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碳酸盐型卤水实验室模拟提锂和太阳池提锂的对比

余疆江1,2,4,郑绵平2,4,唐力君2,3,伍 倩2,4,乜 贞2,4,卜令忠2,4   

  1. 1成都理工大学核技术与自动化工程学院,四川 成都 610059;2中国地质科学院矿产资源研究所国土资源部盐湖资源与环境重点实验室,北京 100037;3中国地质科学院国家地质实验测试中心,北京 100037;4中国地质科学院盐湖与热水资源研究发展中心,北京 100037
  • 出版日期:2013-06-05 发布日期:2013-06-05

Comparative study of lithium extraction from the carbonate brine between solar pond and laboratory simulation experiment

YU Jiangjiang1,2,4,ZHENG Mianping2,4,TANG Lijun2,3,WU Qian2,4,NIE Zhen2,4,BU Lingzhong2,4   

  1. 1School of Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu 610059,Sichuan,China;2mLR Key Laboratory of Saline Lake Resources and Environments,Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;3National Research Center for Geoanalysis,Chinese Academy of Geological Sciences,Beijing 100037,China;4R&D Center for Saline Lake and Epithermal Deposits,Chinese Academy of Geological Sciences,Beijing 100037,China
  • Online:2013-06-05 Published:2013-06-05

摘要: 通过对比研究,分析了太阳池提锂实验和50 ℃模拟提锂实验的共性和差异。研究发现蒸发作用是导致实验前后卤水中离子变化差异的主要因素。通过化学分析,实验中析出的盐类矿物主要以Li+和CO32?为主,但是太阳池实验中盐类矿物的Li+和CO32?含量要比模拟实验高很多,通过初步分析计算,太阳池实验中析出的碳酸锂晶体含量要比50 ℃模拟实验高50%以上。温度在提锂过程中起到了重要作用,稳定的盐梯度层可以有效地阻止热量从下对流层散失,并且通过稀释下对流层中的离子浓度,可以延缓NaCl的析出。

关键词: 太阳池, 碳酸盐型盐湖, 碳酸锂

Abstract: The similarities and differences of lithium extraction from solar pond and 50 ℃ laboratory simulation are analyzed through a comparative study in this paper. It is found that the evaporation is the main factor for the differences of ion changes before and after brine experiments. The crystal minerals precipitated in the experiments mainly contain Li+ and CO32? according to the result of chemical analysis. But it is much more in the solar pond experiment than that in simulation experiment. Through the preliminary analysis,the content of lithium carbonate crystal precipitated from the solar pond is 50% higher than that in the 50 ℃ simulation experiment. Temperature plays an important role in the process of lithium extraction. Stable salt gradient layer can effectively prevent heat loss from the lower convective zone,and can delay the precipitation of NaCl by diluting the ion concentration in the lower convective zone.

Key words: solar pond, carbonate salt lake, lithium carbonate

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