EP0174592A2 - Anode for zinc electrolysis and method for its preparation - Google Patents

Anode for zinc electrolysis and method for its preparation Download PDF

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Publication number
EP0174592A2
EP0174592A2 EP85111105A EP85111105A EP0174592A2 EP 0174592 A2 EP0174592 A2 EP 0174592A2 EP 85111105 A EP85111105 A EP 85111105A EP 85111105 A EP85111105 A EP 85111105A EP 0174592 A2 EP0174592 A2 EP 0174592A2
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EP
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Prior art keywords
anode
silver
lead
copper
support rod
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EP85111105A
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German (de)
French (fr)
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EP0174592A3 (en
Inventor
Helmut Dipl.-Ing. Pophanken
Joachim Dr.-Ing. Riecke
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Preussag Weser Zink GmbH
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Preussag Weser Zink GmbH
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Publication of EP0174592A2 publication Critical patent/EP0174592A2/en
Publication of EP0174592A3 publication Critical patent/EP0174592A3/en
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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 an anode for zinc electrolysis and a method for its production.
  • Zinc can be extracted as metal in various ways.
  • An important method for extracting zinc is electrolytic deposition from aqueous zinc salt solutions.
  • This process uses electrolysis cells, which mostly consist of acid-proof concrete with a cathode made of aluminum sheet and an anode made of a lead sheet that contains up to 1% silver.
  • This silver content in the anode results in a special corrosion resistance of the anode and leads to lower lead contents occurring in the cathode zinc than with anodes made of pure lead and brings further advantages.
  • the anode is provided at its upper end or at its upper edge with a copper support rod, the ends of which rest on the edge of the electrolytic cell and carry the anode power connection.
  • the height or level of the electrolyte in the cell is guided or held in such a way that there is a considerable distance between the level and the upper edge of the cells, and the lead sheet forming the anode is cast around the support rod made of copper.
  • the share of silver in that part the anode, which is not immersed in the electrolyte, is practically wasted.
  • the object of the present invention is therefore to create an anode for zinc electrolysis from aqueous zinc salt solutions from a lead sheet with a support rod made of copper, in which silver is only contained in that part of the anode which is immersed in the electrolyte and which is compared to the conventional anode is less expensive, saves valuable, rarer precious metal and can be manufactured in a way that is technically more advanced.
  • This object is achieved in that the silver-containing portion of the anode sheet consisting of lead is poured, continuously cast or rolled and connected to the support bar made of copper by casting or soldering by means of silver-free lead.
  • the part of the anode immersed in the electrolyte is preferably surface-structured or provided with openings.
  • the support rod made of copper is longer than the anode sheet and is free with its two ends on the upper opposite edges of the electrolytic cell.
  • the current is supplied using known devices to one end of the copper support rod.
  • the procedure is such that a corresponding piece forming the anode is inserted into a suitable device from the cast, continuous cast or rolled plate containing the anode, together with the support rod consisting of copper, whereby such an interval remains between one end of the silver-containing anode sheet and the copper rod as is taken into account the level of the electrolyte in the cell, based on the upper edge of the cell, and then the connection between the silver-containing anode sheet and the copper rod is made by casting silver-free lead around it.
  • the head of the anode with the silver-free sprue lead and the support rod made of copper could even be used again by only pouring the silver-containing lead sheet immersed in the electrolyte, which forms the anode, onto the remaining head and at the separation or interface with silver-free lead .
  • the anode Since the anode has a considerable thickness, casting on acts like welding or soldering in other metal structures, whereby the edges of the parts to be connected can be chamfered in accordance with conventional welding technology.
  • the reference numerals 1 denote the walls of the electrolytic cell and the reference numerals 2 the upper edges on which the anode 3 rests with its support rod 4.
  • the dashed line 5 denotes the level of the electrolyte in the cell and further shows that of the entire anode 3 only that piece is immersed in the electrolyte, which is below the dashed line 5.
  • This part of the anode immersed in the electrolyte contains surface structures 6 and recesses 7 for the purpose of better circulability of the electrolyte when voltage is applied and for inserting anode spacers.
  • the power connection for the anode, which is fastened to the copper rod 4, is shown schematically at 8.
  • the anode can be secured by means of devices (not shown) on the upper edge 2 of the electrolytic cell or can be additionally held in order to prevent lateral displacement.
  • That part of the anode which is denoted by 3 1 and which is below the dashed line 5 is made of a silver-containing lead, as described at the beginning, while the other part above the dashed line 5 is silver-free lead.
  • the connection of the silver-containing anode part with the silver-free head part including the support rod is made on the dashed line, for example using a suitable one Device, for example a shape that is designed so that the shape just takes up the upper edge on the dashed line of the silver-containing anode sheet and at a corresponding distance therefrom the support rod 4, and then the cavity, the configuration as in Fig. 4 approximately is poured out with lead.
  • the encapsulation of the support rod made of copper with the reference number 4 can be seen clearly from FIG. 4 and has a club-shaped shape with an adjoining extension 9, which corresponds to the thickness of the anode sheet.
  • the connection with part 3 'then follows on line 5.
  • the shape for producing such a head part and its connection with the silver-containing anode sheet below the line 5 at the edge at 5 could thus be done using a shape that corresponds to this configuration and in which the support rod is inserted so that the end with the electrical Port 8 looks out while the other end is also molded.
  • the cast lead layer is designated by 10 in the figures.
  • the head part As shown in FIG. 4, is attached to the silver-containing part of the anode by welding or soldering, a form of the type described above is not necessary because the connection then takes place in the closer area of line 5.
  • the head part and the corresponding facing edge of the silver-containing anode sheet could be chamfered, for example as indicated in FIG. 4 by the dashed lines at 11, so that there is a large connecting area.
  • the dividing line between the silver-containing anode part and the silver-free head part is dependent can vary from the level of the electrolyte, but care should be taken to ensure that this dividing line is always outside the electrolyte.
  • This anode according to the invention and its special manufacturing process save important raw material and maintain an economical method of production which also saves a considerable amount of energy, combined with a reduction in melting loss.

