Process for the treatment of natural apatites with a view to...

Details Process for the treatment of natural apatites with a view to... Process for the treatment of natural apatites with a view to...

C - Chemistry, Metallurgy

01

B

C01B 25/32 (2006.01) C01B 25/01 (2006.01) G21F 1/02 (2006.01) G21F 9/34 (2006.01)

Patent

CA 2125826

The invention relates to a process for the treatment of natural apatites with a view to the use thereof for storing irradiated fuel elements. This process consists of contacting a natural apatite powder with an acid aqueous solution, e.g. dilute HN0 3 or HC1 for between a few seconds and 10 minutes. In this way, the physicochemical properties of the natural apatite are improved by modifying its surface composition in order to make it close to that of hydroxyapatite. This modified apatite can be used as a filling material in irradiated fuel element storage containers.

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