EP0175395B1 - Dispositif de suspension pour l'amenée de courant aux cathodes - Google Patents

Dispositif de suspension pour l'amenée de courant aux cathodes Download PDF

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Publication number
EP0175395B1
EP0175395B1 EP85200855A EP85200855A EP0175395B1 EP 0175395 B1 EP0175395 B1 EP 0175395B1 EP 85200855 A EP85200855 A EP 85200855A EP 85200855 A EP85200855 A EP 85200855A EP 0175395 B1 EP0175395 B1 EP 0175395B1
Authority
EP
European Patent Office
Prior art keywords
sheath
copper
current
cathode
section
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
EP85200855A
Other languages
German (de)
English (en)
Other versions
EP0175395A1 (fr
Inventor
Adalbert Bartsch
Gerhard Berndt
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 AT85200855T priority Critical patent/ATE30605T1/de
Publication of EP0175395A1 publication Critical patent/EP0175395A1/fr
Application granted granted Critical
Publication of EP0175395B1 publication Critical patent/EP0175395B1/fr
Expired 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
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/02—Electrodes; Connections thereof

Definitions

  • the invention relates to a current-carrying suspension device for cathodes, in particular cathodes for copper refining.
  • the copper carriers have been completely protected, for example in Winning electrolyses, up to the contact point (busbar support point) by a lead sheath, which consequently has to be soldered homogeneously and is therefore a generally uneconomical process for refining electrolyses.
  • a suspension rail from z. B. copper for permanent cathodes is known, which is coated with a valve metal by coextrusion. Titanium in particular serves as the metal jacket. The titanium sheath is removed from the ends of the mounting rail in the area of the contact points with the busbar. A permanent cathode sheet made of titanium is connected to the support rail along one edge by spot welding.
  • the use of titanium permanent cathodes of the previously known arrangement also has disadvantages.
  • the manufacturing process for the titanium-coated solid copper profiles by means of coextrusion is extremely complex, so that the use of such profiles remains limited to special applications in which the number of pieces is generally not too large. Furthermore, the process-effective plate surface undergoes significant passivation through oxidation processes.
  • a combination of a titanium-coated support rail made of copper with a cathode sheet made of corrosion-resistant stainless steel, which is desirable per se, is not possible because the materials cannot be welded. It has therefore been used in a known manner according to DE-OS-30 03 927 for the electrolytic refining of copper, a hanging rail made of stainless steel with a welded permanent cathode made of the same steel.
  • the hanging rail is equipped with a copper coating, and a copper coating is also provided in the area of the welding point of the cathode sheet. Electroplated copper coatings have proven to be insufficient. The thickness of the copper coating required goes far beyond the area of general galvanic copper plating ( ⁇ m range).
  • the covering thickness is 1.3 to 2.5 mm in order to avoid any noticeable loss of performance due to a drop in voltage and to take account of the corrosion removal.
  • Special complex systems must therefore be provided for the copper plating, which include the sandblasting, cleaning, etching, nickel plating and copper plating operations.
  • the invention has for its object to avoid the above-mentioned disadvantages of the known cathodes for electrolytic copper refining and to provide a suspension device with permanent cathode that can be manufactured easily and inexpensively and that has a high fatigue strength with good current transfer.
  • a current-carrying suspension device of the aforementioned type for cathodes with a metal-clad support rail made of copper and a permanent cathode sheet which is at least partially welded to a longitudinal edge and made of a material corresponding to the cladding, and at least one rail end along at least part of which is free from the cladding is designed in accordance with the invention in such a way that the carrier rail is a hollow copper profile and the sheathing is made of stainless steel, the sheathing being welded to the carrier rail in a pore and diffusion-tight manner and the permanent cathode made of stainless steel being connected to the sheathing by an interrupted weld seam.
  • the excellent electrical conductivity of the copper is fully used and thus the lowest voltage drop in the supporting structure is guaranteed. Furthermore, a high degree of dimensional stability is ensured even with robust mechanical handling.
  • the copper hollow profile of the device according to the invention is expediently a copper tube. Generally it has a wall thickness of 4 to 6 mm with an outer diameter generally of 30 to 45 mm, depending on required final weight and dimensions of the production cathode.
  • a stainless steel jacket tube is positively attached to the copper tube. In the simplest case, this is done by pushing on a stainless steel tube with an inner diameter that is only slightly larger than the outer diameter of the copper tube.
  • a stainless steel tube is expediently used, which is slotted over its entire length. In this case, the inside diameter of the stainless steel tube can be equal to or smaller than the outside diameter of the copper tube.
