AT36793B - Process for the production of pure zinc sulfide. - Google Patents

Process for the production of pure zinc sulfide.

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Publication number
AT36793B
AT36793B AT36793DA AT36793B AT 36793 B AT36793 B AT 36793B AT 36793D A AT36793D A AT 36793DA AT 36793 B AT36793 B AT 36793B
Authority
AT
Austria
Prior art keywords
lead
production
precipitated
pure zinc
zinc sulfide
Prior art date
Application number
Other languages
German (de)
Inventor
Joannes Claude Antoine Meyer
Original Assignee
Joannes Claude Antoine Meyer
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 Joannes Claude Antoine Meyer filed Critical Joannes Claude Antoine Meyer
Application granted granted Critical
Publication of AT36793B publication Critical patent/AT36793B/en

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Description

  

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 Magnesium sind im allgemeinen in Zinlterzen nur in sehr geringer Menge vorhanden und der Kalk ist unter b.) durch die Schwefelsäure fast zur Gänze a, Is Kalziumsulfat aus- 
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 säure wird durch den Kalk und das Blei des Erzes, welchem man, wenn nötig, Kalk zufügt, ausgefällt. 



   Hierauf beginnt die vorstehend geschilderte Reihe von Vorgängen von neuem. 



   Man könnte die Schwefelsäure zwischen den Operationen   b.)   und c.) durch Kalk ausfällen, doch müsste man sehr reinen Kalk nehmen. Ist nach einer gewissen Anzahl Operationen die Flüssigkeit an Mangan und Magnesium angereichert worden, so kann durch Destillieren nach Zusatz von Schwefelsäure eine salzfreie, wässerige Lösung von Essigsäure regeneriert werden.   e. ) Das unter c.) erhaltene wasserhaltige Zinksulfid wird bei verhältnismässig niedriger   Temperatur getrocknet und kann dann als Farbe benützt werden. 



   Wenn es die Zusammensetzung des Erzes erlaubt, so kann der unter a.) erhaltene Rückstand nach dem Trocknen und mahlen als Engelrot, Polierpulver u. s. f. in den Handel gebracht werden.



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 Magnesium is generally only present in very small quantities in tin ores and the lime is almost entirely eliminated by the sulfuric acid under b.) A, Is calcium sulfate.
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 Acid is precipitated by the lime and lead of the ore, to which lime is added if necessary.



   The series of processes described above then begins anew.



   The sulfuric acid could be precipitated with lime between operations b.) And c.), But one would have to use very pure lime. If, after a certain number of operations, the liquid has been enriched in manganese and magnesium, a salt-free, aqueous solution of acetic acid can be regenerated by distillation after adding sulfuric acid. e. ) The water-containing zinc sulfide obtained under c.) Is dried at a relatively low temperature and can then be used as paint.



   If the composition of the ore allows, the residue obtained under a.) Can be dried and ground as angel red, polishing powder and the like. s. f. be placed on the market.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von reinem Zinksulfid durch Ausfällen aus essigsaurer Lösung mittels Schwefelwasserstoffs, dadurch gekennzeichnet, dass die, gefärbte Sulfide liefernden Metalle (Blei, Kupfer, Kadmium, Zinn, Eisen u. s. f. ) vor dem Ausfällen des Schwefelzinks dadurch zur Ausscheidung gebracht werden, dass der Bleigehalt der Lösung auf mindestens zoo des Zinkgebaltes gehalten, oder dass der weniger Blei enthaltenden Lösung zwecks stärkerer Ionisation etwas Schwefelsäure zugesetzt wird, wodurch beim anfänglichen Einleiten von Schwefelwasserstoff beim Ausfällen des Schwefelbleis sämtliche. gefärbten Sulfide mitgerissen worden. PATENT CLAIM: Process for the production of pure zinc sulphide by precipitation from acetic acid solution by means of hydrogen sulphide, characterized in that the metals (lead, copper, cadmium, tin, iron, etc.) producing colored sulphides are precipitated before the zinc sulphide is precipitated by removing the lead content kept the solution to at least zoo of the zinc content, or that the solution containing less lead is added a little sulfuric acid for the purpose of stronger ionization, whereby all of the lead sulfur is precipitated during the initial introduction of hydrogen sulfide. colored sulfides have been carried away.
AT36793D 1907-03-11 1907-03-11 Process for the production of pure zinc sulfide. AT36793B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT36793T 1907-03-11

Publications (1)

Publication Number Publication Date
AT36793B true AT36793B (en) 1909-03-26

Family

ID=3553869

Family Applications (1)

Application Number Title Priority Date Filing Date
AT36793D AT36793B (en) 1907-03-11 1907-03-11 Process for the production of pure zinc sulfide.

Country Status (1)

Country Link
AT (1) AT36793B (en)

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