Numerical Simulation Of Argon Blowing In LF Ladle And Application Of Key Technology

In the context of strong demand for steel,steel mills continue to improve production efficiency,and develop high value-added products to enhance corporate profits.In order to seek the long-term development of enterprises and ensure the deep reform of the supply side,we must enhance the innovation ability and enhance the soft power of enterprises.Aiming at the problems of bottom blowing structure and argon blowing process of260 t ladle in a steel plant,ANSYS software was used to simulate the flow field of ladle.Although there are many numerical simulations for the flow field of ladle,the simulation results do not have direct migration due to different ladle structures.Therefore,it is of great significance to carry out numerical simulation research on flow field of 260 t ladle in a steel plant to improve smelting efficiency.Industrial pure iron is a product with high cost performance,which is widely used in aviation alloy auxiliary materials.Due to the high content of manganese and phosphorus in the hot metal used in a steel plant,it brings great challenges to develop the smelting process of industrial pure iron in a steel plant.Based on the particularity of high phosphorus content in hot metal of an enterprise and the desire to produce industrial pure iron with high efficiency,the whole dephosphorization process of converter LF was studied.The project aims to develop new production technology of industrial pure iron to produce high value-added products under the condition of high content of manganese and phosphorus in hot metal.The main conclusions are as follows:(1)Numerical calculation of flow field of ladle with 5 different bottom blow holes,The angle of argon blowing hole is 90°(r1=1/2 r,)at the end r2=2/3 r,the average velocity of molten steel is optimal and the percentage of dead zone is the smallest,For optimal bottom blowing location distribution,The proportion of dead area in this arrangement is lower than that in the original position;(2)under the original bottom blowing argon hole arrangement,The addition of alloy near the center of ladle is beneficial to alloy mixing;(3)stirring by using high oxidation,high alkalinity and lf alkalinity and argon blowing after the converter is out of steel,Dephosphorization in LF treatment,LF dephosphorization rate reached 84% during treatment,phosphorus content of molten steel can be controlled steadily below 0.005%,The mass production of industrial pure iron is realized.