超声强化单宁锗硫酸净化:超声空化气泡运动影响规律研究
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1.云南驰宏锌锗股份有限公司;2.昆明理工大学 冶金与能源工程学院

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Ultrasound-Enhanced Purification of Tannin-Germanium via Sulfuric Acid: Mechanistic Study of Ultrasonic Cavitation Bubble Dynamics
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1.Yunnan Chihong Zn Ge CO,LTD;2.Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology

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    摘要:

    随着国际局势变化及全球矿产资源短缺,全球锗供应缺口逐渐扩大,提高锗资源高效利用对于保障我国人民及国防安全具有重大意义。单宁锗的净化决定锗精矿的品味。本研究在超声协同硫酸净化单宁锗研究的基础上,通过构建超声空化气泡模型,研究在单宁锗净化过程中超声空化气泡运动的影响规律,旨在为单宁锗超声净化领域的研究提供理论指导。通过考察超声声压幅值和超声频率对于空化气泡运动的影响,确定了在单宁锗净化过程中最佳的超声条件为:超声换能器的频率在23 kHz,控制体系中声压幅值在1.4~1.6 bar范围内。单宁锗中杂质Zn净化对照试验显示,同等净化条件下,超声功率225 W、超声频率23 kHz、声压幅值1.5 bar,单宁锗中的杂质Zn净化率提高至84.93%,增加了3.1%,超声的引入可有效提高单宁锗的净化效果。

    Abstract:

    Amid evolving international dynamics and global mineral resource shortages, the widening supply gap for germanium underscores the critical importance of enhancing its efficient utilization to ensure China"s civilian and defense security. The purification of tannin-germanium crucially determines the grade of germanium concentrate. Building on previous studies of ultrasound-assisted sulfuric acid purification, this research investigates ultrasonic cavitation bubble dynamics during tannin-germanium purification through computational modeling, establishing theoretical guidelines for optimized processes. Systematic analysis of ultrasonic pressure amplitude (1.4-1.6 bar) and frequency (23 kHz transducer) revealed optimal cavitation conditions, with comparative experiments demonstrating that ultrasound application (225 W power, 23 kHz frequency, 1.5 bar pressure) increased zinc impurity removal efficiency to 84.93% – a 3.1% enhancement over conventional methods. These findings quantitatively validate ultrasound"s efficacy in improving tannin-germanium purification, providing both mechanistic insights and practical operational parameters for industrial refinement processes.

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陆占清,范茂盛,杨荣净,杨坤,裴启飞.超声强化单宁锗硫酸净化:超声空化气泡运动影响规律研究[J].矿冶,2025,34(3):.

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  • 收稿日期:2025-05-21
  • 最后修改日期:2025-05-21
  • 录用日期:2025-05-28
  • 在线发布日期:2025-08-05
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