발간논문

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Vol.36, No.12, 2228 ~ 2235, 1998
Title
Reduction Kinetics of Manganese Oxide in CaO-SiO2-MgOsat.-FeO-MnO Slags
손호상 , 김정식 , 정우광 Ho Sang Sohn , Jeong Sik Kim , Woo Gwang Jung
Abstract
In order to improve manganese yield by smelting reduction of manganese ore in less slag blowing at BOF, the reduction kinetics of manganese oxide in CaO-SiO₂-MgO_(sat)-FeO-MnO slag was investigated under experimental scale. The effects of temperature, slag composition and addition of CaF₂ on the reduction rate of MnO in slag were examined. From the assumption that the reduction of (MnO) is controlled by the equilibrium manganese distribution and mass transfer through the metal and slag boundary layers at the metal/slag interface, the rate equation was obtained. The kinetic model suggested in the present study showed good agreement between calculated and observed values of 〔Mn〕 and (MnO) and the reduction behaviour of (MnO) in slag can be described by the present model.
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