EP1627099B1 - Organe de manutention de connecteurs d'electrode de cellules d'elctrolyse destinees a la production d'aluminium - Google Patents

Organe de manutention de connecteurs d'electrode de cellules d'elctrolyse destinees a la production d'aluminium Download PDF

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Publication number
EP1627099B1
EP1627099B1 EP04742688A EP04742688A EP1627099B1 EP 1627099 B1 EP1627099 B1 EP 1627099B1 EP 04742688 A EP04742688 A EP 04742688A EP 04742688 A EP04742688 A EP 04742688A EP 1627099 B1 EP1627099 B1 EP 1627099B1
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EP
European Patent Office
Prior art keywords
connector
handling device
mobile member
handling
mobile
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.)
Expired - Lifetime
Application number
EP04742688A
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German (de)
English (en)
French (fr)
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EP1627099A2 (fr
Inventor
Patrick Delescluse
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Fives ECL SAS
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ECL SAS
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Filing date
Publication date
Application filed by ECL SAS filed Critical ECL SAS
Publication of EP1627099A2 publication Critical patent/EP1627099A2/fr
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Publication of EP1627099B1 publication Critical patent/EP1627099B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates to aluminum production plants by igneous electrolysis according to the Hall-Héroult process. It relates more particularly handling equipment used in said factories.
  • Aluminum metal is produced industrially by igneous electrolysis, namely by electrolysis of alumina in solution in a bath of molten cryolite, called electrolyte bath, according to the well-known Hall-Héroult process.
  • the electrolyte bath is contained in tanks, called “electrolysis cells”, comprising a steel box, which is coated internally with refractory and / or insulating materials, and a cathode assembly located at the bottom of the tank.
  • Anodes typically of carbonaceous material, are partially immersed in the electrolyte bath.
  • the assembly formed by an electrolytic cell, its anodes and the electrolyte bath is called an electrolysis cell.
  • the anodes are provided with a metal rod for electrical and mechanical connection to a metal frame, called anode frame, which is movable relative to a fixed gantry disposed above the electrolytic cell.
  • the anode rods are connected to the anode frame by means of hooks arranged on either side of the anode rods and removable connectors able to be deposited on these hooks and to press the anode rods against the anode frame.
  • French patent FR 2 039 543 (corresponding to the US patent US 3,627,670 ) describes such devices.
  • an electrolysis plant requires interventions on the electrolysis cells including among others the replacement of spent anodes by new anodes.
  • the most modern factories are equipped with at least one lifting and handling unit comprising a traveling crane, which can be translated over and along the electrolysis cells, and a trolley equipped with several handling and intervention devices (often called "tools").
  • French patent FR 2 039 543 discloses a handling device for handling connectors, including their introduction, removal and transport.
  • the applicant has therefore sought anode connector handling members for the aluminum production industry by igneous electrolysis, which can avoid these disadvantages while remaining reliable, simple and compact.
  • the subject of the invention is a handling device intended in particular for setting up and removing an electrolytic cell anode connector.
  • the invention relates to a handling device according to claim 1 an anode connector provided with two lateral journals and a clamping screw, said handling member comprising a clamping member, such as a key, adapted to cooperate with the clamping screw of the connector so as to modify its clamping state, and characterized in that it comprises a locking system adapted to cooperate with the clamping member and the connector so as to block it in a given position - called normal handling position - in the handling member by loosening the connector with the clamping member, in that it further comprises at least one movable member having an open position and a closed position and in that the movable member comprises a support adapted to support the connector - typically by said lateral journals - when in the closed position and means for causing movement of the movable member from the closed position to the open position.
  • a clamping member such as a key
  • the applicant has had the idea to provide the handling member with a locking system for fixing the connector in the handling member in a normal handling position and a movable member to act as a possible support in case of failure of the block in the handling member. Such a failure can occur, for example, when the connector has been damaged or deformed or when it is worn.
  • the invention also relates to an anode connector provided with a gripping means adapted to cooperate with the locking system of the handling member.
  • the invention also relates to a lifting and handling unit comprising at least one anode connector handling member according to the invention.
  • the invention also relates to the use of the handling device according to the invention in an aluminum production plant by igneous electrolysis.
  • the invention also relates to the use of a connector according to the invention in an aluminum production plant by igneous electrolysis.
  • the invention further relates to the use of a lifting and handling unit according to the invention in an aluminum production plant by igneous electrolysis.
  • Electrolysis plants for the production of aluminum comprise one or more electrolysis rooms (100) having a large number of electrolysis cells (1) normally arranged in rows or rows (typically side by side or head to head ), each row or file typically having one or more hundreds of cells.
  • an electrolysis cell (1) comprises a tank (2), adapted to contain the liquid metal and the electrolyte bath, a superstructure (3) and anodes (8), typically precooked anodes.
