GB1312378A - Multicell furnaces for the electrolytic production of aluminium - Google Patents

Multicell furnaces for the electrolytic production of aluminium

Info

Publication number
GB1312378A
GB1312378A GB3151370A GB3151370A GB1312378A GB 1312378 A GB1312378 A GB 1312378A GB 3151370 A GB3151370 A GB 3151370A GB 3151370 A GB3151370 A GB 3151370A GB 1312378 A GB1312378 A GB 1312378A
Authority
GB
United Kingdom
Prior art keywords
cathode
aluminium
pit
furnace
june
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
Application number
GB3151370A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Edison SpA
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 Montedison SpA, Montecatini Edison SpA filed Critical Montedison SpA
Publication of GB1312378A publication Critical patent/GB1312378A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • 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)

Abstract

1312378 Electrolytic furnaces MONTECATINI EDISON SpA and G DE VARDA 30 June 1970 [30 June 1969] 31513/70 Heading H5H To prevent freezing of the bath 6 of a multicell electrolytic aluminium furnace a cathode 3 extends into the aluminium collecting pit 2 in the furnace bottom so as to provide good thermal and electrical conductivity between the cathode 3 and the vat bottom through aluminium collecting in the pit 2. As shown the cathode 3 is provided centrally in a furnace with a stepped bottom between terminal anodes 8 and bipolar electrodes 5. The distance between the end of cathode 3 and pit bottom 9 is such that even immediately after tapping the residual aluminium engages the cathode. The cathode being of carbon is a good thermal conductor and therefore heats the aluminium in pit 2. If the lower layers of the bath 6 are subjected to cooling during electrode renewal, furnace starting or current interruption, the heating of cathode 3 is increased by disconnecting some of the iron current supply bars 10 by means of switches 11 from the cathode, so that the resistance of the iron-carbon interface increases and the cathode 3 and hence the aluminium in pit 2 is heated more.
GB3151370A 1969-06-30 1970-06-30 Multicell furnaces for the electrolytic production of aluminium Expired GB1312378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1896269 1969-06-30

Publications (1)

Publication Number Publication Date
GB1312378A true GB1312378A (en) 1973-04-04

Family

ID=11153685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3151370A Expired GB1312378A (en) 1969-06-30 1970-06-30 Multicell furnaces for the electrolytic production of aluminium

Country Status (12)

Country Link
US (1) US3730859A (en)
JP (1) JPS5020936B1 (en)
AT (1) AT295874B (en)
CA (1) CA931910A (en)
DE (1) DE2032112A1 (en)
ES (1) ES381239A1 (en)
FR (1) FR2049201B1 (en)
GB (1) GB1312378A (en)
NL (1) NL7009351A (en)
NO (1) NO125356B (en)
PL (1) PL80709B1 (en)
SE (1) SE365823B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021317A (en) * 1976-05-10 1977-05-03 Aluminum Company Of America Method of operating an electrolytic cell
US4133728A (en) * 1978-01-26 1979-01-09 E. I. Du Pont De Nemours And Company Electrolytic cell with switching means
US4664760A (en) * 1983-04-26 1987-05-12 Aluminum Company Of America Electrolytic cell and method of electrolysis using supported electrodes
US4622111A (en) * 1983-04-26 1986-11-11 Aluminum Company Of America Apparatus and method for electrolysis and inclined electrodes
US4596637A (en) * 1983-04-26 1986-06-24 Aluminum Company Of America Apparatus and method for electrolysis and float
US4504366A (en) * 1983-04-26 1985-03-12 Aluminum Company Of America Support member and electrolytic method
JPS61186489A (en) * 1985-02-13 1986-08-20 Hiroshi Ishizuka Device for electrolyzing molten chloride of alkali metal or alkaline earth metal
US4865701A (en) * 1988-08-31 1989-09-12 Beck Theodore R Electrolytic reduction of alumina

Also Published As

Publication number Publication date
SE365823B (en) 1974-04-01
NL7009351A (en) 1971-01-04
FR2049201B1 (en) 1974-03-01
JPS5020936B1 (en) 1975-07-18
DE2032112A1 (en) 1971-03-25
CA931910A (en) 1973-08-14
PL80709B1 (en) 1975-08-30
US3730859A (en) 1973-05-01
ES381239A1 (en) 1973-04-16
NO125356B (en) 1972-08-28
AT295874B (en) 1972-01-25
FR2049201A1 (en) 1971-03-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees