Abstract: In order to provide a reference for overcoming the difficulty in utilization of high calcium and high phosphorus vanadium slag, the main vanadium extraction processes from slag are summarized such as sodium roasting-vanadium extraction by water leaching, calcified roasting -vanadium extraction by acid leaching, calcified roasting-vanadium extraction by sodium carbonate leaching, vanadium extraction by solvent, and vanadium extraction by ion exchange.Based on these processes, such processes as sodium roasting-vanadium extraction by water leaching, calcified roasting-vanadium extraction by acid leaching, calcified roasting-vanadium extraction by sodium carbonate leaching are focused on, and advances in some new processes in treating high calcium and high phosphorus vanadium slag are emphasized, including calcified roasting-vanadium extraction by ammonium carbonate leaching, calcified roasting-vanadium extraction by oxalate leaching.In view of the defects in these processes, it is clear that fining additives for phosphorus removal in calcified roasting, declining the dosage of leaching agent in ammonium carbonate leaching and simplifying the leaching agent types in oxalate leaching should be the research direction for vanadium extraction from high calcium and high phosphorus vanadium slag.

Key words: High calcium and high phosphorus vanadium slag, Calcified roasting, Ammonium carbonate leaching, Oxalate leaching, Phosphorus removal