Technology Progress in Comprehensive Utilization of Converter Vanadium Slag

Converter vanadium slag is a raw material for direct extraction of vanadium,which contains valuable metals such as vanadium,chromium,titanium and iron.At present,the extraction process of converter vanadium slag is mainly divided into sodium roasting-water leaching and calcification roasting-acid leaching.The process of sodium roasting-water leaching will produce a lot of harmful gases which will pollute the environment.Although no waste gas is generated during the process of calcification roasting-acid leaching,there are many impurities in the acid leaching solution,which affects the quality of vanadium products.Based on the necessity of comprehensive utilization of converter vanadium slag,this paper introduces the latest new technology for vanadium extraction from converter vanadium slag,discusses the advantages and disadvantages of the new process,and proposes some suggestions of comprehensive utilization of converter vanadium slag.