Application of binary exractants of scandium
Abstract
For extraction of scandium multicomponent solutions obtained binary extractants (BE), based on organic acids (di-2-ethylhexyl-phosphoric acid (D2EHPA), di-2-etylgexyl-ditiophosphoric acid) and organic bases (threealkylbenzilammonium chloride(TABAСH), threeoktylamin). The effect of extractant composition, concentration and nature of mineral acids, the contact time the organic and aqueous phases, the metal concentration in the aqueous phase by extraction of scandium extractants binary were researched. It was established that the composition of the extractant D2EHPA-TABACH quantitatively extracts scandium into the organic phase. Concentration extraction constant Kex = 0.88. This BE allows to separatescandium from the metal impurities Al, Fe, Ca, Na, K, Mg, Cu, V, Cr, Mn, Co, Ni.References
1. Zelikman A.N., Korshunov B.G. Metallurgy of rare metals [Metallurgija redkih metallov]. Moscow, Metallurgy, 1991, 373 p.
2. Kholkin A.I., Kuzmin V.I. Binary extraction [Binarnaja jekstrakcija. Journal of Inorganic chemistry]. Moscow, 1982, V.27, № 8, P. 2070-2074.
3. Kholkin A.I., Belova V.V., Pashkov G.L. and other. Use of binary reagents [Primenenie binarnyh reagentov. Chemical Technology]. Moscow, 2000, № 12, P. 3-11.
4. Komissarov L.N. Inorganic and analytical chemistry of scandium. [Neorganicheskaja i analiticheskaja himija skandija]. Moscow, Editorial URSS, 2001, 256 p.
5. Lazarev A.I., Kharlamov I.P., YakovlevP.Y., Yakovleva E.F. Chemist's Handbook – analyst [Spravochnik himika-analitika]. Moscow, Metallurgy, 1976. 183 p.
6. Malyutkina T.M., Konkova O.V. Analytical control in non-ferrous and rare metals. [Analiticheskij kontrol' v metallurgiicvetnyh i redkih metallov]. Moscow, Metallurgy, 1988, 240 p.
7. Belova V.V., Voshkin A.A., Egorov N.S., Kholkin A.I. Extraction of rare earth metals from nitrate solutions binary extractant based CYANEX 272 [Jekstrakcija redkozemel'nyh metallov iz nitratnyh rastvorov binarnym jekstragentom na osnove CYANEX 272. Journal of Inorganic chemistry]. Moscow, 2010, V.55, № 4, P. 679-683.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-NC-ND 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.