Abstract: At present， wet process is usually adopted for vanadium extraction from stone coal. Due to the low grade of vanadium， the consumption of acid and alkali in leaching process is large. Pre-enrichment of the vanadium ore deposit before leaching can significantly reduce production costs. Summarizes the development results of the pre concentration technology of China's stone coal vanadium ore， and mainly introduces the scrubbing process， gravity separation process， flotation process and combined mineral processing technology. For the fine-grained clay-type stone-coal-vanadium ore， which is difficult to be effectively enriched by conventional heavy， magnetic and flotation ore processes， the scrubbing process can be effectively enriched by utilizing the difference in hardness or shape of the mineral. The re-election process has large amount of processing capacity， simple equipment structure， and low cost， and the pre-enrichment of stone-coal vanadium ore should be given preference. The flotation process has a wide range of applications， strong adaptability， and high sorting efficiency. It can be used to sort the stone-coal vanadium deposits with complicated state of occurrence and fine grain size， and the product quality of flotation and enrichment is generally higher. With the complex composition of the stone-coal vanadium ore， it is difficult to efficiently separate the vanadium-bearing minerals from gangue minerals by using single beneficiation process， and other processes may be combined and enriched and recovered according to the characteristics of the ore. The coal-vanadium ore pre-enrichment technology has been gradually reduced the processing capacity， the vanadium leaching rate has been significantly increased， and the production cost has been reduced. In the future， advanced molecular modeling technology studies molecular dynamics mechanisms to study the role of flotation chemicals and mineral surfaces， develops new and more efficient flotation agents， and develops gravity separation equipment that is suitable for vanadium ore. In the production process， the traditional mineral processing and metallurgical boundaries will be gradually diverted， and the combination of smelting and metallurgy will be developed to improve the process and improve the utilization of stone coal resources.

Key words: Vanadium bearing stone coal, Pre-concentration, Scrubbing classification, Flotation, Combined process