| 由盐田水氯镁石制取食品级氯化镁的研究 |
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| 引用本文： | 姬连敏,刘志启,李丽娟,宋雪雪,曾忠民,聂 锋,徐德芳,宋富根,时东.由盐田水氯镁石制取食品级氯化镁的研究[J].盐湖研究,2017,25(3):51-60. |
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| 作者姓名： | 姬连敏 刘志启 李丽娟 宋雪雪 曾忠民 聂 锋 徐德芳 宋富根 时东 |
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| 作者单位： | 中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008,中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海 西宁 810008 |
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| 基金项目： | 青海省科技厅资助项目(2014-GX-C10)和(2015-GX-CO3A) |
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| 摘 要： | 研究了氯化镁原矿与二次水的溶解实验,采用ICP和XRD对滤液及滤渣组成进行了分析。结果表明:100 mL二次水溶解350 g氯化镁原矿,经过滤后滤液中NaCl、KCl和CaSO_4含量达到最低值。滤液经一段和二段蒸发水量分别为16.25 g和45.34 g,二段蒸发结晶产品的杂质NaCl、KCl和CaSO_4含量(%)达到最低值,分别为0.46、0.12和0.042。通过溶解实验,在最大程度上增大了溶液中氯化镁的质量分数,减少了溶液中杂质含量,为一段蒸发析晶除杂及二段蒸发结晶降低了能耗、节约了生产成本。
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| 关 键 词： | 食品级 氯化镁 纯化 溶解 |
| 收稿时间： | 2016/5/5 0:00:00 |
| 修稿时间： | 2016/7/26 0:00:00 |
Preparation of Food-grade Magnesium Chloride from Bischofite of Solar Pond |
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| JI Lian-min,LIU ZHi-qi,LI Li-juan,SONG Xue-xue,ZENG ZHong-min,XU De-fang,NIE Feng,SONG Fu-gen and SHI Dong.Preparation of Food-grade Magnesium Chloride from Bischofite of Solar Pond[J].Journal of Salt Lake Research,2017,25(3):51-60. |
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| Authors: | JI Lian-min LIU ZHi-qi LI Li-juan SONG Xue-xue ZENG ZHong-min XU De-fang NIE Feng SONG Fu-gen and SHI Dong |
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| Institution: | Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China,Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China and Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Chinese Academy of Sciences, Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining, 810008,China |
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| Abstract: | :The dissolutionrecrystallization process of magnesium chloride minerals in the distilled water were studied at a series of conditions.The compositions of filtrates and residues were analyzed and characterized using ICP and XRD.The results show that the contents of NaCl, KCl and CaSO4 in the filtrate decreased to the minimum value after treatment at the condition of 350 g magnesium chloride and 100 mL distilled water.Then the impurity contents of NaCl, KCl and CaSO4 in the MgCl2·6H2O crystal product reached to a minimum value after evaporating water of 16.25 g and 45.34 g in the first and second evaporation steps, respectively, and completely met the national standard GB 25584-2010.The magnesium chloride mineral was greatly purified after dissolution treatment in distilled water at proper condition and the process was of low energy consumption and economic cost. |
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| Keywords: | Food-grade Magnesium chloride Purification Dissolution pretreatments |
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