A method for preparing a crystallized material using a liquid slag powder of a thermal power plant

By using the liquid slag powder method from thermal power plants, components such as TiO2 and ZrO2 in the liquid slag are used as nucleating agents to directly prepare crystallized materials. This solves the problems of complex and costly resource utilization of liquid slag in existing technologies and realizes efficient and low-cost preparation of crystallized materials.

CN122403779APending Publication Date: 2026-07-17XIAN THERMAL POWER RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN THERMAL POWER RES INST CO LTD
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The current technology for the resource utilization of liquid slag from thermal power plants has problems such as complex processes and high costs. In particular, it requires modification of the slag composition and the addition of exogenous nucleating agents, which leads to complex process flow, increased equipment investment and energy consumption, and poor adaptability to raw materials.

Method used

By using the liquid slag powder method from thermal power plants, crystallized materials can be directly prepared by limiting the chemical composition and glass phase content of the raw materials. Components such as TiO2 and ZrO2 in the liquid slag are used as nucleating agents, eliminating the need for additional additions and secondary melting, thus simplifying the process and reducing costs.

Benefits of technology

It has enabled the transformation of liquid slag into high-value crystallization materials, simplified the process, reduced equipment investment and energy consumption, improved the adaptability of raw materials, and realized the resource utilization of solid waste without pickiness or inspection.

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Abstract

本发明涉及火电厂资源利用领域,具体涉及一种利用火电厂液态渣粉末法制备晶化材料的方法;选取火电厂干基原始液态渣作为原料,所述原始液态渣的化学组成按质量百分比计为:SiO2:40~45%,Al2O3:10~15%,RO:11~20%,R2O:1~3%,Fe2O3:3.5~8%,其他:0.5~1.5%;且所述原始液态渣的物相成为玻璃相含量不低于85%;对原始液态渣依次经过干燥、制粉、压制、晶化和退火处理,得到晶化材料;本发明从源头上简化了工艺流程,通过利用液态渣中固有的TiO2、Fe2O3等杂质组分作为晶核剂,无需额外添加和外源引入,既降低了原料成本,又省去了二次熔融环节。
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