Separation of zirconium from hafnium in sulfate medium using solvent extraction with a new reagent BEAP

被引：26

作者：

Chen, She ^{[1
,2
]}

Zhang, Zhifeng ^{[2
]}

Kuang, Shengting ^{[2
]}

Li, Yanling ^{[2
]}

Huang, Xiaowen ^{[1
]}

Liao, Wuping ^{[2
]}

机构：

[1] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, ERC Separat & Purificat REs & Thorium, Changchun 130022, Peoples R China

来源：

HYDROMETALLURGY | 2017年 / 169卷

基金：

中国国家自然科学基金;

关键词：

Zirconium; Hafnium; Solvent extraction; BEAP; Sulfate medium; SELECTIVE EXTRACTION; ACID-SOLUTIONS; RECOVERY;

D O I：

10.1016/j.hydromet.2017.04.001

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A new extractant, bis(2-ethylhexyl)-1-(2-ethylhexylamino)propylphosphonate (BEAP or B) was synthesized to extract and separate zirconium and hafnium from sulfate medium. Under optimum conditions, the separation factor of Zr over Hf was found to be 6.8. The extracted complexes were determined to be ZrO(HSO4)(2)center dot 3B and HfO (HSO4)(2)center dot 2B. The extractions of zirconium and hafnium are both exothermic. A counter-current operation was conducted, in which the content of HfO2 was decreased from 3% to 0.6% in the ZrO2 product. It is suggested that much more extraction and scrubbing stages are needed to reach the goal of 0.01% HfO2 in ZrO2 product.

引用

页码：607 / 611

页数：5

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