Kinetics of Reduction of FeO from Slag by Graphite and Coal Chars

摘要: The rates of reduction FeO from iron-saturated FeO-CaO-Al2O3-SiO2 slags by graphite, coke, bituminous coal and anthracitic chars at temperatures in the range 1 673-1873 K have been measured using a sessile drop technique. extents reaction were determined EPMA analysis quenched samples, on line gas quadrupole mass spectrometer. shown to be dependent critically carbon type. For geometry used this investigation graphite coke are observed faster than with chars. This unexpected finding is associated differences dominant chemical transfer mechanisms occurring interface. High occur formation liquid Fe-C alloy product gasification alloy. principally carbon/gas interface slag phase transfer.