In a certain iron-sulfur symbiotic ore in Hubei,the main metallic minerals are magnetite and pyrite,while the gangue minerals are mainly diopside,feldspar,mica,chlorite,carbonate,quartz. Sulfides and gangues in the ore are closely linked to magnetite,requiring high grinding fineness to obtain qualified iron concentrate. For the raw ore with w(TFe) of 39. 90% and w(S) of 2. 57%,a combined process consisting of "crushing and classification-rough-grained dry dressingstage- by-stage grinding and magnetic separation-elutriation selection” is used for separation. Results show that under coarse-grained dry blasting (magnetic field strength 4 000 Oe,rotational speed 80 r/ min),first-stage grinding fineness < 74 μm accounting for 65%,magnetic field strength 1 200 Oe,second-stage grinding fineness < 74 μm accounting for 85%,magnetic field strength 1 200 Oe,three-stage magnetic field strength 1,000 Oe,and elutriation selection,favorable indicators can be obtained:iron concentrate yield of 52. 59%,w(TFe) of 65.56%,recovery rate of 86. 41%,and w(S) below 0. 6%. In addition,the output sulfur-bearing medium ore w(S) is 5. 83%,with a recovery rate of 82. 87%,creating conditions for comprehensive recovery of sulfur resources. This process has reasonable parameter matching and stable and reliable operation,effectively solving the problem of close symbiosis of magnetite with sulfides and gangue,forming a feasible technical route.