Abstract: A large amount of additive is consumed to improve the leaching rate of vanadium in the process of extracting vanadium from stone coal，while substantial Polyvinyl chloride(PVC) waste is not recycled well.In response to this situation，PVC wastes were adopted as stone coal roasting additive to study the process conditions of vanadium extraction from stone coal.The results showed that:①Adding 10% PVC waste of stone coal quality in the roasting process，under the roasting conditions of heating rate 10 ℃/min,roasting temperature 800 ℃，roasting time for 60min and the leaching conditions of ratio of liquid to solid 1.5 mL/g，concentration of sulfuric 15%，leaching temperature 95 ℃ for 4 h，the leaching rate of vanadium could reach 92.60%，which is increased by 6.50% percentage points compared with blank roasting and acid leaching process.②The leaching rate of major element in stone coal are significantly enhanced by adding 10%PVC in the stone coal roasting stage，which shows that the addition of PVC can effectively destroy the mineral structure and promote the leaching of vanadium during acid leaching while it does not have an adverse effect on subsequent enrichment of vanadium and vanadium precipitation.Therefore，adding PVC waste in the process of vanadium extraction from stone coal can improve the effect and reduce the cost of vanadium leaching and realize the comprehensive utilization of PVC waste with the economic performance and environment benefit remarkable improved.

Key words: Stone coal, Extracting vanadium, Additive, Roasting, PVC waste