Abstract: Strong magnetic separation-flotation becomes the best separation circuit for vanadium-titanium magnetite.The feeding of titanium flotation is the tailing of iron separation.The titanium flotation process is featured by high input TiO₂ content,high solid content（50%～65%）,high specific gravity of ore and coarse mineral particles,all those presents a challenge for air dispersion.In this paper,the dynamics characteristics of flotation cells in Sichuan Lomon had been studied.The measurement result shows good axial and radial dispersion in flotation cell.As the grade of titanium is high and the size of mineral particles is coarse,the coarse mineral particle is liable to collide and attached with the bubbles,but it is easy to detach during the transportation towards the lip.In the cell there is a significant gradient in slurry concentration. The slurry concentration of the 3 levels（1 700 mm,2 200 mm,2 700 mm） is about 55%,but the slurry concentration decreases from 55% to 25% towards the lip.