AT69879B - Process for working up mixtures containing radium or mesothorium. - Google Patents

Process for working up mixtures containing radium or mesothorium.

Info

Publication number
AT69879B
AT69879B AT69879DA AT69879B AT 69879 B AT69879 B AT 69879B AT 69879D A AT69879D A AT 69879DA AT 69879 B AT69879 B AT 69879B
Authority
AT
Austria
Prior art keywords
mesothorium
working
mixtures containing
containing radium
calcium
Prior art date
Application number
Other languages
German (de)
Inventor
Erich Dr Ebler
Original Assignee
Erich Dr Ebler
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 Erich Dr Ebler filed Critical Erich Dr Ebler
Application granted granted Critical
Publication of AT69879B publication Critical patent/AT69879B/en

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  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Mold Materials And Core Materials (AREA)

Description

  

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 24   Gewichtsteilen   feinst gepulvertem Kalziumhydrid und 91 Gewichtsteilen feinst gepulvertem Kalziumkarbid innig gemischt. In diesem Gemisch kommen 25% des zur Reduktion der Gesamtschwefelsäure notwendigen Kalziums auf das   Hydrid und 75%   auf das Karbid. Das Gemisch wird in einem Tiegel aus feuerfestem Material in der in der Aluminothermie   üblichen   Weise durch ein Entzündungsgemisch zur Entzündung gebracht, worauf die Reduktion in kurzer Zeit von selbst durch die ganze Masse verläuft.

   Es ist   zweckmässig,   den Tiegel etwas anzuwärmen und durch Einbetten in Sand oder dgl. vor Wärmeabstrahlung zu schützen, weil sich sonst leicht am Rande eine Schicht bildet, die   infolge Abkühlung   nicht durchreagiert. Nach dem Erkalten wird die Masse gepulvert, mit schwfefelsäurefreier Salzsäure erschöpfend ausgezogen und die 
 EMI3.1 
   sulfat, 23#9% Gesamtschwefelsäure und 22% Kieselsäure neben Eisen, Strontium, Kalzium.   Magnesium enthielten, werden mit 40 Teilen feinst gepulvertem   Kalziumhydrid   und 28 Teilen 
 EMI3.2 
 feuerfesten Tiegel   zur Entzündung gebracht.   Die Reduktion verlief alsdann von allein und rasch.

   Hier stammten   75% des   zur Reduktion   der Gesamtschwefelsäure notwendigen Kalziums   
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 dem Einpressen in einen Tiegel aus feuerfestem Material durch ein Zündmittel zur   Entzündung     gebracht. Die Weiterbehandlung   der reduzierten Masse   erfolgt oie   in Beispiel   2 und 3.   



    PATENT ANSPRÜCHE :   
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 24 parts by weight of finely powdered calcium hydride and 91 parts by weight of finely powdered calcium carbide are intimately mixed. In this mixture, 25% of the calcium required to reduce the total sulfuric acid comes from the hydride and 75% from the carbide. The mixture is ignited in a crucible made of refractory material in the manner customary in aluminothermics by an ignition mixture, whereupon the reduction takes place automatically through the whole mass in a short time.

   It is advisable to warm up the crucible a little and to protect it from heat radiation by embedding it in sand or the like, because otherwise a layer easily forms on the edge which does not react as a result of cooling. After cooling, the mass is powdered, exhaustively extracted with sulfuric acid-free hydrochloric acid and the
 EMI3.1
   sulfate, 23 # 9% total sulfuric acid and 22% silica in addition to iron, strontium, calcium. Magnesium contained 40 parts of finely powdered calcium hydride and 28 parts
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 refractory crucible ignited. The reduction then proceeded quickly and by itself.

   Here 75% of the calcium required to reduce the total sulfuric acid came from
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 After being pressed into a crucible made of refractory material, it is ignited by an ignition means. The further treatment of the reduced mass takes place as in Examples 2 and 3.



    PATENT CLAIMS:
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AT69879D 1913-09-17 1914-01-15 Process for working up mixtures containing radium or mesothorium. AT69879B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE69879X 1913-09-17

Publications (1)

Publication Number Publication Date
AT69879B true AT69879B (en) 1915-09-10

Family

ID=5635208

Family Applications (1)

Application Number Title Priority Date Filing Date
AT69879D AT69879B (en) 1913-09-17 1914-01-15 Process for working up mixtures containing radium or mesothorium.

Country Status (1)

Country Link
AT (1) AT69879B (en)

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