Chapter 16 Beneficiation of Niobium and Tantalum from …
M. Nete and W. Purcell. Abstract The extraction of niobium and tantalum from two tantalum-niobium ore materials obtained from Mozambique, using a combination of magnetic separation, acid leaching, solvent extraction and ion exchange methods was investigated. One sample consisted mainly of manganotantalite while the other of ferrotantalite.
Extractive metallurgy of columbite-tantalite ore: A …
In this study, benzohydroxamic acid (BHA) and sodium isobutyl xanthate (SIBX) were introduced as a mixed collector system to improve the flotation of …
Bogale Tadesse (PhD)
View all. 2 articles. 2 articles. available. not available. Based on funding mandates. ... Flotation behavior of pyrite in sub-bituminous and meta-bituminous coals with starch depressant in a microflotation cell. ... Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores.
Flotation of Tantalum/Niobium Ores | Semantic Scholar
Mineralogical factors affecting the separation behavior of Ta-Nb-bearing minerals in the gravity field: mineral grain size, liberation, and association relationship. Gravity separation is the primary method used to beneficiate Ta-Nb-bearing minerals, however, it performs poorly in low-grade and fine-grained ores.
Handbook of Flotation Reagents: Chemistry, Theory and …
Presently, froth flotation of columbite-tantalite is of interest, ... especially in view of expanding mining operations to the north and the increasing impact of climate change-originated weather ...
Effect of surface modification by lead ions on …
In this study, surface modification of columbite-tantalite by Pb 2+ ions and its effect on the flotation with BHA as the collector were investigated using micro …
Separation and isolation of tantalum and niobium from tantalite …
1. Introduction. Tantalum and niobium are frequently found together in nature and are simultaneously extracted from a variety of minerals (Roskill Information 10th ed., 2005a).The most abundant Nb and Ta containing mineral is columbite–tantalite (Fe,Mn)(Nb,Ta) 2 O 6. The Nb rich mineral columbite normally contains 5–30% Ta 2 O 5 …
Handbook of Flotation Reagents: Chemistry, Theory …
Researchers have studied columbite-tantalite flotation using collectors such as benzyl arsenic acid, sodium oleate, sodium alkyl sulphonate, benzohydroxamic acid, …
Efficient Recovery of Niobium and Tantalum from
Niobium and tantalum, characterized by high melting point, remarkable corrosion resistance, and good cold workability, are widely used in steel, petrochemical, electronics, and aerospace [1, 2].The main ore sources for the production of tantalum and niobium include pyrochlore, microlite, tantalite, columbite, and columbo-tantalite …
Tantalum (Ta) [Z = 73]
The columbite group is a solid solution with varying proportions of Nb or Ta in its composition. According to the International Mineralogical Association (IMA), 'tantalite' or 'coltan' are not scientific names, yet they are widely used. Many specimens commonly named tantalite are actually minerals of the columbite or tapiolite group ...
Mixed collector systems in flotation
In recent years, interest has increased for the use of mixtures of anionic/ nonionic and anionic/cationic collectors for enhancing the selectivity and recovery. This paper reviews the flotation studies reported on the use of various collector combinations and discusses the behaviour of mixed collectors at the mineral/water interface.
Columbium Tantalum Flotation
Flotation recoveries of columbite, tantalite, and pyrochlore were complete with 40 mg per liter sodium oleate at pH 8. Under the same conditions, tapiolite recovery was only 70 percent. Data for this test …
An Investigation on Flotation Process of Low-Grade
Oct 2012. MINER ENG. Xiao Ni. Marc Parrent. Mingli Cao. Qi Liu. View. Show abstract. Request PDF | On Aug 1, 2019, Willie Nheta and others published An Investigation on Flotation Process of Low ...
Tantalum (Ta) [Z = 73]
First Online: 12 April 2022. 119 Accesses. Part of the book series: Springer Textbooks in Earth Sciences, Geography and Environment ( (STEGE)) Abstract. The primary ore of …
An investigation of niobite flotation with octyl diphosphonic …
Columbite-tantalite is the most abundant Nb- and Ta-containing mineral. The flotation is a promising method for fine columbite-tantalite recovery. However, few studies have been performed on the surface modification and enhanced flotation recovery of columbite-tantalite in presence of benzohydroxamic acid (BHA).
Tantalum and Niobium production
The gravity separation takes advantage of the high density of the Ta-bearing phases, with specific density in the range 6 to 8. − Selective reverse flotation to concentrate the finest material − Low and high intensity magnetic separation to remove companion magnetic phases. − Thickening circuit to recycle the process water.
