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 ›› 2011, Vol. 43 ›› Issue (4): 6-.

• 论文 • 上一篇    下一篇

水氯镁石脱水技术的研究进展

王芹1,2,郭亚飞1,2,王士强2,邓天龙1,2,3   

  1. 1.成都理工大学材料与化学化工学院 ,四川成都 610059;2.天津科技大学海洋科学与工程学院天津市海洋资源与化学重点实验室;3.中国科学院青海盐湖研究所中科院盐湖资源与化学重点实验室
  • 发布日期:2011-04-19

Progress in dehydration technique of bischofite

Wang Qin1,2,Guo Yafei1,2,Wang Shiqiang2,Deng Tianlong1,2,3   

  1. 1.School of Materials,Chemistry and Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China;2.Tianjin Key Laboratory of Marine Resources and Chemistry,School of Marine Science and Engineering,Tianjin University of Science &Technology;3.CAS Key Laboratory of Salt Lake Resources and Chemistry,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences
  • Published:2011-04-19

摘要: 镁化合物与金属镁及其合金具有重大工业应用价值。中国海洋和盐湖卤水中含有巨量的氯化镁,尤其是盐湖提钾后老卤经蒸发具有宏量水氯镁石(MgCl2•6H2O)产出,水氯镁石经脱水后得到的无水氯化镁是电解镁最佳的原材料。然而,水氯镁石脱水过程中存在许多技术难题一直阻碍着水氯镁石资源的广泛应用。主要介绍水氯镁石脱水技术的发展现状,内容包括气体保护法、复盐法和氨络合法等,指出了中国盐湖镁资源的巨大利用前景。

关键词: 海水, 盐湖卤水, 水氯镁石, 脱水技术

Abstract: Magnesium compounds,metallic magnesium and its alloy have great industrial application value.There is abundant magnesium chloride in the ocean and salt lake brine in China.Especially,there is a large amount of bischofite (MgCl2•6H2O) produced when the mother brine is continuously evaporated after potassium is separated from the salt lake brine.Although anhydrous  magnesium chloride is the best raw material for magnesium electrolysis,there are lots of technical barriers in the dehydration of bischofite.Thus extensive use of bischofite resources is restricted.Present development status of bischofite dehydration technique,including the methods of gas environmental protection,double salt,and ammonia complexometry etc.,was reviewed,and the considerable utilization prospect of magnesium resources in salt lake brine in China was also pointed out.

Key words: seawater, salt lake brine, bischofite, dehydration technique

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