Abstract: In order to extract vanadium from weathering coal stone in Shaanxi with high efficiency at a low cost，vanadium of which accounts for 1.20%，conditions of sulfuric acid curing and hot water leaching were studied.Results showed that with the mass ratio 10∶4 of mix coal samples with particle size -200 mesh accounting for 80% and 98% concentrated sulfuric acid，then curing at 140 ℃for 3 h，and adding fresh water according to the liquid solid ratio of 2 mL/g after cooling to room temperature，stirring (300 r/min) and leaching for 30 min at 50 ℃，vanadium leaching rate reached 76.10%.Test index is good and it is a high efficiency and low cost process for vanadium extraction from this coal stone.

Key words: Weathering coal stone, Concentrated sulfuric acid curing, Water leaching, Vanadium extraction