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 ›› 2020, Vol. 52 ›› Issue (4): 42-48.doi: 10.11962/1006-4990.2019-0270

• 研究与开发 • 上一篇    下一篇

适用于镁锂分离纳滤膜的筛选

成琪1,孟永涛2,毕秋艳1,马丽1,关云山1()   

  1. 1.青海大学化工学院,青海西宁 810016
    2.青海省化工设计研究院有限公司
  • 收稿日期:2019-10-20 出版日期:2020-04-10 发布日期:2020-04-22
  • 通讯作者: 关云山
  • 作者简介:成琪(1993— ),男,硕士研究生, 研究方向为纳滤膜分离技术。
  • 基金资助:
    青海省应用基础研究项目(2018-ZJ-916)

Screening of nanofiltration membrane for separation of magnesium and lithium

Cheng Qi1,Meng Yongtao2,Bi Qiuyan1,Ma Li1,Guan Yunshan1()   

  1. 1.School of Chemical Engineering,Qinghai University,Xining 810016,China
    2.Qinghai Province Chemical Design and Research Institute Co.,Ltd.
  • Received:2019-10-20 Online:2020-04-10 Published:2020-04-22
  • Contact: Guan Yunshan

摘要:

纳滤膜广泛应用于各分离领域,市售纳滤膜种类繁多,分离性能差异很大。对6种市售的纳滤膜(NT102、NT103、NT201、NF90、NF270、XN-45)进行镁锂分离实验,通过改变原料液稀释倍数、镁锂比、温度、pH及操作压力等条件,测得在不同条件下6种纳滤膜对镁锂的分离性能。结果表明:6种纳滤膜对镁锂分离性能具有明显差异,NT201和NT103最好,NF270和XN-45次之,NF90和NT102最差,可见NT201、NT103纳滤膜对镁锂分离性能最为优异。

关键词: 镁锂分离, 纳滤膜, 筛选

Abstract:

Nanofiltration membranes are widely used in various separation fields.There are many kinds of nanofiltration mem-branes on sale,and their separation performance varies greatly.Magnesium-lithium separation experiments were carried out on six kinds of nanofiltration membranes sold in the market:NT102,NT103,NT201,NF90,NF270 and XN-45.The separa-tion performance of the six kinds of nanofiltration membranes for magnesium-lithium was measured under different operating conditions by changing the dilution ratio,the ratio of magnesium to lithium,the temperature and the pH of raw liquid,and the operating pressure.Results showed that there were obvious differences of separation performance:NT201≈NT103>NF270≈XN-4>NF90≈NT102.NT201 and NT103 nanofiltration membranes showed the best separation performance for magnesium and lithium.

Key words: magnesium-lithium separation, nanofiltration membrane, screening

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