环烷酸萃取法从氯化矿泥水浸液中分离稀土元素 2.萃取工艺研究  

To Separate Rare Earth Elements from the AqueousChlorinate of Mine Mud by Naphthenic Acid Extraction2.Study of the Extractive Technique

作　　者：张萍[1] 蒋馥华[2] 卢寿慈 

机构地区：[1]中国地质大学材料与化学工程学院 [2]武汉冶金科技大学化工系 [3]北京科技大学资源工程学院

出　　处：《化学世界》1999年第6期326-330,共5页Chemical World

摘　　要：川西稀土矿泥氯化物水浸液经除杂处理后，用环烷酸萃取。研究了皂化度、平衡水相ｐＨ值、萃取剂浓度等影响因素。用４级逆流串级萃取、２级反萃，可得到纯度９９．８％、含量约５６ｇ·ｄｍ－３的氯化稀土溶液，稀土收率达９６％。整个萃取工艺闭路循环，无废液污染产生。The aqueous leaching liquor of chlorinate of mine mud from west Sichuan Province in which the impurities was preremoved was extracted by naphthenic acid. The influential factors such as the saponification value, pH value of balanced aqueous phase and the concentrations of extracting agent were studied. The rare earth chloride solutions in which the content of rare earth chloride reaches 56 kgm-1were obtained by 4 stages of countercurrent and 2 stages of stripping, the recovered rare earth can reach 96% and the purity of rare earth in product solution is 99.2%. The whole extractive technique was carried out in closed cycle, no soiling solution was produced.

关 键 词：稀土元素 环烷酸 逆流串级萃取 稀土矿 萃取剂 

分 类 号：TF845.032[冶金工程—有色金属冶金] O614.33[理学—无机化学]