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

V. G. Maiorov; N. V. Mudruk; A. I. Nikolaev; I. R. Elizarova; L. A. Safonova

doi:10.1134/S0040579516050158

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

作者: Maiorov V.G.¹, Mudruk N.V.¹, Nikolaev A.I.¹, Elizarova I.R.¹, Safonova L.A.¹
隶属关系:
1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center
期: 卷 50, 编号 5 (2016)
页面: 781-784
栏目: Technology of Inorganic Substances and Materials
URL: https://bakhtiniada.ru/0040-5795/article/view/171089
DOI: https://doi.org/10.1134/S0040579516050158
ID: 171089

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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%.