Abstract: In order to find out the problems and separation effect of titanium 16 m3 flotation series， the process mineralogy of flotation feed，titanium concentrate and tailings was studied. The foam，particle size distribution of single flotation machine and the main elements（TiO₂）of foam and underflow products in each operation were analyzed. At the same time，the aeration volume，air dispersion and foam loading rate of pulp phase of each single flotation machine were sampled and analyzed. The analysis results show that the flotation time of the rough scavenging and cleaning three operations is insufficient，and the enrichment ratio of the fourth cleaning operations is not high. The bubble load rate of the scavenging operation decreases sharply during the rising process，and the ilmenite lost in the tailings is mainly monomer，and is mainly coarse-grained ilmenite. It is recommended to control the floating particle size on site to reduce the content of +0.15 mm particle size in flotation feed，increase the automatic control of gas volume and liquid level braking control system，realize the coordinated control of multiple operations，and ensure the control accuracy.

Key words: 16 cubic flotation machine, process investigation, foam load ratio, air dispersion