Niobium and tantalum are chemically similar and are associated with each other in nature which makes it very difficult to separate. For many years, the separation of tantalum from niobium involved the fractional crystallization of potassium heptafluorotantalate away from potassium oxypentafluoroniobate monohydrate, this method has been supplanted by solvent extraction from fluoride-containing solutions by the use of solvent extractants such as Octanol, bis(2-ethylhexyl)phosphoric acid (DEHPA), Alamine 336, methyl isobutyl ketone (MIBK), tri-n-butyl phosphate (TBP) or cyclohexanone. A detailed review of the various processes involved in the breakdown treatment of niobium and tantalum primary sources, extraction and separation and newer proce...
The extraction of niobium and tantalum from aqueous solutions of their oxalato and fluoro complexes ...
The suitability of Liquid-liquid extraction (LLE) for the selective extraction of chemically similar...
The extraction of niobium (Nb) and tantalum (Ta) from hydrochloric acid media by bis(2-ethylhexyl) h...
Niobium and tantalum are chemically similar and are associated with each other in nature which makes...
Niobium and tantalum are chemically similar and are associated with each other in nature which makes...
Thesis (MSc (Chemistry))--North-West University, Potchefstroom Campus, 2013.Niobium (Nb) and tantalu...
Niobium, also known as columbium, is one of the new industrial metals likely to play an important ro...
A study has been carried out on Ta and Nb recovery by a liquid-liquid extraction process using 4-met...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
The current hydrometallurgical processes used for niobium and tantalum recovery are operated in stro...
The render study on physically upgrade ore sample from Abu Rusheid contents 22.2 in wt. % Nb and 2.5...
The use of liquid-liquid extraction for the separation of tantalum from niobium was demonstrated. Ta...
The Nitrofluor process provides a through method of dissolving the columbite in a nonaqueous inorgan...
The extraction of niobium and tantalum from aqueous solutions of their oxalato and fluoro complexes ...
The suitability of Liquid-liquid extraction (LLE) for the selective extraction of chemically similar...
The extraction of niobium (Nb) and tantalum (Ta) from hydrochloric acid media by bis(2-ethylhexyl) h...
Niobium and tantalum are chemically similar and are associated with each other in nature which makes...
Niobium and tantalum are chemically similar and are associated with each other in nature which makes...
Thesis (MSc (Chemistry))--North-West University, Potchefstroom Campus, 2013.Niobium (Nb) and tantalu...
Niobium, also known as columbium, is one of the new industrial metals likely to play an important ro...
A study has been carried out on Ta and Nb recovery by a liquid-liquid extraction process using 4-met...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
International audienceA study has been carried out on Ta and Nb recovery by a liquid-liquid extracti...
The current hydrometallurgical processes used for niobium and tantalum recovery are operated in stro...
The render study on physically upgrade ore sample from Abu Rusheid contents 22.2 in wt. % Nb and 2.5...
The use of liquid-liquid extraction for the separation of tantalum from niobium was demonstrated. Ta...
The Nitrofluor process provides a through method of dissolving the columbite in a nonaqueous inorgan...
The extraction of niobium and tantalum from aqueous solutions of their oxalato and fluoro complexes ...
The suitability of Liquid-liquid extraction (LLE) for the selective extraction of chemically similar...
The extraction of niobium (Nb) and tantalum (Ta) from hydrochloric acid media by bis(2-ethylhexyl) h...