V. N. Lebedev, st. nauch. sotr., e-mail: lebed_vn@chemy.kolasc.net.ru; E. P. Lokshin, zav. lab. khimii i tekhnologii redkozemel'nogo syr'ya, Institut khimii i tekhnologii redkikh elementov i mineral'nogo syr'ya im. I. V. Tananaeva, KNTs RAN, g. Apatity.

Extraction of baddeleite concentrate from dump tailings after magnetic separation of II finishing stage is examined. Baddeleite concentrate (94.8%) has been extracted via leaching of wastes by diluted acids with consequent sulphatization and magnetic separation. The conditions of cleaning the wastes with removal of radionuclides via sulphatization are determined.

1. Lyakhov V. P., Kampel' F. B., Bogdanovich V. V. // Gornyy zhurnal. 1997. № 12. S. 8–11.
2. Lebedev V. N., Lokshin E. P. // Obogashchenie rud. 2006. № 6. S. 12–16.
3. Lebedev V. N., Lokshin E. P., Barmin I. S. // Tam zhe. 2007. S. № 5. S. 19–22.
4. Lokshin E. P., Lebedev V. N., Lyakhov V. P. i dr. // Ogneupory i keramika. 2002. № 11. S. 34–40.
5. Pat. 2139250 RF, MKIMKI6 C 01 G 25/02. Sposob ochistki baddeleitovogo kontsentrata / Lokshin E. P., Lebedev V. N., Bogdanovich V. V. i dr. ; zayavitel' i patentoobladatel' IKhTREMS im. Tamanaeva Kol'skogo nauchnogo tsentra RAN. — № 98112191/912 ; zayavl. 24.06.1998 ; opubl. 10.10.99, Byul. № 28.
6. Pozin M. E. Tekhnologiya mineral'nykh soley. — L. : Khimiya, 1970. T. 1. — 791 s.
7. Tyushkova N. I., Kolenkova M. A., Shumenko V. N., Chanturiya A. V. // Izv. vuzov. Tsvetnaya metallurgiya. 1984. № 5. S. 34–37.
8. Ayler R. Khimiya kremnezema. — M. : Mir, 1982. T. 1. — 1127 s.
9. Anufrieva S. I., Petrova N. V., Mikhaylova N. S. i dr. // Strategiya ispol'zovaniya i razvitiya mineral'no-syr'evoy bazy Rossii v 21 v. / Mineral'noe syr'e. 2000. № 7. T. 2 S. 75–82.