an additional isostatic member with respect thereto.
  • the isostatic character of this pressing member thus makes it possible, on the one hand, to overcome the deformations conventionally encountered on the anode rods, and on the other hand, to increase the surface and, as a corollary, the clamping efficiency of the rod. anode on the anode frame, with corollary, the optimization of the electrical contact in these two elements.
  • this pressing member comprises two flat surfaces extending substantially vertically from the central zone of the connector, these flat surfaces being received on ball joints formed at the cross members joining the constituent stirrups of the connector.
  • these flat surfaces are secured to one another by a portion surrounding the hinge axis of the stirrups. Due to the relative mobility of this pressing member relative to the actual connector, mobility inherent in the cooperation of the flat surfaces with the ball joints, there is then a perfectly isostatic connector.
  • the pressing member has a shape substantially in ⁇ (omega), the loop of the omega surrounding around the common axis of articulation of the two levers - jaws constituting the connector.
  • the posterior zone of the pressure member comprises a fin also extending vertically, said fin being relatively movably received in housings provided for this purpose in the posterior area of the anterior crosspieces joining the stirrups. .
  • the assembly constituted by the flat surfaces, the fin and the portion defining the omega is monobloc and made of pressed steel.
  • the invention relates secondly to a device for gripping and clamping / loosening such anode connection.
  • the support means of the connector is constituted by a claw, mounted oscillating along the same axis of articulation as that of the double forks, and intended to cooperate with the pressing member of said connector, and more particularly with lower end of the vertical fin of said pressing member.
  • the respective dimensions of the forks and the claw are chosen so as to correspond to the difference in altimetry between the common axis of articulation of the constituent levers of the connector and the actual positioning position of the lower end of the connector. lower wing of the pressing member which it is provided.
  • the gripping and clamping device of the connector is provided with a means of guiding against the anode rod, favoring its descent in contact with the connector, this guiding means consisting of a cylinder provided with lateral flanges of diameter. more important than that of the cylinder, and whose distance separating them corresponds substantially to the clearance close to the dimension of one side of the square section of the anode rods.
  • the forks are articulated on the prevention and clamping device but have, however, a limited movement.
  • the device also comprises elastic stop means intended to cooperate with the upper rear cross member of the connector, said means being dimensioned and positioned so as to induce the release of the pressure member out of the claw, when the connector is in a tight position, superabundantly optimizing the overall safety.
  • FIG. 1 therefore shows an electrolytic cell (1) intended to allow the production of aluminum by so-called igneous electrolysis technology.
  • a series of precooked anodes (2) typically made of carbon, is immersed and each fixed to an anode frame (3) via a substantially vertical conducting rod (4).
  • the anode frame (3) is metallic, electrically conductive, and is movable with respect to a fixed gantry (5) disposed above the electrolytic cell (1).
  • this anode frame (3) is capable of translating vertically with respect to the gantry (5).
  • FIG. 1 also shows the rods (4) of the anodes (2), enabling them to be fixed to the anode frame (3) by means of connector (10), described in greater detail below, each provided with a hinge pin received within hooks (6) fixed to said anode frame (3).
  • this connector (10) comprises firstly two levers or jaws, respectively (11) and (12), each consisting of two lateral flanges, respectively (13, 13 ') and (14, 14'), these different flanges being identical to each other.
  • the lateral flanges (13, 13 ') respectively (14, 14') of each of these two levers are interconnected by means of two crosspieces, respectively an anterior cross member (15, 16) and posterior (17, 18).
  • levers (11) and (12) are hinged to each other with respect to an axis (19), typically consisting of a cylindrical metal rod projecting from either side of said levers. It is these projections which are intended to be received in the hooks (6) fixed on the anode frame (3), and which will thus allow on the one hand, the reception of the connectors, and on the other hand, to ensure the clamping function of the rods (4) of the anodes against the anode frame.
  • the posterior crosspieces (17) and (18) are provided with a bore (20) and (21) intended to receive a clamping screw (22) comprising two collinear parts (23) and (24) which have the characteristic of having a opposite screw pitch.
  • bores (20) and (21) are provided with a complementary thread and corresponding to inverted screw pitch.
  • This screw (22) is provided with a screw head (25) in this case of substantially square section, and intended to cooperate with a clamping member described in detail later.
