Solubility of vanadium from manganese vanadates in aqueous solutions of soda ash
- Autores: Khalezov B.1, Krasheninin A.1, Vatolin N.1, Ovchinnikova L.1
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Afiliações:
- Institute of Metallurgy, Ural Branch
- Edição: Volume 2016, Nº 5 (2016)
- Páginas: 409-412
- Seção: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170519
- DOI: https://doi.org/10.1134/S0036029516050098
- ID: 170519
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Resumo
It is shown that, in the course of developing the technology of pure vanadium pentoxide preparation from manganic vanadium-containing metallurgical slags, their oxidative roasting and cinder formation without alkaline additives are accompanied by the decomposition of spinelides with the formation of manganese meta- and pyrovanadates. Concentrated aqueous solutions of soda ash with an Na2CO3 concentration of 120–150 g/dm3 are accepted as a selective leaching reagent for vanadium from a cinder. Manganese metaand pyrovanadates are synthesized, and the procedure of their preparation is presented. The solubility of vanadium from manganese vanadates in aqueous solutions of soda ash at \(C_{Na_2 CO_3 } = 150 g/dm^3 \) is studied at 20–95°C for pyrovanadate and at 85–95°C for metavanadate. It is shown that vanadium should be leached from converter manganic slags roasted without alkaline metal additives at a leaching solution temperature higher than 95°C. There is a possibility to increase the vanadium content in a leaching solution to 60–80 g/dm3. The results obtained are used in the development of the technology of vanadium leaching.
Sobre autores
B. Khalezov
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Rússia, ul. Amundsena 101, Yekaterinburg, 620016
A. Krasheninin
Institute of Metallurgy, Ural Branch
Autor responsável pela correspondência
Email: agkrash@mail.ru
Rússia, ul. Amundsena 101, Yekaterinburg, 620016
N. Vatolin
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Rússia, ul. Amundsena 101, Yekaterinburg, 620016
L. Ovchinnikova
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Rússia, ul. Amundsena 101, Yekaterinburg, 620016