US3702815A - Cathode casing of electrolyzer for producing aluminium - Google Patents

Cathode casing of electrolyzer for producing aluminium Download PDF

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Publication number
US3702815A
US3702815A US136524A US3702815DA US3702815A US 3702815 A US3702815 A US 3702815A US 136524 A US136524 A US 136524A US 3702815D A US3702815D A US 3702815DA US 3702815 A US3702815 A US 3702815A
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US
United States
Prior art keywords
casing
beams
electrolyzer
cathode
cathode casing
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
US136524A
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English (en)
Inventor
Vladimir Pavlovich Nikiforov
Vasily Nikolaevich Zaitsev
Viktor Stepanovich Khomyakov
Ilia Genrikhovich Kil
Igor Kirillovich Tsybukov
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.)
VNI PI ALJUMINIEVOI MAGNIEVOI
VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INST ALJUMINIEVOI MAGNIEVOI I ELEKTRODNOI PROMYSHLENNOSTI
Original Assignee
VNI PI ALJUMINIEVOI MAGNIEVOI
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.)
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Publication of US3702815A publication Critical patent/US3702815A/en
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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

Definitions

  • a cathode casing of an electrolyzer for producing aluminium which casing consists of a box structure having external horizontal beams disposed along transverse sides and bottom of the box structure and having vertical beams disposed along the longitudinal sides thereof. The vertical beams are hinged with the bottom of the box structure, while the lower ends of these beams are interconnected in pairs through spacer members.
  • the present invention relates to improvement in the field of production of aluminium from alumina and, more particularly, the invention relates to cathode casings of electrolyzers for producing aluminium.
  • the present invention can be most effectively used for producing aluminium by means of electrolysis. (It can be used, however, for producing also other nonferrous metals.
  • a cathode casing having a lining with a carbon base is one of the most important components of the electrolyzer for producing aluminium, and determines the life of the electrolyzer. It is well known that the carbon base of the casing lining expands not only due to a high temperature also considerably due to the impregnation of the carbon blocks by fluoric salts. The expansion of the carbon blocks results in causing considerable forces acting on the walls of the cathode casing.
  • cathode casings for electrolyzers for producing aluminium made in the form of a box which is mounted by means of beams on the supporting columns of the foundation and having external horizontal beams disposed along the transverse sides and bottom and having vertical beams disposed along the longitudinal sides.
  • the opposite vertical beams are interconnected in pairs at their medium section by steel bars extending under the bottom of the box.
  • the lower ends of these beams are secured to sockets provided in the foundation and are lined by electroinsulating plates.
  • An object of the present invention is to eliminate the above mentioned disadvantages.
  • the main object of the invention is to provide a cathode casing having a long life and requiring a minimum of materials for its manufacture and being suitable for application in high-power electrolyzers.
  • This invention consists in that the cathode casing of an electrolyzer is made in the form of a box having external horizontal beams disposed along the transverse sides and bottom and having vertical beams disposed along the longitudinal sides, and according to the invention, the bottom has sockets whose number is equal to the number of vertical beams. Extended through these sockets are pins with spherical nuts making a hinge joint of the bottom with the vertical beams the lower ends of which are interconnected in pairs through spacer members.
  • Such a construction provides for a longer life and minimum consumption of materials for manufacturing the cathode casing and also allows this casing to be used in high-power electrolyzers.
  • the longitudinal axes of the sockets are located in the bottom plane to prevent the appearance of bending moment on the casing bottom due to the action of the expanding forces.
  • the spacer members of the vertical beams of the cathode casing are made of reinforced concrete to save metal in making these members and this is very advantageous in the process of mass production of such beams.
  • FIG. 1 is a front view of the casing according to the invention, partly in section;
  • FIG. 2 is a plan view of the same
  • FIG. 3 is a sectional view taken along the line III-III in FIG. 1;
  • FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2.
  • the cathode casing consists of a rectangular box 1 (FIGS. 1 and 2) welded of sheet steel, the longitudinal sides of the box being provided with angle bars 2 providing the required rigidity for the longitudinal sides of the casing within the span between the vertical beams 3.
  • the transverse sides of the box are strengthened by rigid beams 4 covered with the cover plates 5. In this case the transverse sides operate as beams loosely laying on two supports and uniformly loaded by a distributed load. Such a manner of operation of the transverse sides is provided by the absence of rigid members in the angles of the casing.
  • the rigidity of the casing bottom is provided by flanged beams 6 through which the casing bears upon foundation structures.
  • sockets 7 Provided in the bottom of the casing are sockets 7 (FIGS.
  • the lower portions of the vertical beams have pockets into which are placed horizontal beams 10 made of reinforced concrete and serving as spacer members.
  • windows 11 FOG. 1
  • the pins 8 through the bottom connect the vertical beams 3 in pairs, the reinforced concrete beams 10 being located between the lower ends of these beams.
  • the reinforced concrete beams (spacer members) operate as compression elements, while the pins operate as expansion elements.
  • the bottom taking the load makes it possible to eliminate the long bars used in the known cathode casings, which bars have considerable deformation in an elastic stage, thus reducing the rigidity of the casing.
  • Spherical support faces are provided on the nuts and sockets for self-adjustment of each pin, thus eliminating the possibility of bending the pins during the deformation of the box.
  • a cathode casing of an electrolyzer for producing aluminum which casing consists of a box structure having transverse and longitudinal sides; a bottom; horizontal beams disposed along the transverse side and bottom; vertical beams disposed along said longitudinal sides to extend below the level of said bottom, said bottom, along longer sides thereof, having sockets the number of which is equal to the number of said vertical beams; pins extending through said sockets and equipped with spherically seated nuts providing hinged connection of said bottom References Cited UNITED STATES PATENTS 2,846,3 88 8/ 1958 Morel 204-243 R 2,861,036 11/ 195 8 Simon-Suisse 204-243 R 3,421,995 1/ 1969 Morel et al 204-243 R X 3,494,851 2/ 1970 Cauvin, Ir 204243 R JOHN H. MACK, Primary Examiner D. R. VALENTINE, Assistant Examiner US. Cl. X.R. 204286

