DE312138C - - Google Patents

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Publication number
DE312138C
DE312138C DENDAT312138D DE312138DA DE312138C DE 312138 C DE312138 C DE 312138C DE NDAT312138 D DENDAT312138 D DE NDAT312138D DE 312138D A DE312138D A DE 312138DA DE 312138 C DE312138 C DE 312138C
Authority
DE
Germany
Prior art keywords
zinc
cables
wires
copper
recovery
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
DENDAT312138D
Other languages
German (de)
Publication date
Application granted granted Critical
Publication of DE312138C publication Critical patent/DE312138C/de
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00Obtaining zinc or zinc oxide
    • C22B19/30Obtaining zinc or zinc oxide from metallic residues or scraps
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B15/00Apparatus or processes for salvaging material from cables
    • H01B15/003Apparatus or processes for salvaging material from cables by heating up
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/82Recycling of waste of electrical or electronic equipment [WEEE]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Die Erfindung betrifft die Wiedergewinnung von Zink aus Zinkkabeln, Hausleitungen u. dgl., und zwar in Form von metallischem Zink. Infolge der durch den Krieg herbeigeführten Knappheit an Kupfer ist man seit einiger Zeit gezwungen, das Kupfer in elektrischen Kabeln und Leitungen durch Zinkdraht zu ersetzen, welcher in ähnlicher Weise wie die Kupferdrähte in Kupferkabeln mit Isolätionsmaterial aus geteerter Baumwolle, Jute o. dgl. umkleidet wird. Die Zinkkabel und Leitungen werden im Laufe der Zeit durch Verschleiß abgenutzt. Zur Wiedergewinnung des Zinks lag es nahe, einen analogen Weg wie bei der Aufarbeitung des Kupfers in Kupferkabeln zu wählen, nämlich die abgenutzten Kabel zu glühen, um das geteerte Isolationsgewebe vollständig zu verbrennen und zu zerstören. • Dieser Weg ist aber bei Zinkkabeln ungangbar, denn er hat den Nachteil, daß hierbei das Zink zu Zinkoxyd verbrennt, welches sich teilweise verflüchtigt und kondensiert werden muß und teilweise im verkohlten Rückstande als schlecht zu verarbeitende Masse zurückbleibt. Das Zinkoxyd muß alsdann hüttenmännisch aufgearbeitet werden, was mit erheblichen Kosten verknüpft ist.The invention relates to the recovery of zinc from zinc cables, house pipes and the like. namely in the form of metallic zinc. As a result of those brought about by the war Shortages of copper have for some time forced the copper into electrical ones Replace cables and wires with zinc wire, which is similar to the Copper wires in copper cables with insulation material made of tarred cotton, jute or the like. is changed. The zinc cables and wires will wear out over time worn. For the recovery of the zinc it was obvious to use an analogous way to that Reconditioning the copper in copper cables to choose, namely the worn cables too glow to completely burn and destroy the tarred insulation fabric. • However, this path is impracticable with zinc cables, because it has the disadvantage that here the zinc burns to zinc oxide, which is partially volatilized and condensed must and partly remains in the charred residue as a mass that is difficult to process. The zinc oxide then has to be worked up by ironworkers, which is considerable Cost is linked.

Vorliegende Erfindung bezweckt die Wiedergewinnung von Zink aus unbrauchbar gewordenen Zinkkabeln und Leitungen in metallischer Form. Zu diesem Zweck schlägt die Erfindung einen anderen Weg ein, wobei die isolierende Umhüllung nur teilweise zerstört, bis sie flüssig bzw. bröcklig mürbe geworden ist, ohne daß das Zink sich chemisch verändert oder oxydiert. Dies geschieht in der Weise, daß man das Zinkkabel bis auf eine unterhalb des Schmelzpunktes des Zinks belegene Temperatur in einer gegen die Oxydation des Zinks indifferenten Atmosphäre erhitzt. Da das Zink bei 417 ° C schmilzt, so darf die Erhitzung bis auf höchstens 4000 C gesteigert werden. Zweckmäßig benutzt man eine Erhitzung zwischen 380 bis 400 ° C, wobei man die Temperatur durch geeignete Wärmemesser regelt.. Durch die Erhitzung schmilzt der Teer und fließt ab, während die Baumwolle-, Jute- oder ähnliche Gewebehülle zerstört und mürbe wird, so daß sie durch Klopfen 0. dgl. von der Zinkseele mechanisch abgeschieden werden kann. Der gegen Oxydation geschützte, erhitzte Zinkdraht (man verwendet als indifferentes Gas zweckmäßig Stick- ,V stoff) erleidet durch die Erhitzung keine Veränderung. Nach Abtrennung der zermürbten Begleitmasse erhält man den Zinkdraht in metallischer Form, aus welcher durch einfaches Umschmelzen wieder raffiniertes Zink erhalten werden kann.The present invention aims at the recovery of zinc from unusable zinc cables and wires in metallic form. For this purpose, the invention proposes a different approach, the insulating covering only partially destroyed until it has become liquid or crumbly and crumbly without the zinc changing chemically or oxidizing. This is done in such a way that the zinc cable is heated to a temperature below the melting point of the zinc in an atmosphere that is indifferent to the oxidation of the zinc. Because the zinc melts at 417 ° C, the heating may be increased up to a maximum of 400 0 C. It is advisable to use heating between 380 and 400 ° C, the temperature being controlled by suitable heat meters. The heating melts the tar and flows off, while the cotton, jute or similar fabric cover is destroyed and crumbly, so that it becomes crumbly can be mechanically separated from the zinc core by tapping. The heated zinc wire, which is protected against oxidation (nitrogen or V material is used as an indifferent gas), does not suffer any change as a result of the heating. After separating the crushed accompanying mass, the zinc wire is obtained in metallic form, from which refined zinc can be obtained again by simple remelting.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Wiedergewinnung von Zink aus unbrauchbar gewordenen Zinkkabeln oder Leitungsdrähten, dadurch ge- kennzeichnet, daß man dieselben in einer Atmosphäre gegen Zinkmetall indifferenter ; Gase im wesentlichen bis unterhalb des Schmelzpunktes von Zink erhitzt, wobei das Zink in metallischem Zustande zurückbleibt, während die das Zink umhüllenden" Isoliermassen, wie Teer, schmelzen und abfließen oder, wie Webstoffe, verkohlen und mechanisch abgetrennt werden können. ■Process for the recovery of zinc from unusable zinc cables or wires, thereby indicates that they are more indifferent to zinc metal in an atmosphere; Gases essentially heated to below the melting point of zinc, the zinc remaining in a metallic state, while the "insulating masses" enveloping the zinc, such as tar, melt and run off or, like woven fabrics, char and can be separated mechanically. ■
DENDAT312138D Expired DE312138C (en)

Publications (1)

Publication Number Publication Date
DE312138C true DE312138C (en) 1900-01-01

Family

ID=565088

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT312138D Expired DE312138C (en)

Country Status (1)

Country Link
DE (1) DE312138C (en)

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