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NIE Zhen, ZHANG Yongsheng, BU Lingzhong, HUANG Weinong, ZHENG Mianping. 2005: Experimental study on concentration of winter brines in Zabuye Salt Lake, Tibet. Geological Bulletin of China, 24(4): 386-390. DOI: 10.12097/gbc.20050475
Citation: NIE Zhen, ZHANG Yongsheng, BU Lingzhong, HUANG Weinong, ZHENG Mianping. 2005: Experimental study on concentration of winter brines in Zabuye Salt Lake, Tibet. Geological Bulletin of China, 24(4): 386-390. DOI: 10.12097/gbc.20050475
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Experimental study on concentration of winter brines in Zabuye Salt Lake, Tibet

  • Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China,2. Key Laboratory of the Research of Saline Lake Resources and Environment,Chinese Academy of Geological Sciences,Beijing 100037,China,3. Tibet Zabuye High-Tech Lithium Industry Company Ltd.,Lhasa 850000,Tibet,China

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  • Revised Date: September 15, 2004
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  • Based on the local conditions, a new idea of combining the method of multi-level natural freezing-separation and natural solar evaporation-concentration is proposed to guide the experiment. The method fully uses the unique cold resources and solar resources on the Tibetan plateau. During the experiment, solid and liquid are separated after freezing of brines. The residual brines are subjected to solar evaporation and again frozen and separated, and this operation is repeated multiple times. The results of the experiment show that, after multi-level freezing and solar evaporation, the concentration of lithium ions in the brine goes up from 0.957 g/L at first to 7.97 g/L in the brines at last. This value is more than double the highest value of 2.8 g/L got by natural solar evaporation, and that the CO2-3 content decreases from 20.2% to 11-14%. This experiment makes it possible to provide good-quality brines for the large-scale extraction of Li2CO3 of industrial value and furnishes a scientific experimental basis for the establishment of a complete optimum technological process.
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