ABSTRACT The effects of natural and forced convection on mass transfer were investigated, especially the composition-dependent material properties were used. Under natural convection, the stationary specimen became a cone. The mass transfer coefficient increased from 3.14 × 10−5 to 5.31 × 10−5 m s−1 at the temperatures of 1300–1450°C. The empirical formulas Sh = 0.144(GrSc)0.325 and k = M(Δρ)0.325(L)−0.025 were found within the ranges of 1 × 108 < GrSc < 5 × 108. Under forced convection, the rotating scrap cylinder became an irregular spiral. When the rotational speed changed from 141 to 423 r min−1, the mass transfer coefficients were 7.50 × 10−5–1.72 × 10−4 m s−1 at the temperatures of 1300-1400°C. The empirical formulas JD = 0.133(Re)−0.356 and k = M(n)0.644(L)0.288 were obtained within the ranges of 1000 < Re < 4000.

中文翻译：

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炼钢过程中废钢熔炼传质实验研究

摘要 研究了自然对流和强制对流对传质的影响，特别是使用了与成分相关的材料特性。在自然对流下，静止的标本变成了一个圆锥体。在 1300-1450°C 的温度下，传质系数从 3.14 × 10-5 增加到 5.31 × 10-5 m s-1。在 1 × 108 < GrSc < 5 × 108 范围内发现经验公式 Sh = 0.144(GrSc)0.325 和 k = M(Δρ)0.325(L)−0.025。螺旋。当转速从 141 变为 423 r min-1 时，在 1300-1400°C 的温度下，传质系数为 7.50 × 10-5-1.72 × 10-4 m s-1。在 1000 < Re < 4000 的范围内获得经验公式 JD = 0.133(Re)-0.356 和 k = M(n)0.644(L)0.288。