Abstract: Due to the change of ore properties，the recovery index of an iron mine in Liaoning fluctu‐ ates greatly，and the tailings run seriously.In order to explore a suitable beneficiation process and reduce the metal loss rate of tailings，systematic experimental studies such as wet pre-concentration，grinding fineness optimization，and magnetic separation field strength exploration are carried out for the iron ore，and appro‐ priate process parameters are determined. The test results show that the concentrate product with yield of 38.47%，iron grade of 63.25% and total iron recovery of 79.09% can be obtained by using the optimized two-stage grinding and four-stage magnetic separation process.The overall separation index is good，which provides scientific basis and technical support for the efficient development and utilization of the iron ore， and is of great significance to improve the utilization rate of iron ore resources.

Key words: iron ore, ball milling, wet magnetic separation, full process test