![]() In the present work, the FactSage studies of 275 no. Therefore, there is a prerequisite to identify a slag regime that has low liquidus temperature and low viscosity. ![]() However, high Al 2O 3% in BF slag has an adverse impact on liquidus temperature and viscosity. The slag rate can be reduced by operating the BF at high Al 2O 3%. The latter would increase the slag rate, while the other option is not cost effective. Therefore, to reduce the slag rate there is a need to either remove alumina from the iron ore or to add more silica to dilute the effect of alumina in slag. Indian iron ore is known to have adverse alumina–silica ratio. Decreasing the slag rate can lead to a lower fuel rate and higher productivity in the blast furnace (BF).
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