Abstract: Process mineralogy was conducted on a stone-coal vanadium ore from Hubei by chemical analysis,microscope observation,energy spectrum analysis of mono-mineral chemical components,MLA automated quantitative surveying technique to provide guidelines for vanadium extraction from the ore.The mainly results are as follows: ①the V₂O₅ content of the ore was 0.96%,and vanadium bearing minerals includes vanadium mica (fiber vanadium mica,carbon vanadium mica and flake roscoelite),vanadium-containing limonite,calcium vanadium garnet and fervanite,hydroxyl copper,vanadium barium copper,etc.; ②Although vanadium exists in many minerals,the objective minerals are vanadium mica,turanite,and vesignieite only with V₂O₅ distribution rate of these three 97.08%; ③Both the vanadium-bearing limonite and calcium-vanadium garnet have a certain magnetism,while vanadium mica is lower.According to the conclusion above,it is recommended that the high intensity magnetic separation is adopted to enrich vanadium bearing limonite and calcium vanadium garnet,vanadium mica is pre-enriched by flotation,and then vanadium is recovered from magnetic separation concentrate by the direct acid leaching method,and from flotation concentrate by acid leaching process or roasting-acid leaching process with the addition of leaching agent.

Key words: Stone-coal vanadium ore, Process mineralogy, Vanadium extraction