Extraction of Ta and Nb from a Coltan Bearing Ore by Means of Ammonium Bifluoride Fluorination and Sulfuric Acid Leaching

Extraction of Ta and Nb from a Coltan Bearing Ore by Means of Ammonium Bifluoride Fluorination and Sulfuric Acid Leaching

A novel approach for Ta and Nb extraction consisting of the pre-treatment of a coltan-bearing ore with an ammonium bifluoride sub-molten salt and subsequent acid leaching has been studied. The effects from ore granulometry, ammonium bifluoride (ABF) to ore mass ratio, temperature and duration of flu...

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Bibliographic Details
Main Authors: Alidor Shikika, Francois Zabene, Fabrice Muvundja, Mac C. Mugumaoderha, Julien L. Colaux, Mohamed Aatach, Stoyan Gaydardzhiev
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Minerals
Subjects:
ammonium bifluoride (ABF)
fluorination
tantalum
niobium
coltan ore
sub-molten salt-assisted leaching
Online Access:https://www.mdpi.com/2075-163X/11/12/1392

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