This study focused on the leaching of uranium and thorium from a high grade Ethiopian tantalite ore using sulfuric acid. The effects of variables such as acid concentration, temperature and leaching time were studied. In general, the leaching efficiency of uranium increases with increasing temperature from 100 to 300 °C whereas the opposite ...
WhatsApp: +86 18221755073This work aims at recovery of tantalum and niobium from Abu Dabbab deposits at the Eastern Desert of Egypt. The beneficiation was successfully performed using shaking table concentrator and carpco magnetic separator.
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WhatsApp: +86 18221755073PDF | On Dec 12, 2014, Xu-Dong Che and others published Corrigendum to "In situ U–Pb isotopic dating of columbite–tantalite by LA-ICP-MS" [Ore Geol. Rev. 65 (2015) 979-989] | Find, read ...
WhatsApp: +86 18221755073Mulugeta et al. focused on the leaching of uranium and thorium from a high-grade Ethiopian tantalite ore using sulphuric acid. The amount of uranium leached increased from 69.1% at a contact time ...
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WhatsApp: +86 18221755073For the complex and difficult-to-select tantalum-niobium ore, we generally use a combination of gravity beneficiation, flotation, magnetic separation, and a combination of multiple methods. Before determining the …
WhatsApp: +86 18221755073The final step in this study was to investigate the possible beneficiation of the tantalite ore by combining the acid leaching with the magnetic removal and microwave dissolution of the mineral. The mineral sample which was investigated possessed minute magnetic properties and small amounts of Ta and Nb (1.79 and 1.69 % respectively) together ...
WhatsApp: +86 18221755073mineral is known as columbite; when the reverse is true the proper name is tantalite. Coltan ore exist in all continents but most deposits with relatively high niobium or tantalum content are small and erratically distributed. Most of the niobium and tantalum metal produced todays extracted from columbite-tantalite ore is obtained from Africa,
WhatsApp: +86 18221755073Finally, the dissolution of Kenticha tantalite ore in KOH fusion and the hydro leaching systemwas studied at 400 0C for one hour reaction time. From the dissolved solution, niobium and tantalum were extracted from the neutralized alkaline dissolved and hydrolyzed solution with a new greener process, i.e., EMIC/AlCl3 media, as the ionic liquid ...
WhatsApp: +86 18221755073Solvent extraction technique is widely used in the separation of tantalum and niobium minerals from their ores. The use of ammonium biflouride (NH4F.HF) as fluoride source was proposed to...
WhatsApp: +86 18221755073Abstract. Aim: This study investigates the dissolution of tantalite mineral from granitic pegmatite in Okpella, Northern Edo State, Nigeria. Study Design: Elemental and mineral composition analysis of tantalite ore sample from Okpella was carried out using X-ray fluorescence and X-ray diffraction. Response Surface Methodology (RSM) and the shrinking …
WhatsApp: +86 18221755073Processing of tantalite ore is started by ore milling to obtain good liberation of tantalum minerals, and thensubjected to a series of physical processes involving gravity separation tec hniques.
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WhatsApp: +86 18221755073Tantalite-niobium Iron Ore Beneficiation Process. The various minerals in this type of ore have been basic monomer dissociation, the useful mineral density is greater than 4, and some minerals are magnetic. The …
WhatsApp: +86 18221755073It is often time referred to as tantalite [(Fe,Mn)(Ta,Nb) 2 O 6 ] when Ta 2 O 5 content in the mineral ore is significantly greater than Nb 2 O 5 [4]; and at times, referred to as columbite ...
WhatsApp: +86 18221755073Decomposition of the Kenticha mangano-tantalite ore by HF/H2SO4 and KOH fusion. Physicochem Probl Miner Process. 54(2):406–414. Google Scholar. Tadesse S, Hailu K, Demessie M. 2002. A geological excursion to the Mesozoic sediments of Abay Basin (Blue Nile), recent volcanics of the Ethiopian Main Rift and basement rocks of the Adola area.
WhatsApp: +86 18221755073Experiments on the kinetics of dissolution of a Nigerian tantalite ore in hydrochloric acid medium have been undertaken. The effects of temperature, acid concentration, stirring rate and particle size on the dissolution rate have been investigated.
WhatsApp: +86 18221755073Combined mineralogical-geochemical-geochronological signatures of columbite-tantalite ores are used to trace the origin of ore concentrates. Location of important ore provinces with Nb-Ta mining ...
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WhatsApp: +86 18221755073Ore from the Jinzhulong Ta–Nb deposit was processed using a combination of gravity concentration and magnetic separation to upgrade the …
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WhatsApp: +86 18221755073However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite's 5.2). [3] Iron-rich tantalite is the mineral tantalite-(Fe) or ferrotantalite and manganese-rich is tantalite-(Mn) or manganotantalite.
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