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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)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

An anode for the electrolysis of zinc from aqueous solution, in which only the lead anode sheet immersed in the electrolyte contains silver, whereas the top part connected to the supporting rod is silver-free, its manufacture being carried out by casting, extruding or rolling the silver-containing anode sheet part and connecting it to the supporting rod by means of a cast-on head piece. On the other hand, the silver-containing anode sheet part can be connected to a finished head piece with supporting rod by casting-on with molten lead or by soldering on. <IMAGE>

Description

Die Erfindung betrifft eine Anode für die Zinkelektrolyse und ein Verfahren zu ihrer Herstellung.The invention relates to an anode for zinc electrolysis and a method for its production.

Zink kann auf verschiedene Art als Metall gewonnen werden. Ein wichtiges Verfahren zur Gewinnung von Zink ist eine elektrolytische Abscheidung aus wäßrigen Zinksalzlösungen. Bei diesem Verfahren werden Elektrolysezellen verwendet, die meistens aus säurefest geschütztem Beton bestehen mit einer Kathode aus Aluminiumblech und einer Anode aus einem Bleiblech, das bis zu 1, % Silber enthält. Dieser Silbergehalt in der Anode bewirkt eine besondere Korrosionsbeständigkeit der Anode und führt dazu, daß im Kathodenzink niedrigere Bleigehalte auftreten als bei Anoden aus Reinblei und bringt weitere Vorteile. Die Anode ist an ihrem oberen Ende oder an ihrem oberen Rand mit einer Tragstange aus Kupfer versehen, die mit ihren Enden auf dem Elektrolysenzellenrand aufliegt und den Anodenstromanschluß trägt.Zinc can be extracted as metal in various ways. An important method for extracting zinc is electrolytic deposition from aqueous zinc salt solutions. This process uses electrolysis cells, which mostly consist of acid-proof concrete with a cathode made of aluminum sheet and an anode made of a lead sheet that contains up to 1% silver. This silver content in the anode results in a special corrosion resistance of the anode and leads to lower lead contents occurring in the cathode zinc than with anodes made of pure lead and brings further advantages. The anode is provided at its upper end or at its upper edge with a copper support rod, the ends of which rest on the edge of the electrolytic cell and carry the anode power connection.

