Development of Environmentally-friendly Steelmaking Process by Zero-slag Operation in BOF

摘要

For ultimate saving of both resource and energy consumption such as minimization of steelmaking slag, in fluence of silicon content to hot metal dephosphorization had been investigated and the investigation made it clear that reducing silicon content significantly increased CaO efficiency. Based on the results, NKK installed hot metal desiliconization station to control phosphorus content in hot metal under the final product specification. This process is called "Zero Slag Process" as it enables to ignore slag generation in BOF.