EP0470335A1 - Stromzuleiter für eine Elektrode - Google Patents

Stromzuleiter für eine Elektrode Download PDF

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Publication number
EP0470335A1
EP0470335A1 EP91107288A EP91107288A EP0470335A1 EP 0470335 A1 EP0470335 A1 EP 0470335A1 EP 91107288 A EP91107288 A EP 91107288A EP 91107288 A EP91107288 A EP 91107288A EP 0470335 A1 EP0470335 A1 EP 0470335A1
Authority
EP
European Patent Office
Prior art keywords
core
valve metal
electrode
opening
metal body
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.)
Ceased
Application number
EP91107288A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ferdinand Börner
Gerhard Klose
Karlheinz Lofink
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.)
De Nora Deutschland GmbH
Original Assignee
Heraeus Elektrochemie GmbH
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 Heraeus Elektrochemie GmbH filed Critical Heraeus Elektrochemie GmbH
Publication of EP0470335A1 publication Critical patent/EP0470335A1/de
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections

Definitions

  • the invention relates to a current feeder for an electrode of an electrochemical cell, which has a core made of an electrically highly conductive material, which is enveloped by a tubular valve metal body, the surface of the valve metal body facing away from the core being connected to the electrode and the core being one Has recess for receiving a contact pin.
  • an electrolysis device with cell spaces through which the electrolyte flows in which anodes are arranged as plate packs via current-carrying center bolts between two cathode plate packs and the mutually offset electrode plates each protrude into the counterpole plate columns, the center bolts consisting of a core made of highly conductive copper with a titanium casing.
  • the center bolts have contact tabs on their outer jacket, which are used to fasten the anode plates and are made of platinized titanium.
  • the copper core of the center bolt is provided with a hole into which a screw body provided for contacting is inserted.
  • the bond between copper and titanium can deteriorate over time, either due to the penetration of air and subsequent heating or else by heating by means of overcurrents or by means of heating when reactivating anodes and by aging processes; this results in an increase in the voltage drop.
  • predetermined voltage drop limits were exceeded, a relatively costly removal of the current lead from the active parts of the electrode was previously required.
  • the invention has for its object to provide an improvement in the current transfer between the core and sheathed conductor of a current feeder for anodes.
  • the metal bolt and the bore in the core have a cylindrical surface, the diameter of the metal bolt corresponding to that of the bore.
  • the metal bolt is fastened in the bore by means of a snug fit.
  • An advantage of the invention can be seen in the fact that an improvement in the current transfer between the core and the valve metal body both when constructing new current feeders and in electrodes which have already been fitted, i. H. repairs are also possible. Because of the large number of electrolysis cells used in large-scale electrolysis plants, as are common in practice, high energy savings can only be achieved with a slight reduction in the voltage drop per electrode.
  • FIG. 1 shows a current feeder partially shown in longitudinal section.
  • the current feeder is formed from a cylindrical core 1 made of copper, which is provided with an open, jacket-shaped valve metal body 2.
  • the valve metal body 2 is made of titanium and has welded-on contact tabs 3 made of titanium, which are used for connection to the anode plates (not shown here) and are connected to them electrically and mechanically, for example by means of screwing devices.
  • a thread 4 in the upper part of the current feeder, into which a screw body 5 made of electrically highly conductive material with a surface coating which is inert towards the electrolyte is inserted; the screw body 5 is used for the electrical connection of the power supply to the power supply system.
  • the flange 6 encompassing the current feeder in its upper region is used in connection with the flange 7 of the screw bolt to seal the threaded opening in the copper core.
  • the valve metal body 2 of the power supply line has openings 8 in the region of its two ends, through which cylindrical metal bolts 9 made of titanium are driven into bores 10 of the core 1.
  • the bolts 9 are in the fit of the bore 10, so that the entire outer surface of the bolts 9 is used for power transmission.
  • the outwardly directed ends of the bolts 9 are hermetically welded to the valve metal body 2 in the region of the openings 8. In this way, the current is conducted from the area of the core via the metal bolts 9 through the welding points in the area of the opening 8 to the valve metal body 2 and from there to the contact tabs 3 and to the electrodes.
  • the metal bolt 9 Before insertion, the metal bolt 9 has a slightly larger diameter than the bore 10 receiving it in the core 1.
  • the metal bolt 9 is hammered into the Bore 10 introduced and after countersinking the bolt 9 in the opening 8 of the valve metal jacket 2, a hermetically sealed weld connection is produced between the bolt 9 and the edge of the opening 8 by a welded connection.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Valve Housings (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP91107288A 1990-08-09 1991-05-06 Stromzuleiter für eine Elektrode Ceased EP0470335A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4025253 1990-08-09
DE4025253A DE4025253C2 (de) 1990-08-09 1990-08-09 Stromzuleiter für eine Elektrode

Publications (1)

Publication Number Publication Date
EP0470335A1 true EP0470335A1 (de) 1992-02-12

Family

ID=6411933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107288A Ceased EP0470335A1 (de) 1990-08-09 1991-05-06 Stromzuleiter für eine Elektrode

Country Status (6)

Country Link
EP (1) EP0470335A1 (ja)
JP (1) JPH04232290A (ja)
BR (1) BR9102967A (ja)
DE (1) DE4025253C2 (ja)
NO (1) NO912123L (ja)
PL (1) PL291354A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10139799B4 (de) * 2001-08-14 2005-06-30 Deutsche Titan Gmbh Kollektorplattensatz für Brennstoff- oder andere elektrochemische Zellen sowie Verfahren zur Herstellung solcher Kollektorplatten

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218941A1 (ja) * 1973-02-23 1974-09-20 Rhone Progil
EP0089475A1 (de) * 1982-03-12 1983-09-28 Conradty GmbH & Co. Metallelektroden KG Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940328A (en) * 1974-04-11 1976-02-24 Electronor Corporation Reconstructed or repaired electrode structure
DE3011643A1 (de) * 1980-03-26 1981-10-01 Metallgesellschaft Ag, 6000 Frankfurt Elektrolysezelle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218941A1 (ja) * 1973-02-23 1974-09-20 Rhone Progil
EP0089475A1 (de) * 1982-03-12 1983-09-28 Conradty GmbH & Co. Metallelektroden KG Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden

Also Published As

Publication number Publication date
JPH04232290A (ja) 1992-08-20
PL291354A1 (en) 1992-02-10
BR9102967A (pt) 1992-04-28
NO912123D0 (no) 1991-06-03
DE4025253A1 (de) 1992-02-20
NO912123L (no) 1992-02-10
DE4025253C2 (de) 1994-06-01

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