Abstract: Iron grade of Qidashan iron ore is 31.56%，the content of FeO is around 6.59%，the main iron minerals are hematite and magnetite，the recovery of fine iron particles is not satisfactory via the original stage grinding-classification-gravity concentration-magnetic separation-anionic reverse flotation technology.In order to reduce production costs and improve economic benefits of Qidashan iron ore，new beneficiation process research was conducted.The results showed that with the first stage grinding fineness of 65% passing 0.074 mm，and second grinding fineness of 90% passing 0.074 mm，the concentrate with 66.80% iron and recovery of 82.90% was obtained via the process of stage grinding-classification-stage gravity concentration-magnetic separation-anionic reverse flotation process，comprehensive concentrate with iron grade of 66.80% and recovery of 82.90% was obtained，gravity concentrate and low intensity magnetic concentrate account for 70.21% and 7.57% of total concentrate.Tailings of first stage spiral chute via magnetic separation-reverse flotation，can effectively avoid fine iron ore loss.Decrease of grit size for classification increase the capacity of gravity separation，adding low intensity magnetic clean separation process to produce final concentrate，has important significance of decrease reagent dosage even the total beneficiation cost.The results has guidance meaningful for realization of high efficient separation of Anshan-type iron ore.

Key words: Anshan-type iron ore, Coarse and fine fractions classification, Spiral marginal tailings, Combined flowsheet