EP0153512A2 - Procédé de fabrication d'un plombage homogène sur les porteurs de plaques d'anodes - Google Patents

Procédé de fabrication d'un plombage homogène sur les porteurs de plaques d'anodes Download PDF

Info

Publication number
EP0153512A2
EP0153512A2 EP84201952A EP84201952A EP0153512A2 EP 0153512 A2 EP0153512 A2 EP 0153512A2 EP 84201952 A EP84201952 A EP 84201952A EP 84201952 A EP84201952 A EP 84201952A EP 0153512 A2 EP0153512 A2 EP 0153512A2
Authority
EP
European Patent Office
Prior art keywords
lead
preheated
backing
homogeneous
carrier
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.)
Granted
Application number
EP84201952A
Other languages
German (de)
English (en)
Other versions
EP0153512B1 (fr
EP0153512A3 (en
Inventor
Alfred Bringmann
Hans-Günter Grau
Rolf Meier
Rudolf Schmidt
Hartmut Dr. Sandig
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.)
ROEHR + STOLBERG GMBH
Original Assignee
Rohr and Stolberg 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 Rohr and Stolberg GmbH filed Critical Rohr and Stolberg GmbH
Publication of EP0153512A2 publication Critical patent/EP0153512A2/fr
Publication of EP0153512A3 publication Critical patent/EP0153512A3/de
Application granted granted Critical
Publication of EP0153512B1 publication Critical patent/EP0153512B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere

Definitions

  • the invention relates to a method for producing the homogeneous lead, the preferably tin-plated and preheated carrier with a reducing flame for anode plates formed from rolled lead or lead alloys for electrolysis plants.
  • the homogeneous lead of the supports for anode plates serves to protect the surface against the corrosion attack caused by the acids in the electrolysis bath.
  • the lead coating is usually connected to the carrier by melting with an intermediate alloy in such a way that after cleaning the surfaces to be leaded, they are tinned with a 15 to 50 ⁇ m thick layer in order to achieve an effective connection of the lead coating to the carrier.
  • the tin-coated carrier is then preheated and the lead is homogeneously melted onto the carrier to be coated using a gas burner, for example a welding or soldering torch.
  • a mixture of oxygen with natural gas or with hydrogen serves as the fuel gas. The flame is adjusted to reduce the oxygen concentration in the lead.
  • the flame core penetrates the melt, with the lead alloyed with the tin layer.
  • oxides and foreign substances are flushed to the surface and must be removed from there.
  • rough and uneven areas on the surface must be smoothed using the burner flame.
  • the cracks, holes, protrusions or rough bumps that form on the surface during this process must be removed by appropriate reworking. It is also important to ensure that the lead coating remains pore-free.
  • the solution to this problem consists in that the melt consisting of lead or a lead alloy is cast onto the tinned and preheated with reducing flame to the flow temperature of the tin.
  • the carrier is arranged in a preheated mold, preferably also by means of the reducing flame, and the melt is poured in, so that its carrier is washed around by the lead melt on all sides, with the exception of its suspension points.
  • the tinned carrier is expediently wetted in the cold state with an appropriate soldering water which has a deoxidizing effect during the preheating of the carrier.
  • the reducing flame prevents the tin from re-oxidizing.
  • the method according to the invention is particularly useful when the supports of the anode plates are to be lead-coated homogeneously with a lead alloy containing calcium, in order to avoid, for example, the use of lead alloys containing antimony for the homogeneous lead because of the risk of poisoning the electrolyte with antimony.
  • the production of homogeneous lead from calcium-containing lead alloys by means of gas burners is extremely difficult and the result is not technically satisfactory because calcium-containing lead alloys have the property of burning strongly in the presence of air.
  • a special development of the method according to the invention consists in that the anode plates which are rolled from lead or lead alloys are cast directly into the lead coating layer of the carrier during the production of the homogeneous lead of the carrier, so that the welding of the anode plate usually used with the homogeneous lead of the carrier not applicable.
  • edge area of the anode plate to be poured in is held a few millimeters above the opposite surface of the support during casting, and according to a further feature of the invention, the edge area of the anode plate to be poured in is wedge-shaped so that no gas bubbles form in it Area can fix on it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Electroplating Methods And Accessories (AREA)
EP84201952A 1984-02-28 1984-12-28 Procédé de fabrication d'un plombage homogène sur les porteurs de plaques d'anodes Expired EP0153512B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843407214 DE3407214A1 (de) 1984-02-28 1984-02-28 Verfahren zur herstellung der homogenen verbleiung der traeger fuer anodenplatten
DE3407214 1984-02-28

Publications (3)

Publication Number Publication Date
EP0153512A2 true EP0153512A2 (fr) 1985-09-04
EP0153512A3 EP0153512A3 (en) 1987-08-26
EP0153512B1 EP0153512B1 (fr) 1989-12-20

Family

ID=6229056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201952A Expired EP0153512B1 (fr) 1984-02-28 1984-12-28 Procédé de fabrication d'un plombage homogène sur les porteurs de plaques d'anodes

Country Status (2)

Country Link
EP (1) EP0153512B1 (fr)
DE (2) DE3407214A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002033142A1 (fr) * 2000-10-17 2002-04-25 Lapmet Oy Procede de revetement d'une electrode utilisee dans l'electrolyse de recuit-decapage d'un acier inoxydable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014068410A1 (fr) * 2012-10-29 2014-05-08 Zimco Group (Pty) Ltd Anode pour utilisation dans la récupération de métaux par électrolyse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1181142A (fr) * 1957-08-13 1959-06-11 Const Mecaniques De Stains Soc Procédé de fabrication de plaques et d'autres éléments en plomb armés de fibres minérales
US4050961A (en) * 1974-11-22 1977-09-27 Knight Bill J Method for casting anodes
GB2001347A (en) * 1977-07-20 1979-01-31 Imp Metal Ind Kynoch Ltd Electrode and hanger bar therefor
EP0053377A1 (fr) * 1980-11-28 1982-06-09 Rsr Corporation Anode pour l'obtention électrolytique de métaux et procédé pour sa préparation
JPS58100963A (ja) * 1982-11-17 1983-06-15 Shin Kobe Electric Mach Co Ltd 鋳造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1181142A (fr) * 1957-08-13 1959-06-11 Const Mecaniques De Stains Soc Procédé de fabrication de plaques et d'autres éléments en plomb armés de fibres minérales
US4050961A (en) * 1974-11-22 1977-09-27 Knight Bill J Method for casting anodes
GB2001347A (en) * 1977-07-20 1979-01-31 Imp Metal Ind Kynoch Ltd Electrode and hanger bar therefor
EP0053377A1 (fr) * 1980-11-28 1982-06-09 Rsr Corporation Anode pour l'obtention électrolytique de métaux et procédé pour sa préparation
JPS58100963A (ja) * 1982-11-17 1983-06-15 Shin Kobe Electric Mach Co Ltd 鋳造装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 203 (M-241)[1348], 8. September 1983; & JP-A-58 100 963 (SHINKOUBE DENKI K.K.) 15-06-1983 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002033142A1 (fr) * 2000-10-17 2002-04-25 Lapmet Oy Procede de revetement d'une electrode utilisee dans l'electrolyse de recuit-decapage d'un acier inoxydable

Also Published As

Publication number Publication date
EP0153512B1 (fr) 1989-12-20
DE3480768D1 (de) 1990-01-25
EP0153512A3 (en) 1987-08-26
DE3407214A1 (de) 1985-08-29

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