Abstract: Research on mineral processing of an iron ore from Sudan was carried out.The experiments showed that under conditions of roasting time at 850 ℃, with the ratio of ore to coal of 100∶10 for 80 min, the roasting product was ground to 74%-0.074 mm, and then entered into magnetic separation.After then the concentrates was leached for 180 min with 10% hydrochloric acid, the iron concentrate could be obtained with grade of 60.52%, the yield of 34.65%, the recovery of 51.26% and the phosphor content of 0.29%.

Key words: Limonite, Roasting-Magnetic separation, Acid leaching