EP0217429B1 - Cathode pour le raffinage électrolytique du cuivre et son procédé de fabrication - Google Patents

Cathode pour le raffinage électrolytique du cuivre et son procédé de fabrication Download PDF

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Publication number
EP0217429B1
EP0217429B1 EP86201440A EP86201440A EP0217429B1 EP 0217429 B1 EP0217429 B1 EP 0217429B1 EP 86201440 A EP86201440 A EP 86201440A EP 86201440 A EP86201440 A EP 86201440A EP 0217429 B1 EP0217429 B1 EP 0217429B1
Authority
EP
European Patent Office
Prior art keywords
edge
cathode
groove
edge strip
cathode according
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
EP86201440A
Other languages
German (de)
English (en)
Other versions
EP0217429A1 (fr
Inventor
Adalbert Bartsch
Joachim Von Sawilski
Bernd Michalek
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 AT86201440T priority Critical patent/ATE43367T1/de
Publication of EP0217429A1 publication Critical patent/EP0217429A1/fr
Application granted granted Critical
Publication of EP0217429B1 publication Critical patent/EP0217429B1/fr
Expired legal-status Critical Current

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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 a permanent cathode for the electrolytic refining of copper, which is immersed in an electrolyte in a vertical arrangement, and a method for its production.
  • copper output plates or sheets are usually used as cathodes and are connected to support rails.
  • the length of the support rails is greater than the width of the cathode sheet, so that the ends of the support rails can rest on the edge of the cell and the electrical contact is brought about.
  • the output plate is vertically immersed in the electrolyte of an electrolytic cell together with a pair of anode plates made of unrefined copper, or the output plate is located between a pair of non-soluble anodes and is immersed with them in the electrolyte of a cell for electrolytic metal recovery.
  • Starting plates made of copper so-called starting plates, have to be specially produced by electrolytic means and cannot be reused because the copper deposited on them cannot be removed.
  • the corners of the metal plate are rounded and the insulation is designed as a continuous insulating strip bent around the rounded corners, the material of the insulating strip being molded into along the edges Holes that are pressed in by hot pressing.
  • a cathode for the electrolytic deposition of metals which has a milled gap on the end in its edge zones, into which an insulating strip of plastomers or elastomers is firmly inserted, e.g. by compression molding.
  • the outer part of the insulating strip extends beyond the bead-like border.
  • the cathode for the deposition of e.g. Copper can be made of stainless steel.
  • the bead-like retaining flanks for the insulating strips cause partial increases in current density and undesirable reinforced deposits in the edge region as a result of different distances from the anode plate.
  • the arrangement has a lack of stability and the manufacture is complex.
  • the object of the invention is to provide a cathode for the galvanic deposition of copper, in which the advantages of the known electrodes with insulating edge strips are retained, but the known disadvantages, in particular the disadvantages indicated above, are avoided.
  • the invention is based on a cathode for the electrolytic refining of copper, with a support rod and a flat stainless steel starting sheet attached to it and at least provided with electrically insulating edge strips on the vertical longitudinal edges, the longitudinal edges having a groove on the end face with a fit therein and have the edge over their entire length projecting edge strips made of natural or synthetic polymers.
  • the object is achieved by designing a cathode of the aforementioned type in accordance with the invention in such a way that the insulating edge strip fitted into a dovetail-shaped groove is formed by longitudinal folding of a polymer film, in the fold (kink) of which a stainless steel wire is arranged and its congruence film halves lying one above the other are connected to one another in a liquid-tight manner.
  • the grooves advantageously have a flat or rounded base.
  • the flanks of the groove are chamfered on the outside and shaped into a dovetail profile by means of compression molding, the smaller opening of which corresponds approximately to the thickness of twice the film thickness.
  • the dovetail-shaped groove flanks and the insulated insulating edge strips are fitted in a form-fitting and liquid-tight manner in the critical area. The liquid-tight connection of the film halves prevents the penetration of electrolyte and crystalline deposits.
  • the liquid-tight connection can be an adhesive connection or a welded connection.
  • the method of connection depends on the type of material from which the edge strip is made.
  • the material of the edge strip is an electrically insulating material made from natural or synthetic polymers, for example natural or synthetic rubber, such as butadiene homopolymers, copolymers or block copolymers of butadiene with unsaturated monomers, such as styrene or acrylonitrile; halogenated rubbers such as polychloroprene; also thermoplastic polymers, such as polyolefins, polycarbonate; halogen-containing polymers, such as polymers or copolymers of vinyl chloride or vinylidene chloride; Polytetrafluoroethylene; Polyurethanes.
  • natural or synthetic rubber such as butadiene homopolymers, copolymers or block copolymers of butadiene with unsaturated monomers, such as styrene or acrylonitrile
