Deactivation of the scandium concentrate recovered from uranium leach liquors / Rychkov Vladimir N.,Semenishchev Vladimir S.,Mashkovtsev Maxim A.,Kirillov Evgeny V.,Kirillov Sergey V.,Bunkov Grigory M.,Botalov Maxim S. // JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. - 2016. - V. 310, l. 3. - P. 1247-1253.

ISSN/EISSN:

0236-5731 / 1588-2780

Type:

Article

Abstract:

The article deals with deactivation of a scandium concentrate recovered as a by-product from uranium leach liquors. It was shown that gross activity of the primary scandium concentrate was (1.8 +/- A 0.25) x 10(8) Bq kg(-1). Alpha and beta activity of the concentrate was conditioned mainly by Th-230 and the radioactive chain Th-234-Pa-234m-Pa-234 respectively; significantly lower activity of Th-227 was also found. Extraction system containing 5 wt\% of di(2-ethylhexyl)orthophosphoric acid and 10 wt\% of tributyl phosphate in Shelsol D70 diluent was suggested for scandium deactivation. It was shown that five stages of extraction using the suggested extraction system provided decontamination factor as high as 7 x 10(4).

Author keywords:

Scandium recovery; Uranium leach liquors; Deactivation; Sc/Th separation; Solvent extraction SOLVENT-EXTRACTION; ACID-SOLUTIONS; SEPARATION

DOI:

10.1007/s10967-016-4990-3

Web of Science ID:

ISI:000388629900035

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
EISSN	1588-2780
Keywords-Plus	SOLVENT-EXTRACTION; ACID-SOLUTIONS; SEPARATION
Research-Areas	Chemistry; Nuclear Science \& Technology
Web-of-Science-Categories	Chemistry, Analytical; Chemistry, Inorganic \& Nuclear; Nuclear Science \& Technology
Author-Email	vovius82@mail.ru
ResearcherID-Numbers	Kirillov, Sergey/I-7018-2013
ORCID-Numbers	Kirillov, Sergey/0000-0001-9949-9881
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}14.581.21.0002, RFMEFI58114X0002]
Funding-Text	The study was financially supported by the Ministry of Education and Science of the Russian Federation within the framework of subsidizing agreement of September 29, 2014 (No. 14.581.21.0002, unique agreement identifier RFMEFI58114X0002) of the Federal Target Program ``Research and Development in Priority Directions of the Progress of the Scientific and Technological Complex of Russia for the Years 2014-2020.{''}
Number-of-Cited-References	15
Usage-Count-Since-2013	8
Journal-ISO	J. Radioanal. Nucl. Chem.
Doc-Delivery-Number	ED1UH