  • crosspieces (17) and (18) are not fixed, but are rotatably mounted on the side flanges (13, 13 '), respectively (14, 14'), to allow linear retention the shank of the clamping screw (22) during tightening or loosening of the connector.
  • the connector (10) comprises a pressing member (26) which is not constituted by the front end of the levers or by the free end of the front cross members (15) and (16).
  • this pressing member (26) consists of two flat surfaces, respectively upper (27) and lower (28), interconnected by a connecting zone (29) surround around the axis (19). as can be seen in FIGS. 4 and 5, for example.
  • this pressing member has a general shape in ⁇ .
  • Each of the upper (27) and lower (28) surfaces are mounted on a ball (30) formed at the free edge (31) of the respective anterior (15) and posterior (16) crosspieces.
  • This ball joint (30) cooperates with a substantially cylindrical profile (32) formed on the inner face (33) of said surfaces (27, 28).
  • this ball (30) has a spherical cap, adapted to allow said flat surfaces (27) and (28) a slight deflection in the horizontal plane and in the vertical plane, notwithstanding the connecting portion (29).
  • the pressing member (26) has a vertical fin (34) received in housings (35), (36) formed in the posterior edge, respectively (37, 38) of the front cross members (15) and (16).
  • the effective area of the flat surfaces (27) and (28) are approximately in width, one third of the width of the connector, it can be envisaged other types of pressing members in terms of dimension, according to the needs.
  • FIGS. 6 to 8 show the device for handling and clamping the connector according to the invention.
  • this device (40) firstly comprises a gripping member of the connector (10).
  • This gripping member comprises firstly a lateral fork (41, 42) articulated along an axis (43), but whose travel is limited by the cooperation of a lug (44) within a hole of length limited (45), secured to the structure of said gripping member.
  • said forks define a housing (46) for receiving the hinge axis (19) of a connector (10).
  • the gripping member also comprises a guide means (47) intended to promote its progression during the approach phase at a connector in place on the hooks (6) of the anode frame (3).
  • This guide means (47) consists in this case of a cylinder articulated along the axis (43), and provided with lateral guides (48), the inter-axis of said guides (48) being slightly greater than the width standard of anode rod (4).
  • the gripping member comprises a claw (49), extending substantially in the same direction as the main dimension of the forks (41, 42), but set back from those -this.
  • This claw (49) is provided with a lug (50) intended, as will be described later, to cooperate with the pressing member (26) of the connector (10), and more particularly with the vertical fin (34). ).
  • the gripping member finally comprises elastic stops (51) and (52), associated with coil springs, intended to bear on the posterior crosspieces (17) and (18) of a connector (10), so as to to allow the disengagement of the lug (50) of the claw (49) from the pressure member of said connector, when the latter is in the clamping position, and again, it will be described later.
  • the device according to the invention also comprises a clamping wrench (53) actuated conventionally by a hydraulic motor, but also sometimes by a pneumatic or even electric motor, and intended to cooperate with the head (25) of the clamping screw ( 22) of the connector (10).
  • a clamping wrench (53) actuated conventionally by a hydraulic motor, but also sometimes by a pneumatic or even electric motor, and intended to cooperate with the head (25) of the clamping screw ( 22) of the connector (10).
  • the respective dimensions of the claw (49), the forks (41, 42), and the location of the clamping wrench (53) are obviously determined according to the dimensions of the connector and its potential travel.
  • FIGS. 9 and 10 show the respective positions of the pre-emption and clamping device according to the invention in cooperation with a connector of the invention respectively in the lifting and clamping position.
  • the claw (49) When descent of the housings (46) of the forks (41, 42) in the direction of the axis (19) of the connector (10), the claw (49) is shaped so that it bears against the vertical rear wing (34) of the pressure member (26) of the connector, to pass under the lower end (55) of the wing in question to support this lower end by the lug (50) .
  • the clamping wrench (51) is actuated, inducing the loosening of the connector which can not be released due to the cooperation of the lug (50) with the lower end of the fin (34) on the one hand, and that of the housings (46) of the forks (41, 42) with the hinge axis (19).
  • the spring stops (51, 52) are supported on either side of the head or clamping sleeve (25) of the clamping screw (22) on the rear crossmember (17).
  • the spring stops (51, 52) do not rest on said rear cross member or exert a counter-reaction sufficient to induce tilting of the claw (49) with respect to its axis of articulation, (43), and therefore corollary its disengagement from the lower end (55) of the vertical vane (34) of the organ presser (26) of the connector in question, and thus its release.

