中南大学学报（自然科学版）2025，Vol.56Issue(4)：1303-1310,8.DOI:10.11817/j.issn.1672-7207.2025.04.004
HF-BeF2体系中FeF3的溶解行为
Dissolution behavior of FeF3 in HF-BeF2 system
摘要
Abstract
A new beryllium metallurgy method of low-temperature dissociation of beryllium ore plus physical purification based on HF system was proposed.For the removal and purification process of iron impurities in this method,the purification law and dissolution mechanism of FeF3 were investigated.The results show that in FeF3-H2O environment,FeF3 solubility is very small,while in HF environment,due to the formation of the ligand ions of F,H3FeF6 will be produced,which enhances the FeF3 solubility.When only BeF2 is added to the system,the presence of BeF2 in the solution will reduce the solubility of FeF3 to a certain extent.When the system contains BeF2 and additional HF,the formation of BeF42-ligand ions from BeF2 is promoted.When there is residual after HF and BeF2 form complexes,the remaining F-will contribute to the occurrence of the common ion effect,which will reduce the FeF3 solubility.BeF42-is preferentially generated when both Fe3+and Be2+are present in the solution,while the formation of H3FeF6 requires a higher concentration of HF.关键词
氢氟酸/铍冶金/绿柱石/FeF3溶解度Key words
hydrofluoric acid/beryllium metallurgy/beryl/FeF3 solubility分类
冶金工业引用本文复制引用
申耀宗,郭培民,王磊,孔令兵,郭庆,曾志彦,谢奕斌..HF-BeF2体系中FeF3的溶解行为[J].中南大学学报（自然科学版）,2025,56(4):1303-1310,8.基金项目
国家重点研发计划项目(2021YFC2902302,2021YFC2902301)(Projects(2021YFC2902302,2021YFC2902301)supported by the National Key R&D Program of China) （2021YFC2902302,2021YFC2902301）
