Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
J Hazard Mater. 2012 Oct 15;235-236:17-28. doi: 10.1016/j.jhazmat.2012.07.039. Epub 2012 Jul 27.
Immobilization of phosphate containing high level nuclear wastes within commonly used silicate glasses is difficult due to restricted solubility of P(2)O(5) within such melts and its tendency to promote crystallization. The situation becomes more adverse when sulfate, chromate, etc. are also present within the waste. To solve this problem waste developers have carried out significant laboratory scale research works in various phosphate based glass systems and successfully identified few formulations which apparently look very promising as they are chemically durable, thermally stable and can be processed at moderate temperatures. However, in the absence of required plant scale manufacturing experiences it is not possible to replace existing silicate based vitrification processes by the phosphate based ones. A review on phosphate glass based wasteforms is presented here.
由于 P(2)O(5)在这种熔体中的溶解度有限，且其易促进结晶，因此将含磷酸盐的高水平核废料固定在常用的硅酸盐玻璃中是困难的。当废物中还存在硫酸盐、铬酸盐等时，情况会变得更加不利。为了解决这个问题，废物开发者在各种磷酸盐基玻璃系统中进行了大量的实验室规模研究工作，并成功地确定了一些配方，这些配方显然很有前途，因为它们具有化学耐久性、热稳定性，并且可以在中等温度下进行处理。然而，由于缺乏所需的工厂规模制造经验，无法用磷酸盐基玻璃代替现有的基于硅酸盐的玻璃固化工艺。本文对基于磷酸盐的玻璃废料进行了综述。