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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)
  • Mechanical Engineering (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP20070301005 2006-06-14 2007-04-27 Verbinder für den mechanischen und elektrischen Anschluss einer Anode an den Anodenrahmen einer Zelle zur Herstellung von Aluminium und Vorrichtung zum Greifen und Festziehen/Lockern eines solchen Verbinders Active EP1876265B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0652519A FR2902443B1 (fr) 2006-06-14 2006-06-14 Connecteur pour le raccordement mecanique et electrique d'une anode au cadre anodique d'une cellule de production d'aluminium et dispositif de prehension et de serrage/desserage d'un tel connecteur

Publications (3)

Publication Number Publication Date
EP1876265A2 true EP1876265A2 (de) 2008-01-09
EP1876265A3 EP1876265A3 (de) 2008-12-24
EP1876265B1 EP1876265B1 (de) 2013-06-12

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EP20070301005 Active EP1876265B1 (de) 2006-06-14 2007-04-27 Verbinder für den mechanischen und elektrischen Anschluss einer Anode an den Anodenrahmen einer Zelle zur Herstellung von Aluminium und Vorrichtung zum Greifen und Festziehen/Lockern eines solchen Verbinders

Country Status (4)

Country Link
EP (1) EP1876265B1 (de)
ES (1) ES2424864T3 (de)
FR (1) FR2902443B1 (de)
RU (1) RU2439208C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012032234A1 (fr) * 2010-09-08 2012-03-15 E.C.L. Organe de manutention securisee de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
FR2989693A1 (fr) * 2012-04-24 2013-10-25 Rio Tinto Alcan Int Ltd Connecteur de prechauffage
CN106929879A (zh) * 2017-02-19 2017-07-07 周俊和 预焙阳极铝电解钢爪铝导杆导断电的方法
FR3050462A1 (fr) * 2016-04-26 2017-10-27 Nkm Noell Special Cranes Gmbh Connecteur pour le raccordement mecanique et electrique d'une anode au cadre anodique d'une cellule de production d'aluminium
CN109317824A (zh) * 2018-11-20 2019-02-12 重庆旗能电铝有限公司 一种用于新型铝导杆激光清洗机的铝导杆快速定位系统
CN109763144A (zh) * 2019-01-28 2019-05-17 中国铝业股份有限公司 一种基于连续阳极铝电解装置及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU170206U1 (ru) * 2016-07-07 2017-04-18 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Контактный зажим электролизера с обожженными анодами
EP4079939A1 (de) 2021-04-22 2022-10-26 Reel GmbH Anodenklammer sowie sicherungsanordnung

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0584024A1 (de) 1992-08-20 1994-02-23 Aluminium Pechiney Überbau für Aluminium-Elektrolysewanne mit hoher Stromstärke
FR2854906A1 (fr) 2003-05-12 2004-11-19 Ecl Organe de manutention de connecteurs de cellules d'electrolyse destinees a la production d'aluminium

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US4394242A (en) * 1980-01-28 1983-07-19 Adnovum Ag Clamp, tool, and electrolysis cell anode mount
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US5876585A (en) * 1996-05-29 1999-03-02 Schenk; Rodney J. Anode clamp
ES1052666Y (es) * 2002-08-13 2003-05-01 Ocamica Hermanos Sa Tornillo de apriete perfeccionado.

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0584024A1 (de) 1992-08-20 1994-02-23 Aluminium Pechiney Überbau für Aluminium-Elektrolysewanne mit hoher Stromstärke
FR2854906A1 (fr) 2003-05-12 2004-11-19 Ecl Organe de manutention de connecteurs de cellules d'electrolyse destinees a la production d'aluminium

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012032234A1 (fr) * 2010-09-08 2012-03-15 E.C.L. Organe de manutention securisee de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
AU2011300604B2 (en) * 2010-09-08 2014-03-06 E.C.L. Handling tool, for secure handling of connectors of electrolysis cells intended for aluminium production
US8888156B2 (en) 2010-09-08 2014-11-18 E.C.L. Handling tool, for secure handling of connectors of electrolysis cells intended for aluminium production
RU2587103C2 (ru) * 2010-09-08 2016-06-10 Э.С.Л. Орган надежного перемещения соединителей электролизных ячеек, предназначенных для производства алюминия
FR2989693A1 (fr) * 2012-04-24 2013-10-25 Rio Tinto Alcan Int Ltd Connecteur de prechauffage
WO2013159218A1 (fr) * 2012-04-24 2013-10-31 Rio Tinto Alcan International Limited Connecteur de prechauffage
EP2841626A4 (de) * 2012-04-24 2016-01-27 Rio Tinto Alcan Int Ltd Vorwärmverbinder
FR3050462A1 (fr) * 2016-04-26 2017-10-27 Nkm Noell Special Cranes Gmbh Connecteur pour le raccordement mecanique et electrique d'une anode au cadre anodique d'une cellule de production d'aluminium
CN106929879A (zh) * 2017-02-19 2017-07-07 周俊和 预焙阳极铝电解钢爪铝导杆导断电的方法
CN109317824A (zh) * 2018-11-20 2019-02-12 重庆旗能电铝有限公司 一种用于新型铝导杆激光清洗机的铝导杆快速定位系统
CN109317824B (zh) * 2018-11-20 2023-10-10 重庆旗能电铝有限公司 一种用于铝导杆激光清洗机的铝导杆快速定位系统
CN109763144A (zh) * 2019-01-28 2019-05-17 中国铝业股份有限公司 一种基于连续阳极铝电解装置及方法

Also Published As

Publication number Publication date
RU2439208C2 (ru) 2012-01-10
EP1876265A3 (de) 2008-12-24
FR2902443B1 (fr) 2008-08-22
EP1876265B1 (de) 2013-06-12
FR2902443A1 (fr) 2007-12-21
RU2007123527A (ru) 2008-12-20
ES2424864T3 (es) 2013-10-09

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