一种高放废液固化用基础玻璃及制备方法和应用、高放废液的固化方法

By adjusting the oxide ratio of the base glass used for curing high-level radioactive waste liquid, the crystallization rate is reduced and the containment capacity is enhanced, thus solving the problem of high crystallization rate in the treatment of high-level radioactive waste liquid and achieving stability and leaching resistance of the glass-cured body.

CN117658460BActive Publication Date: 2026-07-17CHINA BUILDING MATERIALS ACADEMY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA BUILDING MATERIALS ACADEMY CO LTD
Filing Date
2023-12-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing glass-cured products exhibit high crystallization rates in the treatment of high-level radioactive waste liquids, leading to process problems such as clogging and failing to meet the requirements for anti-crystallization capabilities.

Method used

The base glass is composed of SiO2, B2O3, Na2O, Li2O, Al2O3, CaO, MgO, BaO, V2O5, and Sb2O5. By adjusting the oxide ratio, reducing the amount of alkaline earth metals introduced, and increasing the content of Na2O and Li2O, the chemical bonds of the tetrahedral structural units are broken to form cavities, thereby reducing the crystallization rate and enhancing the containment capacity.

Benefits of technology

This method achieves a low crystallization rate in high-electrochemical waste liquid glass curing, meets the requirements of the Joule furnace process, improves the tolerance to sparingly soluble elements, avoids the formation of yellow phase, and ensures the stability and leaching resistance of the glass curing.

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Abstract

本发明属于放射性废物的处理与处置技术领域，提供了一种高放废液固化用基础玻璃及制备方法、高放废液的固化方法。本发明的高放废液固化用基础玻璃，包括以下质量分数的组分：SiO228～60％，B2O312～25％，Na2O9～30％，Li2O 2.1～2.7％，Al2O34～6％，CaO 5～6.5％，MgO 0.1～0.5％，BaO1.0～1.8％，V2O51.5～2.5％，Sb2O50.1～1％。本发明通过降低碱土金属引入量，析晶率低于5vol％，具有良好的抗析晶能力，能够满足焦耳炉工艺的要求；提高基础玻璃中Na2O、Li2O含量，无Na2MoO4晶体析出，实现了对Mo的良好包容。
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