Recovery of Scandium by Crystallization Techniques
Edward Michael Peters, Şerif Kaya, Carsten Dittrich & Kerstin Forsberg. 4122 Accesses. 24 Citations. Explore all metrics. Abstract. Bauxite residues, i.e., red …
Recovery of scandium from white waste acid generated …
Scandium recovery and purification were performed in detail by solvent extraction with TRPO from both the scandium sulfate solution and sulfuric acid leaching solution of Sc concentrate. The scandium concentrate was generated from titanium white waste acid by extraction in a factory. The effects of the acidity, salting-out agent, …
Nyngan Scandium Project | Scandium …
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 …
Assessing the Efficiency of Ion Exchange Resins for the …
This research investigates the recovery of scandium from an acid pregnant leaching solution using ion exchange resins. The pregnant leaching solution was …
Concentration and Separation of Scandium from Ni …
The current world supply is small at 15-20 tonnes per year and is largely serviced by scandium by-product recovery from production of other metals. In recent years, an increase in demand for ...
Recovery of scandium from various sources: a critical review …
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. …
A Novel Binary-Extractant-Impregnated Resin for Selective Recovery …
This bin ary-extractant-impregnated. concept could provide a new way to develop nove l ion-exchange resins for metal separation. Introduction. Recently, scandium has received much attention ...
Development of Scandium-Recovery Process from Titanium …
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 ...
Improved Technology of Scandium Recovery from …
Scandium concentrates obtained with the use of sorption concentration of scandium from solutions of red mud carbonation leaching are characterized by high content of scandium oxide (25–60%) and can be processed into scandium oxide of 99.0 and 99.9% purity by classical precipitation techniques (Fig. 8).
Metallurgical processes for scandium recovery from various …
This paper comprehensively reviews the metallurgical processes to recover scandium from various sources. Residues, tailings and waste liquors in the production …
From trace to pure: Recovery of scandium from the waste …
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% ...
Recovery of scandium from bauxite residue—red mud: a …
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 …
Recovery of scandium from KOH sub-molten salt leaching cake …
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.
Recovery of scandium from various sources: a critical review …
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 …
Scandium Recovery Methods from Mining, Metallurgical …
The easiest way to recover scandium is by precipitation, i.e., insoluble scandium compounds from scandium containing solutions [ 23 ]. Even in this case, the …
Scandium Recovery Methods from Mining, Metallurgical …
Scandium of high purity (99.9%) and high scandium recovery (90%) were obtained using the two SX techniques described above. Cation exchange mechanisms such as ScA 3 complex formation and HA molecule entry into the complex can both be used to extract scandium from low-acid solutions by carboxylic acids (HA) and produce adducts …
A novel synergistic extraction system for the recovery of scandium …
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 …
Recovered Scandium from Tungsten Residue with High …
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 …
Scandium recovery from ion-adsorption rare earth …
4 Conclusions. To efficiently recover Sc from ion-adsorption REEs concentrate, the extraction behavior and mechanism of HEHEHP in sulfonated kerosene as extractant towards Sc were firstly studied. An excellent extraction selectivity towards Sc over other REEs in 0.1−4 mol/L HCl solution is observed.
Recovery of Scandium by Leaching Process from Brazilian Red …
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.
Recovery of scandium from various sources: A critical review …
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) …
BR07
the challenges associated with direct acid leaching for the recovery of scandium.[5] In this process, solid bauxite residue is mixed with concentrated (98 wt%) sulfuric acid to neutralize its alkalinity, break down its mineral phases and convert the insoluble minerals to soluble sulfates. The acid±bauxite residue mixture is then baked at 200± ...
Recovery of scandium, yttrium and lanthanides from …
A discussion of factors affecting scandium extraction/recovery towards UN SDG. • A thorough review of current techniques for scandium extraction/recovery. • …
Metallurgical processes for scandium recovery from various …
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….
Recovery of scandium from silicate minerals by high …
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 …
Effect of Aqueous Media on the Recovery of …
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 ...
Efficient and Selective Recovery of Trace Scandium by …
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 …
Recovery of scandium from leachates of Greek bauxite …
In this work, we investigated the recovery of scandium from real leachates of Greek bauxite residue. In the separation of scandium from the other elements, the biggest challenge arose from the chemical similarities between scandium(III) and iron(III). This hampers high selectivity for scandium, especially because iron, as one of the major ...
Recovery of scandium from red mud by leaching with …
Recovery of scandium (Sc) from various wastes is generally one strategy to solve potential supply shortage problems of Sc. This work proposes a synergistic …
Recovery of scandium (III) from diluted aqueous …
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 …