Investigation of pyrometallurgical silicon slags

The smelted in electric arc furnaces silicon contains impurities which remove by oxidative refining in the ladle blowing air in industry. Due to the increasing demands to the melted silicon quality is necessary to search a new ways to decrease the impurities content, whose concentration in the final product is insignificant. According published data and industrial practices analysis the main components of the refining slag are calcium, aluminum and silicon oxides with silicon carbide inclusions and silicon. However, according different analysis types it was found the slag has a complex composition. And there is no The information about a possible mechanism of the inclusions formation in this product of pyrometallurgical process is absent. Therefore, the aim of our investigations was to develop thermodynamic technique of the oxide inclusions formation in the slag based on computer formation of ternary state diagram.