THERMODYNAMIC ANALYSIS OF THE TECHNOLOGICAL OPERATION OF CAST IRON REFINING WITH A MIXTURE OF OXIDE COMPONENTS OF THE CaO-FeO-Na2CO3 SYSTEM

At present, at the metallurgical plants of Ukraine, a charge with an unstable chemical composition is used, which leads to significant fluctuations in temperature, content sulfur, silicon cast iron and decrease technical economic indicators further process production iron-carbon semi-products. The application standard technology step-by-step multi-stage refining from phosphorus increasemelting cycle, reduces converter melting. Therefore, studies processes one-stage removal sulfur liquid are relevant for development recommendations reagents complex treatment before steelmaking processing. purpose work clarify features physicochemical transformations occurring volume when mixture CaO-FeO-Na2CO3 system injected carrier gas supplied jet. Information on interaction melt components oxidation products formed zone action jet was summarized, dependence lgKp temperature constructed possible reactions transformationsA thermodynamic analysis carried out due injection using different gases. It has been established that mainly take place direct impact gas-powder melt, dioxin same time effectively bound into dicalcium silicate. Removal proceeds directly elements influence based desulfurization soda presence high concentrations melt.