US3219570A - Electrolytic cell for the production of aluminum - Google Patents

Electrolytic cell for the production of aluminum Download PDF

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Publication number
US3219570A
US3219570A US159226A US15922661A US3219570A US 3219570 A US3219570 A US 3219570A US 159226 A US159226 A US 159226A US 15922661 A US15922661 A US 15922661A US 3219570 A US3219570 A US 3219570A
Authority
US
United States
Prior art keywords
frame
cell
anodes
contact bars
supported
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
US159226A
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English (en)
Inventor
Wunderli Heinrich
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
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
Priority claimed from CH1437160A external-priority patent/CH383633A/de
Application filed by Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Priority claimed from CH787863A external-priority patent/CH416127A/de
Application granted granted Critical
Publication of US3219570A publication Critical patent/US3219570A/en
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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • 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
    • 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 present invention relates to an electrolytic cell for producing aluminum.
  • Electrolytic cells for the production of aluminum in fused baths usually comprise a cat hodic pot in which a fused fluoride bath in maintained and one or more carbon anodes carried by upright rods arranged in rows from one end of the pot to the other. Whether the anodes are prebaked or self-baking, they are burnt away as the production of aluminum proceeds and they are therefore lowered from time to time.
  • the anode carrying rods are vertically movable endwise and usually are aflixed to a horizontal current conductor which is carried by lifting mechanisms mounted on separate supporting frames spanning the pot transversly.
  • One object of the present invention is to provide a new and improved electrolytic cell for producing aluminum which avoids the drawbacks of the prior art described.
  • a fixed current-conducting frame spans the pot from one end to the other.
  • Upright anode rods are arranged in rows and the anode rods in each row are carried by a contact bar parallel to and outside the fixed frame.
  • the contact bars are electrically connected to the fixed frame by flexible conductors and are vertically moved by mechanisms mounted on the frame.
  • the fixed current-conducting frame comprises vertical conductors at opposite ends of the cell' and a horizontal conductor extending between them and advantageously comprising two horizontal beams on opposite sides of the vertical conductors and extending from one l vertical conductor to the other.
  • These vertical conductors are in effect the legs of the frame by which the anode rods are carried.
  • FIG. 1 shows the cell embodying the present invention partly in side elevation and partly in central vertical section
  • FIG. 2 is a plan view of the cell
  • FIG. 3 is an end elevation of the cell partly in section.
  • the cell comprises a pot 1 having a carbon lining 1a with a base through which cathode bars 3 extend, and prebaked carbon anodes 2 adapted to extend into the electrolytic bath.
  • the current flows from the carbon anodes 2 to the carbon lining 1a of the pot and thence to the cathode bars 3 which are joined by bus bars 4.
  • the electrolytic cell shown is one of a row of similar cells, the longitudinal axis of each cell being transverse to the center line of the row of cells.
  • each cell there is a fixed current-conducting frame comprising a vertical conductor 5 at each end mounted on a pedestal 8 and two beams 6 spanning the pot from one end to the other and welded to the outer faces of the vertical conductors.
  • the bus bars 4 joining the cathode bars 3 of one cell extend to the next cell and are there welded to the verticalI conductors 5.
  • the anodes 2 are arranged in pairs, and the pairs are themselves arranged in two rows extending from one end of the pot to the other.
