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US3627670A - Anode rod tightening apparatus for alumina electrolysis cells - Google Patents

Anode rod tightening apparatus for alumina electrolysis cells Download PDF

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Publication number
US3627670A
US3627670A US27777A US3627670DA US3627670A US 3627670 A US3627670 A US 3627670A US 27777 A US27777 A US 27777A US 3627670D A US3627670D A US 3627670DA US 3627670 A US3627670 A US 3627670A
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United States
Prior art keywords
screw
anode rod
levers
guiding
driving mechanism
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Expired - Lifetime
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US27777A
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English (en)
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Daniel Duclaux
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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

  • anode rod tightening apparatus for alumina electrolysis cells having main bus bars comprising the combination of a clamping device and a driving mechanism in which the clamping device is formed of a horizontally disposed shaft with a pair oflevers articulated on the shaft and a nut member on each of the levers adapted to engage opposite screw-threaded sections on a screw member for displacement of the levers in the direction toward and away from each other responsive to turning movement of the screw and a jaw member on each lever adapted to engage the anode rod when the levers are apart and in which the driving mechanism comprises a double clamp for engaging laterally spaced apart portions of the shaft and a wrench mounted for vertical movement into and out of engagement with the screw to effect turning movement of the screw when in operative engagement therewith and a guide means along the rod for guiding the driving mechanism.
  • the clamping device is formed of a horizontally disposed shaft with a pair oflevers articulated on the shaft and a nut member on each of the levers adapted to engage opposite screw-threaded sections on
  • the anodes are sealed at the lower portion of rods which are fixed by clamping onto the main horizontal bars to provide a rigid assembly which represents the anodic system.
  • the anodic system is actuated by vertical movement in a downward stroke to compensate for the spending of the anodes thereby to maintain the interpolar distance relatively constant.
  • the spending of the anodes requires replacement on the one hand and raising of the main bus bars when they arrive at the bottom end of their stroke by the above-mentioned movement, on the other hand.
  • the raising of the bars should be performed without any movement of the anodes.
  • the tightening system of the rods on the main bus bars has a double purpose: to insure a satisfactory mechanical connection, and to perform an electrical contact for maintaining a very low-voltage drop under the action of the very highintensity current passing through each anode. In modern cells, this intensity can reach oreven exceed 10,000 amperes.
  • Tightening the connection to a pressure of 12,000 to 15,000 daN is desired for such high-intensity currents.
  • the tightening should, of course, be measured and controlled so as to maintain the desired uniformity.
  • Certain hand operated systems include a removable part which has to be removed by hand to allow the extraction or setting of the anode rod.
  • FIG. 1 is a side elevational view of the clamp embodying features of this invention, with the clamp shown in the tightened position;
  • FIG. 2 is a side elevational view similar to that of FIG. 1, showing the clamp in loosened position;
  • FIG. 3 is a front elevational view of the clamp shown in FIG.
  • FIG. 4 is a plan view of the clamp shown in FIG. 1;
  • FIG. 5 is a side elevational view of the lower portion of the clamping device embodying the features of this invention.
  • FIG. 6 is a side elevational view, partially in section, of the upper portion of the clamp shown in FIG. 5;
  • FIG. 7 is a front view, partially in cross section, of the clamping device shown in FIGS. 5 and 6;
  • FIG. 8 is an elevational view, partially in section, of the lower portion of the driving mechanism installed on the clamping device
  • FIG. 9 is an elevational view showing the assembly of the clamping and operating devices in mounted position
  • FIG. 10 is an elevational view similar to that of FIG. 9 showing the devices in tightened position.
