EP0194321A1 - Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée - Google Patents

Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée Download PDF

Info

Publication number
EP0194321A1
EP0194321A1 EP85102382A EP85102382A EP0194321A1 EP 0194321 A1 EP0194321 A1 EP 0194321A1 EP 85102382 A EP85102382 A EP 85102382A EP 85102382 A EP85102382 A EP 85102382A EP 0194321 A1 EP0194321 A1 EP 0194321A1
Authority
EP
European Patent Office
Prior art keywords
lead
thickness
anode
silver content
foil
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.)
Withdrawn
Application number
EP85102382A
Other languages
German (de)
English (en)
Inventor
Günter Dr. Haberstroh
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.)
Bleiindustrie Vorm Jung and Lindig GmbH
Original Assignee
Bleiindustrie Vorm Jung and Lindig 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 Bleiindustrie Vorm Jung and Lindig GmbH filed Critical Bleiindustrie Vorm Jung and Lindig GmbH
Priority to EP85102382A priority Critical patent/EP0194321A1/fr
Publication of EP0194321A1 publication Critical patent/EP0194321A1/fr
Withdrawn legal-status Critical Current

Links

Images

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 method for producing lead anodes for zinc electrolysis and lead anode produced according to this.
  • Anodes with a silver content of between 1% and 0.45% are used to produce fine zinc in the electrolytic process. These anodes are either cast or rolled. used, which can also be profiled or flat anodes. It is then known that the anode part located in the bathroom 'the desired Silberg: stop, comprising while the head of the anode is located outside of the bath is only produced from fine lead, so that it comes down to a saving of silver, but ultimately the essential Lead anode part is interspersed with silver, which results in high manufacturing costs.
  • the invention solves the problem of creating a method for producing lead anodes for zinc electrolysis, with which lead anodes can be produced economically and in which, despite the reduction in the amount of silver, the anode potential, which is substantially determined by the silver content, is in no way impaired. Furthermore, a lead anode for zinc electrolysis is to be created which is economical to produce and which has a smaller amount of silver than known lead anodes.
  • an anode body consisting of cast or rolled lead is provided in its surface area or on its surface with a content of silver, in particular from 1 to 0.45 percent by weight .
  • the silver content is applied to the surface of the anode body by means of a plating composite having a silver content of 1% to 0.45%.
  • This is produced according to one embodiment of the invention in such a way that a blank made of fine lead is plated with a lead foil with a silver content of 1% to 0.45% in a rolling process, the thickness of the plating being in the final state, i.e. when the Finished anode thickness, between 20 and 100 microns.
  • the plating composite obtained in this way is converted directly into the anode shape required in each case and used as an anode in zinc electrolysis.
  • the thickness of this plating produced in this way ie when the thickness of the finished anode is reached, is between 20 and 100 microns.
  • the normal thickness of such a lead anode is approximately 10 mm.
  • the silver content is thus reduced to 2% to 0.4% of the original silver content.
  • the invention provides for the production of the plating composite from a circuit board made of fine lead and a lead foil with a silver content of 1% to 0.45%, whereby on each side of the circuit board made of fine lead with a thickness of e.g. 50 mm a lead foil with a silver content of 1% to 0.45% of 0.5 mm thickness is applied and then the entire composite is rolled down to the thickness of 10 mm in one pass or in several passes. In this way a plating of 1% can be achieved.
  • the invention provides a further embodiment of the lead anode production method, in which the plating is carried out in two stages.
  • This method works in such a way that, in a first stage, a sheet of fine lead with a thickness of 50 mm on both sides, each with a lead foil coated with a silver content of 1% to 0.45% of 0.25 mm thickness, the entire composite rolled down in one pass to a thickness of, for example, 20 mm and in a second stage the rolled product obtained on both sides with a lead foil with a silver content of 1 % to 0.45% coated with a thickness of 0.1 mm or 0.05 mm and the entire composite obtained is rolled down in one pass to a final thickness of 10 mm. Because of this double plating, the likelihood that a crack or hole in the first plating layer will encounter a hole in the second plating layer is reduced by significant factors.
  • the invention provides yet another manufacturing process according to which a sheet of fine lead, e.g. with a thickness of 12 mm.
