DE965534C - Process for silver separation from alloys with a high content of silver - Google Patents

Process for silver separation from alloys with a high content of silver

Info

Publication number
DE965534C
DE965534C DED15126A DED0015126A DE965534C DE 965534 C DE965534 C DE 965534C DE D15126 A DED15126 A DE D15126A DE D0015126 A DED0015126 A DE D0015126A DE 965534 C DE965534 C DE 965534C
Authority
DE
Germany
Prior art keywords
silver
alloys
electrolyte
high content
added
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
DED15126A
Other languages
German (de)
Inventor
Dipl-Chem Otto Schulz
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.)
Demag Elektrometallurgie GmbH
Original Assignee
Demag Elektrometallurgie 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 Demag Elektrometallurgie GmbH filed Critical Demag Elektrometallurgie GmbH
Priority to DED15126A priority Critical patent/DE965534C/en
Application granted granted Critical
Publication of DE965534C publication Critical patent/DE965534C/en
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
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals

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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)

Description

Verfahren zur Silberscheidung aus stark silberhaltigen Legierungen Die Erfindung geht aus von Verfahren, aus stark silberhaltigen Legierungen, insbesondere Kupferlegierungen, das Silber auf elektrolytischem Wege aus schwefelsauren Elektrolyten abzuscheiden, wobei der Silbergehalt der Legierung etwa 5 bis 25 % ausmacht. Dieses Verfahren hat den Vorteil, daß von der Anode, welche aus der Legierung besteht, nach der elektrolytischen Behandlung ein Skelett aus Silber bestehenbleibt, während die übrigen Bestandteile zur Kathode wandern oder in Lösung gehen.Process for differentiating silver from alloys with a high content of silver The invention is based on processes made from alloys with a high content of silver, in particular Copper alloys, the silver electrolytically from sulfuric acid electrolytes to be deposited, the silver content of the alloy making up about 5 to 25%. This The method has the advantage that from the anode, which consists of the alloy, after the electrolytic treatment a skeleton of silver remains while the remaining components migrate to the cathode or go into solution.

Es hat sich gezeigt, daß trotz- der starken Konzentration des Silbers an der Anode zwar nur geringe, aber unter Umständen doch störende Silbermengen an der Kathode abgeschieden werden und so das Kathodenkupfer etwas verunreinigen.It has been shown that despite the high concentration of silver at the anode there is only a small amount of silver, but in some cases disturbing amounts the cathode are deposited and thus contaminate the cathode copper somewhat.

Bei anderen elektrolytischen Verfahren ist es bekannt, Verunreinigungen der Kathode durch elektrische Maßnahmen (Veränderung der Stromdichte geringer Spannung) oder mechanisch, -beispielsweise durch zwischengeschaltete Diaphragmen u. dgl. zu vermeiden. Die Erfindung geht einen anderen Weg und besteht darin, dem Elektrolyt einen Zusatz eines Halogenids zu geben. Es zeigt sich, daß dieser Zusatz nicht nur das kathodische Abscheiden des Silbers hemmt, sondern sogar schon verhindert, daß überhaupt das Silber von der Anode aus in Lösung geht. Man erreicht also durch den Halogeui:dzusa,tz sowohl ein besonders reines, Kathodenkupfer als auch die weitgehende und einfache Gewinnung des Silbers aus der Legierung.In other electrolytic processes, it is known to have impurities the cathode by electrical measures (change in the current density of low voltage) or mechanically, for example by means of interposed diaphragms and the like avoid. The invention takes a different approach and consists in the electrolyte to give an addition of a halide. It turns out that this addition is not only inhibits the cathodic deposition of silver, but even prevents it the silver goes into solution at all from the anode. One achieves so by the Halogeui: dzusa, tz both a particularly pure, cathode copper as well the extensive and simple extraction of silver from the alloy.

Bevorzugt werden als Halogenide Bromide, wie KB!r, NaBr, oder Chloride, wie KCI, NaCl, oder die entsprechenden Halogenwasserstoffsäuren.Preferred halides are bromides, such as KB! R, NaBr, or chlorides, such as KCl, NaCl, or the corresponding hydrohalic acids.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Silberscheidung aus stark silberhaltigen Legierungen, insbesondere Kupferlegierungen, mittels der Elektrolyse, dadurch gekennzeichnet, daß dem Elektrolyt ein geringer Zusatz eines Halogenids zugegeben wird, welcher das anodische Inlösunggehen des Silbers der aus der Legierung bestehenden Anode verhindert. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß dem Elektrolyt Bromid, z. B. KBr oder NaB:r, zugesetzt wird. 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß dem Elektrolyt Chlorid, z. B. K Cl. oder Na Cly zuggesetzt wird.. q.. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß dem Elektrolyt Halogenwasserstoffsäure zugesetzt wird. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 676 676.PATENT CLAIMS: i. Process for differentiating silver from those with a high content of silver Alloys, in particular copper alloys, by means of electrolysis, characterized in that that a small addition of a halide is added to the electrolyte, which the anodic dissolution of the silver of the alloy anode prevented. a. Method according to claim i, characterized in that the electrolyte Bromide, e.g. B. KBr or NaB: r, is added. 3. The method according to claim i, characterized characterized in that the electrolyte is chloride, e.g. B. K Cl. or Na Cly is added .. q .. The method according to claim i, characterized in that the electrolyte hydrohalic acid is added. Considered publications: German Patent No. 676 676.
DED15126A 1953-05-24 1953-05-24 Process for silver separation from alloys with a high content of silver Expired DE965534C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED15126A DE965534C (en) 1953-05-24 1953-05-24 Process for silver separation from alloys with a high content of silver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED15126A DE965534C (en) 1953-05-24 1953-05-24 Process for silver separation from alloys with a high content of silver

Publications (1)

Publication Number Publication Date
DE965534C true DE965534C (en) 1957-06-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DED15126A Expired DE965534C (en) 1953-05-24 1953-05-24 Process for silver separation from alloys with a high content of silver

Country Status (1)

Country Link
DE (1) DE965534C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE676676C (en) * 1935-01-12 1939-06-09 Siemens & Halske Akt Ges Process for the electrolytic separation of precious metal alloys

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE676676C (en) * 1935-01-12 1939-06-09 Siemens & Halske Akt Ges Process for the electrolytic separation of precious metal alloys

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