Abstract
It was expected that the desulfurization is improved by flux injection into the burner flame of RH multi function burner lance, because of melting of flux by burner. The desulfurization of 100 ton RH was experimented by RH multi function burner lance with flux.
Sulfurization constant Ksis related to top slag (T.Fe+MnO) as follows
Ks =0.04 × {(T.Fe+MnO)-2} (T.Fe+MnO) ≥2
Ks=0 0≤(T.Fe+MnO) ≤2
Desulfurization constant Kds with flux by burner carrier is larger than that by argon gas carrier.
In case of burner condition, the concentration of sulfur of flux in molten steel is high and it is supposed the evidence of flux melted.
