Development of LF-software for modeling of rifining processes in a ladle -furnace

Abstract

The modern production technology’s of steel is based on the production of metal with narrow intervals of chemical composition, alloying elements and decreasing contents of non metallic inclusions. Mathematical models help to carrying out the process along the optimal way with minimal energy and material costs, reducing emissions. That allows to optimize production technologies, to provide a reduction the cost of steel, high production stability. An original mathematical model for the dynamic simulating of steel treatment technology has been developed. Physical and chemical models based on the law of conservation of mass and energy, as well as the principles of non equilibrium thermodynamics were used. All the stages of the process (zones) were taken into consideration in this software. This software takes into account input data such as: ladle equipment facilities, initial temperatures of slag and metal mass and chemical compositions, input time and mass of additives, blowing, electrical and time regimes, thermodynamic database, thermal, physical and chemical databases for additives and inert gas, production database (for statistics). For validation of the software, the results of ladle treatment of real heats of steel and sampling control results were used.