Influence of sulfur content and temperature on the carbon boil and CO generation in Fe-C-S drops

Carbon boil in liquid iron has been studied as a function of some key param eters such as sulfur content (0.005-0.4 %) and temperature (1 370-1 450 deg rees C) in a horizontal tube furnace. The metal-gas reactions and their tim e dependence, that is their dynamic nature, were observed in-situ at the te mperature of interest. Experiments of Fe-C-S. drops were also conducted in a vertical super-kanthal tube furnace to permit rapid quenching of metal dr ops and their subsequent analysis. The starting time of carbon boil phenome non was determined using a CCD camera coupled with a time/date generator co nnected to a video recorder. The initiation time of carbon boil was in the range similar to 5 and similar to 20 sec under the conditions in this study . Mechanism for carbon boil has been proposed.