Abstract
In order to improve manganese yield during the reduction of manganese ore, the reduction kinetics of manganese oxide in BOF type slag has been investigated on an experimental scale. The reduction rate of (MnO) was promoted for the slag of low basicity and high contents of (FeO). The maximum reduction rate of (MnO) has been found for an iron melt with carbon mass contents of 1.9 %. The silicon in metal may accelerate the reduction of manganese oxide in slag. The kinetic model for the reduction rate of (MnO) has been formulated based on the assumption that the reduction of (MnO) was controlled by 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 agreement with the experimental one. The reduction behaviour of (MnO) can be described by the present model.
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