In der Regel ist dabei die Höhe bzw. der Pegel des Elektrolyten in der Zelle so geführt bzw. gehalten, daß zwischen Pegelstand und oberem Rand der Zellen ein beträchtlicher Abstand besteht, und das die Anode bildende Bleiblech ist um die aus Kupfer bestehende Tragstange herumgegossen. Das bedeutet, daß von dem silberhaltigen, die Anode bildenden Bleiblech nur ein Anteil in den Elektrolysten eintaucht, ein restlicher Teil hingegen außerhalb des Elektrolyten sich befindet und weder korrodieren noch Blei in den Elektrolyten abgeben kann, welches zur Kathode wandern könnte. Der Anteil Silber in jenem Teil der Anode, der nicht in den Elektrolyten eintaucht, ist also praktisch verschwendet.As a rule, the height or level of the electrolyte in the cell is guided or held in such a way that there is a considerable distance between the level and the upper edge of the cells, and the lead sheet forming the anode is cast around the support rod made of copper. This means that only a portion of the silver-containing lead sheet forming the anode is immersed in the electrolysts, while a remaining portion is located outside the electrolyte and can neither corrode nor release lead in the electrolyte, which could migrate to the cathode. The share of silver in that part the anode, which is not immersed in the electrolyte, is practically wasted.

Aufgabe der vorliegenden Erfindung ist es daher, eine Anode für die Zinkelektrolyse aus wäßrigen Zinksalzlösungen aus einem Bleiblech mit einer Tragstange aus Kupfer zu schaffen, bei der Silber nur in jenem Teil der Anode enthalten ist, die in den Elektrolyten eintaucht und die gegenüber der herkömmlichen Anode kostengünstiger ist, wertvolles, seltener werdendes Edelmetall einspart und in einer Weise herstellbar ist, die technisch fortschrittlicher ist.The object of the present invention is therefore to create an anode for zinc electrolysis from aqueous zinc salt solutions from a lead sheet with a support rod made of copper, in which silver is only contained in that part of the anode which is immersed in the electrolyte and which is compared to the conventional anode is less expensive, saves valuable, rarer precious metal and can be manufactured in a way that is technically more advanced.

Gelöst wird diese Aufgabe dadurch, daß der silberhaltige Anteil des aus Blei bestehenden Anodenbleches gegossen, stranggegossen oder gewalzt und mit der aus Kupfer bestehenden Tragstange durch Angießen oder Anlöten vermittels silberfreien Bleies verbunden ist.This object is achieved in that the silver-containing portion of the anode sheet consisting of lead is poured, continuously cast or rolled and connected to the support bar made of copper by casting or soldering by means of silver-free lead.

Das in den Elektrolyten eintauchende Teil der Anode ist vorzugsweise oberflächenstrukturiert oder mit Durchbrechungen versehen.The part of the anode immersed in the electrolyte is preferably surface-structured or provided with openings.

Die aus Kupfer bestehende Tragstange ist länger als das Anodenblech breit ist und liegt mit ihren freien beiden Enden auf den oberen gegenüberliegenden Rändern der Elektrolysezelle auf. Die Stromzufuhr erfolgt unter Verwendung an sich bekannter Einrichtungen zu einem Ende der aus Kupfer bestehenden Tragstange.The support rod made of copper is longer than the anode sheet and is free with its two ends on the upper opposite edges of the electrolytic cell. The current is supplied using known devices to one end of the copper support rod.

