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2011-Sustainable Industrial Processing Summit
|Flogen Star OUTREACH
|2291-1227 (Metals and Materials Processing in a Clean Environment Series)
This paper deals with a thermo-chemical model of BOF based on detailed physico-chemical analysis. The model is also to predict the required amount of raw materials to be input for the target carbon content and temperature. The model incorporates empirical relations obtained from plant data to improve accuracy of prediction. The variables such as Whm, Wslag, WCaO, WMgO, WCO2, WO2, WScrap are solved simultaneously with the help of mass and heat balance equations. The results obtained are then plotted for variation of FeO content of the slag with percentage carbon. It is found that for low carbon heats, FeO content is independent of carbon content but it depends on carbon content for high heats. The model also shows the variation of scrap content vs iron ore content required for obtaining the desired heat. This helps to reduce the consumption of scrap vis a vis iron ore. An attempt was made to develop software based on this model. However, when several parameters are changed at the same time, it fails due to non linear process.