氧枪射流对转炉内钢液喷溅行为的影响研究

Effect of Jet Flow of Oxygen Lance on the Molten Steel Splashing in Converter

摘要: 氧枪射流作用下的喷溅钢液对转炉炉衬的冲刷是造成炉衬耐火材料损蚀的重要原因。本文以200t顶底复吹转炉为原型，依据相似理论，在相似比为1:12的有机玻璃转炉模型中进行模拟实验，研究了氧枪射流工艺条件(枪位及顶吹气体流量)对钢液熔池冲击坑形貌的影响，采用试管收集法研究了喷溅液滴在转炉炉壁上的分布规律，分析了炉衬不同部位的物理冲刷情况。

Abstract: The converter lining is scoured by the molten steel splashing triggered by the jet flow of oxygen lance, which is the key reason of the refractory corrosion and damage. A physical simulation ex-periment was carried out aiming at simulating a converter with the molten steel volume of 200 t. The physical model was prepared with a geometric similarity ratio of 1:12 and dynamic similarity referring to the modified Froude number. The impacting pit shape on the surface of the molten bath was observed, and the splashing distribution on the converter wall was investigated using the tube collecting method under the different technological conditions. The scouring extent in different position of the furnace wall was analyzed according to the splashing distribution.