Recovery of scandium from leaching solutions of tungsten residue using solvent extraction with Cyanex 572

Nie, Heng–Yong; Wang, Yabing; Wang, Yanliang; Zhao, Zeyuan; Dong, Yamin; Sun, Xiaoqi

doi:10.1016/j.hydromet.2017.10.026

Cited by 49 publications

(15 citation statements)

References 19 publications

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“…Separation and purification of scandium is carried out using acidic, alkaline, neutral and chelating extractants. A promising area of extraction chemistry is the use of binary extractants, characterized by high separation and distribution coefficients, a high extraction rate, as well as ease of re-extraction and reagent consumption reduction.Among extractants, the most selective with respect to scandium is di-2ethylhexylphosphoric acid (DEHPA) [14][15][16][17][18][19][20][21][22]. ISSN 2224-5286 6.…”

Section: Investigationof Concentration Methods Of Scandium-containing mentioning

confidence: 99%

Investigationof Concentration Method of Scandium-Containing Solutions

Shokobayev¹,

Adelbayev²,

Abilmagzhanov³

et al. 2019

OF THE ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTAN

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Section: Investigationof Concentration Methods Of Scandium-containing mentioning

confidence: 99%

Investigationof Concentration Method of Scandium-Containing Solutions

Shokobayev¹,

Adelbayev²,

Abilmagzhanov³

et al. 2019

OF THE ACADEMY OF SCIENCES OF THE REPUBLIC OF KAZAKHSTAN

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“…A mixture containing scandium oxide in combination with an Al-CoCrFeNi alloy was investigated, which led to the discovery of a promising nanodiamond composite [4]. Due to its low content in mineral ores, scandium is usually isolated from various sources, such as uranium production solutions [5], as a by-product from tailings processing, titanium pigment produc-tion waste [6], ilmenite chlorination waste, tungsten processing residues [7] and red mud [8,9].…”

Section: Introductionmentioning

confidence: 99%

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

Yessimkanova

Матаев

Алехина

et al. 2020

Eurasian Chem. Tech. J.

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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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“…However, the terbium and yttrium separation from other REEs from end‐of‐life fluorescent lamps only was achieved using D2EHPA . Nie et al postulate Cy572 as the best extractant, instead of P507 (2‐ethylhexylphosponic acid mono‐2‐ethylhexyl ester), TBP (tributyl‐phosphate), or Cyanex 923 (a mixture of four trialkylphosphine oxides), to recover Sc in chloride media from leaching solutions of a tungsten residue by SX . A mixture of HEHAPP (2‐ethylhexyl‐3‐(2‐ethylhexylamino)pentan‐3‐yl‐phosphonic acid) and D2EHPA could be an efficient synergic extraction system for the heavy REEs separation according to Kuang et al…”

Section: Introductionmentioning

confidence: 99%

Solvent extraction modeling of Ce/Eu/Y from chloride media using D2EHPA

et al. 2019

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End‐of‐life fluorescent lamps are becoming essential in the rare earths (REEs) field and suppose a feasible secondary source for getting them, reducing thus their supply risk. Considering the proved viability of the cationic extractants, the present study aims at establishing a solvent extraction model using di‐(2‐ethylhexyl)phosphoric acid (D2EHPA) not only based on the individual Ce, Eu, and Y behavior in chloride media, but also bearing in mind the competitive extraction of these metals in Ce/Eu/Y mixtures, depending on the media variables. Furthermore, the model allow determining the optimal REEs separation conditions. The results disclose that Y could be separated from the mixture using 0.1 mol/L D2EHPA, acidity above of 3 mol/L of protons and chloride concentrations higher than 4 mol/L.

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Recovery of scandium from leaching solutions of tungsten residue using solvent extraction with Cyanex 572

Cited by 49 publications

References 19 publications

Investigationof Concentration Method of Scandium-Containing Solutions

Investigationof Concentration Method of Scandium-Containing Solutions

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

Solvent extraction modeling of Ce/Eu/Y from chloride media using D2EHPA

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