Zur Herstellung der erfindungsgemäßen Anode für die Zinkelektrolyse geht man so vor, daß von dem gegossenen, stranggegossenen oder gewalzten sitberhaltigen Blech, welches die Anode bilden soll, ein entsprechendes die Anode bildendes Stück in eine geeignete Vorrichtung eingebracht wird zusammen mit der aus Kupfer bestehenden Tragstange, wobei zwischen einem Ende des silberhaltigen Anodenbleches und der Kupferstange ein solcher Abstand verbleibt wie unter Berücksichtigung der Höhe des Elektrolytpegels in der Zelle, bezogen auf den oberen Rand der Zelle, erforderlich und worauf dann die Verbindung zwischen silberhaltigem Anodenblech und Kupferstange durch Umgießen mit silberfreiem Blei hergestellt wird.For the production of the anode for zinc electrolysis according to the invention, the procedure is such that a corresponding piece forming the anode is inserted into a suitable device from the cast, continuous cast or rolled plate containing the anode, together with the support rod consisting of copper, whereby such an interval remains between one end of the silver-containing anode sheet and the copper rod as is taken into account the level of the electrolyte in the cell, based on the upper edge of the cell, and then the connection between the silver-containing anode sheet and the copper rod is made by casting silver-free lead around it.

Auf diese Weise wird nicht nur der Silbergehalt, der in den Anoden erforderlich ist, beträchtlich verringert, etwa um 12 bis 18 %, sondern die Aufarbeitung gebrauchter und verbrauchter Anoden und die Herstellung neuer Anoden wird erheblich vereinfacht.In this way, not only is the silver content required in the anodes considerably reduced, for example by 12 to 18%, but the reprocessing of used and used anodes and the production of new anodes are considerably simplified.

Für die Aufarbeitung der Anoden brauchte an sich nur jener Teil abgetrennt zu werden, der durch die Angußnaht begrenzt ist und der Silber enthält.In order to process the anodes, only that part which is limited by the sprue and which contains silver had to be separated.

Der Kopf der Anode mit dem silberfreien Angußblei und der aus Kupfer bestehenden Tragstange könnte sogar wieder verwendet werden, indem man nur das in den Elektrolyten eintauchende silberhaltige, die Anode bildende Bleiblech an den verbliebenen Kopf und an der Trenn-oder Schnittstelle wieder angießt mit silberfreiem Blei.The head of the anode with the silver-free sprue lead and the support rod made of copper could even be used again by only pouring the silver-containing lead sheet immersed in the electrolyte, which forms the anode, onto the remaining head and at the separation or interface with silver-free lead .

Da die Anode einebeträchtliche Dicke hat, wirkt das Angießen wie das Anschweißen oder Anlöten im sonstigen Metallbau, wobei die Ränder der zu verbindenden Teile entsprechend herkömmlicher Schweißtechnik angefast sein können.Since the anode has a considerable thickness, casting on acts like welding or soldering in other metal structures, whereby the edges of the parts to be connected can be chamfered in accordance with conventional welding technology.

Man kann natürlich auch einen frischen Kopf unter Verwendung einer neuen Kupfertragstange angießen.Of course, you can also pour a fresh head using a new copper support rod.

Die Erfindung wird nun anhand der Zeichnung, die ein Ausführungsbeispie4 zeigt, näher erläutert:

  • In der Zeichnung stellen dar:
  • Fig. 1 eine Ansicht einer Anode gemäß der vorliegenden Erfindung,
  • Fig. 2 eine Draufsicht auf die Anode nach Fig. 1 mit der eingegossenen Tragstange,
  • Fig. 3 eine Seitenansicht der Anode und
  • Fig. 4 einen Schnitt auf der Linie A-B der Fig. 1.
The invention will now be explained in more detail with reference to the drawing, which shows an exemplary embodiment:
  • In the drawing:
  • 1 is a view of an anode according to the present invention.
  • 2 is a plan view of the anode of FIG. 1 with the cast-in support rod,
  • Fig. 3 is a side view of the anode and
  • 4 shows a section on the line AB of FIG. 1.

