用N235从低浓度硫酸溶液中萃取锗试验研究

发布时间：2018-04-19 16:34

  本文选题：N + 锗　； 参考：《湿法冶金》2017年05期

【摘要】：研究了采用N235从低浓度硫酸溶液中萃取回收锗,考察了酒石酸用量、有机相组成、相比(VO/VA)、温度、接触时间、料液pH对锗萃取率的影响,也考察了反萃取剂浓度、相比(VO/VA)、接触时间、温度对锗反萃取率的影响,并绘制了反萃取等温线。试验结果表明:在有机相组成为20%N235+10%TBP+70%磺化煤油、相比VO/VA=1/2、温度25℃、萃取时间10min、料液pH=1.5、n(酒石酸)/n(锗)=5条件下,锗萃取率达97.15%,锌、铜、铁萃取率分别为1.31%、0.26%、0.11%;负载锗的有机相用NaOH溶液(浓度为2mol/L)在相比VO/VA=7∶r1、接触时间10min、温度45℃条件下经3级逆流反萃取,锗反萃取率达99.73%,反萃取液中锗质量浓度为1.64g/L,锗富集近14倍。
[Abstract]:The extraction and recovery of germanium from low concentration sulfuric acid solution with N235 were studied. The effects of the amount of tartaric acid, organic phase composition, temperature, contact time, contact time, pH value of feed liquid on the extraction rate of germanium were investigated.The influence of contact time and temperature on the stripping rate of germanium was compared with that of VAO / V, and the counterextraction isotherm was drawn.The results show that under the conditions of organic phase composition of 20%N235 10%TBP 70% sulfonated kerosene, temperature 25 鈩，

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