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WO2003031692A2 - Cathode d'electrolyse - Google Patents

Cathode d'electrolyse Download PDF

Info

Publication number
WO2003031692A2
WO2003031692A2 PCT/DE2002/003685 DE0203685W WO03031692A2 WO 2003031692 A2 WO2003031692 A2 WO 2003031692A2 DE 0203685 W DE0203685 W DE 0203685W WO 03031692 A2 WO03031692 A2 WO 03031692A2
Authority
WO
WIPO (PCT)
Prior art keywords
electrolysis
cathode
cross member
cathode according
electrolysis cathode
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
PCT/DE2002/003685
Other languages
German (de)
English (en)
Other versions
WO2003031692A3 (fr
Inventor
Jürgen GOLDENBAUM
Joachim Lemke
Christian MÖSCHEL
Ralf Nestel
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.)
Aurubis AG
Original Assignee
Norddeutsche Affinerie 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
Application filed by Norddeutsche Affinerie AG filed Critical Norddeutsche Affinerie AG
Priority to AU2002339333A priority Critical patent/AU2002339333B2/en
Publication of WO2003031692A2 publication Critical patent/WO2003031692A2/fr
Publication of WO2003031692A3 publication Critical patent/WO2003031692A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof

Definitions

  • the invention relates to an electrolysis cathode which can be connected to a power source together with at least one anode in a galvanic bath for carrying out galvanic electrolysis and which consists of a cross member which can be arranged above the galvanic bath for electrical connection to at least one supply rail and which can be immersed in the galvanic bath
  • Cathode sheet is made of metal.
  • cathodes can be used, for example, in the production of electrolyte copper.
  • the anodes consist of impure cast copper plates, which are dissolved in the electrolyte during the electrolysis and whose copper is then deposited as pure copper on the stainless steel plates. The contaminants mainly accumulate as soil sludge in the electrolysis bath.
  • the cross member of the cathodes typically consists of a copper-coated support rod in order to ensure a low contact resistance between the cross members and the busbars used for the electrical supply.
  • a typical temperature of the galvanic bath when copper electrolysis is carried out is 40 ° Celsius to 80 ° Celsius.
  • An electrolysis bath in such a temperature range is also used when performing other electrolytic metal deposition processes.
  • the processing of the cathodes to separate the galvanically deposited material is typically carried out at room temperature.
  • temperature differences occur with regard to the material temperature of the cathodes. These temperature differences cause the cathode plates to warp within the electrolytic bath, even if the original one had an exactly flat plate construction.
  • the aim is to arrange the cathodes and the electrodes as parallel as possible with the same spacing relative to one another, since if the distance to be covered by the electrolysis current within the bath is too great, a higher electrical resistance with correspondingly higher electrical losses occurs and with a too low one Distance a short circuit between the electrodes and the cathodes can be caused.
  • the object of the present invention is to construct an electrolysis cathode of the type mentioned in the introduction in such a way that improved properties are provided when exposed to different temperatures.
  • the cathode plate is formed with a rolling direction which is substantially parallel to a longitudinal axis of the cross member.
  • a rigid connection of the cathode plate to the crossmember is made such that the cathode plate is fixed in the area with the highest probability of deformation.
  • a particularly robust choice of materials is that the cathode sheet is made of stainless steel.
  • a typical application is that it is intended for use in the area of copper electrolysis.
  • the cross member at least in regions consist of copper.
  • the cross member is covered with copper at least in some areas.
  • the cathode sheet is designed as an essentially flat plate.
  • Undesired contacts between the cathode and a metallic wall of the electrolysis bath can be avoided by providing the cathode sheet with an insulating rail in the area of at least part of at least one side edge.
  • the cathode sheet has at least one recess in the region of its extension facing the cross member.
  • cross member has an I-profile transverse to the longitudinal axis. To enable simple contacting with busbars running laterally next to and above the electrolysis bath, this is supported in that the cross member is provided with laterally projecting end segments.
  • a particularly low electrical contact resistance is achieved in that the end segments have at least one taper in an intended contact area.
  • a construction with low weight and at the same time high stability can be achieved in that the cross member is hollow at least in some areas.
  • the cross member have an outer wall that is provided with an inner wall and an outer wall.
  • a low electrical contact resistance can be achieved in particular in that the outer wall is made of copper at least in some areas.
  • a stable mechanical fastening of the cathode plate with a low electrical contact resistance is provided in that the cross member is provided in the area of its extension facing the cathode plate with two fastening legs, between which a fastening region of the cathode plate is arranged.
  • the electrical contact resistance can in particular also be reduced in that the cathode sheet is not connected to the fastening legs by an explosion weld.
  • Exemplary embodiments of the invention are shown schematically in the drawing. Show it:
  • 1 is a side view of an electrolysis cathode
  • FIG. 2 shows a side view according to viewing direction II in FIG. 1
  • FIG. 3 is an enlarged view of detail III in Fig. 2,
  • FIG. 5 is a perspective view of the electrolysis cathode according to FIG. 1, and
  • Fig. 6 is a partial representation of a cross section through an electrolysis cathode with a modified cross member.
  • Fig. 1 shows an electrolysis cathode (1) which is provided with a cross member (2) and a cathode plate (3).
  • the cathode sheet (3) is made of stainless steel and is welded to the cross member (2).
  • the cross member (2) is preferably designed as a copper-coated support rod.
  • the cathode sheet (3) is provided with insulating rails (6, 7) in the area of side edges (4, 5).
  • the insulating rails (6, 7) can be designed as plastic strips.
  • the cathode sheet (3) has recesses through which fastening elements extend.
  • the cross member (2) projects over the insulating rails (6, 7) with end segments (8, 9). As a result, the electrolysis cathode (1) can be suspended in the region of an electrolysis bath, not shown.
  • the crossmember (2) is connected to the cathode sheet (3) in the region of a weld seam (10).
  • the electrolysis cathode (1) has two recesses (11, 12) below the cross member (2), through which holding devices of a transport device can be inserted.
  • the rolling direction (13) runs essentially parallel to a longitudinal axis (16) of the cross member (2).
  • FIG. 2 illustrates that the cross member (2) can be designed as an I-profile.
  • the insulating rails (6, 7) cover essentially the entire area of the side edges (4, 5).
  • FIG. 3 shows how the cathode plate (3) is connected to the cross member (2) via the weld seams (10).
  • Fig. 4 shows a cross section through one of the end segments (8, 9). It can be seen that a lower region of the end segments (8, 9) is designed as a taper (14). As a result, when the end segments (8, 9) rest on a busbar (15), a high contact pressure per unit area and thus a low contact resistance for an electric current is achieved.
  • FIG. 5 illustrates the structure of the electrolysis cathode (1) again through the perspective illustration.
  • the stable design of the cross member (2) and the lateral protrusion of the end segments (8, 9) of the cross member (2) can be seen.
  • Fig. 6 illustrates an embodiment with a modified cross member (2).
  • the crossbeam (2) is at least partially formed as a hollow beam, which at least laterally delimits an interior (18) with an outer wall (17) in the direction of the longitudinal axis (16).
  • the outer wall (17) consists of an inner wall (19) and an outer wall (20).
  • the inner wall (19) is made of stainless steel
  • the outer wall (20) is made of copper to ensure good electrical contact with the busbar (15).
  • the outer wall (17) spans an essentially rectangular cross section with rounded corner courses.
  • the cross member (20) is provided with two fastening legs (21, 22) which extend along part of the outer surfaces of the cathode sheet (3).
  • the cathode sheet (3) is between the fastening legs (21, 22) with an upper fastening area (23).
  • fastening legs (21, 22) which essentially span a U-shaped mounting profile, also in the area of solid cross members (2).
  • a connection of the cathode sheet (3) to the cross member (2) takes place in the embodiment according to FIG. 6 and in similar embodiments preferably in the area of the fastening legs (21, 22).
  • explosion welding has also proven to be advantageous, since different metals can thereby be connected to one another with very low electrical resistance.
  • this also makes it possible to connect a stainless steel cathode sheet (3) to fastening legs (21, 22) made of copper.

