C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 13/00 (2006.01) C01F 11/46 (2006.01) G21F 9/30 (2006.01)
Patent
CA 2443693
The invention relates to a method for enriching radium from mixtures of mineral substances containing barium sulfate, with radium which is bonded to the barium sulfate in a complex manner. According to the inventive method, the mixture of mineral substances containing barium sulfate is thermally reduced to barium sulfide by the addition of mixtures containing carbon. The obtained mixture of solid matter is mixed with water, and is stirred until the barium sulfide is dissolved, and the barium sulfate residue which is almost water- insoluble and is enriched with radium is mechanically separated from the barium sulfide dissolved in the water.
L'invention concerne un procédé d'enrichissement de radium provenant de mélanges de substances minérales contenant du sulfate de baryum, avec du radium lié de façon complexe au sulfate de baryum. Selon ledit procédé, le mélange de substances minérales contenant du sulfate de baryum est réduit thermiquement en sulfate de baryum par addition de mélanges contenant du carbone. Ledit procédé consiste à mélanger le mélange solide obtenu avec de l'eau, à remuer jusqu'à dissolution du sulfure de baryum, et à séparer mécaniquement le résidu de sulfate de baryum quasiment insoluble dans l'eau, enrichi en radium, du sulfure de baryum dissout dans l'eau.
Luther Guenter
Soeding Zita
Gkss-Forschungszentrum
Gowling Lafleur Henderson Llp
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