Method for decomposing stone coal vanadium ore by aging with sulfuric acid

The invention discloses a method for decomposing stone coal vanadium ore by aging with sulfuric acid, which comprises the following steps: crushing the stone coal vanadium ore, carrying out fine grinding until the 65% of the stone coal vanadium ore is smaller than 0.074mm, controlling the water content at 3-8 wt%, adding sodium sulfate which accounts for 3-8 wt% into the material, adding concentrated sulfuric acid which accounts for 15-30 wt% into the material, aging for 12-48 hours, and leaching the aging material with water, wherein the liquid-to-solid ratio ml/g for leaching is 1.5:1-3:1, the leaching reaction is carried out at 85-100 DEG C for 2-6 hours, the vanadium leaching rate in the stone coal vanadium ore is higher than 80%, and the iron leaching rate is lower than 5%. The technique can implement controlled leaching of iron, and has the advantages of short process, high vanadium leaching rate, low iron leaching rate and the like.