  • the superstructure (3) comprises a fixed gantry (4) and a moving metal anode frame (5).
  • the anodes (8) are provided with a metal rod (9) for fixing and electrical connection anodes (8) to the anode frame (5).
  • the superstructure (3) also comprises at least one jack (not shown) coupled to the anode frame (5) by connecting rods (6) and levers (7).
  • the anode frame (5) can be moved vertically (upwards or downwards) under the action of the cylinder (s).
  • the anode rods (9) are fixed to the anode frame (5) by connectors (200) typically having two levers (201, 202) adapted to articulate around a common axis (213), clamping means (205, 206, 210, 211) for articulating said levers (201, 202) and two trunnions (or pins) side (212, 212 ') disposed on each side of the connector.
  • the lateral journals (212, 212 ') generally form the common axis (213) and are typically constituted by the ends of a rod - generally cylindrical - which passes through the connector from side to side. Said journals (212, 212 ') are intended to rest in the recess (11, 11') of the hooks (10, 10 ') fixed to the anode frame (5) and located on either side of each anode rod (9).
  • a connector (200) has at least one first state, called a tight state, and a second state, called a loose state.
  • the tightening state allows either to fix the anode rod (9) on the anode frame (5), or to release the anode rod (9): in the tightened state, the connector (200) applies pressure against the anode rod (9) and the plate on the anode frame (5); in the loosened state, the connector (200) no longer applies pressure against the anode rod (9), so that the connector and the anode can be removed.
  • a connector (200) can pass between the two clamping states by actuating the clamping means (205, 206, 210, 211).
  • These means normally comprise a screw (210) adapted to cooperate with an outer clamping member (302), such as a key, generally attached to a handling member (300).
  • the clamping screw (210) is typically provided with a head (211) adapted to be inserted into the clamping member (302) for clamping or loosening the connector (200).
  • the clamping means also comprise nuts (205, 206) fixed to the levers (201, 202) of the connector, preferably movably, and adapted to cooperate with the screw (210) of in order to allow the articulation of the levers (201, 202) and the tightening / loosening of the connector (200).
  • the levers (201, 202) of a connector (200) generally comprise crosspieces (203, 204) intended in particular to communicate, directly or indirectly, the clamping pressure of the connector against the anode rods.
  • the electrolysis rooms (100) normally comprise at least one lifting and handling unit or "service machine” (20).
  • Said unit (20) typically comprises a traveling crane (21) able to be moved along the electrolysis cells on treads (23, 23 '), a trolley (22) able to move on the crane ( 21), and handling and intervention members (often referred to as "tools"), such as a handling member (300) for the anode connectors (200).
  • the handling member (300) is typically placed at the end of a telescopic arm (24).
  • the handling member (300) typically comprises a frame (301) and a fastening means (304).
  • the connector In said determined position, called the normal handling position, the connector is properly anchored in the handling member, unless damaged, and can be moved and transported.
  • the support (313, 313 ') In this position, the support (313, 313 ') is normally not necessary to carry the connector, that is to say that said support is intended to wear the connector only in case of damage.
  • the clamping screw (210) remains normally engaged in the clamping member (302). The connector (200) can then be disengaged or removed from said determined position by clamping the connector with the clamping member (302).
  • said support (313, 313 ') is able to support the connector (200) by said lateral journals (212, 212'), when the or each movable member (312, 312 ') is in the closed position.
  • the support (313, 313 ') advantageously comprises a concavity (314, 314'), essentially turned down in use, adapted to receive a pin (212, 212 ') connector.
  • the or each movable member (312, 312 ') further comprises a locking means (314, 314') for preventing movement of the or each movable member (312, 312 '). from the closed position to the open position when the connector (200) rests on the support (313, 313 ').
  • a locking means (314, 314') for preventing movement of the or each movable member (312, 312 '). from the closed position to the open position when the connector (200) rests on the support (313, 313 ').
  • This situation can occur when the connector is not blocked - or not properly locked - in the normal handling position, in which case the connector can be driven downward by gravity until it rests on the carrier (313, 313 ' ).
  • This situation can also occur when the connector is released from the normal position during handling, typically due to mishandling.
  • This variant makes it possible to prevent an operator from trying to put in place a loose connector in the handling device, which could cause the connector to fall.
  • the handling member is characterized in that it comprises two mobile members (312, 312 ') each comprising a support (313, 313'), in that each support (313, 313 ') comprises at least one concavity (314, 314') adapted to receive a lateral trunnion (212, 212 ') and in that, so as to form said locking means, the dimensions of each concavity (314, 314 ') are such that, when the connector is locked in said determined (so-called normal) position, each movable member (312, 312') can move unobstructed, whereas, when the lateral pins (212, 212 ') ') of the connector (200) rest in said concavities (314, 314'), the movement of the or each movable member (312, 312 ') is mechanically prohibited by a stop effect.
  • the or each movable member (312, 312 ') is typically adapted to be pivotally displaced about an axis (303).
  • the locking system (310, 310 ', 320) comprises at least one attachment means (320) able to cooperate with the connector (200) and the clamping member ( 302) so as to cause the locking of the connector (200) in the handling member (300).
  • the attachment means (320) is typically adapted to cooperate with the connector (200) via a gripping means (231, 232) provided on the connector.
