Abstract: Based on the study of the properties of the red mud produced by Bayer process,the best technology and conditions for recovering iron from mud are studied.The main mineral of red mud is hematite and hydrated aluminium silicate and the final technology for recovering iron is magnetization roasting-magnetic separation,and the technical parameters for the separation are as follows: the roasting temperature 750 ℃,the roasting time 20 min,the amount of the mixing coal 6%,twice magnetic separation,the magnetic field intensity 0.1 T,based on which the iron concentrate with the iron grade 62.36%,iron recovery 49.60% and S grade 0.273% is obtained.  

Key words: Red Mud Bayer Process, Iron concentration, Magnetization Roasting Magnetic Separation