AT36813B - Process for the preparation of barium cyanide from barium cyanamide. - Google Patents

Process for the preparation of barium cyanide from barium cyanamide.

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Publication number
AT36813B
AT36813B AT36813DA AT36813B AT 36813 B AT36813 B AT 36813B AT 36813D A AT36813D A AT 36813DA AT 36813 B AT36813 B AT 36813B
Authority
AT
Austria
Prior art keywords
barium
cyanide
cyanamide
preparation
nitrogen
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf Ag
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
Priority claimed from DE1906197394D external-priority patent/DE197394C/de
Application filed by Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT36813B publication Critical patent/AT36813B/en

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Description

  

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 sehr geringer Menge mit dem seiner Aktivität beraubten Kohlenstoff zu Cyanid vereinigen. 



   Das vorliegende Verfahren lässt sich mit besonderem Vorteil auch   auf Baryamcyan-   amid enthaltende Gemische anwenden, wie sie z. B. nach dem oben erwähnten Verfahren von Marguerite und Sourdeval gewonnen werden. Man arbeitet in diesem Falle zweckmässig so, dass man das Gemenge von Baryumoxyd bezw. Baryumcarbonat und Kohle zunächst zur Bildung eines Produktes mit höchstem Stickstoffgehalt bei möglichst hoher Temperatur mit Stickstoff oder einem Stickstoff enthaltenden Gase behandelt und sodann zum Zwecke der Umwandlung des Cyanamids in Cyanid dem Brenngut bei der Abkühlung aktiven Kohlenstoff in Form von kohlenstoffhAltigen Gasen zuführt. 



   Beispiel 1. 



   Rohes   Baryumcyanid,   dessen Stickstoff zu ca.   600/0 als Cyanid   und zu   4 (JO/o als   Cyanamid gebunden ist, wird in einem eisernen Gefäss unter   Durchleiten   von Acetylen auf 600- 800  C erhitzt. Die Umwandlung in das Cyanid ist innerhalb weniger Stunden beendet. 



   Beispiel Il. 



   Ein Gemisch   von S   Teilen   Bariumcarbonat   und   l Teil Holzkohlenputver wird   hrikettiert und in einem   Chamottegefäss unter Durch ! eiten   von Stickstoff auf zirka   15000 C   
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 peraturen auf 1100  heruntergehen und leitet sodann in bekannter Weise von   Kohlensäure   befreites Generatorgas ein, bis die Umwandlung in Cyanid vollendet ist. PATENT-ANSPRÜCHE : 
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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 combine a very small amount with the carbon deprived of its activity to form cyanide.



   The present method can also be used with particular advantage on mixtures containing baryamcyanamide, as they are, for. B. obtained by the above-mentioned method of Marguerite and Sourdeval. In this case, it is practical to work in such a way that the mixture of barium oxide is used. Barium carbonate and coal are first treated with nitrogen or a nitrogen-containing gas to form a product with the highest nitrogen content at the highest possible temperature and then, for the purpose of converting the cyanamide into cyanide, active carbon in the form of carbon-containing gases is added to the kiln during cooling.



   Example 1.



   Raw barium cyanide, about 600/0 of which is bound as cyanide and 4 (JO / o as cyanamide), is heated to 600-800 ° C. in an iron vessel while passing acetylene through it. The conversion into cyanide takes a few hours completed.



   Example Il.



   A mixture of 5 parts of barium carbonate and 1 part of charcoal putty is hriketted and poured into a chamotte vessel under through! heating nitrogen to around 15000 C
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 Temperatures go down to 1100 and then pass in a generator gas freed of carbon dioxide in a known manner until the conversion to cyanide is complete. PATENT CLAIMS:
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** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT36813D 1906-04-28 1908-04-23 Process for the preparation of barium cyanide from barium cyanamide. AT36813B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1906197394D DE197394C (en) 1906-04-28

Publications (1)

Publication Number Publication Date
AT36813B true AT36813B (en) 1909-04-10

Family

ID=5756342

Family Applications (1)

Application Number Title Priority Date Filing Date
AT36813D AT36813B (en) 1906-04-28 1908-04-23 Process for the preparation of barium cyanide from barium cyanamide.

Country Status (1)

Country Link
AT (1) AT36813B (en)

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