Inverse-utilization of impurities
* Slag and molten steel compositions
* Melting, De-oxidization
* Inclusions control

Si-Mn-O Slag-Metal for Deoxidization (ThermoCalc, Database: IRSID)
Metal	Slag
Initial: Mn: 2mass%, Si: 1maqss%, O:0.2mass%, C:0.1mass%, P:0.1mass%
* Dephosphorization has not been preformed effectively. * Good deoxidization and P-preservation at lower processing temperature.