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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

P. Ribagnac, G.J.-P. Deblonde, S.B. Blancher, L. Lengagne, L. Donati, C. Malimba, B. Courtaud, V. Weigel, D. Beltrami, Leaching of niobium- and REE-bearing iron ores: Significant reduction of H2SO4 consumption using SO2 and activated carbon, Separation and Purification Technology, Vol. 189, 2017

S.S. Serdyuk, V.G. Lomayev, V.I. Kuzmin, D.S. Flett, N.V. Gudkova, D.V. Kuzmin, M.A. Mulagaleeva, V.N. Kuzmina, S.N. Kalyakin, O.A. Logutenko, The Chuktukon niobium-rare earth metals deposit: Geology and investigation into the processing options of the ores, Minerals Engineering, Vol. 113, 2017

T. Makanyire, A. Jha, S. Sutcliffe, Kinetics of hydrochloric acid leaching of niobium from TiO2 residues, International Journal of Mineral Processing, Vol. 157, 2016

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

M.H. Rodriguez, G.D. Rosales, E.G. Pinna, D.S. Suarez, Effect of Na+ ion on the dissolution of ferrocolumbite in autoclave, Hydrometallurgy, Vol. 159, 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

C.E. Gibson, S. Kelebek, M. Aghamirian, Niobium oxide mineral flotation: A review of relevant literature and the current state of industrial operations, International Journal of Mineral Processing, Vol. 137, 2015

X. Yang, J. Zhang, X. Fang, Extraction kinetics of niobium by tertiary amine N235 using Lewis cell, Hydrometallurgy, Vol. 151, 2015

C.E. Gibson, S. Kelebek, M. Aghamirian, B. Yu, Flotation of pyrochlore from low grade carbonatite gravity tailings with benzohydroxamic acid, Minerals Engineering, Vol. 71, 2015

W. Lai, M. Liu, C. Li, H. Suo, M. Yue, Recovery of a composite powder from NdFeB slurry by co-precipitation, Hydrometallurgy, Vol. 150, 2014

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

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

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

S. Chehreh Chelgani, B. Hart, J. Marois, M. Ourriban, Study of pyrochlore surface chemistry effects on collector adsorption by TOF-SIMS, Minerals Engineering, Vol. 39, 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

X. Ni, M. Parrent, M. Cao, L. Huang, A. Bouajila, Q. Liu, Developing flotation reagents for niobium oxide recovery from carbonatite Nb ores, Minerals Engineering, Vol. 36-38, 2012

S. Chehreh Chelgani, B. Hart, J. Marois, M. Ourriban, Study of pyrochlore matrix composition effects on froth flotation by SEM–EDX, Minerals Engineering, Vol. 30, 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

Lantelme, F., and Groult, H., Niobium and titanium electrowinning in fused salts, Mineral Processing and Extractive Metallurgy (Trans. IMM Sec. C), Vol.119, No.2, 2010

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

Aral, H., and Bruckard, W.J., Characterisation of the Mt. Weld (Western Australia) niobium ore, Mineral Processing and Extractive Metallurgy (Trans, IMM C), Vol.117 No.4, 2008

M. Rodriguez, O. Quiroga and M. del C. Ruiz, Kinetic study of ferrocolumbite dissolution in hydrofluoric acid medium, Hydrometallurgy, Vol.85 No.2-4, 2007

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

G.L. Chen, D. Tao, H. Ren, F.F. Ji, J.K. Qiao, An investigation of niobite flotation with octyl diphosphonic acid as collector, International Journal of Mineral Processing, Vol.76 No.1-2, 2005

H. Ren, F.F. Ji, G.L. Chen, D. Tao, J.K. Qiao, An investigation of fersmite flotation., International Journal of Mineral Processing, Vol.74 No.1-4, 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

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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