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)
  • Prevention Of Electric Corrosion (AREA)

Abstract

L'invention concerne une cathode d'électrolyse pouvant être raccordée à une source de courant avec au moins une anode dans un bain galvanique destiné à la mise en oeuvre d'une électrolyse galvanique. La cathode d'électrolyse selon l'invention est constituée d'un support transversal pouvant être disposé au dessus du bain galvanique de manière à être relié électriquement à au moins une ligne d'alimentation, et d'une cathode métallique pouvant être immergée dans le bain galvanique. La tôle de cathode est pourvue d'un sens de laminage essentiellement parallèle à un axe longitudinal du support transversal.
PCT/DE2002/003685 2001-10-02 2002-09-30 Cathode d'electrolyse Ceased WO2003031692A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002339333A AU2002339333B2 (en) 2001-10-02 2002-09-30 Electrolysis cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001148813 DE10148813A1 (de) 2001-10-02 2001-10-02 Elektrolysekathode
DE10148813.0 2001-10-02

Publications (2)

Publication Number Publication Date
WO2003031692A2 true WO2003031692A2 (fr) 2003-04-17
WO2003031692A3 WO2003031692A3 (fr) 2003-08-14

Family

ID=7701270

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/003685 Ceased WO2003031692A2 (fr) 2001-10-02 2002-09-30 Cathode d'electrolyse

Country Status (3)

Country Link
AU (1) AU2002339333B2 (fr)
DE (1) DE10148813A1 (fr)
WO (1) WO2003031692A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009051657A1 (de) * 2009-10-30 2011-05-05 Aurubis Ag Elektrolyseelektrode sowie Verfahren zur Herstellung einer Elektrolyseelektrode

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU506521B1 (en) * 1979-02-05 1980-01-10 M.I.M. Technology Marketing Limited Cathode with stainless steel - copper clad hanger bar
DE2935765C2 (de) * 1979-09-05 1982-01-21 Fried. Krupp Gmbh, 4300 Essen Halterung für die Stromschiene und die Elektroden an Elektrolyseeinheiten mit mehreren nebeneinander angeordneten Elektrolysezellen
JPH06136586A (ja) * 1992-10-28 1994-05-17 Sumitomo Metal Mining Co Ltd 電解用陰極板
DE4238739C2 (de) * 1992-11-17 2000-04-20 Thyssen Nordseewerke Gmbh Kathode für die elektrolytische Raffination von Nichteisenmetallen, insbesondere Kupfer
DE4241485C1 (de) * 1992-12-09 1994-03-17 Siemens Ag Kathode zum galvanischen Abscheiden von Kupfer und Verfahren zu ihrer Herstellung
DE10003012A1 (de) * 2000-01-25 2001-07-26 Km Europa Metal Ag Kathodenanordnung

Also Published As

Publication number Publication date
DE10148813A1 (de) 2003-04-10
AU2002339333B2 (en) 2007-08-16
WO2003031692A3 (fr) 2003-08-14

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