Simulation Analysis of Influence of Argon Gas Injection Hole Position on Flow Field in Steel Ladle

Analysis of the effect of argon bottom blowing on stirring and refining in a ladle was carried out using numerical simulation based on a 250-ton ladle. The flow field inside the ladle was calculated for different bottom-blowing hole angles and radial positions, and the influence of the distance between the bottom-blowing holes and refining effect was investigated. The results indicate that as the bottom-blowing flow rate increases, the rate of change in the dead zone inside the ladle gradually decreases and drops sharply at 950 L/min. When the angle between the two bottom-blowing holes increases from 90° to 180 ° under the same bottom-blowing flow rate, the maximum velocity at the steel-liquid interface decreases and the average flow velocity of the steel liquid increases. When the bottom-blowing aperture is at a position of r/R = 0.5, the stirring effect of the steel liquid is good, and when r/R = 0.67 is arranged. When the spacing ratio is constant, the relative position changes, and the bottom-blowing effect hardly changes. When the spacing ratio increases from 0.707 to 1, the mixing effect of the steel liquid improves, and the refining effect of the steel-liquid interface decreases.