  • the anodes 2 are thereby arranged into four parallel rows, two on each side of the longitudinal median line or axis of the cell.
  • Each pair of anodes 2 is carried by a support 17 on the lower end of an upright anode rod 9.
  • Each girder 10 and therefore the corresponding contact bar 7 is carried by two mechanisms 11 by which said girder and contact bar can be moved vertically.
  • These mechanisms 11 are supported by frameworks affixed tothe top of the fixed current-conducting frame.
  • Each of these frameworks comprises a cross-bar 16, vertical members 18 depending therefrom and secured thereto and cross-bars 19 affixed to said vertical members and to the upper surfaces of the beams 6.
  • 'Ihe mechanisms 11 are preferably in the form of screw jacks to raise and lower the contact bars 7 with the anode rods 9, and include driving motors 21, mounted on the fixed current-conducting frame near opposite ends -of the cell and connected to the jacks by suitable gear and shaft transmissions.
  • each motor 21 drives a pair of shafts 11a, each of which in turn drives a gear (not shown) in a casing 11b having a threaded engagement with a threaded spindle 11C secured to the corresponding girder 10 and Contact 7, so that as this gear rotates, it moves the spindle vertically and thereby moves the anode rods 9 with their supported anode 2 vertically in unison.
  • the fixed current-conducting frame is preferably composed of an aluminum-iron alloy containing from 1.8 to 2.0% iron, because this alloy can very easily be cast, is strong, and has a conductivity only a little less than that of pure aluminum.
  • the vertical conductors 5 forming part of this fixed frame may be sand-cast or chill-cast, but the beams 6 also constituting part of said frame are preferably simple sections produc-ed by continuous casting.
  • the anodes 2 are lowered into the melt by operation of the mechanisms 11. If .an individual anode 2 must be replaced by a new one, the clamp or other means by which the anode rod is fixed to the Contact bar 7 is released to enable what is left of the anode to be withdrawn.
  • auxiliary contact bars 13 are provided on both sides of the fixed frame. These auxiliary Contact bars 13 rest on cross-beams 14 affixed to the fixed frame and are electrically connected t-o the beams 6 by electrical connections 15. The auxiliary contact bars 13 resemble the contact bars 7 and are supported by iron girders 20 secured to the cross-beams 14.
  • the anode rods 9 are temporarily clamped to the auxiliary contact bars 13, so that they are supported by the bars 13 and girders 20, and disconnected from the contact bars 7.
  • the contact bars 7 can then be lifted by reverse lifting operation of the mechanisms 11, Without interrupting the current to the anodes 2 and while supporting the anodes, the rods 9 can once more be secured to said bars, so that the anodes can be lowered still further, after the rods are disconnected from the auxiliary contact bars 13.
  • the invention can also employ cells having self-baking anodes.
  • an electrolytic cell as described in claim 1, wherein the xed frame has end supports serving also as conductors, each of said supports being in the form of a single column-like upstanding member substantially in a central vertical longitudinal plane of the cell at each end of the cell, and ltwo horizontal beams on opposite sides of the supports secured thereto and extending from one support to the other longitudinally of the cell.
  • An electrolytic cell comprising means for releasably connecting said anode rods and said contact bars for Vertical movement in unison, and releasable means for temporarily supporting said anode rods while said contact bars are being raised and for supplying current to said anode rods independently of said contact bars and comprising a lixed auxiliary contact bar supported from .said iixed frame located beneath each of the movable contact bars and having an electrical connection to the iixed frame.
  • An electrolytic cell according to claim 1 said fixed frame being composed of an aluminum iron alloy containing from 1.8 to 2.0% iron.