In Fig. 1 bezeichnen die Bezugszeichen 1 die Wände der Elektrolysezelle und die Bezugszeichen 2 die oberen Ränder, auf denen die Anode 3 mit ihrer Tragstange 4 aufliegt. Die gestrichelte Linie 5 bezeichnet den Pegel des Elektrolyten in der Zelle und zeigt weiter, daß von der gesamten Anode 3 nur jenes Stück in den Elektrolyten eintaucht, was unterhalb der gestrichelten Linie 5 liegt. Dieses in den Elektrolyten eingetauchte Teil der Anode enthält Oberflächenstrukturierungen 6 und Ausnehmungen 7 zum Zwecke der besseren Zirkulierbarkeit des Elektrolyten bei angelegter Spannung und zum Einsetzen von Anodenabstandshaltern. Bei 8 ist schematisch der Stromanschluß für die Anode gezeigt, der an der Kupferstange 4 befestigt ist. Die Anode kann vermittels nicht dargesteltter Einrichtungen am oberen Rand 2 der Elektrolysezelle gesichert oder zusätzlich gehalten sein, um eine seitliche Verschiebung zu verhindern.In Fig. 1, the reference numerals 1 denote the walls of the electrolytic cell and the reference numerals 2 the upper edges on which the anode 3 rests with its support rod 4. The dashed line 5 denotes the level of the electrolyte in the cell and further shows that of the entire anode 3 only that piece is immersed in the electrolyte, which is below the dashed line 5. This part of the anode immersed in the electrolyte contains surface structures 6 and recesses 7 for the purpose of better circulability of the electrolyte when voltage is applied and for inserting anode spacers. The power connection for the anode, which is fastened to the copper rod 4, is shown schematically at 8. The anode can be secured by means of devices (not shown) on the upper edge 2 of the electrolytic cell or can be additionally held in order to prevent lateral displacement.

Erfindungsgemäß ist nun jener Teil der Anode, der mit 31 bezeichnet ist und der unterhalb der gestrichelten Linie 5 liegt, aus einem silberhaltigen Blei hergestellt, wie eingangs beschrieben, während das andere Teil oberhalb der gestrichelten Linie 5 silberfreies Blei ist. Die Verbindung des silberhaltigen Anodenteiles mit dem silberfreien Kopfteil einschließlich Tragstange erfolgt auf der gestrichelten Linie, beispielsweise unter Verwendung einer geeigneten Vorrichtung, beispielsweise einer Form, die so ausgestaltet ist, daß die Form gerade den oberen Rand an der gestrichelten Linie des silberhaltigen Anodenbleches aufnimmt sowie in entsprechendem Abstand dazu die Tragstange 4, und daß dann der Hohlraum, der der Konfiguration wie in Fig. 4 etwa entspricht, mit Blei ausgegossen wird.According to the invention, that part of the anode which is denoted by 3 1 and which is below the dashed line 5 is made of a silver-containing lead, as described at the beginning, while the other part above the dashed line 5 is silver-free lead. The connection of the silver-containing anode part with the silver-free head part including the support rod is made on the dashed line, for example using a suitable one Device, for example a shape that is designed so that the shape just takes up the upper edge on the dashed line of the silver-containing anode sheet and at a corresponding distance therefrom the support rod 4, and then the cavity, the configuration as in Fig. 4 approximately is poured out with lead.

Die Umgießung der Tragstange aus Kupfer mit dem Bezugszeichen 4 ist deutlich aus Fig. 4 zu ersehen und hat keulenförmige Gestalt mit einem daran sich anschließenden Ansatz 9, der der Dicke des Anodenbleches entspricht. Auf der Linie 5 folgt dann die Verbindung mit dem Teil 3'. Die Form zur Herstellung eines solchen Kopfteiles und seine Verbindung mit dem silberhaltigen Anodenblech unterhalb der Linie 5 an dem Rand bei 5 könnte also unter Verwendung einer Form geschehen, die dieser Konfiguration entspricht und in die die Tragstange so eingelegt ist, daß das Ende mit dem elektrischen Anschluß 8 herausschaut, während das andere Ende ebenfalls umgossen ist. Die umgossene Bleischicht ist in den Figuren mit 10 bezeichnet.The encapsulation of the support rod made of copper with the reference number 4 can be seen clearly from FIG. 4 and has a club-shaped shape with an adjoining extension 9, which corresponds to the thickness of the anode sheet. The connection with part 3 'then follows on line 5. The shape for producing such a head part and its connection with the silver-containing anode sheet below the line 5 at the edge at 5 could thus be done using a shape that corresponds to this configuration and in which the support rod is inserted so that the end with the electrical Port 8 looks out while the other end is also molded. The cast lead layer is designated by 10 in the figures.

