化学学报 ›› 2000, Vol. 58 ›› Issue (12): 1608-1614. 上一篇    下一篇

研究论文

人造岩石固wx 包容锕系核素废物

罗上庚;杨建文;朱鑫璋   

  1. 中国原子能科学研究院.北京(102413)
  • 发布日期:2000-12-15

Synroc solidification of actinide wastes

Luo Shanggeng;Yang Jianwen;Zhu Xinzhang   

  1. China Inst Atom Energy.Beijing(102413)
  • Published:2000-12-15

研究了富钙钛锆石型和富烧绿石型两种人造岩石固化体包容锕系核素的配方设计和固化产品的鉴定评价,包括物理性能、抗浸出性能和耐辐照性能。采用了X射线衍射(XRD)、扫描电镜/能谱分析(SEM/EDS)和透射电镜/能谱分析(TEM/EDS)研究了矿相组合、元素分布和矿相化学组成等。研究表明,富钙钛锆石和富烧绿石型人造岩石都能很好地固化包容锕系核素废物。

关键词: 人造岩石, 锕系核素, 钙钛锆石, 烧绿石, X射线衍射分析, 扫描电子显微镜, 放射性废物

Zirconolite-rich and pyrochlore-rich synrocs were fabricated and studied. The designed formulae for solidification of actinides were given, and the properties of the waste form, like physical properties, durability properties and irradiation properties, were evaluated. The phase assemblages, elemental distribution and phase chemical composition were analyzed by using X-ray diffractometer (XRD), scanning electron microscopy with energy dispersive spectrometer (SEM/EDS) and transmission electron microscopy with energy dispersive spectrometer (TEM/EDS). The results showed that zirconolite-rich and pyrochlore-rich synrocs were suitable waste form for solidification of actinide wastes.

Key words: PYROCHLORE, X-RAY DIFFRACTION ANALYSIS, SCANNING ELECTRON MICROSCOPES, RADIOACTIVE WASTE

中图分类号: