Abstract
In this paper, the germanium loss caused by Fe(OH)3 colloid adsorption in the process of zinc oxide dust neutralization leaching was studied by using simulated solution. By comparing the conventional method and ultrasonic method, it was found that ultrasonic method could reduce the germanium loss by 69.24%. Characterization analysis showed that ultrasound could reduce the redox potential of the reaction system and inhibit the formation of Fe(OH)3 colloid. Promote Fe(OH)3 colloid in leaching quickly agglomerate, centrifugal separation will not remain in the centrifuge, reduce the Fe(OH)3 colloid in the centrifuge continuous adsorption of germanium. The ultrasonic efflux and mechanical action can destroy the colloidal surface, stripping the germanium adsorbed by Fe(OH)3 colloid and reducing the loss of germanium. The ultrasonic inhibition technology adopted in this study is green and environmentally friendly, which is of great significance to the efficient extraction of germanium and the development of germanium industry.
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Funding
This work was supported by National Natural Science Foundation of China[grant number 51974141], Major Science and Technology Project of Yunnan Province [grant number 202202AB080005], Yunnan Fundamental Research Projects [202301AT070480], Yunnan Fundamental Research Projects [202101AT070280].
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Leiting Song: conceptualization, methodology, validation, formal analysis, investigation, writing–original draft, visualization. Ming Liang: methodology, formal analysis, writing–original draft, visualization. Yiner Zeng: conceptualization, methodology, validation, resources, writing–original draft, visualization, supervision. Jie Dai: methodology, validation, resources, visualization, supervision. Junchang Liu: methodology, formal analysis, resources. Kun Yang: conceptualization, methodology, resources, supervision, project administration, funding acquisition. Libo Zhang: conceptualization, methodology, resources, supervision, project administration, funding acquisition.
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Highlights
• Ultrasound can reduce the redox potential of the reaction system and inhibit the formation of Fe(OH)3.
• Ultrasound can promote the agglomeration of Fe(OH)3 colloid in the leaching process.
• Ultrasound can destroy the surface of Fe(OH)3 colloid and expand the pore volume and pore size of Fe(OH)3 colloid.
• The germanium adsorbed on the surface of Fe(OH)3 colloid can be stripped by ultrasound.
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Song, L., Liang, M., Zeng, Y. et al. Study on the mechanism of ultrasonic inhibition of germanium adsorption by Fe(OH)3 in the neutralization leaching section of zinc oxide dust. Colloid Polym Sci 301, 1185–1196 (2023). https://doi.org/10.1007/s00396-023-05136-8
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DOI: https://doi.org/10.1007/s00396-023-05136-8