Abstract: irect reduction—magnetic separation test were conducted on a bayer red mud. The effect of direct reduction temperature, direct reduction time, reducing agent dosage, CCO dosage, NCC dosage on the iron powder of its grade and recovery were examined. The optimum level of each factor was obtained through orthogonal test: direct reduction temperature of 1 200 ℃, direct reduction time of 2.5 h, coal dosage of 30%, CCO dosage of 15%, NCC dosage of 3%,and iron concentrate with iron grade of 91.34%, iron recovery of 88.36% was obtained in optimum parameters.

Key words: Bayer red mud, Direct reduction, Magnetic separation, Iron powder