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Academic literature on the topic 'Scandium ores'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "Scandium ores"

1

Islamov, B. F., A. I. Rustamov, V. D. Tsoi, and S. S. Sayitov. "Promising scandium content of Tebinbulak titanium-magnetite deposit." Vestnik of Geosciences 3 (2021): 21–26. http://dx.doi.org/10.19110/geov.2021.3.3.

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We present results of geological-mineralogical-geochemical studies of the Tebinbulak scandium-containing titanium-magnetite deposit in Western Uzbekistan. The levels of scandium content in ores and rocks of the pyroxene-hornblende massif have been analyzed. The potential for the associated extraction of scandium from ores, which can significantly increase the profitability of the industrial development of the deposit, is discussed.
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Kompanchenko, Alena, Anatoly Voloshin, and Victor Balagansky. "Vanadium Mineralization in the Kola Region, Fennoscandian Shield." Minerals 8, no. 11 (2018): 474. http://dx.doi.org/10.3390/min8110474.

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In the northern Fennoscandian Shield, vanadium mineralization occurs in the Paleoproterozoic Pechenga–Imandra-Varzuga (PIV) riftogenic structure. It is localized in sulfide ores hosted by sheared basic and ultrabasic metavolcanics in the Pyrrhotite Ravine and Bragino areas and was formed at the latest stages of the Lapland–Kola orogeny 1.90–1.86 Ga ago. An additional formation of vanadium minerals was derived from contact metamorphism and metasomatism produced by the Devonian Khibiny alkaline massif in the Pyrrhotite Ravine area. Vanadium forms its own rare minerals (karelianite, coulsonite, kyzylkumite, goldmanite, mukhinite, etc.), as well as occurring as an isomorphic admixture in rutile, ilmenite, crichtonite group, micas, chlorites, and other minerals. Vanadium is inferred to have originated from two sources: (1) basic and ultrabasic volcanics initially enriched in vanadium; and (2) metasomatizing fluids that circulated along shear zones. The crystallization of vanadium and vanadium-bearing minerals was accompanied by chromium and scandium mineralization. Vanadium mineralization in Paleoproterozoic formations throughout the world is briefly considered. The simultaneous development of vanadium, chromium and scandium mineralizations is a unique feature of the Kola sulfide ores. In other regions, sulfide ores contain only two of these three mineralizations produced by one ore-forming process.
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3

Chassé, Mathieu, Marc Blanchard, Delphine Cabaret, Amélie Juhin, Delphine Vantelon, and Georges Calas. "First-principles modeling of X-ray absorption spectra enlightens the processes of scandium sequestration by iron oxides." American Mineralogist 105, no. 7 (2020): 1099–103. http://dx.doi.org/10.2138/am-2020-7308.

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Abstract Scandium is often associated with iron oxides in the environment. Despite the use of scandium as a geochemical tracer and the existence of world-class supergene deposits, uncertainties on speciation obscure the processes governing its sequestration and concentration. Here, we use first-principles approaches to interpret experimental K-edge X-ray absorption near-edge structure spectra of scandium either incorporated in or adsorbed on goethite and hematite, at concentrations relevant for the environment. This modeling helps to interpret the characteristic spectral features, providing key information to determine scandium speciation when associated with iron oxides. We show that scandium is substituted into iron oxides at low concentrations without modifying the crystal structure. When scandium is adsorbed onto iron oxide surfaces, the process occurs through outer-sphere complexation with a reduction in the coordination number of the hydration shell. Considering available X-ray absorption spectra from laterites, the present results confirm that scandium adsorption onto iron oxides is the dominant mechanism of sequestration in these geochemical conditions. This speciation explains efficient scandium recovery through mild metal-lurgical treatments of supergene lateritic ores. The specificities of scandium sorption mechanisms are related to the preservation of adsorbed scandium in million-years old laterites. These results demonstrate the emerging ability to precisely model fine X-ray absorption spectral features of trace metals associated with mineral phases relevant to the environment. It opens new perspectives to accurately determine trace metals speciation from high-resolution spatially resolved X-ray absorption near-edge structure spectroscopy in order to constrain the molecular mechanisms controlling their dynamics.
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4

Aung, Wai Moe, M. V. Marchenko, and I. D. Troshkina. "Scandium adsorption from sulfuric-chloride solutions with activated carbons." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 5 (October 25, 2019): 49–55. http://dx.doi.org/10.17073/0021-3438-2019-5-49-55.

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The study covers scandium adsorption in batch conditions by VSK, DAS and PFT activated carbon grades (Russia) of different origin (сoconut shell, аnthracite, thermoset waste, respectively) from sulfuric acid-chloride solutions (pH = 2) simulating the composition of the underground leaching solutions of polymetallic ores. It was found that scandium adsorption by DAS and VSK carbons proceeds with the highest distribution coefficients (133 and 45.8 cm3/g, respectively). Isotherms of scandium adsorption with these carbons are linear and described by the Henry equation with constants 133 ± 21 and 46 ± 7 cm3/g, respectively. A limited solution volume method was used to obtain the integral kinetic curves of scandium adsorption. Their linearization according to the kinetic models of the pseudo-first, pseudo-second order, the Elovich model and the Weber–Morris intra-particle diffusion model indicates that the kinetics of scandium adsorption with VSK carbon having a higher correlation coefficient (0.999) is described using the pseudo-second order model. Description of the kinetic data obtained during the adsorption of scandium with DAS carbon showed that for all the models used the correlation coefficient is low (<0.939), while the highest value is observed when using the intra-particle diffusion model. It was suggested that the scandium adsorption process occurs in the mixed diffusion region. The possibility of scandium elution from VSK and DAS carbons with sodium carbonate solution (10 %) was studied in batch conditions, where the degree of scandium desorption in two stages of elution was 84.0 and 90.4 %, respectively.
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5

Pikalova, V. S., L. P. Tigunov, and L. Z. Bykhovskii. "Alloying metals of Russia. Mineral raw materials resources: state, utilization, perspective of development (Report 2)." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 75, no. 6 (2019): 675–82. http://dx.doi.org/10.32339/0135-5910-2019-6-675-682.

