无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (12): 28-.

• 论文 • 上一篇    下一篇

提锂吸附剂的合成与吸附过程研究

解利昕1,赵 煜1,陈小棉1,解 奥2   

  1. 1.天津大学化工学院,天津市膜科学与海水淡化技术重点实验室,天津 300072;2.天津大学理学院
  • 发布日期:2012-12-11

Synthesis of adsorbent for extracting lithium and research on adsorption process

Xie Lixin1,Zhao Yu1,Chen Xiaomian1,Xie Ao2   

  1. 1.Tianjin Key Laboratory of Membrane Science and Desalination Technology,School of Chemical Engineering and Technology,
    Tianjin University,Tianjin 300072,China; 2.School of Science,Tianjin University
  • Online:2012-12-11

摘要: 以高锰酸钾为主要原料,经水热反应、煅烧合成尖晶石型锂锰氧化物Li1.6Mn1.6O4。用盐酸对Li1.6Mn1.6O4进行锂-氢交换,制得具有锂离子吸附效果的吸附剂H1.6Mn1.6O4。采用X射线粉末衍射(XRD)和扫描电镜(SEM)对反应过程的中间产物及最终产物进行表征。对H1.6Mn1.6O4进行吸附实验,结果表明吸附剂对锂离子具有较好的吸附效果,最大吸附量为46 mg/g。用盐酸对吸附饱和的吸附剂进行脱锂实验,结果表明脱附率在95%以上,溶损率在3%左右。

关键词: 锂锰氧化物, 提锂, 吸附剂, 水热法

Abstract: Spinel Li1.6Mn1.6O4 was synthesized with KMnO4 as raw material via hydrothermal reaction and calcinations.Then H1.6Mn1.6O4 which had a lithium adsorption effect was produced by exchanging H+ in HCl with the lithium of spinel Li1.6Mn1.6O4. The intermediate-product and end-product were characterized by SEM and XRD.The results of adsorption experiment using H1.6Mn1.6O4 as the adsorbent,showed that the synthetic adsorbent had a good performance in adsorption capacity to lithium ions with the maximum adsorption of 46 mg/g.And the results of desorption experiment with HCl showed that the desorption rate was above 95% and the dissolved loss rate was about 3%.

Key words: lithium-manganese oxide, lithium extraction, adsorbent, hydrothermal method

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