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氟碳铈矿属氟碳酸盐类型稀土矿，常伴生有钡、锶、钙、铁、钍等元素，作为世界上工业应用最主要的稀土矿产资源之一，其冶炼分离技术的发展对稀土工业化进程具有重要影响。首先介绍了氟碳铈矿冶炼分离产业的发展现状，重点分析工业上冶炼氟碳铈稀土精矿普遍采用的氧化焙烧—盐酸浸出—碱转优溶主流工艺特点和存在的问题，进一步介绍了低温氧化焙烧—盐酸配位浸出、盐酸—硫酸联合法等氟碳铈矿冶炼分离新工艺研究进展及技术特点。最后，针对现阶段氟碳铈矿冶炼分离工艺的发展现状，从技术绿色化提升、生产数智化转型等方面提出了发展建议。
Abstract：Bastnaesite belongs to the fluoro carbonate-type rare earth ore, often associated with barium, strontium, calcium, iron, thorium, and other elements.As one of the most important rare earth resources with the most industrial applications in the world, the technological development in extraction and separation technology of bastnaesite is of great importance for industrialization of rare earth.The current status of extraction and separation industry of bastnaesite was introduced firstly.The characteristics and problems of the current mainstream techniques of oxidation roasting, hydrochloric acid leaching and alkali conversion, which is widely used in the industrial smelting of bastnaesite rare earth concentrate, were analyzed and reviewed.Then the new extraction and separation processes of bastnaesite, which contain low-temperature oxidation roasting and hydrochloric acid leaching method, and hydrochloric acid-sulfuric acid combination method, and other method as well as their characteristics, were reviewed.Finally, according to the current development status and problems of the bastnaesite extraction and separation process, the suggestions were put forward in terms of green upgrading and intelligent transformation of the technology.
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基本信息:
DOI：10.3969/j.issn.1007-7545.2024.11.005
中图分类号:TF845
引用信息:
[1]王猛,李博,郝海青,等.氟碳铈矿冶炼分离技术现状及发展趋势[J].有色金属(冶炼部分),2024(11):41-50.DOI:10.3969/j.issn.1007-7545.2024.11.005.
基金信息:
国家自然科学基金资助项目(52274355); 国家重点研发计划项目(2022YFC2905305)
2024-08-31
2024
2024
2024-09-03
2024-09-03
1
2024-10-31
2024-10-31