Effective distribution coefficient (k_e) plays an important role in zone melting purification but has never been systematically calculated as an important parameter. A novel analysis method for impurity separation separating from Al using determination of impurities (Si, Fe, Cu, Zn) content and calculation of k_e has been investigated. Experimental results show that the impurity separation effect was significantly improved due to the k_e closely approximating the equilibrium distribution coefficient (k₀) via optimization of purification times and speed of the melting zone. When the times of purification were increased from 15 to 20 times, the k_e values of Si, Fe, Cu, and Zn at the sample (No. 3) were 0.603, 0.702, 0.364, and 0.502, respectively. Correspondingly, the removal rate of impurities of Si, Fe, Cu, and Zn increased by 6.25%, 1%, 10.49%, and 27.58%, respectively. The effect on the k_e of Cu and Fe is more significant at the sample (No. 3) when the melting zone speed is changed. The removal rates of Fe and Cu in the sample are 99.0% and 94.75% when the melting zone speed was 1/3 mm/min, and, correspondingly, the removal rates of Si and Zn were 81.7% and 88.51%, respectively. The Al content at sample position No. 3 is more than 999994.59 ppm when the sample was purified 15 times at a speed of 0.5 mm/min, which meets the standard of 5N high purity aluminum.

有效分布系数（ķ _ê）起着区熔化纯化具有重要作用，但从未作为一个重要的参数被系统地计算。为杂质的分离使用的杂质（硅，铁，铜，锌）含量和计算确定距离Al分离了一种新的分析方法ķ _Ë进行了研究。实验结果表明，在杂质分离效果显著由于改善ķ _Ë密切近似平衡分配系数（ķ ₀经由的纯化时间优化和速度的熔化区的）。当纯化的时间从15到20倍，增加的ķ _È样品（No.3）的Si，Fe，Cu和Zn的值分别为0.603、0.702、0.364和0.502。相应地，Si，Fe，Cu和Zn的杂质去除率分别提高了6.25％，1％，10.49％和27.58％。上的效果ķ _Ë的Cu和Fe的是在样品（更显著第3号），当熔融区速度被改变。当熔融区速度为1 / 3mm / min时，样品中Fe和Cu的去除率分别为99.0％和94.75％，相应地，Si和Zn的去除率分别为81.7％和88.51％。当样品以0.5 mm / min的速度纯化15次后，第3号样品处的Al含量大于999994.59 ppm，符合5N高纯铝的标准。