  • FIG. 11 is an elevational view of the assembly in position after removal of a spent electrode.
  • the invention includes, on the one hand, a clamping device, and on the other hand, an operating mechanism.
  • the clamping device is designed and built to apply very high-tightening pressure and to be controlled and operated by a special mechanism with tightening control.
  • the operating mechanism is designed to operate efficiently and safely on the clamping device.
  • the clamping device and the operating mechanism are designed to cooperate one with the other to provide a homogeneous assembly adapted to the various exacting requirements of operation.
  • the clamping device is also designed to facilitate its mechanical operation during raising of the bus bars. Finally, the clamping device is also arranged to operate in fitting relation with most efficient and economical shapes of anode rods.
  • the clamping device includes as essential elements two levers articulated on a common shaft, two-nut trunnions mounted respectively on each of the levers and a screw embodying separate portions having opposite threads (a righthand thread and a left-hand thread), in operative engagement with the nuts to adjust the levers in a direction toward and away from each other.
  • Each lever includes at least one jaw which applies pressure onto the anode rods when the levers are moved in the direction away from each other.
  • the common shaft is supported on two hooks attached to the main bar and located on each side of the anode rod.
  • the operating mechanism includes as essential elements one double clamp capable of grasping the common shaft of the levers of the clamping device at each of its ends and which, for this purpose, extends further than the supporting hooks, a means of guiding along the anode rod, embodying for example a roller provided with flanges mounted on a shaft attached to a frame supporting the double clamp and the wrench and in which the frame is located at the end of a vertical ram which permits an up and down stroke.
  • the ram can be located along the centerline of the tightening wrench thereby to permit transmission of the last of its rotational movement.
  • the ram is movable both in its vertical stroke and in rotation and it can be telescopically arranged.
  • the device has for its purpose the tightening of an anode rod 10 on a main bus bar 3.
  • a pair of hooks l are attached in laterally spaced apart relation on the main bus bar 3 as by means of bolts 2.
  • Levers 4 and 5 are articulated on a horizontally disposed shaft 6 which is supported at its ends on the two hooks 1.
  • a screw 8 which includes two threaded portions, one a right-handed thread and another a left-handed thread, acts on nuts provided with trunnions 9 to actuate the levers 4 and 5.
  • the screw 8 is provided with a head 81 adapted to receive a tool for effecting turning movement.
  • the driving mechanism includes a double clamp 12 which is constantly urged towards closed position by a coil spring 13 and which is capable of grasping the pin 6 by each of its ends which, for this purpose, extend beyond the supporting hooks l; a tightening socket wrench I4 capable of acting on the head 81 provided on the double screw 8; a tightening device along the anode rod 10 formed, for example, by a roller 11 provided with side flanges and mounted for rotational movement on a shaft carried by a frame 111 which supports the double clamp 12 and the wrench 14.
  • the frame 111 is located at the end of a vertical ram 17 to permit its up and down stroke.
  • the ram can advantageously be located along the centerline of the tightening wrench 14 so as to transmit, to the very end, its rotational movement.
  • the ram is mounted for movement both in its vertical stroke and for rotation and it can be telescopically arranged.
  • the driving mechanism After having run along the anode rod on roller 11, comes into position by clamping the movable jaws of the double clamp 12 onto pin 6. The jaws are tightened onto the pin by the coil spring 13.
  • the action of the spring can be, for example, completed by a small cylinder, not shown.
  • the rotation of the wrench operates to loosen the clamping device and bring the pin 6 in the direction towards the left in FIG. 5 or in the direction towards the anode.
  • the tightening wrench 14 includes a socket head 14! mounted to cooperate with the head 81 of the screw 8.
  • the tightening clamp is mounted on bearings 142 to enable turning movement in the frame 111.
  • roller 1 As shown in FIG. 7, the roller 1] is mounted on ball bearings and the jaws of the clamp 12 are articulated directly on the pin 110.
