Abstract: To address the problem of heat waste of vanadium slag in the existing vanadium extraction process,a new process is proposed in this paper to extract vanadium from molten vanadium slag by direct oxidation and sodium activating method.On the basis of current vanadium extraction process,the new process was verified by thermodynamic and kinetic calculation and analysis,and then simulation tests were carried out in the laboratory.The results show that with enough heat,vanadium slag can be kept in molten state during the vanadium extraction process.The dynamic conditions of the new process are noticeably better than the existing process.The oxidization rate of vanadium slag is about 90% and vanadium leaching rate can reach 82% or above with enough oxygen and Na₂CO₃ content at 20% ~30% of vanadium slag’ weight.Thus,the feasibility of the new process is confirmed by the results.