反应堆退役废物中影响α核素浸取率的因素

Study on the factors of influence the macerat ratio of α-radionuclides in the retirement wastes of nuclear reactor

对反应堆退役固体废物中的水池底泥和锈垢进行浸取研究,研究了α核素的浸取方法、浸取剂、浸取时间、浸取体积比等因素对浸取率的影响。实验结果表明:淋洗法以HNO3-NaNO3为淋洗剂,溶浸法以7.5mol/LHNO3为浸取剂、固液比为6∶1、浸取时间40min时,均取得97%以上的浸取率。

Through to the study of sludge and rust which produced by the retirement wastes of nuclear reactor, it was studied that the effect of macerating methods,macerating agents,maceration time,and the ratio of macerating volume on maceration ratio.The experimental results shown that mixture solution of HNO3NaNO3 is the best eluent;the solid waste was macerated with HNO3(7.5 mol/L),and the ratio of maceration extract and solid waste is 6∶1,the optimum maceration time is 40 minutes, and the recovery rate of the two methods recovery rate reached to above 97%.