  • a lifting bell 15 has been shown to cover the top of the anode rod 10 and to grasp it with hooks 16, for example.
  • FIG. 8 shows the device during its vertical stroke with the roller 1 ll turning on the anode rod 10 for guiding movement.
  • the vertical ram 17, with its operating parts is articulated on a horizontal pin parallel to the main bus bar 3 and supported by the lifting bell 15.
  • a spring 13 engages the ram in a manner to hold the roller 11 in contact with the anode rod 10 and also against a slope provided for this purpose on the lifting bell 15 as the roller passes over the intermediate portion 21 integral with the lifting bell.
  • the rotation of the wrench is actuated by a motor 18 which may be in the form of an electric, pneumatic or hydraulic motor.
  • This arrangement enables the device to advance while tightening itself successively on the rod 10 and the lifting bell l5 which, on the one hand, allows the device to be maintained along the lifting bell l5 and thus leaves the anode rod 10 completely free, and, on the other hand, it allows reset of the device with certainty on hooks 1 when operating in reverse, even in the case of lack of visibility.
  • the guiding ram 17 can be actuated in vertical movement by an electromechanical jack or a pneumatic or hydraulic cylinder 24.
  • FIG. 10 shows the assembly when the bus bar 3 is in its lowest position relative to the anode rod 10, with the clamping device in loosened position.
  • FIG. 11 shows it in a position after removal of a spent anode and before grasping a new anode. The driving mechanism keeps the clamping device set back in place after the setting of a new anode in the cell.
  • FIGS. 8-1 1 the system is shown as being attached onto a machine having for one of its functions the change of spent anodes.
  • the system is suspended from the end of a rigid horizontally disposed arm 22 with the lifting bell 15 being fixed, for example, to the end of the guiding ram 23 adapted to be actuated in a vertical direction by a cylinder.
  • the pin 21 is attached to the upper portion of the two vertical arms integral with the lifting bell 15.
  • the screw 8 which actuates the clamping device, is vertically disposed such that a vertical traveling movement is sufficient to place the socket onto the head of the screw to permit rotational movement thereof.
  • An anode rod tightening apparatus for alumina electrolysis cells having main bus bars comprising the combination of a clamping device and a driving mechanism for the clamping device, said clamping device comprising a horizontally disposed shaft, a pair of levers articulated on said shaft, an elongate screw member having one portion with a right-hand thread and another portion with a left-hand thread, a nut member mounted respectively on each of the levers with one nut member threadab y engaglng one of the threaded portions and the other nut member engaging the other of the threaded portions of said screw for displacement of the levers in the direction toward and away from each other responsive to turning movement of said screw, a jaw member on each lever in pressure engagement with an anode rod when the levers are apart, hooks mounted in laterally spaced apart relation on the bus bars for supporting the shaft, said driving mechanism comprising a double clamp for engaging laterally spaced apart portions of the shaft, a wrench vertically disposed relative the screw and mounted for vertical movement into and out of
  • An apparatus as claimed in claim 1 which includes a frame and in which the guiding system of the driving mechanism comprises a roller having side flanges and mounted for rotational movement on the frame and in which the frame supports the double clamp and wrench.
  • An apparatus as claimed in claim I which includes a guiding ram aligned with the axis of the tightening wrench and mounted for transmission of rotational movement to the wrench.
  • An apparatus as claimed in claim 4 in which the guiding ram includes a horizontal pin parallel to the main bus bar and on which the ram is articulated for rocking movement, and a spring resiliently urging the guiding system into engagement with the anode rod.
  • An apparatus as claimed in claim 5 in which the anode rod has an extension in the form of a slope and which includes a lifting bell having an intermediate portion connected to the slope.
  • An apparatus as claimed in claim 7 which includes a horizontal pin carried by the lifting bell and on which the guiding ram is pivotally mounted.