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A group of metals, including tantalum, rare earth metals, beryllium, titanium, zirconium, rhenium, scandium and boron has a big importance for alloying steel, aluminum and other non-ferrous metals as well as for production of different alloys. In Russia, the explored resources of tantalum by many times exceed the plants’ demands. Zashikhinskoe and Vishnyakovskoe deposits in Irkutskregion, as well as Katuginskoe in Chitaregion are most promising. The State balance accounts the resources of rare earth metals (REM) oxides by 20 deposits. Russiatakes the second place in the world after Chinaby REM resources. The balance resources of beryllium are accounted in 35 deposits, exceeding the world proved resources in the summarized categories A + B + C1+ C2. Russia takes the third place in the world after China and Australia by zirconium resources. The state balance accounts 36 deposits of titanium and 21 deposit of zirconium. Rhenium is the least provided by deposits and most demanded metal. The state balance of RF accounts resources of rhenium in seven deposits: three of them being copper-molybdenum deposits, two – copperporphyritic deposits, one – tungsten-molybdenum deposit and one – purely rhenium deposit. Resources of scandium as an associated component are accounted in eight deposits of Russia, half of the being within the allocated fund of bowels. However, man-caused formations – red sludge – wastes of alumina production – are most real source of scandium. Big resources of scandium are associated with the wastes of iron ore production at Kachkanar mining and concentration plant, which ate not accounted by the State balance. Resources of three deposits of boron ores are accounted in Russia, two of the being within the allocated fund of bowels – the Dal’negorskoe (Primorsky region) which utilized, and Taezhnoe (Sakha Republic – Yakutiya), which is being prepared for utilization. A wide distribution of boron minerals ascertained in magnetite ores, developed in Korshunovskoe (Irkutsk region) and Kazskoe (Kemerovo region) deposits.
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6

Kravchenko, S. M., A. Yu Belyakov, A. I. Kubyshev, and A. V. Tolstov. "SCANDIUM-RARE EARTH-YTTRIUM-NIOBIUM ORES—A NEW ECONOMIC RESOURCE." International Geology Review 32, no. 3 (1990): 280–84. http://dx.doi.org/10.1080/00206819009465776.

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7

Jankovský, Ondřej, David Sedmidubský, Petr Šimek, et al. "Separation of thorium ions from wolframite and scandium concentrates using graphene oxide." Physical Chemistry Chemical Physics 17, no. 38 (2015): 25272–77. http://dx.doi.org/10.1039/c5cp04384k.

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8

Yessimkanova, U., M. Mataev, M. Alekhina, M. Kopbaeva, A. Berezovskiy, and Dr D. Dreisinger. "The study of the Kinetic Characteristics of Sorption of Scandium of Ion Exchanger Purolite MTS9580 from Return Circulating Solutions of Underground Leaching of Uranium Ores." Eurasian Chemico-Technological Journal 22, no. 2 (2020): 135. http://dx.doi.org/10.18321/ectj961.

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This paper presents the results of a study of experiments on the sorption characteristics of phosphorus-containing ion exchangers Purolite MTS9580 (functional group ‒ derivatives of phosphonic acid) and Lewatit TP260 (functional group ‒ aminomethylphosphonic acid) on scandium. Using the method of low-temperature nitrogen adsorption, structural characteristics of selected ion exchangers Purolite MTS9580 and Lewatit TP260 respectively were measured. The specific surface of Purolite MTS9580 and Lewatit TP260 ion exchangers was measured as 5.1 and 4.5 m2/g, respectively. The obtained values indicate the presence of a macroporous structure in the ion exchangers. Experiments were carried out on the sorption of scandium and critical impurities in a static mode and dynamic mode while varying the acidity of the initial mother liquor of the sorption of uranium. Comparison of scandium sorption from pre-acidified uranium sorption mother liquor with Lewatit TP260 and Purolite MTS9580 ion exchangers showed an advantage for MTS9580 resin. The MTS9580 resin had an exchange capacity of 200 mg Sc/dm3 versus 59.7 mg Sc/dm3 for TP260. The dynamic exchange capacity of Purolite MTS9580 is much lower in relation to harmful impurities as Al, Fe, Ca, etc.
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9

Molchanova, T. V., I. D. Akimova, and A. V. Tatarnikov. "Ion-Exchange Methods of Scandium Recovery from the Ores of the Tomtor Deposit." Russian Metallurgy (Metally) 2019, no. 7 (2019): 674–79. http://dx.doi.org/10.1134/s0036029519070103.

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10

Ferizoğlu, Ece, Şerif Kaya, and Yavuz A. Topkaya. "Solvent extraction of scandium from lateritic nickel- cobalt ores using different organic reagents." E3S Web of Conferences 8 (2016): 01043. http://dx.doi.org/10.1051/e3sconf/20160801043.

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