本文讨论湿法冶金中多级过程的计算,重点在多级逆流洗涤,也涉及溶剂萃取及溶液蒸馏等问题。前面讨论理想过程,后面讨论实际过程。导出了各类逆流洗涤过程中工艺损失、洗涤效率与各参数间的关系式。 对于偏离理想条件较远的实际过程,介绍了一种图解计算法。文后附有计算举例。 This article discusses the calculation of multistage processes in hydrometallurgy, with a focus on multi-stage counter-current washing, as well as solvent extraction and solution distillation. The ideal process is discussed earlier, and the actual process is discussed later. The relationship between process loss, washing efficiency and various parameters was derived for various countercurrent washing processes. For the actual process far from the ideal conditions, a graphical method is introduced. Text attached to the calculation example.