程福祥;吴声;廖春生;严纯华;

• 1:五矿(北京)稀土研究院有限公司
• 2:北京大学化学与分子工程学院稀土材料化学及应用国家重点实验室北京分子科学中心

摘要(Abstract)：

稀土是对于现代工业发展至关重要的一组元素,全球对稀土产品的需求量仍在持续增长。然而,稀土的萃取分离生产过程始终伴随环境污染问题,降低酸碱消耗始终是稀土萃取分离理论与技术研究的追求目标。在串级萃取理论的指导下,稀土萃取分离工艺流程的运行经济性不断提升。尤其是2000年后联动萃取分离工艺的出现,使得稀土萃取分离流程的酸碱消耗水平显著降低。联动萃取工艺在逐步成为中国稀土分离工业基本技术的同时,也极大促进了串级萃取理论的发展。近年,以邻级杂质比概念的提出和分析为基础建立了联动萃取分离流程设计理论,其中推导得到的系列理论公式可用于设计具有理论最小萃取量和最小洗涤量的多组份联动萃取全分离流程,无需通过动态模拟和静态计算即可实现。该理论方法也可用于非联动萃取流程优化工艺参数的计算。另外,理论公式推导和运用的同时也增进了对稀土萃取分离过程物料运行规律的理解。

关键词(KeyWords)： 串级萃取理论;稀土萃取分离;联动萃取流程设计理论;最小萃取量

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2019YFC0605005)资助

作者(Authors): 程福祥;吴声;廖春生;严纯华;

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