在含锗铅锌烟尘的湿法冶金中,国内外大多采用丹宁沉淀法分离锗。该法虽然锗的沉淀效率尚好,但焙烧或蒸馏锗的损失大,锗实收率低而且影响锌电解电流效率低(60～75％),还有丹宁供应较缺。因此,近年来不少研究工作者致力于应用离子交换法分离锗的探讨。 In the hydrometallurgy containing germanium lead-zinc dust, most of the domestic and foreign separation of germanium using tannin precipitation. Although the deposition efficiency of germanium is still good, the loss of roasting or distilling germanium is large, the recovery rate of germanium is low, the efficiency of zinc electrolysis current is low (60-75%), and the supply of tannin is scarce. Therefore, in recent years, many researchers devoted to the application of ion exchange separation of germanium.