Abstract: The extremely low grade iron ore in Hebei contains 15.69% of TFe only, and iron ores mainly exist in magnetite (50.16%).In order to provide the technical support for the development of the ore, beneficiation tests on recovery of magnetite are made by the process of dry pre-concentration-stage grinding-low intensity magnetic separation and the process of pre-concentration-stage grinding-fine screening-stage low intensity magnetic separation.Then, the iron concentrates grading at 66.12% and 66.20% with Fe recovery of 50.14% and 49.87% are respectively obtained.According to the experimental results, and combining with the practice of beneficiation at domestic, the process of dry pre-concentration-stage grinding-fine screening-stage low intensity magnetic separation is recommended.

Key words: Extremely low grade iron ore, Dry pre-concentration, Stage grinding, Fine screening