摘要
采用１．５ＭＰ（２０４）为萃取剂，在盐酸体系中，以中稀土为原料．采用“一分三”技术，直接制备出纯氧化钐、氧化钆和氧化铕富集物。在工业规模生产中。系统研究了在洗涤段采用部分外回流技术，在其它参数不变的条件下，使氢化钆纯度由＞９９％提高到＞９９．９％，使中间产品氧化铕品位由６５％提高到＞７５％。
In 1.5M HDEHP-kerosene HCl system, middle rare earths as raw feed,the ″oneproducing three″technique was used for producing pure Sm_2O_3,Gd_2O_3 and Eu-riched oxide. Inwashing section of mass production the partial external reflux technique has been studied system-atically.As keeping the other factors unchanged,the purities of Gd_2O_3 and Eu-riched productswere increased from 99%to 99.9%and from 65%to 75%, respectively.
出处
《稀土》
EI
CAS
CSCD
1995年第1期11-16,共6页
Chinese Rare Earths
