A review on the roasting-assisted leaching and recovery of V from vanadium slag

Vanadium (V) is widely used and is an important strategic resource due to its superior physicochemical properties. Securing the sustainability of vanadium production is crucial due to the rising global demand for the metal. The primary raw material used in vanadium extraction is vanadium slag, which is produced during the smelting of vanadium titanomagnetite (VTM). Resources and the environment both benefit from the recovery of vanadium resources from vanadium slag. This review summarizes the sources and characteristics of vanadium slag, and comprehensively compares and discusses various treatment methods of vanadium slag, including roasting, leaching, precipitation and strengthened vanadium extraction process. Finally, the prospects and challenges of recovering vanadium from slag are assessed. Literature review shows that the roasting assisted leaching process is the most effective way to extract vanadium from vanadium slag. Some promising methods offer the advantages of high selectivity and environmental friendliness and deserve further research in this field in the future. The purpose of this paper is to provide some reasonable development directions for a completely harmless treatment of vanadium slag.

Automated summary

This paper reviews the sources and characteristics of vanadium slag, and comprehensively compares and discusses various treatment methods. The roasting assisted leaching process is found to be the most effective way to extract vanadium from vanadium slag.