Abstract:Uranium and vanadium were extracted from a black shale through acid curing leaching process, and removal of Fe(Ⅲ) during leaching was studied. The results show that the ore can be treated under the optimum curing conditions of acid dosage of 12%, curing temperature of 90 ℃, aging time of 2.5 h and ore size of -0.15 mm, and then leached by water for 1 h at room temperature, Fe(Ⅲ) is removed under the conditions of sodium sulfate adding amount of 0.6%, precipitation temperature of 95 ℃, precipitation time of 0.5 h and leaching terminal pH value of 1.2. Under the above steps and conditions, uranium leaching rate is more than 92%, vanadium leaching rate is more than 68%, and removal rate of Fe(Ⅲ) is more than 75%. This process can effectively reduce reagent consumption in subsequent metal separation and wastewater treatment process.