论文部分内容阅读
钢液中微小夹杂物在连铸节奏时间内通过浮力自然上浮难以去除,利用高速流动的钢液将气体打碎成小气泡是去除钢液中微小夹杂物的一种可选措施。综述了钢包长水口内小气泡形成的研究现状及存在的问题,并利用化工领域对气泡在湍流液体中破碎与合并的相关研究成果,将其用于分析长水口内小气泡的形成过程。指出了最初气泡在长水口内高湍流区停留时间短是制约长水口内小气泡形成的主要因素,并对长水口内小气泡形成的控制方法进行了展望。
Small inclusions in liquid steel can not be removed naturally by buoyancy during continuous casting temporally. Using high-speed flowing molten steel to break gas into small bubbles is an optional measure to remove tiny inclusions in molten steel. In this paper, the research status and existing problems of small bubbles formation in the ladle shunts are reviewed. Based on the relevant research results in the field of chemical engineering, bubbles are broken up and merged in the turbulent liquid, which is used to analyze the formation of small bubbles in the long nozzle. It is pointed out that the short residence time of the first bubble in the high turbulence zone in the shroud is the main factor that restricts the formation of small bubbles in the shroud and the control method of the formation of small bubbles in the shroud is forecasted.