Titanium Concentration of Dry Tailings from Iron Separation of a Low-grade Vanadium-titanium Magnetite

The dry tailings from iron separation of a low-grade vanadium-titanium magnetite contain 9.65% TiO₂. Due to an acute shortage of water in the mining area,titanium resources in the tailings have not been recycled. Considering the dissemination features of iron and titanium minerals in the tailings,a technical solution of dry pre-concentration for discarding followed by grinding and low-intensity magnetic separation for iron removal,then high-intensity magnetic separation and flotation for titanium concentration was designed. The effects of relevant factors (magnetic field intensity,grinding fineness,etc.) on the results were studied. Finally,the obtained titanium concentrate contained 45.29% TiO₂ with a recovery rate of 45.34%,which indicates an effective recovery of titanium resources in the ore.