Effect of Water Vapor on Sulfur Distribution Between Liquid Fe and MgO-Saturated Slag Relevant to a Flash Ironmaking Technology

摘要

As part of research to develop a novel flash ironmaking process using natural gas or hydrogen to reduce iron ore concentrate, sulfur distribution between MgO-saturated slag and iron was determined in the temperature range 1550-1650 degrees C under three different gas atmospheres: H-2/H2O, H-2/H2O/CO/CO2, and CO/CO2. The distribution ratios of sulfur (L-S) were 4.0, 2.0, and 0.8, respectively, under these atmospheres. In the flash process over approximate to 25wt% S volatilize during ore concentrate downward flight in the reactor shaft in addition to avoiding coke. Therefore, the sulfur content of iron produced by the flash ironmaking process will be much lower than that of hot metal produced by the BF.