  • halogenated rubbers such as polychloroprene
  • thermoplastic polymers such as polyolefins, polycarbonate
  • halogen-containing polymers such
  • thermoplastic elastomers such as block copolymers of butadiene with styrene, or thermoplastic polymers, such as halogen-containing vinyl polymers.
  • a material made of polyvinyl chloride is used which can be easily welded.
  • a PVC film of approximately 30 to 35 mm in width and approximately 0.4 to 0.6 mm in thickness.
  • a pocket-like sheath is initially obtained by continuous, half-lengthwise folding of the polymer film, preferably around a metal wire of approximately 0.8 to 1.2 mm in diameter, for example stainless steel wire.
  • foil and wire are removed from storage drums and brought together and folded by suitable devices.
  • the wire can also be subsequently introduced into the kink of the folded or folded and welded foil sections.
  • the folded material with the wire in the kink is then expediently fed to a welding device.
  • the congruent, overlapping halves of the film are connected by line welding or surface welding.
  • the line weld is preferably carried out as an edge weld parallel and perpendicular to the fold edge, the weld carried out perpendicular to the fold edge being brought close to it.
  • the surface welding is also only brought close to the folded edge. In general, however, it is sufficient that only those parts of the film halves which are laterally projecting beyond the groove webs or groove flanks are surface-welded. If a gap-like opening remains between the wire insert and the fold, it is closed by injection of a low-viscosity synthetic resin that cures to the elastomer, for example by injection of a moisture-curing silicone resin.
  • the longitudinal edges that is to say the edges running perpendicular to the support rail, are provided with a groove on the end face, but the lower edge can also be provided with a groove for an insulating edge strip.
  • the depth of the groove is generally 4.5 to 6 mm, preferably 5.5 mm. The shallow groove depth ensures a favorable ratio of flank thickness to flank length and thus increased stability of the arrangement.
  • the edge overhang of the insulating edge strip is generally 5 to 20 mm.
  • a protrusion width of 8 to 15 mm is expediently provided.
  • a protrusion width of 10 mm is sufficient in many cases.
  • edges of the cathode sheet or groove flanks prefferably be deburred on the inside at the transition to the insulating strip in order to avoid damage when the insulating strip is introduced into the groove.
  • the flanks of the groove are chamfered on the outside towards the edge strip with a positive angle to the precipitation cathode. This prevents jamming when stripping the precipitation cathode.
  • Stainless steels are expediently used as the material for the cathode, for example stainless steels with approx. 18% chromium, approx. 10% nickel, approx. 2% molybdenum and less than 0.1% carbon. Such steels ensure good adhesion of the deposited copper during the deposition process and, on the other hand, enable easy and automatic separation of the coating.
  • the support rail of the cathode according to the invention can consist of the same material as the cathode; However, the part of the mounting rail intended for the power supply is expediently made of copper.
  • the edge strip made of folded and welded foil with the inserted wire is preferably drawn in from the lower end of the grooved edge of the electrode sheet, optionally with the use of a lubricant.
  • the edge strip is pulled out over the upper horizontal edge of the electrode sheet so that a protruding part remains. This protruding part facilitates later replacement of the edge strip used by first pulling out the wire and then removing the film material from the groove. Due to the drawing process and the resulting frictional resistance, the edge strip is stretched with a reduced cross-section, so that after the tensile forces cease to exist, the strip contracts again and the narrow groove is closed in a liquid-tight manner.
  • the invention has a number of advantages. Compared to cathodes with conventional edge insulation, the effective cathode width is increased with the same cell dimensions. The material distortions caused by different expansion coefficients of the different materials of the cathode and insulating strips are avoided. The edge strip is secured against migration or pulling out of the wedge-shaped gap during operation by the inserted stainless steel wire. In the event of renewal, the wire can be easily pulled out lengthways and then the insulating strip removed. An increased service life of the cathode is achieved and thus downtimes and repair work are reduced.
  • the cathode 2 is welded to the support rail via the webs 4.
  • the edge strip insulation 3 with inserted wire 5 is fitted into the side edge (longitudinal edge) running perpendicular to the mounting rail via a groove milled on the end face.
  • Fig. 2 shows a section along the line A-B of Fig. I.
  • the edge strip 3 with its parts 3a is positively fitted.
  • the edges of the cheeks 7 are deburred on the inside and chamfered on the outside towards the edge strip with a positive angle to the precipitation cathode.
  • the gap-like opening 9 with the inserted wire 5 is filled with an elastomer.
  • With 8 a surface weld is designated.
  • With 10 is still a part of the original milling groove designated, which is completely filled liquid-tight with the deformable film material with the enclosed elastomeric resin and wire at a sufficiently high pressure.

