作　　者： ; ; ; ; ; ; ;

机构地区： 西北师范大学化学化工学院化学系

出　　处： 《稀有金属》 1998年第4期241-245,共5页

摘　　要： 以切片石蜡为溶剂，ＴＢＰ为萃取剂，在ＮＨ４ＳＣＮＨＮＯ３介质中考察了高温下钍与稀土的萃取行为。斜率比法表明钍萃合物的组成为Ｔｈ（ＳＣＮ）４·２ＴＢＰ，测出了钍萃取反应平衡常数及热力学参数。研究了钍与稀土相互分离的条件。用于矿样中钍与稀土分离获得了满意的结果。 The extraction behavior of thorium and rare earth at higher temperature in NH 4SCN HNO 3 media was investigated using paraffin wax as a diluent and TBP as an extract. The slope analysis method shows that the species of thorium extracted is Th(SCN) 4·2TBP. Extraction equilibrium constants and thermodynamic parameters of thorium were measured. And the separation conditions of thorium and rare earth were also studied. Thorium was separated from rare earth in sample solution and the result is satisfactory.

关 键 词： 固 液萃取分离 钍 稀土 溶剂萃取

领　　域： [冶金工程]