Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Valérie Weigel"'
Autor:
Denis Beltrami, Cédric Malimba, Bruno Courtaud, Laetitia Lengagne, Valérie Weigel, Simon B. Blancher, Ludovic Donati, Gauthier J.-P. Deblonde, Philippe Ribagnac
Publikováno v:
Separation and Purification Technology. 189:1-10
An innovative process was developed for the leaching of niobium- and rare earth elements-bearing pyrochlores ores and the subsequent separation of Nb from the REE. Compared to the conventional Nb hydrometallurgical methods, the proposed leaching proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36428df01e822d58b730c52b923a9f22
https://doi.org/10.1016/j.seppur.2017.07.073
https://doi.org/10.1016/j.seppur.2017.07.073
Publikováno v:
Deblonde, GJP; Chagnes, A; Weigel, V; & Cote, G. (2016). Direct precipitation of niobium and tantalum from alkaline solutions using calcium-bearing reagents. Hydrometallurgy, 165, 345-350. doi: 10.1016/j.hydromet.2015.12.009. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/1118b990
The recovery of Nb(V) and Ta(V) from alkaline solutions was investigated using calcium-bearing reagents (CaCl2(aq), Ca(CH3COO)+(aq), Ca(NTA)−(aq), Ca(EDTA)2−(aq), CaCO3(s) and Ca(OH)2(s)) at 25°C. It was found that hexaniobate and hexatantalate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de17ee9dd69870d03ae838b7a5986752
https://doi.org/10.1016/j.hydromet.2015.12.009
https://doi.org/10.1016/j.hydromet.2015.12.009
Publikováno v:
Dalton Transactions. 45:19351-19360
Solvent extraction of Nb(V) from alkaline aqueous media using quaternary ammonium solutions, especially Aliquat® 336 diluted in an aliphatic diluent, was investigated. The hexaniobate ions (HxNb6O19x−8) were extracted into the organic phase with v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7e378a1703c322ed9cf3f1407252f28
https://doi.org/10.1039/c6dt03873e
https://doi.org/10.1039/c6dt03873e
Autor:
Romaric Houdard, Gauthier J.-P. Deblonde, Valérie Weigel, Denis Beltrami, Florent Delvallée, Sarah Bélair, Quentin Bellier
Publikováno v:
Deblonde, GJP; Weigel, V; Bellier, Q; Houdard, R; Delvallée, F; Bélair, S; et al.(2016). Selective recovery of niobium and tantalum from low-grade concentrates using a simple and fluoride-free process. Separation and Purification Technology, 162, 180-187. doi: 10.1016/j.seppur.2016.02.025. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/7b39n188
© 2016 Elsevier B.V. All rights reserved. The current hydrometallurgical processes used for niobium and tantalum recovery are operated in strongly acidic and fluoride-containing solutions. To avoid the use of these highly toxic media, a fluoride-fre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d185c27777dc97949d723dbe7b2fea8
https://escholarship.org/uc/item/7b39n188
https://escholarship.org/uc/item/7b39n188