  • the hooking means (320) is housed in a gripping means (231, 232) of the connector (200) during the loosening operation of the latter by means of the clamping member (302). In this position, the connector (200) can not move vertically (due in particular to the attachment means (320) which supports the connector), nor horizontally (because of the screw (210) which remains engaged in the clamping member (302)).
  • the attachment means (320) is advantageously a fixed or movable part capable of cooperating with the connector (200), typically by insertion into a gripping means (231, 232) provided on the connector, so as to block it .
  • the attachment means (320) is typically a lug, a finger or a protuberance.
  • the locking system (310, 310 ', 320) comprises at least one guide means (310, 310'), which can be fixed or movable, for guiding the insertion of the connector in the blocking system.
  • the guide means (310, 310 ') typically comprises a fork.
  • Said system preferably comprises two forks (310, 310 ') arranged to allow the insertion of the connector between them and the guiding of each pin (212, 212') of the connector by each fork (310, 310 '). This variant facilitates the establishment and locking of the connector in the determined position.
  • the shape of the concavity (311, 311 ') of each fork (310, 310') is advantageously complementary to that of a pin (212, 212 ') of the connector.
  • the bottom of the concavity (311, 311 ') possibly makes it possible to limit the vertical displacements of the connector.
  • the or each guide means (310, 310 ') is advantageously mobile. It may optionally be provided with an elastic return means capable of returning it to an equilibrium position.
  • the mobility of the guide means or gives the locking system a certain flexibility when inserting a connector in the handling member and thus avoids possible degradation of the elements of said system. It also makes it possible to overcome certain differences in the size of the connectors.
  • Any concavities (311, 311 ', 314, 314') advantageously form an opening (305, 305 ') capable of preventing the transverse exit of a connector pin (212, 212').
  • Said means (315, 315 ') for causing the displacement of the or each movable member (312, 312') from the closed position to the open position advantageously comprises a cam fitted on said movable member and configured so that it can cooperate with said hooks (10, 10 ') - and more precisely with the ends (12, 12') of said hooks - so as to cause the displacement of the or each movable member (312, 312 ') from the closed position to the position opened by a relative movement between the handling member (300) and the fastening hooks (10, 10 ').
  • the simplicity of this embodiment gives great reliability to the handling member.
  • the means (315, 315 ') may optionally be a controlled mechanical, pneumatic or electromechanical means.
  • a connector (200) which is particularly advantageous for implementing the invention comprises two levers (201, 202), two lateral journals (212, 212 '), a clamping screw (210), and in addition at least one gripping means (231, 232) adapted to cooperate with the locking system (310, 310 ', 320) of the handling member so as to lock the connector in the determined position, said normal handling position.
  • the two levers (201, 202) each comprise a crossbar (203, 204) and said gripping means is a flange (231, 232) provided on at least one of the crosspieces (203, 204). , 204).
  • This connector (200) can be handled by the handling member (300) according to the invention.
  • the handling member comprises two forks (310, 310 ') and two movable members (312, 312') provided with a cam (315, 315 ') and suitable to pivot about an axis (303).
  • FIG 5 corresponds to the normal case in which the connector (200) fits correctly in the handling member.
  • the connector (200) is initially inserted into the hooks (10, 10 ') and resting on an anode rod (9) in the tight state ( Figure 5 (A) ).
  • the handling member (300) is brought close to the connection so as to insert the connector (200) and the hooks (10, 10 ') between the movable members (312, 312 ').
  • the cams (315, 315 ') then slide on the ends (12, 12') of the hooks and cause the pivoting of the movable members (312, 312 '), which then swing in the open position.
  • the screw head (211) is inserted into the clamping member (302) and the pins (212, 212 ') of the connector are engaged in the forks (310, 310') ( Figure 5 (B) ).
  • the connector is then loosened with the aid of the clamping member, which causes the insertion means (320) to be inserted into the connector and the latter to be locked in a normal position inside the connector.
  • handling device Figure 5 (C) ).
  • the handling member is then raised, which causes the mobile members (312, 312 ') to pivot under the effect of gravitation, which then return to the closed position ( Figure 5 (D) ).
  • the moving limbs can be moved in the way, so that if you want to install the connector on another anode, you can simply perform the procedure in reverse.
  • the example shown in figure 6 corresponds to a case in which the connector (200) is not inserted correctly into the handling device.
  • the attachment means (320) is not inserted into the gripping means (231, 232) of the connector, so that it is not locked in the normal handling position.
  • the journals (212, 212 ') then bear, by gravity, on the support (313, 313') of each mobile member (312, 312 ') ( Figure 6 (A) ). In this position, the concavities (314, 314 ') prohibit the movement of the moving members (312, 312').
  • the figure 7 illustrates an unlocking device (400) adapted to unlock the handling member when the connector is not inserted in the normal position inside the handling member.
  • Said device (400) comprises a receptacle (401) able to support the connector (200) and a lever (402) able to pivot about an axis (403).
  • the lever (402) is initially deported so as to disengage the sides of the receptacle (see the arrow of the Figure 7 (A) ).
  • the handling member (300) in which a connector (200) is inserted out of the normal position is brought near the device (400) so as to put the connector into the receptacle (401) ( Figure 7 (A) ).