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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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Materials For Medical Uses (AREA)

Claims (10)

1. Cathode pour le raffinage électrolytique du cuivre comprenant une tige-support et une tôle de départ en acier fin, qui y est fixée, qui est plane et dont au moins les bords longitudinaux verticaux sont munis d'une bande marginale électriquement isolante, les bords longitudinaux comportant du côté frontal une gorge avec une bande marginale en polymères naturels ou synthétiques qui y est adaptée et qui dépasse le bord sur toute sa longueur, caractérisée en ce que la bande marginale isolante adaptée dans une gorge de type à queue d'aronde est formée par pliage longitudinal d'une feuille de polymère, dans la pliure (coude) de laquelle est disposé un fil d'acier fin et dont les moitiés superposables disposés l'une sur l'autre sont reliées entre elles de manière étanche au liquide.
2. Cathode suivant la revendication 1, caractérisée en ce que la liaison étanche au liquide est un joint collé.
3. Cathode suivant la revendication 1, caractérisée en ce que la liaison étanche au liquide est un joint soudé.
4. Cathode suivant les revendications 1 et 3, caractérisée en ce que le joint soudé est une soudure linéaire, de préférence une soudure en bordure.
5. Cathode suivant les revendications 21 et 3, caractérisée en ce que le joint soudé est une soudure suivant une surface.
6. Cathode suivant les revendications 1, 3 et 5, caractérisée en ce qu'au moins les parties de la feuille qui se situent au dela du bord de la gorge sont soudées suivant une surface.
7. Cathode suivant l'une des revendications 1 à 6, caractérisée en ce que des ouvertures de type à fente, qui sont formées dans la région où le fil est inséré, sont emplies d'une résine de faible viscosité susceptible de durcir en un élastomère.
8. Cathode suivant l'une des revendications 1 à 7, caractérisée en ce que la bande marginale, y compris le fil inséré, s'étend au moins au dela du bord supérieur de la tôle formant l'électrode.
9. Cathode suivant l'une des revendications 1 à 8, caractérisée en ce que les flancs de la gorge conformée en queue d'aronde et la bande marginale isolante qui y est introduite, sont reliés par complémentarité de formes et de manière étanche au liquide.
10. Procédé de fabrication d'une cathode ayant isolation marginale, du type suivant les revendications 1 à 9, caractérisé en ce que:
a) dans les côtés frontaux de la tôle de départ sont ménagées des gorges de préférence à base arrondie,
b) les flancs des gorges sont conformés en queue d'aronde par formage sans enlèvement de copeaux,
c) dans la fente cunéiforme formée, on introduit, en partant d'une extrémité de la gorge, dans la direction longitudinale, une bande marginale isolante dans laquelle est inséré un fil d'acier fin et qui déborde des flancs de la gorge, la largeur de fente la plus petite n'étant pas supérieure à l'épaisseur de la bande marginale, et
d) le fil en métal fin est inséré dans le coude d'une feulle polymère pliée en deux moitiés et les moitiés de feuille qui sont superposables et qui se situent l'une au dessus de l'autre, sont reliées entre elles d'une manière étanche au liquide.
EP86201440A 1985-08-31 1986-08-20 Cathode pour le raffinage électrolytique du cuivre et son procédé de fabrication Expired EP0217429B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86201440T ATE43367T1 (de) 1985-08-31 1986-08-20 Kathode fuer die elektrolytische raffination von kupfer und verfahren zu deren herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531176 1985-08-31
DE19853531176 DE3531176A1 (de) 1985-08-31 1985-08-31 Kathode fuer die elektrolytische raffination von kupfer und verfahren zu deren herstellung

Publications (2)

Publication Number Publication Date
EP0217429A1 EP0217429A1 (fr) 1987-04-08
EP0217429B1 true EP0217429B1 (fr) 1989-05-24

Family

ID=6279853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201440A Expired EP0217429B1 (fr) 1985-08-31 1986-08-20 Cathode pour le raffinage électrolytique du cuivre et son procédé de fabrication

Country Status (9)

