DE522513C - Digestion of tin-containing alloys and ashes - Google Patents

Digestion of tin-containing alloys and ashes

Info

Publication number
DE522513C
DE522513C DE1930522513D DE522513DD DE522513C DE 522513 C DE522513 C DE 522513C DE 1930522513 D DE1930522513 D DE 1930522513D DE 522513D D DE522513D D DE 522513DD DE 522513 C DE522513 C DE 522513C
Authority
DE
Germany
Prior art keywords
tin
digestion
ashes
containing alloys
compounds
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
DE1930522513D
Other languages
German (de)
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.)
KAMILL KOHN DR ING
Original Assignee
KAMILL KOHN DR ING
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 KAMILL KOHN DR ING filed Critical KAMILL KOHN DR ING
Application granted granted Critical
Publication of DE522513C publication Critical patent/DE522513C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B25/00—Obtaining tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B25/00—Obtaining tin
    • C22B25/06—Obtaining tin from scrap, especially tin scrap
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Description

Aufschluß von zinnhaltigen Legierungen und Aschen Nach den bisher bekannten Methoden kann man zinnhaltige Legierungen und Aschen, wie Lagermetall, Lötzinn u. a., mit Ätzalkalilaugen bei erhöhter Temperatur (unter Druck) in Gegenwart von Oxydationsmitteln derartig zersetzen, daß teilweise Zinn und Blei in Lösung gehen.Digestion of tin-containing alloys and ashes According to the previous known methods, tin-containing alloys and ashes, such as bearing metal, Tin solder, among other things, with caustic alkali solutions at elevated temperature (under pressure) in the presence of oxidizing agents to such an extent that tin and lead are partly in solution walk.

Nach eigener Erfindung wird der Aufschluß der erwähnten zinnhaltigen Legierungen mit alkalischen Laugen derartig durchgeführt, daß nur das Zinn praktisch vollständig in Lösung geht, wogegen die anderen Metalle ungelöst bleiben. Die praktische Bedeutung dieses Verfahrens besteht darin, daß es möglich ist, durch einen Arbeitsgang das Zinn aus den zinnhaltigen Legierungen und Aschen herauszulösen. Der Grundgedanke der Erfindung besteht darin, daß bei dem Aufschluß nur derartige Oxydationsmittel verwendet werden, welche bei den gegebenen Umständen auf andere Metalle außer Zinn nicht wirken, sondern nur den bei der Auflösung des Zinns entstehenden Wasserstoff oxydieren und so den Aufschluß beschleunigen. Gemäß der Erfindung eignen sich als Oxydationsmittel für die genannten Zwecke Verbindungen des dreiwertigen Eisens, wie z. B. Eisenchlorid, Kiesabbrände u. a. Ausführungsbeispiel Auf 500 kg Lagermetall mit etwa 3o °/a Zinngehalt läßt man x5oo kg einer 35°,loigen Ätznatronlauge in Gegenwart von 7o kg Kiesabbränden bei einem Druck von 15 atü durch 5 bis 7 Stunden unter ständigem Rühren einwirken. Nach Beendigung der Reaktion wird die alles Zinn als Stannat enthaltende Lösung von dem Rückstand, der alles Blei, Antimon und Kupfer beinhaltet, abgetrennt. Die Stannatlösung und das ungelöste Gemisch werden nach bekannter Art auf einzelne Metalle oder deren Salze verarbeitet.According to our own invention, the above-mentioned tin-containing alloys are digested with alkaline lyes in such a way that only the tin is practically completely dissolved, while the other metals remain undissolved. The practical importance of this process is that it is possible to dissolve the tin from the tin-containing alloys and ashes in one operation. The basic idea of the invention is that only those oxidizing agents are used in the digestion which, under the given circumstances, do not act on other metals besides tin, but only oxidize the hydrogen produced during the dissolution of the tin and thus accelerate the digestion. According to the invention, compounds of trivalent iron, such as, for. B. iron chloride, gravel burns, etc. Embodiment 500 kg of bearing metal with about 30 ° / a tin content is allowed to act x5oo kg of 35 °, loigen caustic soda in the presence of 70 kg of gravel burn at a pressure of 15 atm for 5 to 7 hours with constant stirring. After the reaction has ended, the solution containing all tin as stannate is separated from the residue which contains all lead, antimony and copper. The stannate solution and the undissolved mixture are processed into individual metals or their salts in a known manner.

Claims (1)

PATENTANSPRUCH: Aufschluß von zinnhaltigen Legierungen und Aschen mit alkalischen Laugen bei erhöhter Temperatur unter Druck bei Gegenwart von Oxydationsmitteln, dadurch gekennzeichnet, daß als Oxydationsmittel dreiwertige Verbindungen des Eisens oder Stoffe, die diese Verbindungen enthalten, verwendet werden.PATENT CLAIM: Digestion of tin-containing alloys and ashes with alkaline lyes at elevated temperature under pressure in the presence of oxidizing agents, characterized in that trivalent iron compounds are used as the oxidizing agent or substances containing these compounds are used.
DE1930522513D 1929-04-03 1930-03-13 Digestion of tin-containing alloys and ashes Expired DE522513C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS522513X 1929-04-03

Publications (1)

Publication Number Publication Date
DE522513C true DE522513C (en) 1931-04-10

Family

ID=5453352

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930522513D Expired DE522513C (en) 1929-04-03 1930-03-13 Digestion of tin-containing alloys and ashes

Country Status (1)

Country Link
DE (1) DE522513C (en)

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