V containing spinel phase was successfully separated from vanadium slag by centrifugal casting. With the process parameters of G5900 (where normal gravity G51), t520 min and T51557 K, almost all V containing spinel phase is enriched in the concentrate, while the tailing is made up of Fe 2 SiO 4 , Fe 2 TiO 4 and Mn 2 VO 4 phases. Under the hypothesis that the vanadium and silicon exist in the slag as V 2 O 3 and SiO 2 , the mass fractions of V 2 O 3 and SiO 2 in the concentrate are 25?2 and 2?2%, while those of the tailing are 0?8 and 32?2% respectively. The recovery ratio of V in the concentrate is up to 97?4%, while the removal ratio of Si is 92?5% by centrifugal separation.

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