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W. Purcell, H. Potgieter, M. Nete, H. Mnculwane, Possible methodology for niobium, tantalum and scandium separation in ferrocolumbite, Minerals Engineering, Vol. 119, 2018

M. Nete, W. Purcell, J.T. Nel, Non-fluoride dissolution of tantalum and niobium oxides and their separation using ion exchange, Hydrometallurgy, Vol. 173, 2017

G.J.-P. Deblonde, V. Weigel, Q. Bellier, R. Houdard, F. Delvallée, S. Bélair, D. Beltrami, Selective recovery of niobium and tantalum from low-grade concentrates using a simple and fluoride-free process, Separation and Purification Technology, Vol. 162, 2016

G.J.-P. Deblonde, A. Chagnes, S. Bélair, G. Cote, Solubility of niobium(V) and tantalum(V) under mild alkaline conditions, Hydrometallurgy, Vol. 156, 2015

M.H. Rodriguez, G.D. Rosales, E.G. Pinna, D.S. Suarez, Extraction of niobium and tantalum from ferrocolumbite by hydrofluoric acid pressure leaching, Hydrometallurgy, Vol. 156, 2015

M. Nete, W. Purcell, J.T. Nel, Separation and isolation of tantalum and niobium from tantalite using solvent extraction and ion exchange, Hydrometallurgy, Vol. 149, 2014

X. Yang, J. Zhang, X. Fang, X. Wang, Purification and stripping of tantalum from organic phase and elimination of emulsification by ultrasound, Hydrometallurgy, Vol. 146, 2014

M.J. Ungerer, D.J. van der Westhuizen, G. Lachmann, H.M. Krieg, Comparison of extractants for the separation of TaF5 and NbF5 in different acidic media, Hydrometallurgy, Vol. 144-5, 2014

S. Chehreh Chelgani, B. Hart, M. Biesinger, J. Marois, M. Ourriban, Pyrochlore surface oxidation in relation to matrix Fe composition: A study by X-ray photoelectron spectroscopy, Minerals Engineering, Vol. 55, 2014

X. Yang, X. Wang, C. Wei, S. Zheng, Q. Sun, D. Wang, Extraction kinetics of tantalum by MIBK from pulp using Lewis cell, Hydrometallurgy, Vol. 131-132, 2013

A.D. Pienaar, J.B. Wagener, P.L. Crouse, Niobium and tantalum separation by gas-phase fluorination, International Journal of Mineral Processing, Vol. 114-117, 2012

M.J. Kabangu, P.L. Crouse, Separation of niobium and tantalum from Mozambican tantalite by ammonium bifluoride digestion and octanol solvent extraction, Hydrometallurgy, Vol. 129-130, 2012

O. Sanda, E.A. Taiwo, Solvent extraction of tantalum(V) from aqueous sulphate/fluoride solution using trioctyl phosphine oxide in MIBK, Hydrometallurgy, Vol. 127-128, 2012

Zhaowu Zhu, Chu Yong Cheng, Solvent extraction technology for the separation and purification of niobium and tantalum: A review, Hydrometallurgy, Vol. 107, No. 1-2, 2011

X. Wang, S. Zheng, H. Xu, Y. Zhang, Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system, Hydrometallurgy, Vol. 98, No. 3-4, 2009

Gul, A., Separation of microlite from zircon by flotation, Canadian Metallurgical Quarterly, Vol.45 No.1, 2006

H. Zhou, S. Zheng, Y. Zhang, Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution. Hydrometallurgy, Vol.80 No.1-2, 2005

H.m. Zhou, D.q. Yi, Y. Zhang, S.l. Zheng, The dissolution behavior of Nb2O5, Ta2O5 and their mixture in highly concentrated KOH solution. Hydrometallurgy, Vol.80 No.1-2, 2005

A. Agulyansky, L. Agulyansky, V.F. Travkin, Liquid-liquid extraction of tantalum with 2-octanol., Chemical Engineering and Processing, Vol.43 No.10, 2004

M. Rodriguez, J. Rivarola, M. del C. Ruiz, The effects of carboxylic acid addition on hydrofluoric acid autoclave leaching of a ferrocolumbite. Hydrometallurgy, Vol.74 No.1-2, 2004

O.M. El Hussaini, N.M. Rice, Liquid-liquid extraction of niobium and tantalum from aqueous sulphate/fluoride solutions by a tertiary amine. Hydrometallurgy, Vol.72 No.3-4, 2004

Dutra, A. J. B. da Silva, F. T. Espinola, A. Tantalum electrowinning from molten fluorides: characterization of structure and defects. Trans. Insitution Mining & Metallurgy, Section C, Vol. 110, May/August 2001

Bose, D. K., Gupta, C. K., Extractive Metallurgy of Tantalum. Mineral Processing and Extractive Metallurgy Review. Vol. 22 Numbers 4/6, 2001

J.F. Oliveira, S.M. Saraiva, J.S. Pimenta, A.P.A. Oliveira. Kinetics of Pyrochlore Flotation from Araxa Mineral Deposits. Minerals Engineering, Vol.14, No.1, 2001



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