Reduction kinetics of manganese oxide in basic oxygen furnace type slag

In order to improve manganese yield during the reduction of manganese ore, the reduction kinetics of manganese oxide in BOF type slag has been investi gated on an experimental scale. The reduction rate of (MnO) was promoted fo r the slag of low basicity and high contents of (FeO). The maximum reductio n rate of (MnO) has been found for an iron melt with carbon mass contents o f 1.9 %. The silicon in metal may accelerate the reduction of manganese oxi de in slag. The kinetic model for the reduction rate of (MnO) has been form ulated based on the assumption that the reduction of (MnO) was controlled b y the mass transfer through the metal and slag boundary layers at the metal /slag interface. The result calculated by the kinetic model showed a good a greement with the experimental one. The reduction behaviour of (MnO) can be described by the present model.