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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)
  • Load-Engaging Elements For Cranes (AREA)
  • Manipulator (AREA)
  • Jib Cranes (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP04742688A 2003-05-12 2004-05-10 Organe de manutention de connecteurs d'electrode de cellules d'elctrolyse destinees a la production d'aluminium Expired - Lifetime EP1627099B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0305679A FR2854906B1 (fr) 2003-05-12 2003-05-12 Organe de manutention de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
PCT/FR2004/001131 WO2004101853A2 (fr) 2003-05-12 2004-05-10 Organe de manutention de connecteurs d’electrode de cellules d'electrolyse destinees a la production d'aluminium

Publications (2)

Publication Number Publication Date
EP1627099A2 EP1627099A2 (fr) 2006-02-22
EP1627099B1 true EP1627099B1 (fr) 2011-02-16

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EP04742688A Expired - Lifetime EP1627099B1 (fr) 2003-05-12 2004-05-10 Organe de manutention de connecteurs d'electrode de cellules d'elctrolyse destinees a la production d'aluminium

Country Status (15)

Country Link
US (1) US7344625B2 (es)
EP (1) EP1627099B1 (es)
CN (1) CN1788110B (es)
AR (1) AR044157A1 (es)
AT (1) ATE498712T1 (es)
AU (1) AU2004239044B2 (es)
BR (1) BRPI0410247A (es)
CA (1) CA2525106A1 (es)
DE (1) DE602004031418D1 (es)
FR (1) FR2854906B1 (es)
IS (1) IS8166A (es)
NO (1) NO20055845L (es)
RU (1) RU2338813C2 (es)
WO (1) WO2004101853A2 (es)
ZA (1) ZA200509056B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4079939A1 (de) 2021-04-22 2022-10-26 Reel GmbH Anodenklammer sowie sicherungsanordnung

