Abstract—

It is shown that n-fold refining of a host–impurity system at a rate V, separation factor K < 1, and final yield G by simple distillation or conventional directional solidification is more effective in terms of final product purity and throughput than is single-cycle refining at a rate v < V, a separation factor k < K < 1, and the same yield G if ≈ln k/ln K < n < V/v (where V and v are linear directional solidification rates or vaporization rates per unit surface area in the case of distillation).

中文翻译：

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多次蒸馏或结晶精炼的适用标准，而不是在预设的产量和产量下进行单循环精炼

摘要-

结果表明，通过简单蒸馏或常规定向凝固以速率V、分离因子K < 1 和最终收率G对主体杂质系统进行n 次精炼在最终产品纯度和产量方面比单次精炼更有效。以一定的速率-cycle精炼v < V，分离因子ķ < ķ <1，和相同的产率ģ如果≈ln ķ / LN ķ < ñ < V / v（其中，V和v 在蒸馏的情况下，是每单位表面积的线性定向凝固速率或蒸发速率）。