二十多年前,国内外对金属元素的溶剂萃取方面,主要是对有关单个元素或同一系元素间相互分离的研究,并且大都以稀有元素为研究对象。有关从矿石中提取金属,多是结合初步的沉淀进行的。近年来,由于萃取剂、稀释剂以及多组分萃取剂体系的不断发展和化工设备 Twenty years ago, the domestic and international solvent extraction of metal elements mainly focused on the separation of individual elements or the same series of elements, and most of them focused on rare elements. The extraction of metals from the ore, mostly in combination with preliminary precipitation. In recent years, due to the continuous development of extraction solvents, thinners and multi-component extractant systems and chemical equipment