Method for reducing and leaching germanium in germanium-containing zinc oxide smoke dust by hydrazine sulfate

The invention relates to a method for reducing and leaching germanium in germanium-containing zinc oxide smoke dust through hydrazine sulfate, and belongs to the technical field of hydrometallurgy. Hydrazine sulfate is used as a reducing agent for leaching germanium from zinc oxide smoke dust, and t...

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Bibliographische Detailangaben
Hauptverfasser: ZHANG QI, ZHANG LIBO, JIANG GUIYU, CAI WUCHEN, XU YINGJIE, XIA HONGYING, SHIN CHUN-BOK
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention relates to a method for reducing and leaching germanium in germanium-containing zinc oxide smoke dust through hydrazine sulfate, and belongs to the technical field of hydrometallurgy. Hydrazine sulfate is used as a reducing agent for leaching germanium from zinc oxide smoke dust, and the leaching rate of germanium can be remarkably increased by controlling the acidity, the liquid-solid ratio and the using amount of the reducing agent in the leaching process; leaching is completed under the ultrasonic synergistic effect, the leaching rate is further increased, and the leaching time is further shortened; according to the method, the leaching rate is high, the quantity of leached residues is small, the defect that the leaching rate is low due to the fact that tetravalent germanium replaces ferric ions and enters crystal lattices of zinc ferrite is obviously overcome, meanwhile, the method is harmless to other valuable metal extracted in the follow-up process, and the final leaching rate of germaniu