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Olushola, Ayanda S. & Folahan, Adekola A. (2011). A review of niobium-tantalum separation in hydrometallurgy. Journal of Minerals and Materials Characterization and Engineering, 10 (3): 245-256. Niobium and tantalum are chemically similar and are associated with each other in nature which makes it very difficult to separate.


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Kabangu M J, Crouse P L. Separation of niobium and tantalum from Mozambican tantalite by ammonium bifluoride digestion and octanol solvent extraction. Hydrometallurgy, 2012, 129-130:151 [21] Wang W W, Pranolo Y, Cheng C Y. Recovery of scandium from


Title : A review on extractive metallurgy of tantalum and niobium: Language : English: Author, co-author : Shikika, Alidor [Université de Liège - ULiège > > > >]: Sethurajan, Manivannan [Université de Liège - ULiège > Département ArGEnCo > Traitement et recyclage des matières minérales >]: Muvundja, Fabrice [Higher Pedagogical Institute of Bukavu, Bukavu, DRC > > > >]


Other authors investigated the recovery of niobium and tantalum from ore by using highly concentrated caustic potash as an alternative to hydrofluoric acid and they concluded that almost complete extraction of both niobium and tantalum is achieved at temperatures above 300 °C (Wang et al., 2009, Zhou et al., 2005).


A kinetic study of the leaching of a low-grade niobium—tantalum ore by concentrated KOH solution. Hydrometallurgy, 80(3), pp.170–178. CrossRef Google Scholar


process tantalum hydrometallurgy Mar 28, 2013 specifiion, the process provides for substantially pure tantalum oxide, substantially pure niobium oxide and mixtures of these oxides to be produced. in an embodiment, the present specifiion relates to a pyrometallurgical and hydrometallurgical process for upgrading tantalum and niobium ores and .


A review on extractive metallurgy of tantalum and niobium. Hydrometallurgy ( IF 4.156 ) Pub Date : , DOI: 10.1016/j.hydromet.2020.105496. A. Shikika, M. Sethurajan, F. Muvundja, M.C. Mugumaoderha, St. Gaydardzhiev. Abstract On-going technological developments, especially in the field of microelectronics and communication have ...


Abstract:With the rapid development of tantalum-niobium industry in China, three wastes pollution should not be underestimated.It is of practical and economic significance to develop novel treatment technology for three wastes of tantalum-niobium hydrometallurgy.


Green extraction of niobium and tantalum for Ethiopian kenticha ores by hydrometallurgy process: a review Special Issue - 2018 Berhe Goitom Gebreyohannes,1 Velazquez del Rosario Alberto, 2 Bogale Tadesse, 3 Abubeker Yimam, 4 Girma Woldetinsae, 5 1Department of Chemistry, College of Natural and Computational Sciences, Mekelle …


Tantalum-niobium hydrometallurgy seems to have few products and a relatively simple industrial chain, but we continue to invest in technology research and development every year. In the past three years, the compound growth rate of R&D investment of the company has exceeded 60%.Compared with the traditional hydrometallurgical process, there has ...


The Tantalum–Niobium International Study Center (TIC) indicates that the global production of tantalum was 2800 tons in 2014, and at that time, it was sourced from 1400 tons of tantalum mineral concentrate, 370 tons of tin slag, and 990 tons of scrap, respectively . Due to recent developments, the recycling of tantalum has gradually begun to ...


A Review of Niobium-Tantalum Separation in Hydrometallurgy. January 2011. Journal of Minerals and Materials Characterization and Engineering 10 (03):245 …


Separation of zirconium-95 from niobium-95, and the separation of zirconium-95 and niobium-95 from several other nuclides. Analytical Chemistry 1968, 40 (3), 641-643.


In the chlorination process, chlorine gas or hydrogen applied to tantalum and niobium raw ore or ferrous chloride applied to tantalum capacitors [15,30,31,32] have both been studied. In most of the studies mentioned above, the recovery of tantalum is higher in the hydrometallurgy process but the purify of tantalum is higher in the chlorination ...


