US2100927A - Continuous anode for electrolytic cells for the production of aluminum - Google Patents

Continuous anode for electrolytic cells for the production of aluminum Download PDF

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Publication number
US2100927A
US2100927A US735639A US73563934A US2100927A US 2100927 A US2100927 A US 2100927A US 735639 A US735639 A US 735639A US 73563934 A US73563934 A US 73563934A US 2100927 A US2100927 A US 2100927A
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US
United States
Prior art keywords
anode
cell
production
aluminum
electrolytic cells
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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
US735639A
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English (en)
Inventor
Trematore Raffaele
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.)
Det Norske Aktieselskap for Elektrokemisk Industri
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Det Norske Aktieselskap for Elektrokemisk Industri
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Publication of US2100927A publication Critical patent/US2100927A/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
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon

Definitions

  • the present invention consists fundamentally in substituting for these connections threaded bars or tubes (hereinafter called bars) arranged inside the electrode, in such a way as to pass lengthwise through the self-baking mass without touching the external casing.
  • the paste as it bakes, assumes the shape of a female screw at the surface of contact with the current carriers, which can therefore be unscrewed progressively from the anode upwards as the need arises.
  • the same tubes or bars may then also serve to suspend the anode itself.
  • Figure 1 shows, in longitudinal section ll of Fig. 2), an illustrative example of the device claimed;
  • Figure 2 shows, on the left, the same device as seen from above and. on the right, the same device in transverse section (22 of Fig. l)
  • 3 shows the casing of the electrode.
  • i represents the self-baking paste.
  • 5 the current-carrying bars which, in the example given, are four in number.
  • the cell is provided with a cover 6 made of heat-insulating materials, composed of remov able sectors, on which a hopper l is arranged.
  • This hopper surrounds the smooth surface of the electrode and serves to feed the alumina. In this Way, the latter is preheated at the expense of the heat which is developed during the baking of the electrodic paste.
  • the material is discharged from the cell in such a way as to avoid corrosion of the electrode.
  • Devices for stirring the bath are arranged on the cover 6 and comprise horizontal arms 8 to which a vertical movement may be given by means of levers 9; the device shown in Figure 1 may be replaced by another device such as would cell, when the anode has to be lowered as it is.
  • Tube ID for the elimination of the gases and dust produced may also be arranged on the cover of the cell.
  • the cell is round and has one anode only.
  • the devices described may, however, also be applied to other forms of cells and if desired, furnished with more than one anode.
  • the fundamental advantage of the invention is derived from the fact that the external casing of the anode is perfectly smooth and without holes or protuberances, in contrast to the types of cell used so far. This characteristic allows a more rational form to be given to the cell, facilitates the elimination of the gases freed (the cell may easily be covered) and offers the possibility of recovering the heat through the hopper 1. Moreover, the use of this device notably simplifies the suspension of the anode and diminishes the fall in tension inside the latter by reason of the minimum distance which can be maintained between the current carrier and the lower extremity of the electrodic paste. The operation of regulating the current carriers may be rendered continuous if a small motor is applied to effect their movement.
  • the current carrying bars 5 are preferably set so that their lower ends are some distance back from the bottom of the electrode body 4 to protect them against melting and contaminating the bath.
  • An anode for an electrolytic cell for the production of aluminum made from carbon paste that is baked during the operation in the cell, provided with current carrying threaded bars extending lengthwise through the electrode and being in contact with the baked as well as the unbaked part of said electrode, said bars being unscrewable upwards as and when it becomes necessary in order to avoid contact between them and the bath as the anode is consumed.
  • An anode for an electrolytic cell for the production of aluminum made from carbon paste, that is baked during the operation in the cell, provided with at least four current carrying threaded bars extending lengthwise through the electrode and being in contact with the baked as well as the unbaked part of said electrode, said bars being unscrewable upwards as and when it becomes necessary in order to avoid contact between them and the bath, as the anode is consumeda 3.
  • an anode composed of carbon paste that is baked during the operation of. the cell, whereby the lower part of said anode-is normally baked and the upper part unbaked, and current carrying threaded bars extending longitudinally through the unbaked part of said electrode into the baked part thereof and terminating above the level of the electrolyte in the cell, said bars being mounted so that they can be turned to withdraw the same upward in said anode as the lower end of the latter is consumed.

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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)
US735639A 1933-07-22 1934-07-17 Continuous anode for electrolytic cells for the production of aluminum Expired - Lifetime US2100927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT427855X 1933-07-22

Publications (1)

Publication Number Publication Date
US2100927A true US2100927A (en) 1937-11-30

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US735639A Expired - Lifetime US2100927A (en) 1933-07-22 1934-07-17 Continuous anode for electrolytic cells for the production of aluminum

Country Status (5)

Country Link
US (1) US2100927A (enrdf_load_stackoverflow)
BE (1) BE404321A (enrdf_load_stackoverflow)
FR (1) FR776109A (enrdf_load_stackoverflow)
GB (1) GB427855A (enrdf_load_stackoverflow)
SE (1) SE88408C1 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475452A (en) * 1948-05-05 1949-07-05 Elektrokemist As Method of readjusting the current supplying and supporting metal rods of continuous self-baking electrodes
US2526875A (en) * 1944-01-21 1950-10-24 Elektrokemisk As Method of collecting gases in aluminum furnaces
US2544285A (en) * 1944-03-15 1951-03-06 Kenneth E Stuart Electrolytic cell
US2564837A (en) * 1946-07-16 1951-08-21 Ferrand Louis Cell for the electrolytic production of aluminum
US2631972A (en) * 1948-06-28 1953-03-17 Bruno B A Luzzatto Process and apparatus for the electrolytic production of materials
US2680141A (en) * 1951-03-21 1954-06-01 Elektrokemisk As Method of readjusting the metal supporting rods of continuous self-baking electrodes
CN104342720A (zh) * 2014-10-27 2015-02-11 南瑞（武汉）电气设备与工程能效测评中心 一种特大型连续生产节能环保铝电解槽

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526875A (en) * 1944-01-21 1950-10-24 Elektrokemisk As Method of collecting gases in aluminum furnaces
US2544285A (en) * 1944-03-15 1951-03-06 Kenneth E Stuart Electrolytic cell
US2564837A (en) * 1946-07-16 1951-08-21 Ferrand Louis Cell for the electrolytic production of aluminum
US2475452A (en) * 1948-05-05 1949-07-05 Elektrokemist As Method of readjusting the current supplying and supporting metal rods of continuous self-baking electrodes
US2631972A (en) * 1948-06-28 1953-03-17 Bruno B A Luzzatto Process and apparatus for the electrolytic production of materials
US2680141A (en) * 1951-03-21 1954-06-01 Elektrokemisk As Method of readjusting the metal supporting rods of continuous self-baking electrodes
CN104342720A (zh) * 2014-10-27 2015-02-11 南瑞（武汉）电气设备与工程能效测评中心 一种特大型连续生产节能环保铝电解槽
CN104342720B (zh) * 2014-10-27 2016-09-28 南瑞（武汉）电气设备与工程能效测评中心 一种特大型连续生产节能环保铝电解槽

Also Published As

Publication number Publication date
SE88408C1 (enrdf_load_stackoverflow) 1937-02-02
BE404321A (enrdf_load_stackoverflow)
GB427855A (en) 1935-05-01
FR776109A (fr) 1935-01-17

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