In fact, silicon aluminum barium calcium is a kind of barium alloy, mainly used as deoxidizer and desulfurizer in steelmaking. In addition, the oxygen content in steel can be reduced by putting appropriate amount of si, Al, barium and calcium into the steel, and the complex inclusions containing calcium, barium and aluminum formed in the deoxidation process are easy to float from the liquid iron. By purifying the liquid steel, the impact toughness and processing performance of steel can be improved.
As a deoxidizer for steelmaking, sial-Al-barium calcium has strong deoxidization performance and can significantly improve the purity of molten steel, etc., which has been widely concerned by many research institutions and iron and steel enterprises, and has become a hot spot in the field of deoxidizer research and development recently. Especially, the sial-Al-Barium calcium containing alkaline earth elements Ba and Ca is more active. Some steel mills have entered the industrial test or promotion stage, there is an essential process in the process of steel deoxidation, but in which, deoxidizer is particularly important.
From the perspective of the development of steel making in the past, pure aluminum was used in the early stage, and it was difficult for the aluminum cake to penetrate into the molten steel. The application of barium silicon aluminum in steel making limited the effective utilization rate of Al element. Si-al barium calcium can also be used with cast iron inoculants and nodular cast iron additives. At present, si - Ca - al can replace si - al - fe and si - al - barium alloys for final deoxidation.
