放射性岩棉玻璃固化过程中的关键工艺参数

Key Vitrification Process Parameters of Radioactive Rock Wool

针对放射性岩棉的玻璃固化配方,分别进行了高温粘度及低温粘度研究,对按照优化工艺参数制得的放射性岩棉玻璃固化体进行性能验证与评价。结果表明:优化配方玻璃熔融体高温粘度曲线方程为η=1.27×10-8×e29 794.11/T,相关系数达到0.999 1,预测优选熔化温度为1 181℃、成型操作前期温度范围为1 034~914℃、成型操作后期温度范围为914~619℃;优选退火温度范围为544~574℃;按照优化工艺参数制得的玻璃体均匀性好,密度满足玻璃固化体要求,玻璃化程度高,机械强度较高,表明研究所得的工艺参数为适用于放射性岩棉配方的优化结果,为等离子体高温焚烧装置的优化设计及放射性岩棉玻璃固化配方的工程应用提供了参考依据。

Based on the vitrification formula of radioactive rock wool and the high-temperature and low-temperature viscosity experiments,this study was verified and evaluated the performance of radioactive rock wool vitrification produced by the optimized process parameters.The results indicate that high-temperature viscosity equation of melting glass produced by the optimized formula is η=1.27×10^(-8)×e^(29794.11/T).The coefficient of association is 0.999 1,and predict optimized melting temperature is 1181 ℃.The temperature range of earlier and later forming stage are 1034-914 ℃ and 914-619 ℃ respectively.The optimized annealing temperature range is 544-574 ℃.The radioactive rock wool vitrification produced by the optimized process parameters has well uniformity,high vitrification degree and mechanical strength,the density of which meet the requirements of vitrification.The processparameters obtained by this study are suitable for optimization formula of radioactive rock wool vitrification,and that provid reference for optimized design of the plasma high temperature incineration platform and engineering applications of radioactive rock wool vitrification formula.