一、绪言近年来,采用离子交换树脂捕收提取水溶液中的离子,进而将此种树脂浮选以回收目的离子的研究正在进行,据报道在美国已进入了实际应用研究的阶段。这种技术既具有离子交换树脂的特点,即能捕收用其他方法所难于回收的低浓度离子,并有用浮选方法在短时间内回收大量固体的特点。因此,将来有可能应用于选矿、冶炼等方面的废水处理或湿法冶炼。但在这种技术操作过程中,如考虑到离子交换树脂浮选在浮选机内的搅拌损失以及提取 I. INTRODUCTION In recent years, ion exchange resins have been used to collect and extract ions in aqueous solution, and flotation of such resins to recover ions of interest has been carried out. It has been reported that it has entered the stage of practical application research in the United States. This technology combines the characteristics of ion exchange resins with the ability to trap low levels of ions that are otherwise difficult to recover and to recover large amounts of solids in a short period of time by flotation. Therefore, the future may be applied to the beneficiation, smelting and other aspects of wastewater treatment or hydrometallurgy. However, during this technical operation, for example, considering the agitation loss of the ion exchange resin flotation in the flotation machine and the extraction