| 盐湖粗光卤石中晶体的分布 |
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| 引用本文： | 张婉萍,王相田,宋兴福,于建国.盐湖粗光卤石中晶体的分布[J].化工学报,2005,56(6):1124-1129. |
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| 作者姓名： | 张婉萍 王相田 宋兴福 于建国 |
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| 作者单位： | 华东理工大学化学工程联合重点实验室，上海 200237 |
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| 基金项目： | 上海市优秀学科带头人计划. |
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| 摘 要： | 研究了察尔汗盐湖粗光卤石中各种无机盐晶体的存在形式及形态.通过筛分法将粗光卤石矿分级，运用化学法分析各粒级颗粒的组成.结果表明：90％以上的KCl•MgCl2•6H2O以大于0.177 mm粒径的大颗粒存在，75％以上的NaCl以小于0.125 mm粒径的细粒矿存在于体系中，约90%以上的CaSO4以粒径小于0.074 mm的微细颗粒存在.运用X射线衍射法分析了不同粒径的光卤石矿表面的化学组成，运用光电子能谱法分析了其表面Na/Ca的摩尔比，用扫描电镜及能谱分析直接分析了各种晶体存在的形态.研究结果表明，大部分NaCl和CaSO4分别以小颗粒游离于粗光卤石矿中，未被大颗粒晶体所包裹.
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| 关 键 词： | 光卤石 存在形态 X射线衍射 光电子能谱 电镜扫描 |
| 文章编号： | 0438-1157(2005)06-1124-06 |
| 收稿时间： | 2004-4-27 |
| 修稿时间： | 2004-8-17
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Distribution of inorganic crystal particles in carnallite |
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| Zhang Wanping,WANG Xiangtian,SONG Xingfu,Yu Jianguo.Distribution of inorganic crystal particles in carnallite[J].Journal of Chemical Industry and Engineering(China),2005,56(6):1124-1129. |
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| Authors: | Zhang Wanping WANG Xiangtian SONG Xingfu Yu Jianguo |
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| Abstract: | Particle size, surface composition and crystal configurations of Kvarkhan’s carnallite were investigated. Particle sizes and composition were determined by sieving and chemical analysis. The results showed that more than 90% of KCl•MgCl2• 6H2O crystal particles were larger than 0.177 mm, more than 75% of NaCl particles were smaller than 0.125 mm, and more than 90% of CaSO4 particles were smaller than 0.074 mm. Surface compositions were studied by X-ray diffraction analysis. Ca/Na of carnallite components were determined by X-ray photoelectron spectroscopy. The results of scanning electron photomicrograph and energy-dispersive X-ray analysis demonstrated that all those crystal particles were present independently in carnallite. |
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| Keywords: | carnallite configuration X-ray diffraction X-ray photoelectron spectroscopy scanning electron microscope |
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