铪
化学
锆
数据清理
萃取(化学)
试剂
硫酸盐
放热反应
溶剂萃取
无机化学
溶剂
核化学
色谱法
有机化学
数学
统计
作者
She Chen,Zhifeng Zhang,Shengting Kuang,Yanling Li,Xiaowen Huang,Wuping Liao
标识
DOI:10.1016/j.hydromet.2017.04.001
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)2·3B and HfO(HSO4)2·2B. 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.
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