Extraction of antimony and niobium with tributyl phosphate from fluoride-ammonium solutions

被引：0
作者：
V. G. Maiorov
N. V. Mudruk
A. I. Nikolaev
I. R. Elizarova
L. A. Safonova
机构：
[1] Russian Academy of Sciences,Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
来源：
Theoretical Foundations of Chemical Engineering | 2016年 / 50卷
关键词：
niobium; antimony; extraction; tributyl phosphate; fluoride-ammonium solutions;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The purification of niobium from antimony impurity via extraction with tributyl phosphate from solutions of the HF + NH4F mixture has been studied. It has been established that at an HF + NH4F content equal to 7–16 mol/L and an NH4F concentration of 30% in the mixture, Sb extraction hardly changes (70–80% for one stage), and Nb coextraction abruptly decreases to values of less than 0.5%.
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页码：781 / 784
页数：3
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[1]  
Il’in E.G.(2011)Extraction of Sb(V) from fluoride solutions with n-octanol: New aquafluorohydroxoantimonates Dokl. Phys. Chem. 439 145-149
[2]  
Tyuremnov A.V.(2013)Extraction of antimony and tantalum from aqueous fluoride solutions by noctanol and tributhyl phosphate Russ. J. Inorg. Chem. 58 474-480
[3]  
Kirichenko N.V.(2013)Extraction of tantalum niobium and antimony fluorides, Theor. Found. Chem. Eng. 47 480-483
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Maiorov V.G.(2014)Purification of niobium from antimony by extraction with tributhyl phosphate Khim. Tekhnol. 15 300-304
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