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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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US27777A 1969-04-14 1970-04-13 Anode rod tightening apparatus for alumina electrolysis cells Expired - Lifetime US3627670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6910161A FR2039543A5 (fr) 1969-04-14 1969-04-14

Publications (1)

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US3627670A true US3627670A (en) 1971-12-14

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US27777A Expired - Lifetime US3627670A (en) 1969-04-14 1970-04-13 Anode rod tightening apparatus for alumina electrolysis cells

Country Status (14)

Country Link
US (1) US3627670A (fr)
JP (1) JPS493721B1 (fr)
BE (1) BE748870A (fr)
CH (1) CH510740A (fr)
DE (1) DE2017654B2 (fr)
ES (1) ES378497A1 (fr)
FR (1) FR2039543A5 (fr)
GB (1) GB1287065A (fr)
NL (1) NL165512C (fr)
NO (1) NO125104B (fr)
PL (1) PL71020B1 (fr)
RO (1) RO61350A2 (fr)
SU (1) SU559659A3 (fr)
YU (1) YU95770A (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888757A (en) * 1973-06-07 1975-06-10 Nl Kraanbouw Mij B V Anode rod clamping assembly
US4394242A (en) * 1980-01-28 1983-07-19 Adnovum Ag Clamp, tool, and electrolysis cell anode mount
US4773980A (en) * 1986-11-10 1988-09-27 Aluminium Pechiney Process and apparatus for sealing cathodic bars in a prestressed condition
AU610955B2 (en) * 1987-12-15 1991-05-30 B.V. Nederlandse Kraanbouw Maatschappij N K M Clamping device for clamping a vertical anode bar against a horizontal busbar of an electrolysis plant for producing aluminium
US5378338A (en) * 1992-08-20 1995-01-03 Aluminium Pechiney Superstructure for a very high power electrolysis cell for the production of aluminum
US5876585A (en) * 1996-05-29 1999-03-02 Schenk; Rodney J. Anode clamp
US20050194249A1 (en) * 2002-10-14 2005-09-08 Aluminum Pechiney Electrolytic cell leak limiter
US20050266735A1 (en) * 2003-05-12 2005-12-01 Aluminum Pechiney Element for handling connectors for electrolytic cells which are used for the production of aluminum
US20080142357A1 (en) * 2005-04-20 2008-06-19 E.C.L. Device and Method for Maintaining and Connecting an Anode Rod on an Anode Frame of an Aluminium Electrolytic Cell
USD572673S1 (en) * 2006-07-13 2008-07-08 Ebara Corporation Anode shaft
CN100562607C (zh) * 2006-06-26 2009-11-25 高德金 小盒卡具夹紧装置
US20110194916A1 (en) * 2008-10-16 2011-08-11 E.C.L. Pot tending machine for working on electrolysis cells for the production of aluminum by igneous electrolysis
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
WO2013159218A1 (fr) * 2012-04-24 2013-10-31 Rio Tinto Alcan International Limited Connecteur de prechauffage
FR3016895A1 (fr) * 2014-01-27 2015-07-31 Rio Tinto Alcan Int Ltd Dispositif de levage d'ensembles anodiques d'une cuve d'electrolyse.
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
US20220090280A1 (en) * 2019-03-14 2022-03-24 Rio Tinto Alcan International Limited Handling device to be used to convey an intervention tool on an electrolytic cell
US20220136120A1 (en) * 2019-03-14 2022-05-05 Rio Tinto Alcan International Limited Intervention tool for the operation of an electrolytic cell

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313427U (fr) * 1976-07-16 1978-02-03
JPS5388322U (fr) * 1976-12-21 1978-07-20
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
CN104178778B (zh) * 2014-08-31 2016-07-20 湖南创元铝业有限公司 阳极导杆密封装置
ES2999612T3 (en) 2017-09-18 2025-02-26 Boston Electrometallurgical Corp Systems and methods for molten oxide electrolysis

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351546A (en) * 1962-10-19 1967-11-07 Pechiney Prod Chimiques Sa High yield electrolytic fusion cell having anode suspension means
US3410786A (en) * 1965-04-09 1968-11-12 Pechiney Prod Chimiques Sa Superstructure for electrolytic cells
US3434955A (en) * 1965-05-26 1969-03-25 Pechiney Prod Chimiques Sa Lifting beam for electrolysis cells
US3484856A (en) * 1966-07-21 1969-12-16 Kaiser Aluminium Chem Corp Anode adjusting apparatus
US3575840A (en) * 1968-08-19 1971-04-20 Metallurg Consultants Inc Anode clamping system and anode clamps

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351546A (en) * 1962-10-19 1967-11-07 Pechiney Prod Chimiques Sa High yield electrolytic fusion cell having anode suspension means
US3410786A (en) * 1965-04-09 1968-11-12 Pechiney Prod Chimiques Sa Superstructure for electrolytic cells
US3434955A (en) * 1965-05-26 1969-03-25 Pechiney Prod Chimiques Sa Lifting beam for electrolysis cells
US3484856A (en) * 1966-07-21 1969-12-16 Kaiser Aluminium Chem Corp Anode adjusting apparatus
US3575840A (en) * 1968-08-19 1971-04-20 Metallurg Consultants Inc Anode clamping system and anode clamps

