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


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Аннотация

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%.

Авторлар туралы

V. Maiorov

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center

Email: nikol_ai@chemy.kolasc.net.ru
Ресей, Apatity

N. Mudruk

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center

Email: nikol_ai@chemy.kolasc.net.ru
Ресей, Apatity

A. Nikolaev

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center

Хат алмасуға жауапты Автор.
Email: nikol_ai@chemy.kolasc.net.ru
Ресей, Apatity

I. Elizarova

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center

Email: nikol_ai@chemy.kolasc.net.ru
Ресей, Apatity

L. Safonova

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center

Email: nikol_ai@chemy.kolasc.net.ru
Ресей, Apatity

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