A1 Journal article (refereed)
Water leaching of roasted vanadium slag : Desiliconization and precipitation of ammonium vanadate from vanadium solution (2023)
Liu, L., Kauppinen, T., Tynjälä, P., Hu, T., & Lassi, U. (2023). Water leaching of roasted vanadium slag : Desiliconization and precipitation of ammonium vanadate from vanadium solution. Hydrometallurgy, 215, 105989. https://doi.org/10.1016/j.hydromet.2022.105989
JYU authors or editors
Publication details
All authors or editors: Liu, Longjie; Kauppinen, Toni; Tynjälä, Pekka; Hu, Tao; Lassi, Ulla
Journal or series: Hydrometallurgy
ISSN: 0304-386X
eISSN: 1879-1158
Publication year: 2023
Volume: 215
Pages range: 105989
Publisher: Elsevier
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.hydromet.2022.105989
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/83802
Abstract
This research investigated water leaching of roasted vanadium slag and studied the effects of leaching parameters, such as agitation speed, temperature, liquid-to-solid ratio, and leaching time. Further, solution purification via desiliconization and precipitation of ammonium vanadate were studied using the vanadium solution obtained from the water leaching of roasted vanadium slag. Vanadium solution contains residual silicon (1.67 g/L), which should be removed before ammonium vanadate precipitation. Based on the results, vanadium can be effectively recovered from vanadium slag and a recovery efficiency of 96.9% was obtained under optimal water leaching conditions. During solution purification, silicon can be precipitated with Al2(SO4)3 to very low levels without any significant vanadium loss. The ammonium vanadate precipitation achieved a high precipitation efficiency of >99%.
Keywords: vanadium; chemistry; precipitation (active); fertilisers
Free keywords: vanadium slag; water leaching; desiliconization; precipitation; vanadate
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2023
Preliminary JUFO rating: 2
