The effect of impeller speed and cell volume on batch coal flotation performance in a self-aerating flotation machine is studied in the present investigation. Factorial designed experiments are carried out to establish the relationships between the manipulated variables (impeller speed, and cell volume, and their interactions) with the separation indicators (yield, ash, combustible recovery and entrained water recovery). Correlation coefficient values are used to select the best fit model, and an analysis of variance to identify the statistically significant components of the model. The results indicated that both the impeller speed and cell volume significantly influence the performance of coal flotation. Further, the influence of these variables and their significance is discussed by flotation rate constant.

在本研究中，研究了叶轮速度和孔体积对自浮选机中分批浮选煤性能的影响。进行了析因设计的实验，以建立操纵变量（叶轮速度和池容积及其相互作用）与分离指标（产率，灰分，可燃物回收和夹带水回收）之间的关系。相关系数值用于选择最佳拟合模型，并使用方差分析来确定模型的统计上重要的组成部分。结果表明，叶轮速度和孔体积均显着影响煤浮选性能。此外，通过浮选速率常数讨论了这些变量的影响及其意义。