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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)
US159226A 1960-12-23 1961-12-14 Electrolytic cell for the production of aluminum Expired - Lifetime US3219570A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1437160A CH383633A (de) 1960-12-23 1960-12-23 Elektrolysezelle zur Herstellung von Aluminium im Schmelzfluss
CH787863A CH416127A (de) 1963-06-25 1963-06-25 Elektrolysezelle zur Herstellung von Aluminium

Publications (1)

Publication Number Publication Date
US3219570A true US3219570A (en) 1965-11-23

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
US159226A Expired - Lifetime US3219570A (en) 1960-12-23 1961-12-14 Electrolytic cell for the production of aluminum
US373940A Expired - Lifetime US3245898A (en) 1960-12-23 1964-06-10 Electrolytic cell for the production of aluminum

Family Applications After (1)

Application Number Title Priority Date Filing Date
US373940A Expired - Lifetime US3245898A (en) 1960-12-23 1964-06-10 Electrolytic cell for the production of aluminum

Country Status (4)

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US (2) US3219570A (forum.php)
DE (2) DE1163558B (forum.php)
GB (2) GB922290A (forum.php)
NL (1) NL6406761A (forum.php)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434955A (en) * 1965-05-26 1969-03-25 Pechiney Prod Chimiques Sa Lifting beam for electrolysis cells
US3531392A (en) * 1965-11-11 1970-09-29 Knapsack Ag Arrangement for measuring the current intensity at the single electrodes of electrolytic cells
US4414070A (en) * 1982-02-12 1983-11-08 Alcan International Limited Anode positioning system
US4465578A (en) * 1981-12-08 1984-08-14 Aluminium Pechiney Apparatus for the precise adjustment of the anode plane of an electrolysis cell used in the production of aluminum
US5288383A (en) * 1989-03-10 1994-02-22 VAW Aluminum Aktiengesellschaft Method and apparatus for adjusting the distance between the poles of electrolysis cells

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE638855A (forum.php) * 1962-10-19
DE1533456B1 (de) * 1965-04-09 1969-10-23 Pechiney Prod Chimiques Sa Anodentraggeruest fuer eine Schmelzflusselektrolysezelle
US3404081A (en) * 1965-08-09 1968-10-01 Kaiser Aluminium Chem Corp Electrolytic reduction cell having detachably supported electrodes
US4210513A (en) * 1978-11-02 1980-07-01 Aluminum Company Of America Pneumatic anode positioning system
FR2582677B1 (fr) * 1985-05-30 1990-08-17 Pechiney Aluminium Superstructure de cuve d'electrolyse avec portique intermediaire, pour la production d'aluminium
US5549799A (en) * 1992-12-31 1996-08-27 Harnischfeger Corporation Hoist apparatus for positioning anode in smelting furnace
USD680879S1 (en) 2010-11-03 2013-04-30 S.C. Johnson & Son, Inc. Dispenser
USD653106S1 (en) 2010-11-18 2012-01-31 S.C. Johnson & Son, Inc. Container shroud
GB2543472A (en) * 2014-12-15 2017-04-26 Dubai Aluminium Pjsc Anode rod tracking system for electrolysis plants
CN112853405B (zh) * 2021-01-11 2022-05-17 北京有研粉末新材料研究院有限公司 电解制粉装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857545A (en) * 1952-08-13 1958-10-21 Elektrokemisk As Arrangement of the vertical contact rods of selfbaking anodes in furnace for electrolytic recovery of aluminium
US2930746A (en) * 1957-01-10 1960-03-29 Robert J Cooper Control of reduction pot lines
US2939829A (en) * 1958-01-15 1960-06-07 Kaiser Aluminium Chem Corp Electrolytic cell
US2958641A (en) * 1958-05-20 1960-11-01 Reynolds Metals Co Anode for alumina reduction cells
CA607981A (en) * 1960-11-01 Schmitt Hans Method and apparatus for refining aluminum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA607981A (en) * 1960-11-01 Schmitt Hans Method and apparatus for refining aluminum
US2857545A (en) * 1952-08-13 1958-10-21 Elektrokemisk As Arrangement of the vertical contact rods of selfbaking anodes in furnace for electrolytic recovery of aluminium
US2930746A (en) * 1957-01-10 1960-03-29 Robert J Cooper Control of reduction pot lines
US2939829A (en) * 1958-01-15 1960-06-07 Kaiser Aluminium Chem Corp Electrolytic cell
US2958641A (en) * 1958-05-20 1960-11-01 Reynolds Metals Co Anode for alumina reduction cells

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434955A (en) * 1965-05-26 1969-03-25 Pechiney Prod Chimiques Sa Lifting beam for electrolysis cells
US3531392A (en) * 1965-11-11 1970-09-29 Knapsack Ag Arrangement for measuring the current intensity at the single electrodes of electrolytic cells
US4465578A (en) * 1981-12-08 1984-08-14 Aluminium Pechiney Apparatus for the precise adjustment of the anode plane of an electrolysis cell used in the production of aluminum
US4414070A (en) * 1982-02-12 1983-11-08 Alcan International Limited Anode positioning system
US5288383A (en) * 1989-03-10 1994-02-22 VAW Aluminum Aktiengesellschaft Method and apparatus for adjusting the distance between the poles of electrolysis cells

Also Published As

Publication number Publication date
US3245898A (en) 1966-04-12
GB1016920A (en) 1966-01-12
NL6406761A (forum.php) 1964-12-28
GB922290A (en) 1963-03-27
DE1163558B (de) 1964-02-20
DE1188300B (de) 1965-03-04

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