Abstract
Chemical transport reactiOn of silicon from a sintered silicon carbide disc to Fe-C melt by SiO gas medium at 1450 to 1600°C was investigated in the view of kinetics.
The results were interpreted by a mass transport equatiOn derived from the mixed control theory, topochemical reactiOn theory and unreacted core model. Numerical values of all coefficients included in the equatiOn were experimentally determined as follows._??_
The most important factor for the silicon transfer by gaseous medium was found to be an activity of carbon in Fe-C melt. Therefore, the possibility of gaseous silicon absorptiOn into freely falling liquid'iron droplets in a blast furnace was concluded to depend upon the carbon content in droplets.
The derived general equatiOn is expected to be applicable to other conditiOns than experimentally undertaken.
