The combined process, high intensity magnetic preconcentration?magnetization roasting?magnetic separation, was used to prepare iron concentrate from roasted cyanide tailings with TFe grade of 30.71% in Henan province. The results showed that rough iron concentrate with TFe grade of 44.96% and recovery rate of 78.27% was obtained with high intensity magnetic separation at the magnetic field intensity of 1511.54 kA/m. The rough iron concentrate mixed with 10wt% coke powder was roasted at 750℃ for 45 min. The roasted product was further treated with two-stage grinding and two-stage magnetic separation. The iron concentrate with TFe grade of 61.71% and recovery rate of 68.66% was obtained at the grinding fineness of less than 0.028 mm of 63.9%. Magnetic separation tailings, with a yield of 16.79%, could be classified as common industrial solid wastes due to no residual cyanides. Some hematite was not reduced at the temperature of below 700℃,and reduced magnetite could be further transformed to magnesioferrite, fayalite and wustite at the temperature of above 800℃, which reduced the content of magnetite and resulted in loss of iron in the magnetic separation. As the roasting temperature was 750℃, the highest content of magnetite in roasted samples was achieved.