铟反萃液净化除杂试验研究

以株冶高铋、高锡反萃液为原料,在实验室开展了氧化中和、中和硫化和先中和再用锌粉等净化除杂试验研究。试验结果表明,采用先中和再用锌粉净化除杂工艺,铟反萃液中杂质铋、锡的脱除率分别在99.40%和94%以上,由除杂后反萃液置换所得粗铟含铟在99%以上,为粗铟电解精炼创造了条件。扩试结果也表明,铟反萃液中和再用锌粉净化除杂工艺对提高铟产品质量非常有效,具有很好的应用前景。

Experimental Study on Purifying of Indium Stripping Solution

Using high Bi and Sn stripping solution produced in Zhuzhou Smelter Group as main raw material, experimental study on oxidation-neutralization reaction, neutralization-sulfidation reaction, neutralization then add zinc powder reaction was carried out. The results show that：using first neutralization reaction then use of zinc impurity purification process, the desulphurization rate of Bi, Sn in stripping solution was 99.40% and 94% respec- tively. The crude In achieved from the stripping solution by replacement has more than 99% In, which created conditions for the electrolysis of it. Extended trial results indicate that purifying indium stripping solution with neutralization using zinc powder is very effective, and have a good application prospect.