I. V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of Russian Academy of Sciences Kola Scientific Center (ICTREMRM KSC RAS), Apatity, Russia

N. A. Melnik, Senior Researcher, Head of a Regional Laboratory of Radiation Control, e-mail: melnik@chemy.kolasc.net.ru

Results of researches by a radiating estimation of hydrometallurgical technologies of mineral raw material of the Kola region, developed in ICTREMRM of KSC RAS are presented. Researches have shown, that rare-metal the raw material of the Kola region is characterized by a high degree of a radioactivity which is connected to the increased contents natural radionuclides numbers of uranium-238 and thorium-232. At hydrometallurgical processing raw material radionuclides can collect in intermediate and end-products, creating radiationdangerous sites. Therefore by development of technologies of mineral raw material it is necessary to study distribution radionuclides in technological processes. As a result of long-term researches distribution of a total radioactivity and radionuclides has been studied at various versions of hydrometallurgical processing mineral raw material: apatite, perovskit, loparit, sfen, etc. Possibility of clearing of valuable metals from radionuclides and radioactivety — safety use of some technological waste and by-products of hydrometallurgical technologies is shown. Recycling of chemically aggressive radioactive waste which are formed at hydrometallurgical processing mineral raw material, is an actual problem. Key parameters and radioactive waste streams, which arise from processing radioactive raw material, are studied. It is established, that the specific radioactivity of the RW may exceed 10⁹ Bk/kg, and the total radioactivity will make 2.3.10¹² Bk/year. Recommendations concerning radiation safety are made, which are necessary to consider when designing and building radioactive waste storages on the territory of the Kola region.

1. SanPiN 2.6.1.2523–09. Normy radiatsionnoy bezopasnosti (NRB-99/2009) : Sanitarnye pravila i normativy (Sanitary Regulations and Standards 2.6.1.2523–09. Radiation standards (RS-99/2009) : Sanitary Regulations and Standards). Moscow : Federal Center of hygiene and epidemiology of Federal Service for Oversight of Consumer Protection and Welfare, 2009. 100 p.
2. Osnovnye sanitarnye pravila obespecheniya radiatsionnoy bezopasnosti (OSPORB-99/2010) (Basic sanitary rules of providing the radiation safety (BSRPRS-99/2010)). Rossiyskaya gazeta – Russian newspaper. 17 September 2010. No. 210/1 (special issue). 35 p.
3. SP 2.6.1.798–99. Obrashchenie s mineralnym syrem i materialami s povyshennym soderzhaniem prirodnykh radionuklidov (Sanitary Regulations 2.6.1.798–99. Treatment with mineral raw materials and supplies with high content of natural radionuclides). Moscow : Ministry of Health of the Russian Federation, 2000. 16 p.
4. Melnik N. A. Radiogeoekologicheskie aspekty bezopasnosti ispolzovaniya gornopromyshlennykh otkhodov Kolskogo regiona v proizvodstve stroitelnykh materialov (Radiological and geoecological aspects of safety usage of mining industrial wastes of Kola region in the production of construction materials). Apatity : Publishing House of Kola Scientific Center of Russian Academy of Sciences, 2003. 114 p.
5. Melnik N. A. Stroitelnye materialy — Construction materials. 2006. No. 4. pp. 57–60.
6. Kalinnikov V. T., Nikolaev A. I., Zakharov V. I. Gidro metallurgicheskaya kompleksnaya pererabotka netraditsionnogo titanoredkometallnogo i alyumosilikatnogo syrya (Hydrometallurgical complex processing of non-traditional titanium and rare metallic and silica-alumina raw materials). Apatity : Publishing House of Kola Scientific Center of Russian Academy of Sciences, 1999. 225 p.
7. Motov D. L. Fizikokhimiya i sulfatnaya tekhnologiya titano-redkometallnogo syrya (Physical chemistrty and sulfate technology of titanium and rare metallic raw materials). Apatity : Publishing House of Kola Scientific Center of Russian Academy of Sciences, 2002. Part. 2. 163 p.
8. Melnik N. A. Izvestiya vuzov. Tsvetnaya metallurgiya — Russian Journal of Non-Ferrous Metals. 2003. No. 3. pp. 20–26.
9. Lebedev V. N., Lokshin E. P., Melnik N. A. Zhurnal prikladnoy khimii – Russian Journal of Applied Chemistry. 2003. Vol. 76, iss. 2. pp. 190–195.
10. Melnik N. A., Lokshin E. P., Sedneva T. A. Zhurnal prikladnoy khimii — Russian Journal of Applied Chemistry. 2004. Vol. 77, iss. 8. pp. 1237–1240.
11. Nikolaev A. I., Petrov V. B., Melnik N. A., Pleshakov Yu. V., Brusnitsyn Yu. D. Izvestiya vuzov. Tsvetnaya metallurgiya – Russian Journal of Non-Ferrous Metals. 2005. No. 11. pp. 37–46.
12. Masloboeva S. M., Melnik N. A. Tekhnologiya Metallov – Technology of metals. 2007. No. 5. pp. 2–7.
13. Masloboeva S. M., Lebedev V. N., Melnik N. A., Arutyunyan L. G., Kalinnikov V. T. Tsvetnye Metally – Non-ferrous metals. 2007. No. 8. pp. 74–77.
14. Masloboeva S. M., Melnik N. A. Tsvetnye Metally – Non-ferrous metals. 2010. No. 10. pp. 71–74.
15. Mayorov V. G., Nikolaev A. I., Kopkov V. K., Safonova L. A. Radiokhimiya – Radiochemistry. 2005. Vol. 47, No. 5. pp. 596–599.
16. SP 2.6.6.1168–02 Sanitarnye pravila obrashcheniya s radioaktivnymi otkhodami (SPORO-2002) (Sanitary Regulations 2.6.6.1168-02 Sanitary regulations of treatment with nuclear wastes (SRTNW-2002)). Moscow : Ministry of Health of the Russian Federation, 2002. 62 p.
17. Zadorozhnyy V. K., Nikolaev A. I., Melnik N. A., Burenina I. V., Guseva V. M., Komleva V. A., Openkin S. A. Obogashchenie Rud – Mineral processing. 2006. No. 6. pp. 9–12.

18. SP 11-102–97. Inzhenerno-ekologicheskie izyskaniya dlya stroitelstva (Sanitary Regulations 11-102–97. Engineering and ecological investigations for construction). Moscow : Russian Federation State Committee for Construction, Architectural and Housing Policy, 1997. 37 p.