Mill scale is very attractive industrial waste due to its richness in iron (about = 72% Fe). In this paper, the characterizations of mill scale were studied by different methods of analyses. The produced mill scale briquettes were reduced with hydrogen at varying temperatures, and the reduction kinetics was determined. Two models were applied and the energy of activation was calculated.
Mill scale is very attractive industrial waste since it is rich in iron
(about = 72 % Fe) and it is suiTab. for direct recycling to the blast furnace
via sintering plant. In this paper the characterizations of raw materials
were studied by different methods of analyses. The produced briquettes were
reduced with different amounts of hydrogen at varying temperatures, and the
reduction kinetics was determined. Two models were applied and the energy of
activation was calculated.
Mill scale is a very attractive industrial waste due to its elevated iron
content (about = 69.33% Fe) besides being suiTab. for direct recycling to the
blast furnace via sintering plant. In this paper the characteristics of raw
materials and the briquettes produced from this mill scale were studied by
different methods of analyses. The produced briquettes were reduced with
different amounts of coke breeze at varying temperatures, and the reduction
kinetics was determined. The activation energy of this reaction ? 61.5
kJ/mole for reduction of mill scale with coke breeze in the form of
briquettes with 2% molasses where the chemical reaction interface model is
applicable.
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