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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)
  • Prevention Of Electric Corrosion (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US136524A 1970-08-19 1971-04-22 Cathode casing of electrolyzer for producing aluminium Expired - Lifetime US3702815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU7001461601A SU328754A1 (ru) 1970-08-19 1970-08-19 Катодный кожух алюминиевого электролизера

Publications (1)

Publication Number Publication Date
US3702815A true US3702815A (en) 1972-11-14

Family

ID=20455483

Family Applications (1)

Application Number Title Priority Date Filing Date
US136524A Expired - Lifetime US3702815A (en) 1970-08-19 1971-04-22 Cathode casing of electrolyzer for producing aluminium

Country Status (6)

Country Link
US (1) US3702815A (ru)
DE (1) DE2122246C3 (ru)
FR (1) FR2102348B1 (ru)
NO (1) NO127507B (ru)
SU (1) SU328754A1 (ru)
TR (1) TR19654A (ru)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087345A (en) * 1977-07-19 1978-05-02 Ardal Og Sunndal Verk A.S. Potshell for electrolytic aluminum reduction cell
US4421625A (en) * 1981-05-20 1983-12-20 Swiss Aluminum Ltd. Lower part of a fused salt electrolytic cell
US4556468A (en) * 1984-09-26 1985-12-03 Aluminum Company Of America Electrolytic cell
US6358393B1 (en) * 1997-05-23 2002-03-19 Moltech Invent S.A. Aluminum production cell and cathode
US10889906B2 (en) 2014-11-21 2021-01-12 Hatch Ltd. Low-profile aluminum cell potshell and method for increasing the production capacity of an aluminum cell potline

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087345A (en) * 1977-07-19 1978-05-02 Ardal Og Sunndal Verk A.S. Potshell for electrolytic aluminum reduction cell
US4421625A (en) * 1981-05-20 1983-12-20 Swiss Aluminum Ltd. Lower part of a fused salt electrolytic cell
US4556468A (en) * 1984-09-26 1985-12-03 Aluminum Company Of America Electrolytic cell
US6358393B1 (en) * 1997-05-23 2002-03-19 Moltech Invent S.A. Aluminum production cell and cathode
US10889906B2 (en) 2014-11-21 2021-01-12 Hatch Ltd. Low-profile aluminum cell potshell and method for increasing the production capacity of an aluminum cell potline

Also Published As

Publication number Publication date
TR19654A (tr) 1979-09-17
NO127507B (ru) 1973-07-02
DE2122246B2 (de) 1973-11-29
FR2102348B1 (ru) 1974-05-31
SU328754A1 (ru) 1977-12-05
FR2102348A1 (ru) 1972-04-07
DE2122246A1 (de) 1972-02-24
DE2122246C3 (de) 1974-12-05

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