摘要
研究表明，实验条件下向钢液中加入纯铋时铋的收得率为７．５４％。钢液中铋的挥发过程受液／气界面的挥发反应及液相边界层中的扩散混合控制，其传质系数Ｋ（２３）在１０－２ｃｍ／ｓ数量级；实验得出了Ｋ（２３）值及钢液中铋浓度的经验计算公式；
The result shows that the rate of bismuth recovery reachs 7.54% by adding pure bismuth to liquid steel under the experimental condition.The evaporation process of trace bismuth is contrlled by transport in both the metal boundary layer and the evaporation from the pool surface, in which the transport coefficient K23 is at the order magnitute of 10-2cm/s.The experimental formulas to calculate K23 and bismuth concentration in molten steel have been gained.The effect of covering slag on bismuth evaporation has also been studied.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1994年第6期522-526,共5页
Journal of University of Science and Technology Beijing
关键词
挥发
微量元素
真空熔炼
镍铬钼钢
evaporation
trace elements
vacuum melting
nickel chrominium molybdenum steel
