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For example, coupled P204-TBP extractants showed significant extraction ability toward Sc even at high aqueous phase/oil (A/O) volumetric ratios regardless of their co-extraction for Ti (Zhou et al., 2020). ... Recovery of scandium from titanium white waste acid is an essential source of scandium. Simple and economical production of high …
From nickel laterite waste, scandium content is lower and its extraction may have the same problems as bauxite residues, and nickel and cobalt may be recovery with scandium. Considering coal ashes, the concentration is even lower and both technical …
A scandium production with 96% purity and 95% recovery was achieved using 6–8 stages of SX, 7–9 stages of scrubbing, and 1–2 stages of recovery. …
The magnetic oil-based gel microspheres are very close to small oil droplets and are superparamagnetic. The magnetic oil-based gel microspheres containing D2EHPA could completely extract 60 ppm of scandium ions(Sc 3+) under the conditions of O:A = 1:50,1:60,1:70, and the extraction equilibrium times were 6, 9 and 12 min, respectively. …
Scandium (Sc), declared a critical raw material in the European Union (EU), could face further supply issues as the EU depends almost entirely on imports from China, Russia, and Ukraine. In this study, a tandem nanofiltration-solvent extraction procedure for Sc recovery from titania (TiO2) acid waste was piloted and then augmented by …
D201 resin and P507 extractant diluted with sulfonated kerosene were used to respectively separate vanadium and scandium, and impurity ions from hydrochloric acid leaching solution of red mud. 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 …
Test results show scandium leaching recovery of 95.12% and the acid leaching residue with Sc2O3 content of 8.12 g/t are obtained, while the extraction of scandium is obvious.
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 recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. Moreover, the metallurgical extractive procedures for Sc recovery were presented.
Modeling of the transport and deposition of scandium using our experimental data provide evidence that fluoride-bearing aqueous fluids can dissolve up to 2.9 ppm scandium at 250 o C, 500 bar, and ...
A macro porous silica-polymer based TRPO/SiO2-P adsorbent was prepared for recovery of scandium from sulfuric acid solution. The as-prepared TRPO/SiO2-P was characterized by SEM-EDS, TG-DSC, BET, IR.
Sc recovery is now implemented in industrial production using a combination of hydrometallurgical and pyrometallurgical techniques, such as ore pre …
The recovery rate of scandium in the whole process was 90.34%. Graphical Abstract. Download : Download high-res image (330KB) ... The magnetic oil-based gel microspheres containing D2EHPA could completely extract 60 ppm of scandium ions(Sc 3+) under the conditions of O:A = 1:50,1:60,1:70, and the extraction equilibrium times …
Priority was given to addressing the technological and economic challenges associated with the recovery of scandium from the said residues, with particular …
Recovery of scandium (Sc) from various wastes is generally one strategy to solve potential supply shortage problems of Sc. This work proposes a synergistic process for co-recovery of Sc by using the acid titanium white waste acid (TWWA) to leach the basic red mud, to which the acidity was adjusted with concentrated sulfuric acid when necessary.
Ninety-nine percent recovery from 1800 mg dm −3 scandium was achieved by two- to three-stage countercurrent extraction at the flow ratio (A/O) = 1.01. The stripping efficiency of scandium reached >98% with 7 mol dm −3 H 3 PO 4. Based on the results, a conceptual flowsheet for scandium recovery from waste solutions of laterite ore leachate ...
Titanium -smelting residue contains some scandium and several processes for its recovery have been studied [ 3 ]. No commercial process exists for scandium recovery from titanium smelter residues. The titanium -smelting -plant flowsheet is shown in Fig. 1. Titanium tetrachloride (TiCl 4) is produced by the chlorination of titanium …
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 …
The recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. ... so it was selected as the oil phase. 0.5% of H2O2 was added into the ...
The recovery of scandium from Greek BR can be an excellent approach for waste management and resource efficiency of the waste using environmentally friendly biometallurgical methods. In this work ...
The recovery rate of scandium in the whole process was 90.34%. Graphical Abstract. Download : Download high-res image (330KB) Download : Download full-size image; ... Considering the oil phase of 10% P204–5% TBP exhibited good extraction towards Sc while relatively poor extraction towards Ti and Zr, so it was chosen in the …
The recovery of scandium (Sc) from wastes and various resources using solvent extraction (SX) was discussed in detail. Moreover, the metallurgical extractive procedures for Sc recovery were presented. ... College of Oil and Gas Engineering, Basra University, Basra 61007, Iraq. 3 Nanotechnology and Advanced Material Research …
This study focused on separation and recovery of scandium from chloride solution using the new synthesized ion exchange resin. The resin containing glycol amic acid groups shows the possibility to recover scandium from chloride aqueous solutions. At pH 1, the adsorption selectivity of scandium can be obtained among the others metals. The kinetic …
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 …
Recovery of scandium (Sc) from various wastes is generally one strategy to solve potential supply shortage problems of Sc. This work proposes a synergistic …
laser crystals, and oil-well tracers (radioactive isotope 46Sc).3,5 The number of applications of scandium is increasing, resulting in a growing demand in scandium. The abundance of scandium in the earth's crust is relatively high (22 ppm),5 but deposits of minerals with high scandium concentrations are scarce and
Abstract -This study focused on separation and recovery of scandium from chloride solution using the new synthesized ion exchange resin. The resin containing glycol amic acid groups shows the possibility to recover scandium from chloride aqueous solutions. At pH 1, the adsorption selectivity of scandium can be obtained among the others metals.
Extraction of vanadium from spent oil hydrotreating catalyst by acid leaching under atmospheric pressure or by pressurized acid leaching is an innovative hydrometallurgical technology, which attracts more and more attention due to its high recovery ratio of vanadium and low environmental pollution (Cai et al., 2013; Cheraghi et …
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 ...
Sumitomo Metal Mining Co., Ltd. (SMM) has taken a decision to establish operations for recovery of scandium, a rare earth element, at its nickel plant and has concluded a long-term sales agreement of scandium oxide with a fuel cell manufacturer.
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