In order to understand effective conditions to recover chromium from stainless steel-making slags, the kinetic behavior of Cr
2O
3 reduction by iron–carbon melts were investigated at various conditions by using solid Cr
2O
3 powder and Cr
2O
3–CaO–SiO
2–Al
2O
3–CaF
2 slags. The effect of temperature on the reduction rate of solid Cr
2O
3 was fairly large and the apparent activation energy was about 180 kJ mol
-1. The overall reduction of solid Cr
2O
3 was considered to be controlled by a chemical reaction step. For reduction of Cr
2O
3 in slag, the addition of CaF
2 to slag and of silicon to iron melt promoted the reduction rate, but the reduction of Cr
2O
3 powder was retarded by the silicon addition. The kinetic behavior of reduction of Cr
2O
3 in slag could be well simulated by the kinetic reaction model proposed previously. As a result, it was found that the overall reduction rate of Cr
2O
3 in slag was controlled by the mass transport in the slag phase.
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