工程科学学报2016，Vol.38Issue(5)：630-636,7.DOI:10.13374/j.issn2095-9389.2016.05.006
钢液/（N2、H2）过饱和体系中气泡生长的数值分析
Numerical analysis of bubble growth in a molten steel/(N2,H2) supersaturation system
摘要
Abstract
A water/carbon dioxide system was used to study bubble growth dynamics in a molten steel/( N2 ,H2 ) supersaturation system. Bubble nucleation and growth mechanism models in the aqueous solution and the molten steel were respectively established. Bubble growth dynamics in the water/carbon dioxide system and the molten steel/( N2 ,H2 ) system was studied based on three different kinds of bubble growth mathematical models. Water modeling experimental data were used to validate the mathematical models. The influences of preprocessing pressure, post-processing pressure and the depth of molten steel on bubble growth were analyzed in the molten steel/( N2 ,H2 ) system. It is found that when using the technology of inclusion removal by bubble flotation, preprocessing pres-sure has significant effect on the bubble growth. However, post-processing pressure blocks the bubble growth, and with increasing post-processing pressure, the influence gradually strengthens. The depth of molten steel has retarding effect on the bubble growth, and with the increasing of the depth of molten steel, the influence gradually weakens. Compared with nitrogen bubbles, hydrogen bubbles in molten steel grow faster.关键词
炼钢/钢液/气泡/气泡生长/数值分析Key words
steelmaking/molten steel/bubbles/bubble growth/numerical analysis分类
矿业与冶金引用本文复制引用
刘建华,李康伟,沈少波,刘洪波,季益龙,刘建..钢液/（N2、H2）过饱和体系中气泡生长的数值分析[J].工程科学学报,2016,38(5):630-636,7.基金项目
国家自然科学基金资助项目(51374023) （51374023）
中央高校基本科研业务费资助项目(FRF-IC-15-001) （FRF-IC-15-001）