  • This sheet of sheet metal which is continuously drawn from the melt with a pair of rollers, passes through a further pair of rollers, in which the lead plating foils are fed in from above and below, the casting structure being substantially preserved by a slight reduction in the hot state.
  • the silver content of the plating lead foil relates to 1 to 0.45 percent by weight.
  • a lead anode for zinc electrolysis processes which, according to the invention, has a silver content in the region of the surface of its anode body, in particular from 1 to 0.45 percent by weight.
  • the lead anode consists of an anode body made of a sheet of sheet metal and a lead foil clad with this, with a silver content of -l% to Wherein is 0, 45% the thickness of the finished anode between 20 and 100 microns.
  • the lead anode consists of an anode body made of a sheet of approximately 50 mm thickness made of fine lead, which carries a lead foil with a silver content of 1% to 0.45% on each side, the overall composite having a final thickness of e.g. 10 mm.
  • the lead anode consists of an anode body made of a sheet of fine lead with a thickness of e.g. 50 mm, which is coated on each side with a first lead foil with a silver content of 1% to 0.45% with a thickness of about 0.25 mm, each of these lead foils on its outer surface with a second lead foil with a silver content of 1 % to 0.45% and is coated with a thickness of 0.1 mm or 0.05 mm, the overall composite having a thickness of, for example, before coating with the second lead foils 20 mm and after coating with the second lead foils has a final thickness of 10 mm.
  • the sheet is continuously withdrawn from the melt by means of the pair of rolls 11 and 12 that is removed from the container 10.
  • a glass fiber mat 30 is introduced into the pair of rollers 11, 12.
  • the pair of rollers 11, 12 is followed by a further pair of rollers 111, 112, into which the fine sheet metal 100 and the glass fiber mat 20 are introduced together with two cladding lead foils 30, 130, the two cladding lead foils 30, 130 coming from above and below being fed to the pair of rollers 111, 112.
  • the plating assembly PV then runs from the pair of rollers 111, 112 in the direction of the arrow X to a winding core (not shown in the drawing).
  • the lead plating films contain a silver content of 1 to 0.45 percent by weight.
  • a lead anode 50 prepared by the process of this invention comprises as shown in FIG. 2 on its surface 51a and in the surface region of its anode body 51 has a silver content from 1% to 0.45%, which is indicated in F Ig.2 at 52.
  • the lead anode 50 consists of an anode body 51 made of a board 55 made of fine lead and a lead foil 56 plated with the board, which has a silver content of 1% to 0.45%.
  • the thickness of the finished lead anode 50 is between 20 and 100 microns.
  • the lead anode 50 according to FIG. 4 likewise consists of an anode body 51 which is formed by the circuit board 55 from fine lead with a thickness of approximately 50 mm, which has a lead foil 156 or 157 on each side with a silver content of 1% to 0, 45% wears.
  • the overall composite of this plating product ultimately has a final thickness of e.g. 10 mm on.
  • the lead anode 50 according to FIG. 5 is coated several times with a lead foil which has a silver content of 1% to 0.45%.
  • the anode body 51 consists of a circuit board 55 made of fine lead with a thickness of e.g. 50 mm.
  • This circuit board 55 is coated on each side with a first lead foil 156, 157 with a thickness of approximately 0.25 mm.
  • Each of these lead foils 156, 157 is coated on its outer surface with a second lead foil 156a or 157a with a thickness of 0.1 mm or 0.05, the total composite before coating with the second lead foils 156a, 157a with a thickness of e.g. 20 mm and after coating with the second lead foils 156a, 157a has a final thickness of 10 mm.
  • the final thicknesses are obtained by rolling down the various cladding assemblies.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
EP85102382A 1985-03-02 1985-03-02 Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée Withdrawn EP0194321A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP85102382A EP0194321A1 (fr) 1985-03-02 1985-03-02 Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85102382A EP0194321A1 (fr) 1985-03-02 1985-03-02 Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée

Publications (1)

Publication Number Publication Date
EP0194321A1 true EP0194321A1 (fr) 1986-09-17

Family

ID=8193340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85102382A Withdrawn EP0194321A1 (fr) 1985-03-02 1985-03-02 Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée

Country Status (1)

Country Link
EP (1) EP0194321A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376447A1 (fr) * 1988-10-31 1990-07-04 Zimco Industries (Proprietary) Limited Electrode pour application électrochimique
WO2000042241A1 (fr) * 1999-01-13 2000-07-20 Rsr Technologies, Inc. Anodes d'extraction electrolytiques permettant de produire rapidement un revetement d'oxyde protecteur
CN102505126A (zh) * 2011-12-22 2012-06-20 中南大学 一种低银含量Pb-RE-Ag合金电极

