2011 Volume 51 Issue 8 Pages 1262-1268
Increased reactivity of the reducing agent is desired for the blast furnace operation with a low reducing agent. In the present study, the catalytic effects of iron, calcium oxide, and a multi component oxide melt on the gasification reaction of reducing agent were investigated. The addition of Fe, and CaO enhanced the gasification reaction. The catalytic effects of Fe and CaO were only observed in the atmospheres of around Fe/FeO equilibration and stable CaCO3 conditions, respectively. Moreover, the conditions of contact between the reducing agent and the added material affect the reactivity of the reducing agent. Molten FeOX–SiO2–Al2O3 oxide also enhances the gasification reaction of the reducing agent.
The reactivity of the carbon iron ore composite supported with Fe and multi component oxides was measured. It was found that the contact between coke and iron ore in the carbon iron ore composite enhances the reactivity.