钢包长水口内小气泡形成的研究现状与展望

炼钢 ›› 2015, Vol. 31 ›› Issue (2): 67-72.

钢包长水口内小气泡形成的研究现状与展望

樊安源

（重庆大学材料科学与工程学院，重庆 400044）

收稿日期:2014-06-06 修回日期:2014-08-01 接受日期:1900-01-01 出版日期:2015-04-05 发布日期:2015-04-23
通讯作者: 樊安源 E-mail:565715476@qq.com

Present situation and prospect of fine gas bubbles formation in the ladle shroud

Received:2014-06-06 Revised:2014-08-01 Accepted:1900-01-01 Online:2015-04-05 Published:2015-04-23

摘要/Abstract

摘要： 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。

关键词: 钢包长水口, 小气泡, 破碎, 合并

Abstract: The small inclusions is hard to removal by buoyancy during continuous casting. The method of using highspeed liquid steel to break gas into fine gas bubbles to removal small inclusions in liquid steel is an alternative measure. Fine gas bubbles formation in the ladle and the existing problems was reviewed，and the formation process of small bubbles in the ladle shroud was analyed by the chemical industry’s relevant research results on bubble breakup and coalescence in turbulent liquid. It was found that the constriction of fine gas bubbles formation is the short residence time of initial bubble in the high turbulent region. At the same time, the method of controlling fine gas bubbles in the ladle shroud has been prospected.

Key words: ladle shroud, fine gas bubbles, breakup, coalescence

樊安源，文光华，李敬想，唐萍. 钢包长水口内小气泡形成的研究现状与展望[J]. 炼钢, 2015, 31(2): 67-72.