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Oxidation of Manganese - Steel Making - Lecture Notes

Lecture Notes, Material Science And Technology

Post: April 20th, 2013
Description
The main Points, which I found very informative in steel making are:Oxidation of Manganese, Behaviour of Manganese, Reduction of Manganese, Oxidation of Carbon, Rimming Reaction, Solidification of Steel, Decarburization, Iron-Carbon Melt, Mole Fraction, Activity Coefficient
The main Points, which I found very informative in steel making are:Oxidation of Manganese, Behaviour of Manganese, Reduction of Manganese, Oxidation of Carbon, Rimming Reaction, Solidification of Steel, Decarburization, Iron-Carbon Melt, Mole Fraction, Activity Coefficient
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Lecture 7: Oxidation of manganese and carbon Contents: Behaviour of manganese Oxidation of manganese Reduction of manganese Oxidation of carbon Rimming reaction Illustration Key words: Solidification of steel, decarburization, BOF steelmaking Behavoiur of manganese in iron-carbon melt: • • • Mn is soluble in iron in any proportion Mn forms ideal solutions in iron Carbon lowers the activity of Mn in Fe-Mn-C system by forming Mn3 C. Oxidation of Manganese: [Mn] + [O] = (MnO) Mn is oxidized readily at relatively low temperatures and can form oxides like MnO, MnO2 , Mn2 O3 etc. But MnO is stable at high temperature. [Mn] + (FeO) = (MnO) + [Fe] (1) (2) The reaction 1 occurs with dissolved oxygen in metal, whereas reaction 2 is a slag/metal reaction. Both reactions are exothermic. Lower temperature favours oxidation of Mn from metal to slag; whereas higher temperature favours reduction of MnO of slag and there occurs reversal of Mn. Reduction of MnO in slag is important; we conside..

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