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    • 74. 发明公开
    • VERFAHREN ZUR DEKONTAMINATION VON KONTAMINIERTEM GRAPHIT
    • EP3170187A1
    • 2017-05-24
    • EP15732683.6
    • 2015-06-29
    • Ald Vacuum Technologies GmbH
    • FACHINGER, JohannesGROSSE, Karl-Heinz
    • G21F9/00G21F9/30
    • The present invention relates to the decontamination of contaminated graphite, in particular of irradiated graphite. According to the invention, this is understood as meaning a method for separating volatile radionuclides from contaminated graphite and transforming the graphite together with non-volatile radionuclides into a form appropriate for ultimate storage. The method according to the invention comprises heating up the contaminated graphite to obtain treated graphite, compacting the treated graphite to obtain a formed piece and optionally embedding the treated graphite in a matrix material to obtain an encapsulated formed piece. Depending on the requirements specific to the country concerned, disposal and storage of the formed piece comprising the treated graphite is possible with less demanding safety requirements. As a result, the volume of such material that requires particularly sophisticated and consequently particularly cost-intensive disposal and storage, particularly storage deep underground, can be reduced significantly. This also leads to significantly reduced costs for the disposal of contaminated graphite, large quantities of which occur on an annual basis.
    • 本发明涉及污染石墨的净化,特别是辐照石墨的净化。 根据本发明,这被理解为是指从被污染的石墨中分离挥发性放射性核素并将石墨与非挥发性放射性核素一起转化成适于最终储存的形式的方法。 根据本发明的方法包括加热污染的石墨以获得经处理的石墨,压实经处理的石墨以获得成形件并且任选地将经处理的石墨嵌入基质材料中以获得包封的成形件。 根据相关国家的具体要求,包含处理过的石墨的成型件的处理和存储可能对安全性要求较低。 因此,需要特别成熟且因此特别昂贵的处置和储存,尤其是储存在地下深处的这种材料的体积可以显着减少。 这也导致处理污染石墨的成本大大降低,大量石油每年都会发生。