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888757A (en) * 1973-06-07 1975-06-10 Nl Kraanbouw Mij B V Anode rod clamping assembly
US4394242A (en) * 1980-01-28 1983-07-19 Adnovum Ag Clamp, tool, and electrolysis cell anode mount
US4773980A (en) * 1986-11-10 1988-09-27 Aluminium Pechiney Process and apparatus for sealing cathodic bars in a prestressed condition
AU610955B2 (en) * 1987-12-15 1991-05-30 B.V. Nederlandse Kraanbouw Maatschappij N K M Clamping device for clamping a vertical anode bar against a horizontal busbar of an electrolysis plant for producing aluminium
US5378338A (en) * 1992-08-20 1995-01-03 Aluminium Pechiney Superstructure for a very high power electrolysis cell for the production of aluminum
AU663400B2 (en) * 1992-08-20 1995-10-05 Aluminium Pechiney Superstructure for a very high power electrolysis cell for the production of aluminium
US5876585A (en) * 1996-05-29 1999-03-02 Schenk; Rodney J. Anode clamp
US20050194249A1 (en) * 2002-10-14 2005-09-08 Aluminum Pechiney Electrolytic cell leak limiter
US7678244B2 (en) 2002-10-14 2010-03-16 Aluminum Pechiney Electrolytic cell leak limiter
US20050266735A1 (en) * 2003-05-12 2005-12-01 Aluminum Pechiney Element for handling connectors for electrolytic cells which are used for the production of aluminum
US7344625B2 (en) 2003-05-12 2008-03-18 E.C.L. Element for handling connectors for electrolytic cells which are used for the production of aluminum
CN1788110B (zh) * 2003-05-12 2010-04-21 E.C.L.公司 用于生产铝的电解池的连接器的装卸机构
US20080142357A1 (en) * 2005-04-20 2008-06-19 E.C.L. Device and Method for Maintaining and Connecting an Anode Rod on an Anode Frame of an Aluminium Electrolytic Cell
US7887680B2 (en) * 2005-04-20 2011-02-15 E. C. L. Device and method for maintaining and connecting an anode rod on an anode frame of an aluminum electrolytic cell
CN100562607C (zh) * 2006-06-26 2009-11-25 高德金 小盒卡具夹紧装置
USD572673S1 (en) * 2006-07-13 2008-07-08 Ebara Corporation Anode shaft
US20110194916A1 (en) * 2008-10-16 2011-08-11 E.C.L. Pot tending machine for working on electrolysis cells for the production of aluminum by igneous electrolysis
US8647481B2 (en) 2008-10-16 2014-02-11 E.C.L. Pot tending machine for working on electrolysis cells for the production of aluminum by igneous electrolysis
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
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
WO2013159218A1 (fr) * 2012-04-24 2013-10-31 Rio Tinto Alcan International Limited Connecteur de prechauffage
FR3016895A1 (fr) * 2014-01-27 2015-07-31 Rio Tinto Alcan Int Ltd Dispositif de levage d'ensembles anodiques d'une cuve d'electrolyse.
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
US20220090280A1 (en) * 2019-03-14 2022-03-24 Rio Tinto Alcan International Limited Handling device to be used to convey an intervention tool on an electrolytic cell
US20220136120A1 (en) * 2019-03-14 2022-05-05 Rio Tinto Alcan International Limited Intervention tool for the operation of an electrolytic cell
US12043913B2 (en) * 2019-03-14 2024-07-23 Rio Tinto Alcan International Limited Handling device to be used to convey an intervention tool on an electrolytic cell
US12065752B2 (en) * 2019-03-14 2024-08-20 Rio Tinto Alcan International Limited Intervention tool for the operation of an electrolytic cell

Also Published As

Publication number Publication date
NO125104B (fr) 1972-07-17
NL7005251A (fr) 1970-10-16
JPS493721B1 (fr) 1974-01-28
DE2017654A1 (de) 1970-11-05
SU559659A3 (ru) 1977-05-25
NL165512B (nl) 1980-11-17
RO61350A2 (fr) 1976-09-20
ES378497A1 (es) 1973-02-01
DE2017654B2 (de) 1972-01-27
CH510740A (fr) 1971-07-31
PL71020B1 (fr) 1974-04-30
GB1287065A (en) 1972-08-31
YU95770A (en) 1977-12-31
BE748870A (fr) 1970-10-13
NL165512C (nl) 1981-04-15
FR2039543A5 (fr) 1971-01-15

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