Extraction Separation of Germanium with Hydroxamic Acid HGS98
来源期刊：中南大学学报(英文版)2000年第1期
论文作者：TANG Shu-fang ZHOU Chun-shan JIANG Xin-yu ZHAO Chun-lei
文章页码：40 - 42
Key words：extraction; separation; germanium; hydroxamic acid HGS98
Abstract: The extraction separation of germanium from indium raffinate in hydrometallurgical zinc process was discussed. The conditions and mechanism of the extractionwith hydroxamic acidHGS98 have been investigated in detail. The results showthat using 2% (mass fraction) hydroxamic acid HGS98 and 5% D2EHPA as synergist, germanium is extracted (1-stage) over 99% in 5 min at phase ratio (Vo∶Va) of 1∶5 from indium raffinate with original acidity. Then, using 2 mol·L-1 NH4F as strip liquor, the stripping recovery is over 98% in 15 min at phase ratio of 1∶1. This process has the following advantages:easy to operate, high recovery and selectivity, and lower investment cost. It provides a new way to recover rare metal-germanium from metallurgical spent residues.
