工程科学学报2011，Vol.33Issue(5)：539-543,5.
带过滤器中间包钢水内夹杂物行为的非稳态模拟
Transient simulation on the behavior of inclusions in liquid steel of the tundish with a filter
摘要
Abstract
The movement tracks of inclusions in liquid steel in the tundish with a filter and the inclusion removal rate during continuous casting were studied by numerical simulations through constructing a multiphase flow model. This model was testified by sampiing at the inlet and outlet of the tundish during continuous casting in a steel mill. Afterward the samples were investigated by bulksample-electrolysis to get the proportion of inclusions in liquid steel, and the effect of casting process on the inclusion removal rate was analyzed. It is shown that the velocity of inclusions decreases due to filtering, and the residence time of inclusions in the tundish prolongs, leading to an increase in the probability of inclusion removal, so filters can increase the inclusion removal rate. Fluctuations in inclusion removal rate are found when the diameter of inclusions is less than 80μm, however the fluctuations are not so severely for inclusions whose diameter is more than 100μm. There occurs even the increasing of inclusions at the outlet when the diameter of inclusions is less than 20μm during the later period of casting. The inclusion removal is a transient process.关键词
连铸/过滤器/夹杂物/计算机模拟/瞬态分析Key words
continuous casting/ filters/ inclusions/ computer simulation/ transient analysis分类
矿业与冶金引用本文复制引用
赵新宇,张炯明,吴苏州,胡波..带过滤器中间包钢水内夹杂物行为的非稳态模拟[J].工程科学学报,2011,33(5):539-543,5.基金项目
国家自然科学基金资助项目(No.51074022) （No.51074022）
