Zherui Zhang, Tiantian Liu, Shuming Li, Jinhui Chen, Zhibin Ma, Jie Dang, Ziwen Ying, Guixuan Wu, Shengming Xu
As a strategically important metal, vanadium (V) plays a crucial role in resource security, and its efficient extraction is therefore of great significance. Traditional sodium roasting processes suffer from gaseous pollutant emissions and high costs, while calcification roasting–acid leaching has emerged as an alternative due to its environmental friendliness and economic viability. This study focuses on VTS (mainly composed of FeV2O4 and Fe2SiO4), systematically optimizing the calcification roasting–hydrochloric acid leaching process and investigating its reaction mechanism. By comparing the Gibbs free energy changes of reaction products and the acid leaching process with different additives using DFT calculations, calcium oxide was selected as the optimal calcifying agent. Experimental results show that CaO significantly promotes the transformation of FeV2O4 into soluble calcium vanadate and preferentially reacts with SiO2 to inhibit vanadate encapsulation, creating a structural basis for the selective dissol. Publication: Metals, 2026. Document type: Peer-reviewed journal paper. DOI: 10.3390/met16050472 Source: https://www.mdpi.com/2075-4701/16/5/472 Licence: Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). Publisher-hosted open-access PDF, reproduced without modification. Primary subject: Roasting Processes.
@article{487f38bd-eb78-4d0c-87c0-bf9d110f5477,
title={Efficient Recovery of Vanadium from Vanadium–Titanium Slag (VTS) via Calcification Roasting and Acid Leaching: Process and Mechanism},
author={Zherui Zhang and Tiantian Liu and Shuming Li and Jinhui Chen and Zhibin Ma and Jie Dang and Ziwen Ying and Guixuan Wu and Shengming Xu},
year={2026},
language={en}
}TY - JOUR TI - Efficient Recovery of Vanadium from Vanadium–Titanium Slag (VTS) via Calcification Roasting and Acid Leaching: Process and Mechanism AU - Zherui Zhang AU - Tiantian Liu AU - Shuming Li AU - Jinhui Chen AU - Zhibin Ma AU - Jie Dang AU - Ziwen Ying AU - Guixuan Wu AU - Shengming Xu PY - 2026 LA - en ER -
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