Flow field research on bottom argon blowing in a 40 ton ladle

作     者：ZHOU Tongjun LIU Junzhan LUO Hui 

作者机构：Baosteel Special Steel Co.Ltd. 

出 版 物：《Baosteel Technical Research》 (宝钢技术研究（英文版）)

年 卷 期：2016年第10卷第3期

页      面：21-27页

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 

主　　题：numerical simulation ladle slag eye mixing time 

摘      要：In order to improve argon blowing efficiency in a 40 ton ladle, numerical simulation and water simulation experiments of the bottom argon flow were performed. Relationships among the ladle mixing time, slag eye area, different blowing flow rates, and different blowing positions （0,0.56R, 0. 62R, 0. 67R） are discussed. Results showed that the ladle mixing time decreased when the argon blowing brick distance （from bottom center of the ladle） increased, and decreased significantly when the blowing flow increased from 70 to 130 L/h. When the blowing flow increased and exceeded 130 L/h,the stirring effect tended to be stable, and there was little effect on the ladle mixing time. The slag eye area increased as the argon brick distance increased, and was larger when the argon blow brick was near the ladle wall. Wall shear stress significantly increased as the brick distance increased and was concentrated at the slag wall near the argon flow brick;this is called the most serious erosion wall. The average wall shear increased exponentially with increasing argon blowing brick distance.