DE973254C - Process for purifying cadmium and selenium - Google Patents

Process for purifying cadmium and selenium

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Publication number
DE973254C
DE973254C DEL8168A DEL0008168A DE973254C DE 973254 C DE973254 C DE 973254C DE L8168 A DEL8168 A DE L8168A DE L0008168 A DEL0008168 A DE L0008168A DE 973254 C DE973254 C DE 973254C
Authority
DE
Germany
Prior art keywords
vol
edition
condensation surface
selenium
steam flow
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
DEL8168A
Other languages
German (de)
Inventor
Werner Dr Phil Koch
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL8168A priority Critical patent/DE973254C/en
Application granted granted Critical
Publication of DE973254C publication Critical patent/DE973254C/en
Expired legal-status Critical Current

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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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • C01B19/02—Elemental selenium or tellurium
    • 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
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/04—Obtaining zinc by distilling
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Description

Zum Reinigen von Substanzen aller Art, insbesondere von Kadmium und Selen, waren bisher neben den chemischen Verfahren physikalische Verfahren üblich. Besonders bei der Reinigung von Metallen verwendete man physikalische Mittel, wie z. B. die Destillation im Hochvakuum, bei der das verdampfte Gut auf Kondensationsflächen niedergeschlagen wurde. Dies Verfahren hatte jedoch den Mangel, daß Verunreinigungen nicht ausschließlich im Rückstand angereichert wurden, sondern sich auch in störendem Maße im Kondensat wiederfanden, so daß es oft erst nach mehrfacher Destillation möglich war, die zu reinigende Substanz mit der gewünschten Reinheit darzustellen.For cleaning all kinds of substances, especially cadmium and Selenium, in addition to chemical processes, physical processes have been common up to now. Particularly when cleaning metals, physical means were used, such as z. B. the distillation in a high vacuum, in which the evaporated material on condensation surfaces was knocked down. This method, however, has had the defect that impurities were not only enriched in the residue, but also in disturbing ones Measures found in the condensate, so that it is often only after multiple distillation it was possible to present the substance to be cleaned with the desired purity.

Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Reinigen von Kadmium und Selen durch Destillation, das sich von den bereits bekannten dadurch unterscheidet, daß die Kondensationsfläche auf einer dicht unter dem Schmelzpunkt der zu reinigenden Substanz liegenden Temperatur gehalten wird.The present invention relates to a method of cleaning of cadmium and selenium by distillation, which thereby differs from the already known differs in that the condensation surface is on a level just below the melting point the temperature to be cleaned is maintained.

Dabei ist es. besonders vorteilhaft, die einzelnen Zonen der Kondensationsfläche auf in Richtung des Dampfstromes fallenden Temperaturen zu halten.It is there. the individual zones of the condensation surface are particularly advantageous to keep temperatures falling in the direction of the steam flow.

Dazu wird die Einrichtung zur Durchführung des Verfahrens zweckmäßig so angelegt, daß die Kondensationsfläche in Richtung des Dampfstromes in mehrere voneinander trennbare Abschnitte unterteilt ist.For this purpose, the device for carrying out the method is expedient laid out so that the condensation surface in the direction of the steam flow in several separable sections is divided.

Es empfiehlt sich, Heizvorrichtungen vorzusehen, durch die die einzelnen Zonen der Kondensationsfläche auf in Richtung des Dampfstromes fallenden Temperaturen gehalten werden. Durch dies Verfahren wird erreicht, daß neben der Reinigung durch Destillation. noch eine Reinigung bei der Kristallisation erfolgt.It is advisable to provide heating devices through which the individual Zones of the condensation surface on temperatures falling in the direction of the steam flow being held. This process ensures that in addition to cleaning through Distillation. cleaning is also carried out during crystallization.

Die Figur zeigt in zum Teil schematischer Darstellung ein Ausführungsbeispiel gemäß der Erfindung.The figure shows an exemplary embodiment in a partially schematic representation according to the invention.

Das Vorratsgefäß i mit der zu vereinigenden Substanz 2 ist im unteren Teil 3 des Gesamtbehälters 8 untergebracht. Der Kragen 4 trägt die erste Kondensationsfläche 5, die ihrerseits über der Verjüngung 6 eine weitere Kondensationsfläche 7 trägt. Um eine Diffusion des Pumpenmaterials und des Dampfes zu vermeiden, wird der Vakuumbehälter 8 mit dem Kühlmantel 9 gekühlt.The storage vessel i with the substance 2 to be combined is in the lower one Part 3 of the entire container 8 housed. The collar 4 carries the first condensation surface 5, which in turn carries a further condensation surface 7 above the taper 6. In order to avoid diffusion of the pump material and the steam, the vacuum container 8 cooled with the cooling jacket 9.

Claims (3)

