Research Progress of Vanadium Extraction from Vanadium Bearing Steel Slag

Vanadium-containing steel slag is produced in the steelmaking process of vanadium titanomagnetite, and it is also a valuable secondary resource.Therefore, how to recover vanadium resources in steel slag with low cost and high efficiency is an important measure for my country's vanadium industry.The process route, principle and research status of the current vanadium extraction method were summarized, and the advantages and disadvantages of pyrotechnic vanadium extraction were briefly introduced.The development status of wet vanadium extraction processes such as sodium vanadium extraction, calcification vanadium extraction, blank roasting vanadium extraction, microwave roasting vanadium extraction, and direct leaching were mainly described.The future research direction of the process was prospected to realize the green development of the vanadium extraction process with high efficiency, low cost and no pollution.