Country Link
US (1) US4670124A (fr)
EP (1) EP0217429B1 (fr)
JP (1) JPS6256590A (fr)
AT (1) ATE43367T1 (fr)
AU (1) AU580241B2 (fr)
DE (2) DE3531176A1 (fr)
ES (1) ES2001284A6 (fr)
FI (1) FI863244A (fr)
PL (1) PL261217A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37690E1 (en) * 1987-02-25 2002-05-07 Hitachi, Ltd. Lead frame and semiconductor device
JP2757549B2 (ja) * 1990-09-27 1998-05-25 三菱マテリアル株式会社 種板製造用母板の縁部保護体
SE9502889D0 (sv) * 1995-08-21 1995-08-21 Skega Ab Katodelement jämte förfarande för framställning av katodelementet
WO1997041280A1 (fr) * 1996-04-26 1997-11-06 Marley Plastics Pty. Ltd. Ameliorations apportees a des protecteurs lateraux de plaque de cathode
FI973888A0 (fi) * 1997-10-06 1997-10-06 Outokumpu Oy Elektrod foer elektrolytisk raffinering och foerfarande foer framstaellning daerav
GB2337995A (en) * 1998-06-05 1999-12-08 Creators Europ Limited Edge protected cathode plates used in the recovery of metals
US6231730B1 (en) * 1999-12-07 2001-05-15 Epvirotech Pumpsystems, Inc. Cathode frame
US6746581B2 (en) 2002-10-22 2004-06-08 William A. Ebert Edge protector systems for cathode plates and methods of making same
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
US20060222817A1 (en) * 2005-04-01 2006-10-05 Pauze Dennis A Industrial protective systems
US20130119032A1 (en) * 2011-11-11 2013-05-16 Lincoln Global, Inc. System and method for welding materials of different conductivity
US9863050B2 (en) 2012-03-16 2018-01-09 Clim-A-Tech Industries, Inc. Cathode plate edge protector and methods of manufacture
US9139922B2 (en) 2012-03-16 2015-09-22 Clim-A-Tech Industries, Inc. Cathode plate edge protector and methods of manufacture
CN106435649B (zh) * 2016-11-07 2018-10-12 杨丹虹 电解精炼永久阴极板竖边用暗扣式装配并可修复的包边条
CN115071044A (zh) * 2022-06-17 2022-09-20 深圳市宇盛光电有限公司 Pn铜排包塑组件的制作方法

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US2566467A (en) * 1947-08-25 1951-09-04 Symmes Whitman Stripping cathode
US3501385A (en) * 1967-05-08 1970-03-17 Bunker Hill Co Process for stripping metal from a cathode
CA910844A (en) * 1970-01-14 1972-09-26 The International Nickel Company Of Canada Electrolytic refining and winning of copper
BE746708A (fr) * 1970-02-27 1970-07-31 Jenatzy Caoutchouc Ind S A Profile de protection des bords des plaques d'electrolyse,
US3830710A (en) * 1971-01-08 1974-08-20 Int Nickel Co Masked electrode structure and process for electrolytic deposition of metals
JPS514964Y2 (fr) * 1971-10-08 1976-02-12
US3804724A (en) * 1972-12-11 1974-04-16 Ca Copper Refiners Ltd Production of blanks used in the electrodeposition of strippable metal coatings
DD140624A3 (de) * 1976-02-26 1980-03-19 Dietmar Schab Mutterblech mit kanten-und flaechenisolation zur herstellung vonstarterblechen
CA1070643A (fr) * 1976-12-03 1980-01-29 Robert D. H. Willans Demoulage automatique d'une plaque zinguee
FR2388062A1 (fr) * 1977-04-21 1978-11-17 Ugine Aciers Bordures isolantes de cathodes pour depots metalliques par electrolyse
CA1082131A (fr) * 1977-10-11 1980-07-22 Lucien Babin Electrode pour procede d'electrodeposition
AU506521B1 (en) * 1979-02-05 1980-01-10 M.I.M. Technology Marketing Limited Cathode with stainless steel - copper clad hanger bar
GB2104549B (en) * 1981-08-26 1984-12-12 Copper Refineries Pty Ltd Cathode for use in the electrolytic refining of copper
US4490223A (en) * 1983-09-21 1984-12-25 Asarco Incorporated Electrode for electrometallurgical processes

Also Published As

Publication number Publication date
JPS6256590A (ja) 1987-03-12
ES2001284A6 (es) 1988-05-01
AU6209786A (en) 1987-03-05
US4670124A (en) 1987-06-02
ATE43367T1 (de) 1989-06-15
DE3531176A1 (de) 1987-03-12
AU580241B2 (en) 1989-01-05
DE3663538D1 (en) 1989-06-29
FI863244A0 (fi) 1986-08-08
PL261217A1 (en) 1987-09-21
EP0217429A1 (fr) 1987-04-08
FI863244A (fi) 1987-03-01

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