Institute of Metallurgy of Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia:

A. G. Krasheninin, Researcher, e-mail: agkrash@mail.ru
B. D. Khalezov, Leading Researcher
N. A. Vatolin, Chief Researcher

JSC “VSMPO-AVISMA Corporation”, Verkhnaya Salda, Russia:

A. S. Bornovolokov, Leading Processing Engineer

Russia is one of the leading countries in reserves of vanadium, which is included into the composition of titanomagnetite ores. Vanadium concentrate (technical vanadium pentoxide with 80–90% content of basic substance) and ferrovanadium are only produced in Russia. Metallurgical slags from titanomagnetite smelting, containing vanadium and manganese, are raw materials for these products manufacturing. Russian titanium industry covers its own requirements in pure vanadium pentoxide and manganese through import of these materials. The new technology of pure vanadium pentoxide production from manganese vanadium-containing slags was developed in the Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences. Production of vanadium pentoxide and manganese with increased purity, as well as ecological aspects and complex usage of raw materials, are considered to be the fundamental conditions for new technology development. The oxidized roasting at T = 850 ^оС without any Ca- and Na-containing additions is adopted in the technology of manganese vanadium slags processing in distinction to other existing technologies. Vanadium selective leaching in strong solutions of soda (ash) is made at the first stage of processing to obtain vanadium pentoxide of 99.6–99.8% purity. At the second stage, manganese is extracted via sulphate leaching from residues (cakes) after vanadium leaching. Manganese solution is obtained as a result of the operations of the mother liquor cleaning with removal of impurities. Manganese oxides of increased purity are precipitated from this. The obtained vanadium pentoxide and manganese oxides can be used in smelting of vanadium- and manganese-containing alloying compositions for production of titanium and aluminium alloys. The solid residues are used in ferroalloys production and in construction industry. Hence the new technology of manganese converter slags processing is claimed as ecological clean one and can provide the complex usage of raw materials. This technology can also meet the requirements of Russian titanium and aluminium industries in vanadium- and manganese-containing alloying additives.

1. Vatolin N. A., Khalezov B. D., Leontev L. I. et al. Sposob izvlecheniya vanadiya iz vanadiysoderzhashchikh materialov (Method of vanadium extraction from vanadium-containing materials). Patent RF, No. 2228965. Applied: December 30, 2002. Published: May 20, 2004.
2. Vatolin N. A., Khalezov B. D., Nezhivykh V. A., Leontev L. I. Sposob izvlecheniya vanadiya iz rastvorov (Method of vanadium extraction from solutions). Patent RF, No. 2248407. Applied: July 02, 2003. Published: March 20, 2005.
3. Vatolin N. A., Khalezov B. D., Nezhivykh V. A. et al. Sposob pererabotki vanadiysoderzhashchikh shlakov (Method of processing of vanadium-containing slags). Patent RF, No. 2263722. Applied: May 25, 2004. Published: November 10, 2005.
4. Vatolin N. A., Khalezov B. D., Leontev L. I. et al. Sposob izvlecheniya vanadiya iz vanadiysoderzhashchikh materialov (Method of vanadium extraction from vanadium-containing materials). Patent RF, No. 2310003. Applied: December 29, 2005. Published: November 10, 2007.
5. Vatolin N. A., Khalezov B. D., Krasheninin A. G., Bornovolokov A. S. et al. Sposob izvlecheniya vanadiya (Method of vanadium extraction). Patent RF, No. 2348716. Applied: May 22, 2007. Published: March 10, 2009.
6. Vatolin N. A., Khalezov B. D., Krasheninin A. G. et al. Problemy chernoy metallurgii i materialovedeniya — Problems of Ferrous Metallurgy and Materials Science. 2008. No. 4. pp. 72–75.
7. Krasheninin A. G., Vatolin N. A., Khalezov B. D. Novaya tekhnologiya polucheniya chistogo pentoksida vanadiya iz konvertornykh margantsovistykh shlakov (New technology of obtaining of pure vanadium pentoxide from converter manganous slags). Trudy I Mezhdunarodnogo simpoziuma “Fundamentalnye i prikladnye nauki”. Tom 2 (Proceedings of the I International symposium “Fundamental and applied sciences”. Volume 2). Moscow, 2010. pp. 110–122.
8. Vatolin N. A., Khalezov B. D., Krasheninin A. G., Petrova S. A., Zakharov R. G. Razrabotka i usovershenstvovanie tekhnologii izvlecheniya vanadiya iz konvertornykh margantsovistykh vanadiysoderzhashchikh shlakov (Development and improvement of technology of vanadium extraction from converter manganous vanadium-containing slags). Materialy XVI Mezhdunarodnoy konferentsii “Nauchnye osnovy i praktika pererabotki rud i tekhnogennogo syrya” (Materials of the XVI International conference “Scientific basis and practice of processing of ores and anthropogenic raw materials”). Ekaterinburg, April 6–7, 2011. pp. 343–344.
9. Bykhovskiy L. Z. Stal — Steel in Translation. 2007. No. 1. pp. 42–45.
10. Vatolin N. A., Khalezov B. D., Krasheninin A. G., Bornovolokov A. S. Kompleksnaya ekologicheski chistaya tekhnologiya pererabotki margantsovistykh vanadievykh shlakov s polucheniem pentoksida vanadiya povyshennoy chistoty (Complex ecologically pure technology of processing of manganous vanadium slags with obtaining of higher-purity vanadium pentoxide). Doklady XI Vserossiyskoy nauchno-tekhnicheskoy konferentsii (Reports of XI All-Russian scientific-technical conference). Tula : Publishing House “Innovatsionnye tekhnologii”, 2012. pp. 8–12.
11. Polozhitelnoe reshenie na zayavku 2011152610/02(078986) (Positive reaction on the application No. 2011152610/02(078986)). Applied: November 08, 2012.