Treating the liquid steel with synthetic slag in the casting ladle

摘要

Treating the liquid steel with synthetic slag in the casting ladle is an efficient and relatively cheap method of reducing the non-metal inclusion content by reducing the sulphur and oxygen contents. The synthetic slag used in the experiments corresponds to the CaO-Al_2O, system, which ensures, by their composition, the extraction of sulphur and oxygen from the liquid steel, based on Nernst's repartition law, and have a density and fluidity that ensure the efficiency of their separation compared to the metal bath. The method also has the advantage of being applicable in all the processing technologies (EAF, BOF, and so on). The paper presents the results and conclusions of the laboratory experiments regarding treatment of steel with various composition synthetic slags. The experiments were conducted using a Tamman furnace at the Hunedoara Engineering Faculty.