...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Waste Management >A novel approach for lithium recovery from waste lithium-containing aluminum electrolyte by a roasting-leaching process
【24h】

A novel approach for lithium recovery from waste lithium-containing aluminum electrolyte by a roasting-leaching process

机译：通过焙烧浸出过程从废锂铝电解质中锂回收的新方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

With the development of secondary resources, development of suitable methods for the recovery of high value metals from solid waste is crucial for sustainable development. Aluminum electrolysis of China, solid waste, such as waste aluminum electrolyte, has been largely idled and caused serious environmental pollution. In this paper, a novel approach is developed for achieving the separation/recovery of lithium from spent lithium-containing aluminum electrolyte by a sodium carbonate roasting-acid leaching process. The effect on the extraction behavior of lithium under different roasting and leaching conditions was systematically studied. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to elucidate the phase evolution. The results indicated that 73.1% of the lithium was obtained under the optimized conditions: a m(actual)/m(theory) ratio of 1.10 with roasting at 850 °C for 2.5 h; a HNO_3 solution concentration of 2 mol/L, and a liquid to solid ratio of 10 at 60 °C for 180 min. Through the analysis of the roasting sample, it was found that the addition of Na_2CO_3 promoted the conversion of Na_2LiAlF_6 to LiF. The content of lithium in electrolyte significantly reduced from 2.20% to 0.71% after leaching, which made it possible for the residue to be reused as the raw material for the aluminum reduction cell. The leachate was neutralized and purified with CaO and Na_2CO_3 solution, respectively, and then lithium be recovered in the form of Li_2CO_3. Overall, this study highlights an effectively and environmentally feasible plan for the treatment of spent aluminum electrolyte and to recycle lithium.
机译：随着二级资源的发展，从固体废物中恢复高价值金属的合适方法对可持续发展至关重要。中国铝电解，固体废物，如废铝电解质，已经大大闲置并引起了严重的环境污染。在本文中，开发了一种新的方法，用于通过碳酸钠焙烧酸浸出工艺实现从含锂含锂铝电解质的锂分离/恢复的方法。系统地研究了对不同焙烧和浸出条件下锂萃取行为的影响。使用X射线衍射（XRD）和扫描电子显微镜（SEM）来阐明相进化。结果表明，在优化条件下获得73.1％的锂：M（实际）/ m（理论）比率为1.10，焙烧在850℃下为2.5小时; HNO_3溶液浓度为2mol / L，液体与60℃下的固体比为180分钟。通过对焙烧样品的分析，发现添加Na_2CO_3将Na_2LialF_6的转化为LiF。浸出后，电解质中锂的含量显着降低了2.20％至0.71％，这使得残余物可以作为铝还原细胞的原料重复使用。渗滤液分别中和并分别用CaO和Na_2CO_3溶液纯化，然后以Li_2CO_3的形式回收锂。总体而言，该研究突出了用于处理废铝电解质和再循环锂的有效和环境可行的计划。

著录项

  • 来源
    《Waste Management》 |2021年第10期|89-99|共11页
  • 作者

    Shaohua Wu; Wenju Tao; Yanchen Zheng; Hui Ge; Jingui He; Youjian Yang; Zhaowen Wang;

  • 作者单位

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

    School of Materials Science and Engineering Shenyang Ligong University Shenyang 110159 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education) School of Metallurgy Northeastern University Shenyang 110819 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Waste aluminum electrolyte; Roasting-leaching; Recycling lithium; Lithium carbonate;

    机译：废铝电解质;烘焙浸出;回收锂;碳酸锂;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号