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Metallurgist

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04-04-2021

Influence of Preliminary Heat Treatment of Vanadium Sludges on the Manufacturability of their Processing

Authors: U. А. Kologrieva, A. I. Volkov, P. E. Stulov, M. G. Mirakova

Published in: Metallurgist | Issue 11-12/2021

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Abstract

We study the procedure of oxidizing roasting of vanadium sludges of the hydrometallurgical production of vanadium pentoxide aimed at improving the recovery of vanadium. It is shown that additions of CaCO₃ (1% of sludge mass) and MgO (2% of sludge mass) prove to be especially efficient at roasting temperatures of 1000 and 900°C, respectively. The optimal conditions are established for the procedure of leaching of vanadium from the roasted sludges. As a result of two-stage leaching, the concentration of V₂O₅ solutions becomes as high as ≈20 g/liter and, hence, they can be used to obtain vanadium concentrates meeting the requirements of standard documentation by the method of hydrolysis.

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Title: Influence of Preliminary Heat Treatment of Vanadium Sludges on the Manufacturability of their Processing
Authors: U. А. Kologrieva
A. I. Volkov
P. E. Stulov
M. G. Mirakova
Publication date: 04-04-2021
Publisher: Springer US
Published in: Metallurgist / Issue 11-12/2021
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI: https://doi.org/10.1007/s11015-021-01103-2

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