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电子级磷酸是半导体、光伏及液晶显示等高端制造的关键材料，需满足99.999 9%以上的超高纯度要求，对金属离子和非金属杂质控制严苛。相较于传统离子交换、吸附及膜分离技术，熔融结晶技术通过熔融态磷酸的相变结晶实现杂质高效分离，兼具低能耗、无溶剂污染的环保特性，在湿法磷酸制备电子级磷酸领域展现出显著优势。综述熔融结晶技术在湿法磷酸制备电子级磷酸中的研究进展，总结熔融结晶参数对电子级磷酸制备过程中晶体内部杂质去除的影响。提出未来需通过优化结晶器、多技术耦合、智能调控，进一步提高产品的纯度以及生产效率。熔融结晶技术为湿法磷酸高值化提供了绿色路径，契合电子化学品战略需求，具有显著经济与环境效益。
Abstract：Electronic-grade phosphoric acid is a key material for high-end manufacturing such as semiconductors,photovoltaics, and liquid crystal displays. It needs to meet ultra-high purity requirements of over 99.999 9% and strictly control metal ions and non-metallic impurities. Compared with traditional ion exchange, adsorption, and membrane separation technologies, melt crystallization technology achieves efficient impurity separation through phase change crystallization of molten phosphoric acid, and has the environmental characteristics of low energy consumption and no solvent pollution. It has shown significant advantages in the field of preparation of electronic grade phosphoric acid from wet-process phosphoric acid. The research progress of melt crystallization technology in the preparation of electronic grade phosphoric acid from wet-process phosphoric acid is reviewed, and the influence of melt crystallization parameters on the removal of impurities inside the crystal during the preparation of electronic grade phosphoric acid is summarized. It is proposed that in the future, it is necessary to further improve the purity and production efficiency of products by optimizing crystallizers, coupling multiple technologies, and intelligent regulation. Melt crystallization technology provides a green path for high-value wet-process phosphoric acid, which meets the strategic needs of electronic chemicals and has significant economic and environmental benefits.
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基本信息:
DOI：
中图分类号:TQ126.35
引用信息:
[1]高瑞,黄欣,王霆等.熔融结晶技术在湿法磷酸制电子级磷酸中的应用研究进展[J].生态产业科学与磷氟工程,2025,40(06):35-44.
基金信息: