85t钢包炉底吹氩水模拟研究

Water Modeling Bottom Argon Blowing for 85 t Ladle Furnace

以某钢铁厂85 t钢包为原型,依据相似原理建立钢包的物理模拟体系,通过模拟钢包底吹氩工艺,测定不同吹气位置在不同吹气量下的钢包混匀时间,从而确定钢包透气砖最佳位置和最佳底吹气量。结果表明,原型单吹效果不理想,双吹效果适中;单个底吹透气砖最佳位置为0.5R处,底吹气量为300~350 L/min;双透气砖最佳位置为0.5R处,夹角90°,底吹气量为350 L/min。

On the basis of similarity theory,a physical simulation system for 85 t ladle furnace had been established to simulate ladle bottom argon blowing process. The required mixing time for various position at different flow rate had been measured in order to determine the optimal location of bottom gas permeable brick and the optimal flow rate of ladle blowing. Simulation results indicated that the prototype single blowing had not achieved as- expected effect while double blowing produced a moderate effect. The optimal position of gas permeable brick was at the position of 0. 5R and the gas flux was controlled in range of300 ~ 350 L /min for single hole blowing,while. The best position of gas permeable brick was at 0. 5R,with the angle of 90°,and the best blowing gas flux controlled at 350 L /min for two holes blowing.