PATENTANSPRÜCHE: z. Verfahren zum Reinigen von Kadmium und Selen durch Destillation, dadurch gekennzeichnet, daß die Kondensationsfläche auf einer dicht unter dem Schmelzpunkt der zu reinigenden Substanz liegende Temperatur gehalten wird. PATENT CLAIMS: e.g. Process for purifying cadmium and selenium by Distillation, characterized in that the condensation surface on a tight kept below the melting point of the substance to be cleaned lying temperature will. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die einzelnen Zonen der Kondensationsfläche auf in Richtung des Dampfstromes fallenden Temperaturen gehalten werden. 3. Einrichtung zur Durchführung des Verfahrens nach Anspruch i und 2, dadurch gekennzeichnet, daß die Kondensationsfläche in Richtung des Dampfstromes in mehrere voneinander trennbare Abschnitte unterteilt ist. 4. Einrichtung nach Anspruch 3, dadurch gekennzeichnet, daß Heizvorrichtungen vorgesehen sind, durch die die einzelnen Zonen der Kondensationsfläche auf in Richtung des Dampfstromes fallenden Temperaturen gehalten werden. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 579 776, 618 873, 62o 264, 622 4/73; britische Patentschriften Nr. 6o6 636, 6o6 637, 6o6 638, 6o6 639, 6o6 64o, 6o6 641; Tafel, »Lehrbuch der Metallhüttenkunde<<, ,>. Auflage, Bd. 2. The method according to claim i, characterized in that the individual zones of the condensation surface are kept at temperatures falling in the direction of the steam flow. 3. Device for performing the method according to claim i and 2, characterized in that the condensation surface is divided into several separable sections in the direction of the steam flow. 4. Device according to claim 3, characterized in that heating devices are provided through which the individual zones of the condensation surface are kept at temperatures falling in the direction of the steam flow. Considered publications: German Patent Nos. 579 776, 618 873, 62o 264, 622 4/73; British Patent Nos. 6o6 636, 6o6 637, 6o6 638, 6o6 639, 6o6 64o, 6o6 641; Table, »Textbook of Metallurgy <<,, >. Edition, vol. 3, S. 449, 451; Gmelin-Handbuch, System Nr. io, Selen, Teil A, Lieferung 3, S. 448 bis 451, 467 bis 469; D'Ans und Lax, »Taschenbuch für Chemiker und Physiker«, 1949, 2. Auflage, S. 222, 86q.; Römpp, »Chemie-Lexikon« I, Stuttgart, S. 396; Lunge-Köhler, »Die Industrie des Steinkohlenteers und des Ammoniaks«, 5. Auflage, igi2, Bd. i, S. 748, 750, 749, 887 bis 889; Ullmann, »Enzyklopädie der techn. Chemie:<, 2. Auflage, Bd. III, S. 622, Bd. V, S. 810; 3. Auflage, 1951, Bd. i, S.239, 335# 429 bis 432, 687 bis 692; »Zeitschrift f. anorgan. Chemie«, Bd. 249, 19421 S. 166.3, pp. 449, 451; Gmelin Handbook, System No. io, Selenium, Part A, Delivery 3, pp. 448 to 451, 467 to 469; D'Ans and Lax, "Taschenbuch für Chemiker und Physiker", 1949, 2nd edition, p. 222, 86q .; Römpp, "Chemie-Lexikon" I, Stuttgart, p. 396; Lunge-Koehler, "The industry of coal tar and ammonia", 5th edition, igi2, vol. I, p. 748, 75 0 , 749, 887 to 889; Ullmann, »Encyclopedia of techn. Chemistry: <, 2nd edition, Vol. III, p. 622, Vol. V, p. 810; 3rd Edition, 1951, Vol. I, pp 239, 335 # 429 to 432, 687 to 692; »Journal for inorganic. Chemistry ", Vol. 249, 19421 p. 166.
DEL8168A 1951-01-25 1951-01-25 Process for purifying cadmium and selenium Expired DE973254C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL8168A DE973254C (en) 1951-01-25 1951-01-25 Process for purifying cadmium and selenium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL8168A DE973254C (en) 1951-01-25 1951-01-25 Process for purifying cadmium and selenium

Publications (1)

Publication Number Publication Date
DE973254C true DE973254C (en) 1959-12-31

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DEL8168A Expired DE973254C (en) 1951-01-25 1951-01-25 Process for purifying cadmium and selenium

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579776C (en) * 1932-07-02 1933-07-05 New Jersey Zinc Co Process for removing cadmium from zinc
DE618873C (en) * 1933-05-26 1935-09-17 New Jersey Zinc Co Method and device for cleaning zinc
DE620264C (en) * 1933-04-28 1935-10-17 New Jersey Zinc Co Method and device for cleaning zinc by reflux condensation
DE622473C (en) * 1933-04-06 1935-12-02 New Jersey Zinc Co Method and device for purifying zinc by distillation and reflux condensation
GB606637A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Production of magnesium and apparatus therefor
GB606641A (en) * 1942-02-05 1948-08-18 Honorary Advisory Council Sci Method and apparatus for producing magnesium
GB606638A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Apparatus for the recovery of volatilizable metals
GB606639A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Apparatus for the recovery of volatilizable metals
GB606636A (en) * 1941-10-22 1948-08-18 Honorary Advisory Council Sci Apparatus for recovering volatilizable metals
GB606640A (en) * 1942-01-13 1948-08-18 Honorary Advisory Council Sci Direct production of ductile magnesium

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579776C (en) * 1932-07-02 1933-07-05 New Jersey Zinc Co Process for removing cadmium from zinc
DE622473C (en) * 1933-04-06 1935-12-02 New Jersey Zinc Co Method and device for purifying zinc by distillation and reflux condensation
DE620264C (en) * 1933-04-28 1935-10-17 New Jersey Zinc Co Method and device for cleaning zinc by reflux condensation
DE618873C (en) * 1933-05-26 1935-09-17 New Jersey Zinc Co Method and device for cleaning zinc
GB606636A (en) * 1941-10-22 1948-08-18 Honorary Advisory Council Sci Apparatus for recovering volatilizable metals
GB606637A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Production of magnesium and apparatus therefor
GB606638A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Apparatus for the recovery of volatilizable metals
GB606639A (en) * 1941-12-18 1948-08-18 Honorary Advisory Council Sci Apparatus for the recovery of volatilizable metals
GB606640A (en) * 1942-01-13 1948-08-18 Honorary Advisory Council Sci Direct production of ductile magnesium
GB606641A (en) * 1942-02-05 1948-08-18 Honorary Advisory Council Sci Method and apparatus for producing magnesium

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