Pre-concentration of vanadium-bearing mica in Graphite Tailings

For the purposes of obtaining useful vanadium and comprehensive utilization of graphite tailings,the pre-concentration of vanadium-bearing mica from was achieved by flotation.The results showed that under the rough separation of pH=2.5,100g/t compound inhibitor(sodium silicate∶soluble starch=2∶1) and 100g/t dodecylamine after graphite flotation,the grade of the final vanadium-bearing mica concentration was more than 75% and the recovery was 68.05% with the flow sheet which was once rough separation,once sort separation and once cleaning separation.Also,the grade of V₂O₅ in the concentration was 0.80% and the recovery was 74.18%,which reached the mill feed grade of vanadium ore.