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；还探讨了熔渣覆盖对钢液中铋挥发的影响 The results show that the yield of bismuth is 7.54% when pure bismuth is added to the molten steel under the experimental conditions. The volatilization of bismuth in molten steel is controlled by the volatilization reaction of the liquid / gas interface and the diffusion mixing in the liquid boundary layer, and the mass transfer coefficient K (23) is in the order of 10-2cm / s. The K (23) Value and liquid steel bismuth concentration empirical formula; also discussed the impact of slag coverage of molten steel bismuth volatilization