  • both an excellent form fit is achieved and an additional possibility is created to bring about an improved and uniform current transfer from the current-carrying copper bar to the sheathing by welding the longitudinal slot, for example by inserting a welding bead.
  • the longitudinal slot is generally on the side facing away from the electrolyte.
  • the composite body can be manufactured according to the production method of longitudinally welded pipes.
  • the hollow copper profile such as copper pipe
  • the stainless steel sheet metal strip usually used there for pipe production is introduced within the rolling / welding section into the stainless steel sheet metal strip usually used there for pipe production.
  • the welding is carried out in the area of the remaining profile gap between the copper pipe and the stainless steel jacket.
  • the casing can also consist of a stainless steel sheet which is positively applied by known methods of non-cutting shaping.
  • the sheathing is recessed or notched at least at one end of the support rail, so that the copper material of the hollow profile is exposed and can be contacted with the copper busbar of the electrolysis cell.
  • the cut areas of the stainless steel jacket as well as all ends of the composite body are welded to the hollow copper profile in a pore and gas diffusion-tight manner. The tight seal between the hollow copper body and the stainless steel jacket prevents the diffusion of liquid and gas and ensures a perfectly defined current transfer across the weld cross-sections.
  • a composite body made of stainless steel-coated copper pipe is sufficient as a support rail with good mechanical stability and good electrical conductivity.
  • the composite hollow body of the invention is compression-molded.
  • the copper tube provided with a stainless steel jacket is deformed into a composite body with an elliptical or two parallel wall cross-section, the long axis of which lies in the plane of the cathode sheet.
  • all cross-sectional shapes in between are also suitable.
  • the elliptical / oval cross-section of the suspension device according to the invention provides the advantageous point contact at the power supply ends without a special manufacturing process and, due to the indifferent support on the power supply rail, leads to the vertical position of the cathode sheet which is important for the success of electrolysis.
  • this shape of the suspension device according to the invention also saves space within the area of the support rail.
  • the deformed composite body has additional contact pressing points, which are caused by z. B. grain strikes are caused and contribute to a current transfer with lower losses.
  • the lower profile line has rows of grains. In this case, the grain rows are limited in length to the length of the weld seams and are covered by them.
  • a permanent cathode made of stainless steel, corresponding to the material of the casing, is welded to the casing.
  • the welded joint is designed as an interrupted weld seam to avoid excessive longitudinal tension and warping of the cathode sheet.
  • the upper edge of the cathode sheet is expediently welded to the underside of the casing via a plurality of webs.
  • Stainless steels based on chromium, nickel or chromium / nickel / molybdenum are suitable as material for the cathode sheet and sheathing, for example austenitic Cr / Ni steels with the composition 17 to 18% Cr, 10 to 12% Ni, 2 to 2.5% Mo, depending on the C content stabilized z. B. with Ti, Nb, Ta.
  • the advantages of the suspension device according to the invention lie in the simple and economical production, in the high corrosion resistance of the entire device, which has practically only stainless steel surfaces, in the good current transfer between the copper profile and the stainless steel jacket via welded joints and additional contact points caused by pressing and rows of grains. Furthermore, the suspension device ensures a secure setting of the cathode plate in the vertical position in the electrolysis container.
  • the cathode sheet 1 is welded to the stainless steel jacket 2, which encloses the hollow copper profile 3.
  • the copper profile is exposed as a contact point due to the recess or notch in the jacket.
  • Fig. 2 a section along the line A-B of Fig. 1 is shown in plan view from below. In the area of the connection of the cathode sheet 1 with the jacket 2, a contact-improving row of grains is indicated by reference number 4.
  • Fig. 3 shows a composite body made of a copper tube 3 with a casing 2 made of a stainless steel tube before the non-cutting shaping.
  • FIG. 4 the oval support rail made of composite pipe with the cathode plate is shown in section after the non-cutting shaping.
  • the cathode sheet 1 is connected to the casing 2 via the weld seam 7.
  • the welds 6 seal the transition copper profile / stainless steel jacket at the recess in the jacket diffusion-tight.
  • Reference number 5 indicates a weld seam which seals a longitudinal slot in the upper surface line of the stainless steel profile and causes a current transfer from the current-carrying core profile to the surface profile.
  • Fig. 5 is a section along the line C-D of Fig. 2. With 4 a strong grain is designated, which acts on the casing 2 and the inner hollow profile 3 and creates an additional contact point.
  • the composite body made of hollow copper profile 3 and stainless steel jacket 2, connected to it by welds 6, lies with the jacket-free part on the conductor rail 8 of the wall 9 of the electrolysis container.
  • FIG. 7 corresponds to that of FIG. 6, but with the exception that the lower jacket end has a recess that rises outwards and towards the profile axis.

