Recovery of thorium (IV) from leached monazite solutions using counter-current extraction

被引：29

作者：

Ali, A. M. I. ^{[1
]}

El-Nadi, Y. A. ^{[1
]}

Daoud, J. A. ^{[1
]}

Aly, H. F. ^{[1
]}

机构：

[1] Atom Energy Author, Hot Labs Ctr, Cairo, Egypt

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 2007年 / 81卷 / 04期

关键词：

monazite; alkaline leaching; thorium; Aliquat-336; mixer-settler;

D O I：

10.1016/j.minpro.2006.06.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A flow sheet was developed to recover thorium from Egyptian monazite sands. The results of a detailed investigation on the extraction and stripping of thorium in the hydrous oxide are obtained after alkaline dissolution followed by leaching with alkaline carbonate solutions. This cake was dissolved in 4 M HNO3 and thorium was extracted selectively by a counter-current extraction system using a mixer-settler contactor and Aliquat-336 in kerosene as extractant. The results show that 2 h of continuous operation are necessary to reach the steady state condition for the process. The extraction efficiency is found to be 80% and the stripping efficiency is 82%. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：217 / 223

页数：7

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