423;The following optimal process conditions were determined: ore granulometric fraction (−75 + 45 µm), ABF-ore (5/1), fluorination temperature (200 C) and fluorination time
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101;Hydrometallurgy Process development for the separation of niobium and tantalum from fluoride medium using trioctyl amine and application of Taguchi ’ s method to
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121;However, the reactivity of leached ore decreases due to surface deactivation and contamination of the reactive sites (Ruiz et al. 1997). The corrosive and volatile nature of
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2014101;The process also yields a tantalum product (Ta 2 O 5 ·nH 2 O with >20 wt% Ta) even when starting from a diluted feed (39 ppm Ta). The proposed strategy paves the way for
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200261;Hydrometallurgy. Volume 64, Issue 3, June 2002, Pages 219-229. Thus, the present study contributes to the evaluation of Kab Amiri niobium–tantalum ore. It also provides
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121;HYDROMETALLURGY; Mario H. Rodriguez; the effect of alkaline fusion associated with acid leaching for the purification process of tantalum-niobium ore
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101;There is less than 300 kt Ta in the earth’s crust, and the production of primary Ta is an energy- and materials-demanding process. Ta can also be recovered from tin
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200991;Recently, a new process for the leaching of low-grade refractory niobium–tantalum ores with KOH sub-molten salt was proposed with the objective to eliminate
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Contribute to dinglei/en development by creating an account on GitHub.
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2005121;At the first stage, the soluble K 8 [(Ta,Nb) 6 O 19 nH 2 O] is obtained, and then converted into insoluble K(Ta,Nb)O 3 at the second stage. Depending on the reaction
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201611;Chemical Processing: Hydrometallurgy. January 2016; The extraction of niobium and tantalum from two tantalum-niobium ore materials obtained from Mozambique, using a combination of magnetic
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1027;Predominately found in open-pit mines, tantalum is sometimes mined underground as well. Tantalum ore grades vary but are generally somewhere between 100
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20241219;This review paper discusses the extraction processes of niobium and tantalum, encompassing hydrometallurgical, pyrometallurgical and electrometallurgical methods. The
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Natural Ta-Nb bearing ores exhibit specific properties that promote the production of fines and ultrafines, which is a source of metal loss. Embrittlement for selective liberation
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20241219;Hydrometallurgical process for tantalum recovery from epoxy-coated solid electrolyte tantalum capacitors. “valuable metals recovery by mineral processing and
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201211;regard to copper ores encompasses all of the methods used to process the ore to improve its complex ore bodies. With hydrometallurgy, primary HM ore sources of
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improvements in processing technology that apply to Ta will also benefit production of Nb. Electron-microphotograph of a tantalum ore concentrate from Rwanda consisting of around 30
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20241214;Refining and processing tantalum ore require multiple complex steps to extract the metal. Because tantalum is often found with other minerals like niobium, a multi-stage
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Fig. 1 Proposed Multi-Ore Constituent Concentration Model [25] Agulyanski [11] reported the use of 2-octanol for the separation of niobium and tantalum. The process consists of the collective
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77;This review presents an overview of the currently mined tantalite ores in Ethiopia (in particular Kenticha ores) and potentialities to extract niobium (Nb) and tantalum (Ta)
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2005111;Recently, a new process was proposed for the leaching of niobium and tantalum from a low-grade niobium–tantalum ore by the Institute of Process Engineering, Chinese
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and other associated metal values include euxinite, samarsakite and fergusonite. These minerals can be processed by the following: chlorination (Gupta and Suri, 1994b), alkali fusion followed
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51;Due to the geochemistry of the formation of these ores, they contain minerals of tantalum, niobium, tin, aluminum, cesium, potassium, fluorine, etc. (Kesler et al., 2012;
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[en] On-going technological developments, especially in the field of microelectronics and communication have reflected in concomitant increase in the demand for strategic metals such
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2005121;In the new process, low-grade niobium–tantalum ore is decomposed in fluid medium of concentrated KOH solution under atmospheric pressure, and the reaction and
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[en] On-going technological developments, especially in the field of microelectronics and communication have reflected in concomitant increase in the demand for strategic metals such
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201111;Firstly, silica-free tantalum capacitor procured after pre-processing was leached using hydrochloric acid (1-3 M) for preferred dissolution of manganese and nickel, to facilitate
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423;The following optimal process conditions were determined: ore granulometric fraction (−75 + 45 µm), ABF-ore (5/1), fluorination temperature (200 C) and fluorination time
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