从矿石提取铂族金属,将其精制到所要求的很高纯度,以应多方面的使用,需要大量复杂的操作过程。现在,从铂族混合液中,产出单一铂族金属的最终精制过程,是用选择沉淀来实现,然而,就分离程度而论,其效率是低的。一种改进的方法——液—液萃取法,已发展到中间工场阶段。本文在此法分离的基础上,着重谈某些化学及操作的原理。 The extraction of platinum group metals from ores, refining them to the very high purity required for their versatility requires a large number of complicated processes. Now, the final refining of the single platinum group metal from the platinum group mixture is accomplished by selective precipitation, however, the efficiency is low in terms of degree of separation. An improved method, liquid-liquid extraction, has been developed to the intermediate workshop stage. Based on the separation of this method, this article focuses on some of the principles of chemistry and operation.