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Use of sintered mixed carbonated for the confinement of radioactive carbon 发明申请

2023-08-02 3020 531K 0

专利信息

申请日期 2025-07-08 申请号 US10543448
公开(公告)号 US20060195002A1 公开(公告)日 2006-08-31
公开国别 US 申请人省市代码 全国
申请人 Agnes Grandjean; Gilles Leturcq; Christophe Baron
简介 The present invention relates to the use of a mixed carbonate of formula AB(CO3)2, in which A and B are different and chosen from alkali metals, alkaline-earth metals and rare earths, for the containment of radioactive carbon. This use may for example involve a process comprising : mixing C02 having a radioactive carbon to be contained, or a simple carbonate of an alkali, alkaline-earth or rare-earth metal having a radioactive carbon to be contained, with an aqueous solution of a mixture of ACln and BClm or with an aqueous solution of a mixture of A(OH)n and B(OH)m in order to obtain a precipitate of AB(CO3)2, where n and m are integers sufficient to compensate for the charge of A and B respectively; recovery of the AB(CO3)2 precipitate in powder form; and then pressing and sintering of the powder at a temperature below the decarbonation temperature of the mixed carbonate manufactured in order to obtain sintered pellets of mixed carbonates for the containment of the radioactive carbon.


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