稀土分离萃取设备的选择和应用  

Selection and Application of Extractors in Separating Rare Earth Elements

作　　者：公锡泰[1] 鲍卫民[1] 何培炯[1] 

机构地区：[1]清华大学核能技术设计研究院

出　　处：《稀土》1995年第2期65-69,共5页Chinese Rare Earths

摘　　要：本文介绍了各类萃取设备的特性及其适用条件。讨论了不同萃取设备用于稀土分离的可行性及其对技术、经济指标带来的影响。选用振动柱作为还原萃取设备，产出了纯度＞９９．９９％的Ｅｕ２Ｏ３。选用离心萃取器，克服了环烷酸萃取体系粘度大不好分相，操作不稳定的缺点。由于离心萃取器中物料占有量比混合澄清槽小得多，大大降低了Ｐ（５０７）体系中萃取剂的用量，使稀土分离厂的投资大幅度降低。The general features of all kinds of extractors were compared in this paper.The applicability of all kinds of extraction devices and the influence on technological and economic tar- get were studied and the characteristics of separating rare earth elements by solvent extraction were discussed. The super purity Eu203(>99. 99%)was obtained in the process with reciprocating plate col- umn as the main equipment of reducing extraction. The difficulty caused by high viscosity in oper- ating in naphthenic acid(HA)system was overcome,and amount of EHEHPA(P(507))in the equip- ment was greatly reduced by using centrifugal extractor in industrial test facility,All the experi- ments have proved that it is feasible using the centrifugal extractor in the separate extraction of rare earth elements.

关 键 词：萃取 分离 稀土 萃取设备 P507 离心萃取器 

分 类 号：O614.33[理学—无机化学] O652.62[理学—化学]