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 editorsLiu, Longjie; Kauppinen, Toni; Tynjälä, Pekka; Hu, Tao; Lassi, Ulla

Journal or seriesHydrometallurgy

ISSN0304-386X

eISSN1879-1158

Publication year2023

Volume215

Pages range105989

PublisherElsevier

Publication countryNetherlands

Publication languageEnglish

DOIhttps://doi.org/10.1016/j.hydromet.2022.105989

Publication open accessOpenly available

Publication channel open accessPartially 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%.


Keywordsvanadiumchemistryprecipitation (active)fertilisers

Free keywordsvanadium slag; water leaching; desiliconization; precipitation; vanadate


Contributing organizations


Ministry reportingYes

Reporting Year2023

JUFO rating2


Last updated on 2024-02-07 at 23:06