Reductive Removal of Solutes in Molten Iron by Using Immiscibility of Iron and Ca-Alloy

Abstract

Abstract In order to produce high purity iron (or high clean steel) from low grade ores and/or iron scraps in steel industry, it is necessary to develop a new method to remove the impurities in molten iron, which can improve the refining ability dramatically. In this work, we focus on the reductive removal by using immiscibility of iron and calcium. The oxygen partial pressure is expected to be kept under 10 -20 atm by the introduction of calcium alloy phase, which can enhance the reductive removal of impurities in molten iron. In this work, we examine the possibility of the reductive removal of impurities by the use of the calcium alloy phase.