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399490A1 (fr) * 1977-08-03 1979-03-02 Ammi Spa Anode pour cellules electrolytiques
FR2492415A1 (fr) * 1980-10-20 1982-04-23 Samim Spa
EP0060791A1 (fr) * 1981-03-18 1982-09-22 Asturienne France Utilisation d'anodes de plomb à armatures dans l'élaboration électrolytique du zinc en solution de sulfate, et procédé de préparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2399490A1 (fr) * 1977-08-03 1979-03-02 Ammi Spa Anode pour cellules electrolytiques
FR2492415A1 (fr) * 1980-10-20 1982-04-23 Samim Spa
EP0060791A1 (fr) * 1981-03-18 1982-09-22 Asturienne France Utilisation d'anodes de plomb à armatures dans l'élaboration électrolytique du zinc en solution de sulfate, et procédé de préparation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0376447A1 (fr) * 1988-10-31 1990-07-04 Zimco Industries (Proprietary) Limited Electrode pour application électrochimique
WO2000042241A1 (fr) * 1999-01-13 2000-07-20 Rsr Technologies, Inc. Anodes d'extraction electrolytiques permettant de produire rapidement un revetement d'oxyde protecteur
CN102505126A (zh) * 2011-12-22 2012-06-20 中南大学 一种低银含量Pb-RE-Ag合金电极

Similar Documents

Publication Publication Date Title
EP3666931B1 (fr) Procédé de fabrication d'une bande métallique ayant un revêtement de chrome et d'oxyde de chrome avec un électrolyte à base de chromium trivalent
DE3112216C2 (fr)
DE1771323A1 (de) Verfahren zum UEberziehen von Mctalloberflaechen mit einem fluorhaltigen Polymer
DE602004007566T2 (de) Pressform und Herstellmethode derselben
DE3212181A1 (de) Stahltraeger fuer eine flachdruckplatte, sowie verfahren zur herstellung
DE3037098C2 (de) Verfahren zum Herstellen eines warmgewalzten Stranges aus Kupfer
DE2507561B2 (de) Verfahren zur Herstellung von Verbundmaterial fur Dreistofflager oder Gleitstucke
CH658206A5 (de) Form fuer das stranggiessen von stahl.
DE1527541A1 (de) Verfahren zur Ausbildung eines Schichtstreifens aus Aluminium und Stahl
EP1200253B2 (fr) Procede de production d'un materiau composite en aluminium
DE1621114B2 (de) Verfahren zur herstellung eines isolierenden schutzfilms auf aluminium oder einer aluminiumlegierung
DE60100780T2 (de) Konstruktion von kaschiertem Material für geätzte Trimetallschaltungen
EP0194321A1 (fr) Méthode de fabrication d'anodes de plomb destinées à l'élaboration électrolytique du zinc et anode de plomb ainsi réalisée
DE3530454C2 (fr)
DE3206262C2 (de) Verfahren zur Herstellung von galvanisch selektiv mit Edelmetall beschichteten Bändern als Halbzeug für elektrische Kontakte
DE2428310A1 (de) Metallverbundmaterial sowie verfahren zur herstellung eines metallverbundmaterials
DE1496748B2 (de) Kupferkoerper, insbesondere kupferfolie, mit einer auf elektrolytischem wege erzeugten, aus zwei schichten aufgebauten rauhen oberflaeche und verfahren zu dessen herstellung
DE2550178C3 (de) Elektrodenhalterung
DE3112947C2 (de) Verfahren und Anlage zum Bogenstranggießen
DE4011201C1 (en) Coating workpiece with chromium for improved corrosion resistance - comprises using aq. electrolyte soln. contg. chromic acid sulphate ions, and fluoro:complexes to increase deposition
DE2108088A1 (de) Dünnwandige zylindrische Siebschablone fur den Rotationssiebdruck sowie Verfahren zu ihrer Herstellung
DE4116686A1 (de) Verfahren zur herstellung von gleitflaechen
EP3017890A1 (fr) Tuyau multi-paroi panneaux et sa fabrication
DE3016179A1 (de) Verfahren zur herstellung eines gewelleten, kupferstabilisierten nb (pfeil abwaerts)3(pfeil abwaerts) sn-supraleiters
EP1203110A2 (fr) Procede de realisation d'une feuille de cuivre autoportante

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19860103

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR GB IT NL SE

17Q First examination report despatched

Effective date: 19870521

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890329

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HABERSTROH, GUENTER, DR.