발간논문

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Vol.31, No.6, 793 ~ 801, 1993
Title
Equilibrium study of Mn between Mgo - saturated Slags containing FeO and Iron
정성모Sung Mo Jung, 김선효Seon Hyo Kim, 민동준Dong Jun Min, 이창희Chang Hee Rhee
Abstract
The smelting reduction of manganese oxide has been employed to increase the Mn level of steels. In order to understand the behavior of manganese oxide in smelting reduction process, the manganese equilibrium between ironmaking slag containing FeO and pure silver melt was investigated over the temperature range of 1400∼1500℃. The oxygen partial pressure was varied by controlling the mixing ratio of CO and CO₂gases. The Mn contents in silver melts have been thermodynamically converted into those in supercooled and carbon-saturated iron melts. The activity coefficients of MnO in the slags were determined experimentally and showed a tendancy to decrease by increasing the FeO content in the slag. The equilibrium manganese distribution between slag and iron was found to increase with the increase of FeO content and the decrease of stag basicity. The temperature dependence of equilibrium manganese distribution was also determined in the temperature range of 1400∼1500℃ through the regression analysis of experimental data.
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