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In this work, a method called "sulfuric acid curing" was proposed, aiming to extract rare earth element scandium from silicates. Sulfuric acid … Expand. 2. Save. Alert. Research Feed. Study on uranium recovery from tungsten residue: separation of U from Fe, Mn, Zr, Ti, Th, and Sc with mixture of N235 and TBP. Xueming Zhong, Maosheng Fu ...
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A cation exchange mechanism of Sc(III) in [C 8 mim][PF 6] and Cyanex 925 is proposed by study of the influence of anionic and cationic species on the extraction. The coefficient of the equilibrium equation of Sc(III) was confirmed by slope analysis of log D Sc vs log [Cyanex 925], and the loading capacity also confirmed the stoichiometry of ...
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At the present time, the extraction of scandium from titanium, tungsten, uranium residues, red mud and phosphogypsum by IX have been made. The objective of this study is determining the extraction possibility of scandium from the leach solution of lateritic nickel-cobalt ore by ion exchange chromatography using various resins.
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The program will recover scandium as scandium oxide (Sc 2 O 3), and TREE+Y as a bulk concentrate. The Phase 3 hydrometallurgical flowsheet …
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More than 99% of vanadium was selectively adsorbed from the hydrochloric acid leaching solution under the conditions of pH value of 1.8, volume ratio of leaching solution to resin of 10, and flow rate of 3.33 mL/min. Maximum extraction and separation of scandium was observed from the acid leaching solution at an aqueous pH value of 0.2.
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Nigel Ricketts, our Process Engineering expert and Manager of Studies in Queensland, recently presented a paper at TMS 2019 in Texas on scandium solvent extraction. If you are a process engineer interested in scandium processing techniques, or a mining professional looking at scandium opportunities, this condensed version of the technical paper might be of interest to you.
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In this study, a roasting-hydrolysis-acid leaching process is used to extract scandium from the scandium rough concentrate. The scandium rough concentrate containing Sc2O3 of 76.98 g/t was obtained by magnetic separation, gravity separation, and electric separation from Sc-bearing Vi-Ti magnetite tailings in the Panxi area of China. The majority of scandium in scandium rough concentrate …
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So there is one unpaired electron in the vicinity of a scandium atom. Electron configuration of scandium: {eq}rm 1s^22s^22p^63s^23p^64s^23d^1 {/eq} Become a member and unlock all Study Answers ...
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Production of high-performance aluminium-scandium master alloy using the scandium oxide from RTFT is also reportedly being trialled by Rio Tinto. "This breakthrough on scandium is a great example of how we are looking at our operations across the world with fresh eyes to see how we can extract value from by-product streams," stated Jean ...
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Extraction of scandium(III) from acidic solutions using organo-phosphoric acid reagents_ A comparative study.pdf Content available from Brajamohan Murmu: 1-s2.0-S39412-main.pdf
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The overall extraction of scandium from oxide into fluoride and from fluoride to the aluminium-scandium master alloy is 88.5% with an average scandium concentration in the …
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The scandium concentrate used in the leaching experiment was obtained from the rare earth ore containing scandium in Yunnan Province, the sample used in experiment is leaching liquid containing scandium which the content of scandium is 3.6g/t, with complex impurity composition. The main influencing factors of extraction in hydrochloric acid solution were acidity, mixing time, phase ratio etc ...
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In this study, a roasting-hydrolysis-acid leaching process is used to extract scandium from the scandium rough concentrate. The scandium rough concentrate containing Sc2O3 of 76.98 g/t was ...
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The extraction mechanism was examined and it was revealed that Sc3+ is extracted with three HTTA and one TOPO molecules. Scandium was readily stripped from the extracting phase by 1 M sulfuric acid. The potential use of the combination of the β-diketone with TOPO for the recovery of Sc3+ in a refining process was demonstrated.
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In this study, solvent extraction of scandium with the mixed extractant of Versatic Acid 10 and TBP was investigated. Stripping experiments of Sc3+ were also carried out by using sulfuric acid. The process for separation and concentration of scandium was established through the experiments. ...
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The present study aimed at the scandium extraction from bauxite residue by H 2 SO 4 and H 3 PO 4 leaching. The use of H 2 O 2 was evaluated to avoid silica gel formation. The effect of time, temperature, and acid concentration was evaluated. Results showed that scandium extraction is directly related to iron extraction.