Extractive Hydrometallurgy of Ta and Nb ... Niobium and Tantalum are sisters elements, that co-occurs in the same type of mineral deposits and that have very similar chemical properties. That is why both of these elements have similar …


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 …


A Review of Niobium-Tantalum Separation in Hydrometallurgy Olushola S. Ayanda1* and Folahan A. Adekola2 1Department of Chemistry, Faculty of Applied Sciences, Cape Peninsula University of Technology, P.O. Box 652, Cape Town, South Africa. 2Department of Chemistry, University of Ilorin, P.M.B 1515, Ilorin, Nigeria.


Tantalum niobium hydrometallurgy products benefit from the rapid development of science and technology, expanding application areas, in addition to the traditional application fields remain relatively stable, in recent years in 5 g industrial chain, 3D , human bones medical, aerospace, semiconductor, such as new energy battery industry ...


Kabangu MJ, Crouse PL (2012) Separation of niobium and tantalum from Mozambican tantalite by ammonium bifluoride digestion and octanol solvent extraction. Hydrometallurgy 129–130:151–155 CrossRef Google Scholar


This section describes major technological innovations in chemical separation processes to recover various metals such as nickel, cobalt, copper, gold, zinc, titanium, niobium, tantalum, rare earths, palladium, and platinum from different source materials based on leaching at atmospheric and elevated pressures, heap leaching, solvent extraction ...


DOI: 10.1016/j.hydromet.2020.105496 Corpus ID: 225129305. A review on extractive metallurgy of tantalum and niobium @article{Shikika2020ARO, title={A review on extractive metallurgy of tantalum and niobium}, author={A. Shikika and Manivannan Sethurajan and F. Muvundja and Mac C. Mugumaoderha and Stoyan Gaydardzhiev}, journal={Hydrometallurgy}, year={2020}, …


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The decomposition of niobium-tantalum ore is the key technology in niobium-tantalum hydrometallurgy. The traditional decomposition method of niobium-tantalm ore is the hydrofluoric acid method which brings serious environment pollution of fluorin. Moreover, it


A 2-stage scrubbing of the tantalum-laden organic phase with 0.5N HF-2.0N H2SO4 was said to reduce the niobium contamination in tantalum to less than 250ppm. fVol.10, No.3 A Review of Niobium-Tantalum Separation 251 The pure tantalum in the form of H2TaF7 was then finally stripped with de-mineralized water.


A mixture of pure Ta 2 O 5 and Nb 2 O 5 was dissolved using two different fluxes, namely NH 4 F·HF and Na 2 HPO 4 /NaH 2 PO 4 ·H 2 O. Selective precipitation and ion exchange were used as separation techniques. Selective precipitation using p-phenylediamine in a fluoride matrix resulted in the isolation of 73(3)% tantalum accompanied by 23(5)% …


Gupta CK, Suri AK. Niobium and Tantalum Separation Process. Extractive Metallurgy of Niobium. 1994. He C, Liu Z, Zhang H. Treatment of fluorine-containing waste gas from hydrometallurgy of tantalum and niobium ore. Nonferrous Metals. 19984141 142. Hong-ming Z, Dan-qing Yi, Zhang Yi, et al. Processing Extraction And Refining Of Tantalum Plant


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Wang X H, Zheng S L, Xu H B, et al. Leaching of niobium and tantalum from a low-grade ore using a KOH roast-water leach system[J]. Hydrometallurgy, 2009, 98(3/4): 219-223. 87


M.J. Kabangu and P.L. Crouse, Hydrometallurgy 129–130, 151 (2012). Article Google Scholar 22. M. Nete, Separation and purification of niobium and tantalum from synthetic and natural compounds, PhD Thesis, University of …


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The decomposition of niobium-tantalum ore is the key technology in niobium-tantalum hydrometallurgy. The traditional decomposition method of niobium-tantalm ore is the hydrofluoric acid method which brings serious environment pollution of fluorin. Moreover, it


Niobium and tantalum are valued for their uses in nuclear, steel, aviation and electronics industries. This paper elucidates the development of a multistage counter-current separation process for obtaining pure niobium and tantalum from the hydrofluoric acid solution of Coumbite-Tantalite ore (leach liquor), with trioctyl amine (TOA) as the extractant solvent.