Abstract: There is significant amount of ilmenite ore in Yunnan province，which belongs to laterite-type placer deposit.Abundant of particles with a small size caused by mineralization have a great effect on the benefication.Therefore，these small particles with a lower content of TiO₂ should be removed prior to benefication resulting in a good economical value.The results at a plant scale showed that grade of TiO₂ was increased from 9.84 to 15.76% for the underflow and meantime，the overflow product containing 1.17% TiO₂ was obtained with a recovery of 5.08% after desliming using efficient inclined plate classifier，and with a classification efficiency for 0.037mm 84.63%.Following by a gravity concentration using sluice，a concentrate containing 33.54% of TiO₂ was obtained with a recovery of 86.58%.Compared with the flowsheet without desliming，the concentrate is increased containing 9.83% of TiO₂，and 32.61% in recovery.