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The extraction mechanism was examined and it was revealed that Sc3+ is extracted with three HTTA and one TOPO molecules. Scandium was readily stripped from the extracting phase by 1 M sulfuric acid. The potential use of the combination of the β-diketone with TOPO for the recovery of Sc3+ in a refining process was ...
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In our previous study, it has been proven that the content of scandium could be enriched to about 0.04 wt% in a solid product after proper pretreatment of bauxite ore residue.The extraction of scandium from this scandium-rich material was investigated in the present study, with emphasis on both acid leaching of various components and solvent extraction of scandium from acidic leachate.
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A Soxhlet extractor is a piece of laboratory apparatus invented in 1879 by Franz von Soxhlet. It was originally designed for the extraction of a lipid from a solid material. Typically, Soxhlet extraction is used when the desired compound has a limited solubility in a solvent, and the impurity is insoluble in that solvent. It allows for unmonitored and unmanaged operation while efficiently ...
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Hunan Oriental Scandium Co. Ltd. Huizhou Top Metal Materials Co., Ltd (TOPM) Rongjiayu Technology; Get a sample copy of the Scandium Metal Market report 2021. According to this latest study, the 2021 development of Third-Party Replacement Strap for Scandium Metal …
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12%The present study aimed at the scandium extraction from bauxite residue by H 2 SO 4 and H 3 PO 4 leaching. The use of H 2 O 2 was evaluated to avoid silica gel formation. The effect of time, temperature, and acid concentration was evaluated. Results showed that scandium extraction is directly related to iron extraction.
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Microsymposium MS75.O06 A combined high-pressure diffraction and computational study on scandium MOFs 1 1 2 2 3 1 3 1 3 S. Moggach, A. Graham, A. Banu, T. Düren, A. Greenaway, S. McKellar, J. Mowat, K. Ward, P. Wright 1 EaStCHEM School of Chemistry and the Centre for Science at Extreme Conditions, The University of Edinburgh, ing's Buildings, West Mains Road, 2 Edinburgh, …
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MONTREAL, June 09, 2021 (GLOBE NEWSWIRE) -- Imperial Mining Group Ltd. ("Imperial") ( TSX VENTURE: IPG ) (OTCQB: IMPNF) is pleased to announce that it has developed an innovative process for extraction of scandium (Sc) and rare earth elements (REE) from its Crater Lake scandium mineralization as part of its current Phase 3 Hydrometallurgical Development Program.
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Based on leaching experiments of complex silicate ore contenting scandium, the research has adopted extraction to concentrate scandium and separate impurity. The emphasis of this reaserch is the impact factors, so the experiments including extractant concentration, organic aqueous ratio, mixing time, organic phase washing, organic phase reextraction, have been conducted.
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During scandium solvent extraction study the temperature (25 °C) of the solution (s) was kept constant. 2.4. General equations. As per the reported investigations the Sc(III) extraction with either of the phosphoric acid derivatives is governed by cation exchange mechanism at low acidity and solvation mechanism at high acidity,, . Thus, Sc ...
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Scandium is distributed homogeneously throughout the ore mineral assemblage. The process flowsheet recovers separate niobium, titanium and scandium products. Scandium is extracted from whole ore hydrochloric acid leach solutions through solvent extraction, and is further refined through a re-leach and precipitation process.
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Finally, the optimal extraction conditions are proposed. The petroleum ether is used as solvent, the solvent ratio is 15:1 (volume of solvent is 15ml, quality of leaves is 1g), the extraction temperature is 50°C and the time is 4h. The purity of solanesol reaches …
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The Nyngan scandium resource is located in NSW, Australia approximately 500 kilometers northwest of Sydney. Minerals exploration at the site has defined a measured and indicated resource significantly larger (7X) than the currently planned 20 year mine life outlined in the feasibility study.
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The Company has invested in and developed methodology for extracting scandium from the Nyngan property resource since 2010. A portion of the work done over this period has been superseded by work that followed, but subsequent test programs universally benefitted from prior efforts. ... Nyngan Scandium Project - Feasibility Study Financial ...
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Study of the extraction of scandium, thorium, and zirconium by the tetraethyldiamide of heptylphosphoric acid from nitric acid solutions. A. S. Litvincheva 1, V. I. Fadeeva 1 & I. P. Alimarin 1 Bulletin of the Academy of Sciences of the USSR, Division of chemical science volume 22, pages 273–276 (1973)Cite this article
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