The pulsed disc and doughnut extraction column (PDDC) has emerged as an efficient equipment in the field of hydrometallurgy. This work is concerned with determining the statistically significant process parameters and their mutual interaction in relation to the hydrodynamics of a PDDC. Pulsation intensity, %duty cycle, total throughput and organic to aqueous ratio are selected as the process variables. By the Analysis of Variance and the Student’s t test, Pulsation intensity has been identified as the most important parameter in the dispersion regime. %Duty cycle turns out to be a statistically significant process parameter. The mutual interaction between total throughput with pulsation intensity is found to be most influential on the dispersed phase holdup in the dispersion regime. It has been found that the dispersed holdup data is normally distributed. Based on the data, a linear regression model was fitted for the dispersion with an adjusted R2 of 0.983.

中文翻译：

---

工艺参数的相对重要性及其相互作用对脉冲圆盘和甜甜圈柱的流体动力学

脉冲圆盘和甜甜圈萃取塔（PDDC）已成为湿法冶金领域的一种高效设备。这项工作涉及确定具有统计意义的过程参数及其与 PDDC 流体动力学相关的相互作用。脉冲强度、占空比百分比、总产量和有机水比被选为工艺变量。通过方差分析和学生 t 检验，脉动强度已被确定为分散状态中最重要的参数。结果表明，占空比是一个具有统计意义的过程参数。发现总通量与脉动强度之间的相互作用对分散状态中的分散相滞留量影响最大。已经发现分散的滞留数据是正态分布的。基于数据，线性回归模型被拟合为具有 0.983 的调整 R2 的分散。