气化熔融将化学转化和矿物质熔融相结合，有机质被完全分解的同时，有害元素则被熔渣彻底吸收，并经熔融-固化-玻璃化转变而稳定无害化，是处置煤源危废的有效手段。以往基于硅-铝等宏量组分建立的熔渣玻璃化指标具有局限性，不能完全适用于有害元素参与的玻璃化过程评价，造成对有害元素的玻璃化稳定机理认识不清。因此，本项目提出构筑多元有害元素主导的熔渣玻璃化行为理论，探索介稳相调控玻璃体稳定性的方法。.研究聚焦熔渣玻璃化关键问题，首先对典型有害元素熔渣体系进行分类，建立不同体系热力学模型；考察气化熔融过程中熔渣和有害元素的非均相熔融团聚特性，明确非均相团聚对玻璃化过程的影响；解析有害元素熔渣介稳相转变规律及关联因素，探索熔融调质及相变调控措施；建立有效的玻璃体聚合结构解析方法，阐明有害元素在聚合结构中的稳定化机制；以此为基础，完善熔渣玻璃体形成机理和有害元素固化理论，并为气化熔融相关研究提供新思路。

Molten gasification combining chemical conversion and fusion of inorganic species is considered as an appropriate technology for processing coal-derived hazardous wastes. During this process, hazardous materials could be absorbed by the molten slag and converted into nonhazardous vitrification species via fusion-solidification reactions. However, the evaluation on the solidification mechanism and its efficiency is lack of systematical knowledge. Therefore, an improved theory regarding harmful elements-dominated slag, which principally relies on the vitrification process, is proposed in this project; and moreover, some feasible approaches based on the metastable mesophase regulation to optimize the transformation of slag are investigated accordingly. . Primarily, harmful elements and slag will be classified into different types according to the components, and their respective thermodynamic model would be established. Further, the inhomogeneous melting behavior and its impact on the vitrification process of harmful elements would be investigated. The transition process and related factors of the mesomorphic phase of slag will be analyzed. Sequentially, the feasible approaches for regulating the phase transition of slag will be developed. The effective methods for evaluating the polymer microstructure of molten slag will be presented. The stability of harmful elements in the microstructure of slag would be verified. Based on those fundamental investigations, the mechanism on vitrification and stabilization of harmful elements would be further proposed, which would shed light upon the development of such technology.