不可燃放射性废物三元混杂玻璃固化方法初探  

Preliminary experimental research on ternary hybrid glassformulations of noncombustible radioactive wastes

作　　者：刘春雨 李丽丽 汪栋 LIU Chunyu;LI Lili;WANG Dong(China Nuclear Power Technology Research Institute Co.,Ltd.,Guangdong Shenzhen 518000)

机构地区：[1]中广核研究院有限公司,广东深圳518000

出　　处：《辐射防护》2023年第2期166-174,共9页Radiation Protection

摘　　要：通过规律性改变玻璃纤维、混凝土、土壤废物混杂比例和玻璃添加剂组分,完成固化体制备和性能测试,选出满足放射性废物玻璃固化体性能指标要求的三元混杂玻璃配方,其废物包容量、减容比均优于各单废物玻璃配方。在此基础上,实验探究了添加剂、熔制参数对混杂玻璃配方Co、Sr、Cs固化效果的影响。结果表明,熔制保温温度不高于1300℃的情况下,熔制升温过程、保温时长对混杂玻璃配方的Co、Sr固化能力基本不影响,但Cs固化能力在熔制保温温度大于1100℃的情况下会随着熔制升温温度、保温温度、保温时长增加而不断降低,建议混杂玻璃配方的熔制保温温度不高于1300℃,熔制保温时长不超过1 h。By regularly changing the mixture ratio of concrete,soil and glass fiber waste and additive composition,then completing the preparation and performance test of glass samples,the ternary hybrid glass formulations were optimized which can meet the performance requirements of radioactive waste glass.The containment capacity of the mixed waste glass formulations is much higher than that of the single waste glass formulations.The effects on the curing ability of nuclide in mixed glass formulations caused by additives,melting temperature and heat preservation temperature were investigated.The results show that both the melting temperature and heat preservation temperature have almost no effect on the curing ability of Co and Sr in the case of melting temperature not higher than 1300℃,while the curing ability of Cs decreases with the increase of melting temperature.However,the curing ability of Cs decreases with the increase of melting temperature,heat preservation temperature and holding time when the melting temperature is higher than 1100℃.It is recommended that the melting temperature of mixed glass formula should not be higher than 1300℃and the melting time should not exceed 1 hour.

关 键 词：不可燃放射性废物 玻璃固化 配方实验 三元混杂玻璃配方 

分 类 号：TL941.113[核科学技术—辐射防护及环境保护]