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100540751C (zh) 2002-10-14 2009-09-16 皮奇尼铝公司 电解池泄漏限制器
FR2854906B1 (fr) 2003-05-12 2006-06-16 Ecl Organe de manutention de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
FR2884833B1 (fr) * 2005-04-20 2007-05-25 Ecl Soc Par Actions Simplifiee Dispositif et procede de maintien et de raccordement d'une tige d'anode sur un cadre anodique d'une cellule d'electrolise de l'aluminium
FR2902443B1 (fr) 2006-06-14 2008-08-22 Nkm Noell Special Cranes 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
FR2913985B1 (fr) * 2007-03-23 2009-08-28 Ecl Soc Par Actions Simplifiee Module de service muni d'au moins une pince a anode et d'un moyen permettant d'exercer une force ou un choc sur la tige d'anode.
FR2937341B1 (fr) * 2008-10-16 2010-11-12 Ecl Machine de service utilisee pour intervenir sur les cellules d'electrolyse de production d'aluminium par electrolyse ignee
CA2807888C (fr) * 2010-09-08 2018-05-22 E.C.L. Organe de manutention securisee de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
RU2458187C1 (ru) * 2011-03-24 2012-08-10 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Контактный зажим электролизера с обожженными анодами
FR2980488B1 (fr) * 2011-09-28 2014-04-11 Ecl Module de service compact et son utilisation dans une usine de production d'aluminium par electrolyse
FR2989693B1 (fr) * 2012-04-24 2015-06-12 Rio Tinto Alcan Int Ltd Connecteur de prechauffage
CN102978668B (zh) * 2012-12-20 2016-03-02 株洲天桥起重机股份有限公司 电解阴阳极板的吊运方法及其吊具
CN105986285A (zh) * 2015-02-09 2016-10-05 洛阳斯维机电科技有限公司 一种小盒卡具
CN105986286B (zh) * 2015-02-09 2018-03-16 李树宝 新型电解槽阳极小盒卡具及其专用耐高温润滑脂
FR3050462B1 (fr) * 2016-04-26 2020-12-25 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
FR3093737B1 (fr) * 2019-03-14 2023-02-24 Rio Tinto Alcan Int Ltd Dispositif de manutention destiné à convoyer un outil d’intervention sur une cuve d’électrolyse.
EP4293141A1 (en) 2022-06-13 2023-12-20 Dubai Aluminium PJSC Anode servicing assembly for an aluminium electrolysis plant, and methods for operating the same

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FR1437465A (fr) 1965-02-17 1966-05-06 Pechiney Prod Chimiques Sa Procédé pour la suspension du système anodique des cuves d'électrolyse à anode continue et appareillage pour la mise en oeuvre de ce procédé
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DE10117116A1 (de) 2001-04-06 2002-10-17 Willi Lyrmann Zentrisch spannender Schraubstock
CN100540751C (zh) 2002-10-14 2009-09-16 皮奇尼铝公司 电解池泄漏限制器
FR2854906B1 (fr) 2003-05-12 2006-06-16 Ecl Organe de manutention de connecteurs de cellules d'electrolyse destinees a la production d'aluminium
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4079939A1 (de) 2021-04-22 2022-10-26 Reel GmbH Anodenklammer sowie sicherungsanordnung

Also Published As

Publication number Publication date
AR044157A1 (es) 2005-08-24
WO2004101853A2 (fr) 2004-11-25
US20050266735A1 (en) 2005-12-01
NO20055845L (no) 2006-02-13
EP1627099A2 (fr) 2006-02-22
CN1788110A (zh) 2006-06-14
CN1788110B (zh) 2010-04-21
BRPI0410247A (pt) 2006-05-16
AU2004239044B2 (en) 2009-07-02
ATE498712T1 (de) 2011-03-15
RU2338813C2 (ru) 2008-11-20
CA2525106A1 (fr) 2004-11-25
DE602004031418D1 (de) 2011-03-31
US7344625B2 (en) 2008-03-18
WO2004101853A3 (fr) 2005-01-20
ZA200509056B (en) 2007-03-28
FR2854906B1 (fr) 2006-06-16
FR2854906A1 (fr) 2004-11-19
AU2004239044A1 (en) 2004-11-25
RU2005138498A (ru) 2006-05-10
IS8166A (is) 2005-12-02
NO20055845D0 (no) 2005-12-09

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