Utilisation of hydroxamates in minerals froth flotation☆
Columbite-tantalite is the most abundant Nb- and Ta-containing mineral. The flotation is a promising method for fine columbite-tantalite recovery. However, few studies have been performed on the surface modification and enhanced flotation recovery of columbite-tantalite in presence of benzohydroxamic acid (BHA).
A mixed collector system for columbite-tantalite flotation
Effective collector is essential in columbite-tantalite flotation from gravity tailings, as well as in the sustainable utilisation of Ta-Nb resources. In this study, benzohydroxamic acid (BHA) and sodium isobutyl xanthate (SIBX) were introduced as a mixed collector system to improve the flotation of columbite-tantalite at reduced cost. An increase in columbite …
A mixed collector system for columbite-tantalite flotation
A mixed collector system for columbite-tantalite flotation @article{Cao2020AMC, title={A mixed collector system for columbite-tantalite flotation}, author={Miao Cao and Hao Bu and Yude Gao}, journal={Minerals Engineering}, year={2020}, pages={106715} } M. Cao, Hao Bu, Yude Gao; Published 5 December 2020; Materials Science; Minerals Engineering
Effect of surface modification by lead ions on flotation …
Ta and Nb are listed in the category of strategic metals. Columbite-tantalite is the most abundant Nb- and Ta-containing mineral. The flotation is a promising method for fine columbite-tantalite recovery. However, few studies have been performed on the surface modification and enhanced flotation recovery of columbite-tantalite in presence …
Effect of High-Power Nanosecond Electromagnetic …
One of the actual problems in flotation of complex niobium-tantalum ores is to develop the advanced methods to improve rare metals mineral processing efficiency …
(PDF) Beneficiation and Separation of Egyptian Tantalite Ore …
Ilmenite is a very important source for titanium. Egyptian ilmenite ore contains 26.20 % TiO2, 50.09 % Fe2O3 and 14.35 % SiO2. Ore contaminates of silica and iron oxides should be removed to ...
Mineral Resource of the Month: Tantalum
Tantalum is almost always found with niobium. Although it is a metal, tantalum is not found in metallic form in nature. It is found in tantalum-bearing oxide minerals such as euxenite, microlite, polycrase, tantalite, columbite and wodginite. Tantalum minerals contain 12 to 84 percent tantalum pentoxide; however, tantalum ores …
Effect of surface modification by lead ions on flotation …
The flotation is a promising method for fine columbite-tantalite recovery. However, few studies have been performed on the surface modification and enhanced flotation recovery of columbite ...
Flotation of Tantalum/Niobium Ores | Semantic Scholar
Mineralogical factors affecting the separation behavior of Ta-Nb-bearing minerals in the gravity field: mineral grain size, liberation, and association relationship. Gravity …
Surface modification of hemimorphite with lead ions and …
The effect of lead ions on the flotation behavior of hemimorphite with sodium oleate as collector was assessed through micro-flotation experiments. Fig. 2 shows the flotation result of hemimorphite as a function of the concentration of sodium oleate in the absence and presence of 5 × 10 −5 mol/L lead ions at the pH of 7.5. As shown in Fig. 2 ...
Tantalite Ore Mineral Deposits in Nigeria with their …
It can be found in some states in Nigeria in traces, small and huge deposits such as; Nasarawa, Kogi, Osun, Ekiti, Kwara, and Cross Rivers. Tantalite is the principal ore of tantalum. Tantalum has a symbol of Ta, melting point of 3,020 °C, and a boiling point of 5,457 °C. Tantalite is characterized as a black or brown mineral and is of 2 ...
A self-assembly mixed collector system and the mechanism …
1. Introduction. Flotation separation has been widely used in the process of ore dressing because of its high separation efficiency and economy (Chen et al., 2021a, Liu et al., 2021, Wang et al., 2021a, Xie et al., 2020b).Selectively adsorbing appropriate collectors on the surface of valuable minerals will enhance the difference in …
Niobium–tantalum oxide minerals in alluvial placer
Niobium (Nb) and tantalum (Ta) are transition metals in group 5 of the periodic table and have nearly similar chemical and physical properties (Nowak and Ziolek 1999).Niobium is a soft and ductile metal with a variety of uses such as niobium carbide, steel alloys and conducting magnets (Mitchell 2015).The world's mining production of Nb …
Niobium-Tantalum Ore Beneficiation
The chemical formula of niobium-iron ore-tantalite is AB2O6, both of which are referred to as niobium-tantalum. Where A in the formula stands for iron and manganese, and B stands for niobium and tantalum. The magnetization rate of niobium-iron ore-tantalite is (22.1 to 37.2) × 10-6. The dielectric coefficient of niobium-iron ore is 10 to 12 ...