Bei Anbringung des Kopfteiles, wie es in Fig. 4 dargestellt ist, an dem silberhaltigen Teil der Anode durch Schweißen oder Löten ist eine Form der oben beschriebenen Art nicht erforderlich, weil die Verbindung dann im näheren Bereich der Linie 5 erfolgt. Zu diesem Zweck könnte das Kopfteil als auch der entsprechende zugekehrte Rand des silberhaltigen Anodenbleches abgefast sein, beispielsweise wie in Fig. 4 durch die gestrichelten Linien bei 11 angedeutet, so daß sich eine große Verbindungsfläche ergibt.When the head part, as shown in FIG. 4, is attached to the silver-containing part of the anode by welding or soldering, a form of the type described above is not necessary because the connection then takes place in the closer area of line 5. For this purpose, the head part and the corresponding facing edge of the silver-containing anode sheet could be chamfered, for example as indicated in FIG. 4 by the dashed lines at 11, so that there is a large connecting area.

Es soll hier noch erwähnt werden, daß die Trennungslinie zwischen silberhaltigem Anodenteil und silberfreiem Kopfteil in Abhängigkeit von dem Pegelstand des Elektrolyten variieren kann, jedoch sollte darauf geachtet werden, daß diese Trennungslinie immer außerhalb des Elektrolyten liegt.It should be mentioned here that the dividing line between the silver-containing anode part and the silver-free head part is dependent can vary from the level of the electrolyte, but care should be taken to ensure that this dividing line is always outside the electrolyte.

Durch diese erfindungsgemäße Anode und ihr besonderes Herstellungsverfahren wird wichtiger Rohstoff eingespart und eine wirtschaftliche Fertigungsweise erhalten, die auch in erheblichem Maße Energie einspart, verbunden mit einer Reduzierung des Schmelzverlustes.This anode according to the invention and its special manufacturing process save important raw material and maintain an economical method of production which also saves a considerable amount of energy, combined with a reduction in melting loss.

Claims (7)

