Establish And Optimizing Of The Argon Model For Ladle Furnace

In ladle furnace, Bottom-Argon-Blowing(BAB) system is the key device which can achieve the quick reaction between steel and slag meanwhile accelerate the transfer process, making the molten steel temperature and chemical compositions distributed even remove the gas and nonmetallic materials, and improve the quality of molten steel, thus it is widely used in the refining process.The current BAB technique still has some issues, one of them is the optimum parameters of each stage is difficult to determine. This paper based on the analysis of the physical process of BAB, and then established a mathematical model including argon flow, mixing time, the reaction rate, removal efficiency and liquid inclusions bump height and other factors, proved and analyzed both in theory and in experiments. Then based on these models, according some traditional process of blowing argon researches and analysis, ascertain using multi-objective optimization algorithm of different stages to optimize the regulation of blowing argon, finally get the ideal curve argon refining furnace.Take a steel company's 60t LF as example. The simulation results of argon curve show: in the case of the electrode is less affected, comparing with the original system of argon, the method showed in this paper can be reduced argon consumption, shorten the refining time, guiding significance for practical application.