Recycle of Valuable Metals in Converter Steel Slag for Preparing Multidoped M_xMg_(1-x)Fe2O4 (M = Mn, Ca) Spinel

摘要

A new route for preparing multidoped spinels M_xMg_(1-x)xFe2O4 (M = Mn, Ca) by using converter steel slag as raw materials is proposed in this study. All of Mg, Fe, M, and dopants used to prepare MxMg1-xFe2O4 were simultaneously recovered from the slag. The results indicate that the slagderived MxMg1-xFe2O4 exhibited a single-phase spinel and when calcined at 1000 °C gave a saturation magnetization of 17.48 emu/g.