1. Anode für die Zinkelektrolyse aus wäßriger Lösung, bestehend aus einem silberhaltigen Bleiblech, dadurch gekennzeichnet, daß der silberhaltige Anteil (3') des aus Blei bestehenden Anodenbleches (3) gegossen, stranggegossen oder gewalzt ist und mit der aus Kupfer bestehenden Tragstange (4) durch Angießen vermittels silberfreien Bleies verbunden ist.1. Anode for zinc electrolysis from an aqueous solution consisting of a silver-containing lead sheet, characterized in that the silver-containing portion (3 ') of the anode sheet (3) consisting of lead is cast, continuously cast or rolled and with the support rod made of copper (4 ) is connected by casting using silver-free lead. 2. Anode nach Anspruch 1, dadurch gekennzeichnet, daß die Kupferstange an einem Ende zur Aufnahme des elektrischen Anschlusses (8) frei zutage tritt.2. Anode according to claim 1, characterized in that the copper rod is freely exposed at one end for receiving the electrical connection (8). 3. Anode nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der silberhaltige Anteil (31) des aus Blei bestehenden Anodenbleches mit einem aus Tragstange und silberfreiem Blei bestehenden Anodenkopf durch Anschweißen oder Anlöten verbunden ist.3. Anode according to claim 1 and 2, characterized in that the silver-containing portion (31) of the anode sheet consisting of lead is connected to an anode head consisting of a support rod and silver-free lead by welding or soldering. 4. Anode nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Verbindungslinie zwischen den beiden Anodenteilen auf einer Linie (5) erfolgt, die oberhalb des Pegels des Elektrolyten in der Elektrolysezelle liegt.4. Anode according to claim 1 to 3, characterized in that the connecting line between the two anode parts takes place on a line (5) which lies above the level of the electrolyte in the electrolytic cell. 5. Anode nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die zur Verbindung auf der Linie (5) einander zugekehrten Anodenteile abgefast (11) sind.5. Anode according to claim 1 to 4, characterized in that the anode parts facing each other for connection on the line (5) are chamfered (11). 6. Verfahren zur Herstellung einer Anode für die Zinkelektrolyse gemäß Anspruch 1 bis 5, dadurch gekennzeichnet, daß von dem gegossenen, stranggegossenen oder gewalzten silberhaltigen Blech ein entsprechendes die Anode bildendes Stück in eine Vorrichtung eingebracht wird zusammen mit der aus Kupfer bestehenden Tragstange und worauf beide Teile durch Umgießen mit silberfreiem Blei verbunden werden. 6 . A method of manufacturing an anode for zinc electrolysis according to claims 1 to 5, characterized in that a corresponding piece forming the anode is introduced into a device from the cast, continuous cast or rolled silver-containing sheet together with the support rod consisting of copper and then by both parts Pouring around with silver-free lead. 7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß zunächst in einer Vorrichtung oder Form ein aus silberfreiem Blei bestehender Anodenkopf mit der Tragstange aus Kupfer hergestellt wird und dieser dann mit seinem von der Kupfertragstange abgelegenen freien Rand mit dem gegossenen, stranggegossenen oder gewalzten, die eigentliche Anode bildenden silberhaltigen Bleiblech durch Angießen oder Anlöten verbunden wird.7. The method according to claim 6, characterized in that an anode head made of silver-free lead with the support rod made of copper is first produced in a device or mold and this then with its free edge remote from the copper support rod with the cast, continuously cast or rolled, the actual anode forming silver-containing lead sheet is connected by casting or soldering.
EP85111105A 1984-09-13 1985-09-03 Anode for zinc electrolysis and method for its preparation Withdrawn EP0174592A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3433587 1984-09-13
DE19843433587 DE3433587A1 (en) 1984-09-13 1984-09-13 ANODE FOR ZINCEL ELECTROLYSIS AND METHOD FOR THEIR PRODUCTION

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EP0174592A2 true EP0174592A2 (en) 1986-03-19
EP0174592A3 EP0174592A3 (en) 1987-10-14

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EP (1) EP0174592A3 (en)
DE (1) DE3433587A1 (en)
ES (1) ES8700335A1 (en)
FI (1) FI853385L (en)
NO (1) NO853524L (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089455A (en) * 1953-01-21 1955-03-17 Electro Manganese Corp Composite anode for the preparation of manganese by electrolysis
GB2001347A (en) * 1977-07-20 1979-01-31 Imp Metal Ind Kynoch Ltd Electrode and hanger bar therefor
FR2492415A1 (en) * 1980-10-20 1982-04-23 Samim Spa
EP0053377A1 (en) * 1980-11-28 1982-06-09 Rsr Corporation Electrowinning anode and method of manufacture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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FR1089455A (en) * 1953-01-21 1955-03-17 Electro Manganese Corp Composite anode for the preparation of manganese by electrolysis
GB2001347A (en) * 1977-07-20 1979-01-31 Imp Metal Ind Kynoch Ltd Electrode and hanger bar therefor
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EP0174592A3 (en) 1987-10-14
FI853385L (en) 1986-03-14
FI853385A0 (en) 1985-09-04
ES8700335A1 (en) 1986-10-01
ES546845A0 (en) 1986-10-01
DE3433587A1 (en) 1986-03-20
NO853524L (en) 1986-03-14
DE3433587C2 (en) 1988-06-16

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