Abstract: Research situation of recovering iron from low temperature bayer process red mud by three different kinds of magnetic separation flow are introduced. Research results indicate, efficiency and recovery rate of metal are both high by coarse-fine separation-middling(s) grinding and separation technology, show the energy-saving idea of abandoning and recovering as early as possible adequately, over grinding and separation and metal run off are reduced furthest. Grade and recovery rate of iron of granule iron concentrate are 59.42% and 22.82%, coarse grain iron concentrate 55.30% and recovery 70.04% could obtain separately, comprehensive grade reach to 57.26% and comprehensive recovery rate 92.86% of granule and coarse grain iron concentrate.

Key words: Red mud, Coarse and fine separation, Screening