Purification of niobium from antimony by the extraction with tributylphosphate

Autor:	I. R. Elizarova, N. V. Kirichenko, V. G. Maiorov, L. A. Safonova, A. I. Nikolaev
Rok vydání:	2015
Předmět:	chemistry.chemical_compound Antimony Chemistry General Chemical Engineering Phase ratio Extraction (chemistry) Niobium Tantalum chemistry.chemical_element One-Step Tributyl phosphate General Chemistry Nuclear chemistry
Zdroj:	Theoretical Foundations of Chemical Engineering. 49:536-539
ISSN:	1608-3431 0040-5795
DOI:	10.1134/s0040579515040156
Popis:	The effect of the concentrations of HF and H2SO4 and organic-to-aqueous phase ratio Vo : Vaq on the distribution of Sb and Nb in their extraction with tributyl phosphate has been studied. It has been determined that, under the best conditions (HFfree 150 g/L, H2SO4 100 g/L, and Vo : Vaq = 0.3 : 1), and the extraction of Sb within one step is 72%, which is followed by the coextraction of Nb at 25%. The flow diagram of extraction and separation of Ta, Sb, and Nb from model solutions, which are close in composition to the reprocessed tantalite-columbites, has been suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6386124d8e23f13b5e8d80bfef199f16 https://doi.org/10.1134/s0040579515040156 Zobrazit plný text záznamu Plný text ve formátu PDF