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)
  • Particle Accelerators (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Glass Compositions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Seal Device For Vehicle (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Microwave Tubes (AREA)

Claims (6)

1. Dispositif de suspension à amenée du courant pour des cathodes comprenant un rail porteur en cuivre et gainé de métal et une tôle formant cathode permanente, soudée au moins partiellement par un bord longitudinal et en un matériau correspondant à la gaine, l'une au moins des extrémités du rail étant, au moins le long d'une partie, dépourvue de la gaine, caractérisé en ce que le rail porteur est un profilé creux en cuivre et la gaine est en acier fin, la gaine étant soudée, sans porosité et d'une manière étanche à la diffusion, au rail porteur et la cathode permanente en acier fin étant reliée à la gaine par un cordon de soudure ininterrompu.
2. Dispositif de suspension à amenée du courant pour des cathodes suivant la revendication 1, caractérisé en ce que le rail porteur est constitué d'un tube en cuivre.
3. Dispositif de suspension à amenée du courant pour des cathodes suivant les revendications 1 à 2, caractérisé en ce que la gaine est constituée d'un tube en acier fin, enveloppant le tube de cuivre avec complémentarité de formes et munis éventuellement d'une fente longitudinale continue.
4. Dispositif de suspension à amenée du courant pour des cathodes suivant les revendications 1 à 3, caractérisé en ce que le tube en cuivre muni d'une gaine en acier fin est déformé en une pièce composite de section transversale elliptique (ovale), ou présentant deux parois parallèles, dont l'axe longitudinal est dans le plan de la tôle formant cathodes.
5. Dispositif de suspension à amenée du courant pour des cathodes suivant les revendications 1 à 4 caractérisé en ce que dans la région du cordon de soudure adhérant à la tôle formant cathodes, des points de contact-pression sous forme de points de soudure et/ou de coups de pointeaux sont ménagés dans la gaine.
6. Dispositif de suspension à amenée du courant pour des cathodes suivant les revendications 3 à 5, caractérisé en ce que la fente longitudinale continue de la gaine est munie, pour uniformiser la conduction du courant, d'une chenille de soudure de toute la longueur.
EP85200855A 1984-09-19 1985-05-29 Dispositif de suspension pour l'amenée de courant aux cathodes Expired EP0175395B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85200855T ATE30605T1 (de) 1984-09-19 1985-05-29 Stromzufuehrende aufhaengevorrichtung fuer kathoden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3434278 1984-09-19
DE19843434278 DE3434278A1 (de) 1984-09-19 1984-09-19 Stromzufuehrende aufhaengevorrichtung fuer kathoden

Publications (2)

Publication Number Publication Date
EP0175395A1 EP0175395A1 (fr) 1986-03-26
EP0175395B1 true EP0175395B1 (fr) 1987-11-04

Family

ID=6245719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85200855A Expired EP0175395B1 (fr) 1984-09-19 1985-05-29 Dispositif de suspension pour l'amenée de courant aux cathodes

Country Status (9)

Country Link
US (1) US4647358A (fr)
EP (1) EP0175395B1 (fr)
JP (1) JPS6173895A (fr)
AT (1) ATE30605T1 (fr)
AU (1) AU569016B2 (fr)
DE (2) DE3434278A1 (fr)
ES (1) ES295679Y (fr)
FI (1) FI78739C (fr)
PL (1) PL142261B2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241485C1 (de) * 1992-12-09 1994-03-17 Siemens Ag Kathode zum galvanischen Abscheiden von Kupfer und Verfahren zu ihrer Herstellung

