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针对现有锗萃取剂的弊端,采用HBL101从高浓度硫酸体系中萃取锗,分别考察了料液酸度、萃取剂浓度、时间、相比、温度等因素对锗萃取及反萃的影响并绘制出等温线。结果表明,在最佳条件下,采用体积分数为15%的HBL101+磺化煤油作为有机相(相比O/A=1∶1),经过4级逆流萃取,锗萃取率可达到98.32%;负载有机相用150g/L NaOH溶液反萃(相比O/A=8∶1),经过6级逆流反萃,锗反萃率达98%以上。
In view of the drawbacks of existing germanium extractants, HBL101 was used to extract germanium from high-concentration sulfuric acid system. The effects of feed acidity, extractant concentration, time, phase, temperature and other factors on extraction and stripping of germanium were investigated and plotted Isotherm. The results show that under the optimal conditions, HBL101 + sulfonated kerosene with volume fraction of 15% is used as the organic phase (compared with O / A = 1: 1), the extraction rate of germanium can reach 98.32% The organic phase was stripped with 150 g / L NaOH solution (compared to O / A = 8: 1). After 6 countercurrent stripping, the stripping ratio of germanium reached more than 98%.