Abstract Vanadium (V) and titanium (Ti) are widely used in high‐performance ceramics due to their excellent magnetic, electrical, and chemical properties. Vanadium slag from the smelting of vanadium–titanium magnetite contains large amounts of V and Ti, which are enriched into spinel in the form of mutual replacement. However, the lack of research on the crystallization mechanism of V and Ti limits their respective recovery. In this study, the crystallization of V and Ti in vanadium slag with temperature was investigated, where V was primarily crystallized into V‐spinel between 1773 and 1573 K, while Ti was mainly crystallized into Ti‐spinel between 1573 and 1373 K. Afterward, the enhanced separations of V‐spinel and Ti‐spinel were realized by controlling the cooling rate using super‐gravity in the corresponding temperature range, respectively. High‐purity crystals of V‐spinel with up to 42.68 wt.% V 2 O 3 and Ti‐spinel containing up to 32.87 wt.% TiO 2 was obtained. On this basis, the crystallization mechanism of V and Ti was revealed by crystal characterization, and the results showed that the crystallization of Ti lagged behind that of V due to the lower crystal stability of Ti‐spinel than that of V‐spinel. This study provides a theoretical basis and methodological guidance for the efficient utilization of vanadium slag.
.webp)
Discussion(0)
No comments yet. Be the first to comment.