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CA1263627A (fr) * 1986-02-06 1989-12-05 Kidd Creek Mines Ltd. Suspensions de cathodes
NL8700537A (nl) * 1987-03-05 1988-10-03 Gerardus Henrikus Josephus Den Draagstang voor anode- en/of kathodeplaten bij electrolytische raffinage van metalen en een werkwijze voor de vervaardiging van een dergelijke draagstang.
JP2615863B2 (ja) * 1988-06-20 1997-06-04 三菱マテリアル株式会社 電解用陰極板
GB2250629A (en) * 1990-11-23 1992-06-10 Chloride Silent Power Ltd Battery of high temperature cells
BE1004728A3 (fr) * 1991-04-18 1993-01-19 Solvay Conducteur electrique, procede de fabrication d'un conducteur electrique et electrode pour cellule d'electrolyse.
DE9309768U1 (de) * 1993-07-01 1993-11-04 Metzka Gmbh Kontaktiereinrichtung für ein Leiterplattengestell einer Galvanikanlage
US5492609A (en) * 1994-10-21 1996-02-20 T. A. Caid Industries, Inc. Cathode for electrolytic refining of copper
US5584975A (en) * 1995-06-15 1996-12-17 Eltech Systems Corporation Tubular electrode with removable conductive core
US5976333A (en) * 1998-01-06 1999-11-02 Pate; Ray H. Collector bar
FI108546B (fi) * 1998-09-24 2002-02-15 Outokumpu Oy Menetelmä katodin ripustustangon valmistamiseksi
DE10003012A1 (de) * 2000-01-25 2001-07-26 Km Europa Metal Ag Kathodenanordnung
AUPQ584800A0 (en) * 2000-02-25 2000-03-16 Comalco Aluminium Limited An electrical reduction cell
AU2001235261B2 (en) * 2000-02-25 2005-06-02 Comalco Aluminium Limited An electrolytic reduction cell and collector bar
FI110519B (fi) * 2000-11-17 2003-02-14 Outokumpu Oy Menetelmä vaippaosan ja ydinosan liittämiseksi toisiinsa
CL2004000941A1 (es) * 2004-05-03 2005-03-11 Ind Proveedora De Partes Metal Zona de union resistente a la corrosion entre cobre y acero inoxidable o titanio, formada por una primera zona de aleacion de cobre-niquel, una zona intermedia con aleacion de niquel o niquel puro y una segunda zona de aleacion de acero inoxidable-ni
US7807028B2 (en) 2005-03-09 2010-10-05 Xstrata Queensland Limited Stainless steel electrolytic plates
US8337679B2 (en) * 2007-08-24 2012-12-25 Epcm Services Ltd. Electrolytic cathode assemblies and methods of manufacturing and using same
CN103339294B (zh) * 2010-10-18 2016-08-10 Epcm服务有限公司 具有中空的悬挂杆的电解阴极组件
US20130119032A1 (en) * 2011-11-11 2013-05-16 Lincoln Global, Inc. System and method for welding materials of different conductivity
PL2900848T3 (pl) 2012-09-26 2021-06-14 Steelmore Holdings Pty Ltd Katoda i sposób wytwarzania
NL2016561B1 (nl) * 2016-04-06 2017-10-17 Beheermaatschappij Clement Weert B V Kathode-drager voor toepassing in een elektrolyse-inrichting alsmede een dergelijke elektrolyse-inrichting.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241485C1 (de) * 1992-12-09 1994-03-17 Siemens Ag Kathode zum galvanischen Abscheiden von Kupfer und Verfahren zu ihrer Herstellung

Also Published As

Publication number Publication date
FI78739B (fi) 1989-05-31
AU569016B2 (en) 1988-01-14
ES295679U (es) 1987-03-16
US4647358A (en) 1987-03-03
DE3434278A1 (de) 1986-04-17
PL142261B2 (en) 1987-10-31
FI78739C (fi) 1989-09-11
DE3560912D1 (en) 1987-12-10
AU4758985A (en) 1986-03-27
ATE30605T1 (de) 1987-11-15
JPS6173895A (ja) 1986-04-16
PL255397A2 (en) 1986-07-15
FI852068L (fi) 1986-03-20
ES295679Y (es) 1987-11-01
EP0175395A1 (fr) 1986-03-26
FI852068A0 (fi) 1985-05-23

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