Evaluation of the Efficiency of Application of High-Basic Boron-Containing Slags in Melting of Economically Alloyed Boron-Containing Steels

Resumo

We present the results of investigation of the influence of boron-containing admixtures on the physical properties (viscosity and melting point) and the desulfurizing ability of ladle slags in the process of treatment of steel in ladle–furnace facilities. It is shown that the introduction of В2О3 in amounts of up to 4% in high-basic high-alumina slags significantly extends the range of their homogeneous liquid state and guarantees a high degree of desulfurization and microalloying of the metal with boron (0.001–0.004%).