Abstract
Upon studying the production of metallic magnesium by means of Fe-Si reduction process, the following results were obtained. (1) Metallic iron in Fe-Si has no connection with the reduction of MgO, and this is also ascertained from a chemical-thermodynamic view-point. (2) The yield, and the amount of magnesium per unit charge, increase with the rise of Si% in Fe-Si. (3) A considerable amount of MgO remains unreacted, due to the formation of Mg2SiO4, the main product in the residue, based on MgO—Fe-Si reaction. (4) Excess in Si% over the theoretical content in MgO/Si (mole ratio) increases the yield for MgO, but MgO% in excess decreases the effectiveness of Si. (5) Both Al2O3 and Fe2O3 decrease the yield of metallic magnesium.
