Solubility of vanadium from manganese vanadates in aqueous solutions of soda ash
- Authors: Khalezov B.D.1, Krasheninin A.G.1, Vatolin N.A.1, Ovchinnikova L.A.1
-
Affiliations:
- Institute of Metallurgy, Ural Branch
- Issue: Vol 2016, No 5 (2016)
- Pages: 409-412
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170519
- DOI: https://doi.org/10.1134/S0036029516050098
- ID: 170519
Cite item
Abstract
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.
About the authors
B. D. Khalezov
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016
A. G. Krasheninin
Institute of Metallurgy, Ural Branch
Author for correspondence.
Email: agkrash@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016
N. A. Vatolin
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016
L. A. Ovchinnikova
Institute of Metallurgy, Ural Branch
Email: agkrash@mail.ru
Russian Federation, ul. Amundsena 101, Yekaterinburg, 620016