SEPARATE DESORPTION OF SCANDIUM AND IMPURITIES

Abstract

With the purpose of the separation of scandium from impurities and REM experiments were carried out by fractional desorption. At the first stage, a solution of sulfuric acid with a concentration of 75 g/dm3 was used as a desorbing solution to separate harmful impurities such as Fe, Al, and Th. At the second stage, scandium was desorbed with a solution of sodium carbonate with a concentration of 200 g/dm3. At the third stage, ammonium sulfate solution with a concentration of 300 g/dm3 was used for desorption of REM. When carbonate desorption is a complete transition of scandium into solution. The processing solution of ammonium sulfate with a concentration of 350 g/dm3, conducted with the purpose of removal of REE from phosphorus-containing ТР260 and ВМСС ion exchangers after the implementation of carbonate desorption, proved ineffective.

References

[1] Hedrick J.B. (2010) Mineral commodity summaries 2008: scandium. US Geol Surv 3:124-125.

[2] Lipilin A.S. (2007) In: Lin Paul B (ed) Ceramic materials research trends. NewYork: Nova Publisher. P. 139-158.

[3] Shokobaev N.M. Development of technologies for the complex processing of ores of exogenous uranium deposits with the associated extraction of rhenium, scandium and rare-earth metals: PhD ... PhD: 6D070900. Almaty, 2015. 111 p.

[4] Pat. 2484162 RF. The method of extraction of rare earth metals from technological and productive solutions and pulps / V.N. Rychkov, E.V. Kirillov, A.L. Smirnov, N.A. Poponin; publ. 06/10/2013. Bulletin. No. 16.

[5] Kanggen Zhou, Chunying Teng, Xuekai Zhang, Changhong Peng, Wei Chen. Enhanced selective leaching of scandium from red mud // Hydrometallurgy. 2018. P. 57-63.

[6] Bunkov G.M. Development of a technology for extracting scandium from solutions of underground leaching of uranium: a dissertation for the degree of candidate of technical sciences: 05.17.02. Yekaterinburg, 2019.

[7] Pirozhenko K.Yu. Sorption extraction of scandium from return solutions of borehole underground leaching of uranium: dissertation for the degree of candidate of technical sciences: 05.16.02. M., 2016.

[8] Tatarnikov A.V., Mikhailenko M.A., article “Selection of sorbents for the extraction of scandium and rare-earth elements from solutions of complex composition” // Collection of materials of the international scientific and technical conference “Actual problems of obtaining and using REM and RM - 2017”. M.: OJSC "Institute" GINCVETMET".

[9] Komissarova L.N. Inorganic and analytical chemistry of scandium. M.: Editorial URSS, 2001. 512 p.

[10] Leynin D.A. Synthesis and properties of phosphorus-containing sorbents / D.A. Leynin, V.S. Rataichak // Results of science, series Chemistry. Chemistry and technology of macromolecular compounds. 1971. Vol. 3. P. 66-137.

[11] Kopylova V.D. Investigation of sorption of 3d metal ions by phosphorus-containing ion exchangers / V.D. Kopylova, A.I. Waldman, E.T. Boyko et al. // Journal of Physical Chemistry. 1984. Vol. 58, No. 1. P. 167-171.

[12] ГОСТ 10896-12 Ionites. Test Preparation. M.: IPK Standards Publishing House, 1999. 7 p.

[13] Kopbaeva M.P., Berezovsky A.V., Kumarbekova A.T., Esimkanova U.M., Torebekov A.K. The increase in the acidity of weakly acid cation exchanger according to scandium due to an increase in the acidity of the initial solution // Collection of reports of the International Innovation School “Prospects and Technologies for Diversifying the Activities of NAC Kazatomprom JSC, 2018. P. 187-190.

 [14] Petrov N.N., Yazikov V.G., Aubakirov X.B., Plekhanov V.N., Vershkov A.F., Lukh- tin V.F. Uranium deposits of Kazakhstan (exogenous). Almaty: Gylym, 1995.

[15] Belikova G.I. Article “On the geochemistry of scandium and its complete structural analogues” Institute of Geology, Ufa Scientific Center, Russian Academy of Sciences. Section IV. Geological digest. 2014. No. 1. P. 153-157.