高硫高钠高放废液玻璃固化的配方验证

摘要

The verification experiment research was carried out which was aimed at the glass formulation developed for the high level liquid waste (HLLW)in Sichuan Environment and Protection Engineering Co.Ltd.,China National Nuclear Corporation (SEPEC).The main purpose is to verify the sulfur incorporation ability and the performances of the glass form. In the experiments,the waste oxide loading was changed from 1 2% to 1 6%.Two parallel glass batch samples were converted to glass.One was without any mechanical stirring and the other one was stirred by a hand tool every 20 min for about 20 s during the melting time. The results show that for the glass melted without stirring,the sulfur incorporation ability is low and the total mass loss and normalized elemental mass loss rate in 28 d MCC-1 leaching test,density,homogeneity and crystallization tendency satisfy the requirements in China industry standard.For the glass melted with stirring,the sulfur incorporation ability is much higher than the ones without stirring and other performances also satisfy the require-ments in China industry standard.%针对中核四川环保工程有限责任公司(SEPEC)的高放废液高硫高钠的特点，研制出废物包容量为16%(质量分数，下同)的玻璃固化配方。本验证实验研究重点是：验证此配方在改变废物包容量的情况下固化模拟高放废液时对硫的包容能力，以及产生的玻璃固化体的性能是否满足行业标准要求。验证实验中废物包容量分别为12%、13%、14%、15%、16%，玻璃熔制采用了搅拌和不搅拌两种方式。实验结果表明：在不搅拌条件下所熔制的玻璃对硫的包容能力较低，搅拌条件下所熔制的玻璃对硫的包容能力高，但两种条件制备的玻璃的28 d总失重、元素归一化浸出率、密度、均匀性、析晶率均达到了我国行业标准的要求。