Vanadium extraction methods mainly include wet vanadium extraction and fire (oxidation) vanadium extraction. Wet vanadium extraction is to extract vanadium directly from vanadium-containing titanium magnetite ore. Pyrovanadium extraction is to obtain vanadium-containing molten iron through pyrometallurgy, and then oxidize to obtain vanadium slag, which becomes the raw material for making vanadium-iron alloy after enrichment. The traditional vanadium extraction process has disadvantages such as high cost and secondary pollution. In the future, we should actively promote technological innovation and develop in the direction of low cost, green and high recovery rate.
In addition to vanadium ore resources, vanadium-containing wastes also contain a variety of metals with important economic value. There are many types of vanadium-containing waste, including vanadium-containing steel slag, vanadium extraction tailings, deactivated catalysts, and spent electrolytes for vanadium batteries. Recycling vanadium-containing waste as secondary resources can not only bring good economic and environmental benefits, but also has great significance for the recycling of resources.