摘要
以气态配合物LnAlnCl3n + 3(Ln =镧系元素 )为载体 ,研究了从氟碳铈矿精矿中提取分离稀土元素的分步氯化 化学气相传输反应。精矿加热至 80 0K ,然后在 80 0～ 13 0 0K氯化。生成的氯化物在 13 0 0K与配体反应生成气态配合物 ,并化学传输分离 6h ,CaCl2 和BaCl2 留在残渣中。研究结果表明 。
Vapor phase extraction and mutual separation of rare earth elements from bastnaesite concentrate were investigated using stepwise chlorination chemical vapor transport reactions mediated by vapor complexes LnAl n Cl 3 n +3 . The bastnaesite was heated to 800 K and chlorinated between 800～1300 K. At T =1300 K for 6 h, the resulting RE chlorides are chemically transported and mutual separated with the vapor complexes while CaCl 2 and BaCl 2 are remained in the residues. Significantly different chemical vapor transport characteristics are observed along gradually reduced and periodically varied temperature gradients.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2001年第3期217-220,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金资助项目 !(5 98740 0 8)
