Deng Qi, ZHANG Dongmei

（Shandong Aluminum Company,Shandong Zibo 255052,China）

Abstract:Red mud is the residue in alumina production process. With the rapid development of alumina industry, its emissions are growing rapidly. At present, both at home and abroad, red mud is wet stored in most alumina plant. More yard construction and maintenance fees are cost and its strong alkalis make the soil more alkaline. As the surface and underground water are polluted and the ecological environment is harmed directly or indirectly, the comprehensive utilization of iron from red mud has become a worldwide problem. In order to reduce the waste of red mud and thoroughly recycle the iron minerals in it, the extraction of iron from red mud by magnetic separation equipment was tested through experiments.

Key words： red mud; iron separation; high-gradient magnetic separation equipment with permanent magnet; recovery rate