Niobium and tantalum separation by gas-phase fluorination
| dc.contributor.author | Pienaar, A.D. | |
| dc.contributor.author | Wagener, J.B. | |
| dc.contributor.author | Crouse, Philippus L. | |
| dc.date.accessioned | 2013-07-02T13:42:57Z | |
| dc.date.available | 2013-07-02T13:42:57Z | |
| dc.date.issued | 2012-11 | |
| dc.description.abstract | The separation of tantalum and niobium compounds has been of interest for many years, with few new developments. Classically separation is achieved by liquid–liquid extraction and most research focuses on optimising this process. A separation method that bypasses the need for liquid–liquid extraction is reported here. The process uses dry fluorination to convert tantalum and niobium pentoxides into metal oxyfluorides. The thermal behaviour of these species is sufficiently different for separation to be achieved by preferential volatilisation. Experimental results indicate that at least two temperature ranges are suitable for separation, viz. one below 165 °C, and one above 650 °C. | en_US |
| dc.description.librarian | hb2013 | en_US |
| dc.description.uri | http://www.elsevier.com/locate/ijimpro | en_US |
| dc.identifier.citation | Pienaar, AD, Wagener, JB & Crouse, PL 2012, 'Niobium and tantalum separation by gas-phase fluorination', International Journal of Mineral Processing, vol. 114-117, no. 11, pp. 7-10. | en_US |
| dc.identifier.issn | 0301-7516 (print) | |
| dc.identifier.issn | 1879-3525 (online) | |
| dc.identifier.other | 10.1016/j.minpro.2012.08.002 | |
| dc.identifier.uri | http://hdl.handle.net/2263/21792 | |
| dc.language.iso | en | en_US |
| dc.publisher | Elsevier | en_US |
| dc.rights | © 2013 Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in International Journal of Mineral Processing.Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Mineral Processing, vol. 114-117, no. 11, 2013, DOI : 10.1016/j.minpro.2012.08.002 | en_US |
| dc.subject | Niobium tantalum separation | en_US |
| dc.subject | Niobium oxyfluoride | en_US |
| dc.subject | Tantalum oxyfluoride | en_US |
| dc.title | Niobium and tantalum separation by gas-phase fluorination | en_US |
| dc.type | Postprint Article | en_US |