2003•Cailiao yu yejin xuebaoRequires access

Study of optimal composition of premelted refining slag in ladle furnace (LF)

Jiang Gui-lian

Abstract

The composition of premelted refining slag of the system CaO-Al2O3-MgO-BaO-SiO2 used in LF is experimentally optimized. The optimized refining slag has low melting point, low viscosity, high desulphurization capacity. The influences of slag basicity, Al2O3 and CaF2 contents on the melting point and viscosity of the slag have been examined. The melting point of slag doesn' t increase dramatically with the increase of MgO. The optimum has been applied on a LF in Tianjin Steel Tube Co. with good effect. The average desulphurization officency has increased from 71% to 89%.

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Key concepts: Slag (welding), Refining (metallurgy), Ladle, Metallurgy, Materials science, Melting point, Viscosity, Composition (language)