This research investigates the recovery of scandium from an acid pregnant leaching solution using ion exchange resins. The pregnant leaching solution was …

DOI: 10.1016/J.MINENG.2021.107148 Corpus ID: 239668840; Recovery of scandium from various sources: a critical review of the state of the art and future prospects @article{Junior2021RecoveryOS, title={Recovery of scandium from various sources: a critical review of the state of the art and future prospects}, author={Amilton Barbosa …

One of the main applications of scandium is its alloying into aluminum and magnesium products, to make them weldable, more corrosion resistant, and stronger (Ahmad, 2003).One of the main interests of Al-Sc alloys is in the aerospace industry because the capacity to make use of weldable structures could significantly reduce the …

Scandium represents 90–95% of the economic value of the REE present in red mud . Borra et al. studied the alumina and iron recovery by alkali roasting and smelting process, and a leaching process to recover REEs . The goal of this work was to study the recovery of scandium from Brazilian red mud (BRM) by leaching process.

The easiest way to recover scandium is by precipitation, i.e., insoluble scandium compounds from scandium containing solutions [ 23 ]. Even in this case, the …

With growing demand for renewable and clean energy technologies, the need in rare earth metals is increasing. Scandium, which is often considered a rare earth element (REE), is a critical metal mainly used in solid oxide fuel cells (SOFCs) and high strength aluminum alloys used in aerospace and 3D applications. Furthermore, scandium supply is …

Assessing the Efficiency of Ion Exchange Resins for the Recovery of Scandium from Sulfuric Acid Leaching Solutions. Scandium, a valuable element with restricted production sources mainly situated in China and Russia, is typically obtained as a by-product during the production of various materials. As the demand….

A novel Cyanex923-N1923 synergistic extraction system was proposed for recovery of Sc. • The extracted complex formed because of N-H + ⋯O P and R max was calculated to be 2.20.. 95% stripping rate of Sc can be achieved by only 2 mol·L −1 HNO 3 solution.. The problem of Sc stripping difficulty can be solved well by the synergistic …

Edward Michael Peters, Şerif Kaya, Carsten Dittrich & Kerstin Forsberg. 4122 Accesses. 24 Citations. Explore all metrics. Abstract. Bauxite residues, i.e., red …

Abstract. The adsorption of scandium from diluted, acidic solutions by a supported ionic liquid phase (SILP) was investigated, as part of a process for recovery of scandium from bauxite residue (red mud). Both dry …

Besides that, researchers also studied to recovery scandium from silicate minerals with a combination process of activated roasting-hydrometallurgy (Wang et al., 2011). NaKCO 3, NaHCO 3, CaCl 2 and NaOH have been successfully applied in pretreatment as activation reagent. Due to multiple options of harmless activation …

The scandium in the filtrate after the recovery of titanium can be finely extracted with P507, and 99.79% scandium can be extracted by single-stage extraction under the P507 concentration of 15% ...

The single-stage extraction efficiency of scandium, iron and β(Sc/Fe) were 99.1%, 9.4% and 1061.2, respectively, with CNaCl of 75 g/L and XP204 of 0.75 at solution pH value of 1.2 and stirring ...

Recovery of scandium from various sources: a critical review of the state of the art and future prospects | Semantic Scholar. DOI: 10.1016/J.MINENG.2021.107148. …

Tungsten residue is a vital scandium-containing resource. This paper presents techniques to extract scandium from high-silicon scandium-rich tungsten residue by sulfuric acid leaching. Tungsten residue is mainly composed of iron and manganese oxide (MnO, Mn3O4, Fe2O3), silicate mineral (SiO2, MgSiO3), sodium aluminosilicate …

A reagent-impregnated resin prepared from 2-ethylhexyl hydrogen 2-ethylhexylphosphonate (PC-88A) and Amber-lite XAD-7 beads was examined in order to apply it to the selective recovery of scandium.

This research presents a novel precipitation method for scandium (Sc) concentrate refining from bauxite residue leachates and the effect of aqueous media on this triple-stage successive ...

The rare earth elements (REEs) are considered to be scandium, yttrium and the elements of lanthanide group, which are included together due to their chemical similarity (Krishnamurthy and Gupta, 2016).Among those, scandium is the most valuable (Table 1).Its application in modern advanced technologies are found in light-weight …

Recovery of scandium (Sc) from various wastes is generally one strategy to solve potential supply shortage problems of Sc. This work proposes a synergistic …

1. Introduction. Scandium (Sc) is a rare earth element 1 widely used in various fields 2, 3, such as high-performance aluminum alloys, new light sources and solid fuel cells.Scandium and other rare earth are severely restricted as a critical resource in most countries, such as the United States, Europe and Brazil. 4, 5 For technologically …

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Finally, as demonstrated in Section 3.2, the use of ionic liquid for REE recovery is explored achieving up to 97% of scandium recovery Onghena and Binnemans, 2015; Sun et al., 2011;A. N. Turanov ...

Development of Scandium-Recovery Process from Titanium-Smelting Residue. Authors : Kota Nakashima, Yoshifumi Abe, Hidenori Okamoto, Akira Yoshimura, Matsuhide Horikawa, Seiichiro Tani. Published in: Extraction 2018 Publisher: Springer International ...

The recovery of scandium from a synthetic leach solution of the red mud using solvent extraction was studied. A number of extractants were investigated for the extraction of scandium and its separation from the other metals in the synthetic leach solution. It was found that amongst the three acidic organophosphorus extractants …

Bauxite residue (BR) is an inevitable industrial waste generated through the classic Bayer extraction of alumina from bauxite minerals. It contains relatively significant amount of valuable rare earth elements, including scandium, and therefore, we explored the suitability of trace scandium recovery from BR acid leachate by titanium phosphate (TiP) ion …

This study aims to the industrial scale development of Bauxite Residue leaching for Scandium recovery, by optimizing a hydrometallurgy method and taking account appropriate design concepts for process intensification. Approaching the design issue either by adapting arithmetic methods, or using related software, showed …

Red mud is a slimy caustic residue generated from alumina production. Taking into account the relatively considerable content and availability of scandium, red mud can be viewed as an important and promising scandium resource rather than a solid waste. This paper is primarily to review the investigations of scandium recovery from …

Scandium was recovered from KOH sub-molten salt leaching cake of fergusonite. •. Scandium content was about 0.94% in the cake. •. The main impurities were rare earths, uranium, thorium and iron. •. Parameters in leaching and solvent extraction were evaluated. •. A process for recovery of scandium was proposed.

The Syerston project, also in New South Wales, is under development, which contains 19,200 tonnes of scandium (300 ppm). In Queensland, the Scandium-Cobalt-Nickel (SCONI) Project was finishing its economic feasibility study, which expects to obtain 3,000 tonnes of scandium from 12 million tonnes of mineral resource (162 ppm) …

Scandium loaded on the impregnated resin column was eluted quantitatively with 4-methyl-2-pentanone as a Sc-PC-88A complex. Recovery of scandium The PC-88A complex was prepared by mixing aqueous scandium and PC-88A in heptane. The mixture was vigorously shaken, and then heptane solution was separated.