An overview on recent separation and purification strategies for recovery of Nb and Ta from primary and secondary ore sources
TF de Oliveira, JAS Tenório, DCR Espinosa - Minerals Engineering, 2023 - Elsevier
This paper focuses on processing technologies for the exploitation and purification of Nb
and Ta from primary and secondary ore sources that have been used for extraction of these …
and Ta from primary and secondary ore sources that have been used for extraction of these …
Niobium and tantalum recovery from the primary source and from tin slag, an industrial challenge: A review
JM de Oliveira, IA Anes, JL Coleti… - … Canadian Journal of …, 2023 - Wiley Online Library
Abstract Niobium (Nb) and Tantalum (Ta) are used to increase materials' mechanical
resistance and produce lighter alloys. Worldwide Nb production reached 78 000 t in 2020 …
resistance and produce lighter alloys. Worldwide Nb production reached 78 000 t in 2020 …
Fluoride-free, simple, and environmentally friendly extraction of mixed oxides of niobium and tantalum from the Nigerian and Rwandan columbite-tantalite …
We report a fluoride-free comparative study with promising results of an alkali-assisted
roasting with KOH and water-based leaching of the Nigerian and Rwandan columbite …
roasting with KOH and water-based leaching of the Nigerian and Rwandan columbite …
Advancements in the extraction of niobium and tantalum: Innovative strategies in hydrometallurgical processes
DMC Machaca, TC de Carvalho, JAS Tenório… - Minerals …, 2025 - Elsevier
This article presents a comprehensive analysis of the challenges and advancements in the
extraction of niobium (Nb) and tantalum (Ta), focusing on global production and the growing …
extraction of niobium (Nb) and tantalum (Ta), focusing on global production and the growing …
Optimization of gold dissolution parameters in acidified thiourea leaching solution with hydrogen peroxide as an oxidant: Implications of roasting pretreatment …
The nature of gold (Au) ore deposits plays an essential role in determining the best gold
recovery method as an alternative to cyanidation, considering environmental concerns …
recovery method as an alternative to cyanidation, considering environmental concerns …
A comprehensive review on recent progress in beneficiation of Nb-bearing minerals/Nb ores
T Congzhong, Z Wenjie, L Fengyang, L Yuxin… - Minerals …, 2024 - Elsevier
Mainly produced by Brazil and Canada, the global production of niobium (Nb) surpassed
79,000 tons in 2022. Among the 150 kinds of Nb-bearing minerals, pyrochlore, columbite …
79,000 tons in 2022. Among the 150 kinds of Nb-bearing minerals, pyrochlore, columbite …
Potential Uses of Artisanal Gold Mine Tailings, with an Emphasis on the Role of Centrifugal Separation Technique
Few investigations have focused on the potential uses of artisanal gold (Au) mine tailings,
despite the fact that artisanal gold mining activity contributes to environmental issues such …
despite the fact that artisanal gold mining activity contributes to environmental issues such …
[HTML][HTML] Pyrometallurgical approach in the recovery of Niobium and Tantalum
NS Nzeh, M Mokgalaka, N Maila… - Extraction Metallurgy …, 2023 - intechopen.com
The pyrometallurgical methods of the recovery of various critical metals have been
established. Certain pyrometallurgical approaches for niobium (Nb) and tantalum (Ta) …
established. Certain pyrometallurgical approaches for niobium (Nb) and tantalum (Ta) …
Efficient Extraction of Ta and Nb from a Coltan Ore Through Alkaline Roasting, Water Leaching, Precipitation, and Oxalic Acid Leaching
A Shikika, F Zabene, FA Muvundja… - Journal of Sustainable …, 2022 - Springer
Current industrial processes of tantalum (Ta) and niobium (Nb) extraction from primary
resources rely in majority on hydrofluoric (HF) acid leaching, which is raising material …
resources rely in majority on hydrofluoric (HF) acid leaching, which is raising material …
Processing of mineralized microgranite dike for the recovery of niobium, tantalum, and rare earth elements using 1, 2-propyleneglycol extractant
AH Orabi, NI Falila, HM Salem… - Canadian …, 2024 - Taylor & Francis
ABSTRACT A number of strategic and economic rare-metal and Rare Earth Elements
(REEs)-bearing minerals were recorded in mineralized microgranite dike (MMGD) from Ras …
(REEs)-bearing minerals were recorded in mineralized microgranite dike (MMGD) from Ras …