连铸中间包水口堵塞机理及防止措施  

Mechanism and preventive measures of tundish nozzle clogging in continuous casting

作　　者：佟志芳[1] 王飞鹏[1] 乔家龙 罗丽华[1] 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2016年第5期13-20,共8页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51174100;51564017);江西省自然科学基金资助项目(2010GZC0058)

摘　　要：介绍了连铸中间包水口堵塞的主要类型,总结分析国内外关于Al2O3黏附堵塞的机理及其防止措施的研究现状,并讨论防止水口堵塞措施的研究方向.针对水口堵塞问题,国内外开展了多方面防止水口堵塞措施的研究,取得了一定的效果,但水口堵塞问题仍未得到彻底解决.前人的研究结果表明,改进水口材质是可能从根本上解决水口堵塞的方法.目前,单一材质已不能满足连铸发展的要求,多样化、复合化是水口材质的发展趋势,其中碱性的尖晶石材料和低浸润材料将是重要的方向.夹杂物向水口内壁传递是水口堵塞的控制性环节,由于钢液高温不可见,目前多采用数值模拟方法进行研究.基于EDEM-FLUENT耦合的模拟方式可以更客观地描述夹杂物颗粒传递过程和考虑颗粒间的相互作用,将是数值模拟研究高熔点质点黏附机理的一个重要方向.Based on introducing the main types of tundish nozzle clogging in continuous casting, the mechanism of Al2O3 adhesion, and research status of preventive measures were analyzed. The previous researches show that improving nozzle material might provide a good solution to the tundish nozzle clogging.For single material nozzle fails to meet the demands of continuous casting, diverse and complex materials, in particular, alkaline spinel materials and low infiltration materials, are important development tendency. The control link of nozzle clogging is the inclusion transmitted to the inner wall of the nozzle. Due to the invisible high temperature liquid steel, numerical simulation method has been applied. The simulation method based on EDEM-FLUENT coupling can objectively describe the flow behavior of liquid steel and inclusion particle movement. Therefore, it is expected to be a promising research direction for simulating the mechanism of high melting particle adhesion.

关 键 词：连铸 中间包水口 堵塞 夹杂物 Al2O3黏附 

分 类 号：TF777[冶金工程—钢铁冶金]