| 碳化法制备超细球形碳酸钙初探 |
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| 引用本文： | 向兰,向英,袁红霞,王亭杰.碳化法制备超细球形碳酸钙初探[J].过程工程学报,2002,2(1):50-54. |
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| 作者姓名： | 向兰 向英 袁红霞 王亭杰 |
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| 作者单位： | 清华大学化工系,北京,100084 |
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| 摘 要： | 研究了利用改进的碳化法合成超细球形碳酸钙的可行性. 考察了布气方式(板式及管式气体分布器)、化学添加剂以及CO2/N2混合气体组成对碳酸钙粒径和形貌的影响. 结果表明，采用小气泡及CO2含量较高的混合气体有利于形成超细碳酸钙，加入少量添加剂如ZnCl2，MgCl2或EDTA可明显改变碳酸钙粒子的形貌和大小.
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| 关 键 词： | 碳酸钙 超细粉体 碳化法 管式分布器 添加剂 |
| 文章编号： | 1009-606X(2002)01-0050-05 |
| 修稿时间： | 2001年3月5日 |
Preparation of Super-fine Spherical CaCO3 by the Carbonation Method |
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| XIANG Lan,XIANG Ying,YUAN Hong-xia,WANG Ting-jie.Preparation of Super-fine Spherical CaCO3 by the Carbonation Method[J].Chinese Journal of Process Engineering,2002,2(1):50-54. |
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| Authors: | XIANG Lan XIANG Ying YUAN Hong-xia WANG Ting-jie |
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| Abstract: | The feasibility of preparing super-fine CaCO3 powder by an improved carbonation method was studied.The influence of gas distribution, chemical agents and CO2/N2 mixture on the size and morphology of CaCO3 was investigated. Bubbles with smaller size and gas mixture with higher CO2 concentration are favorable to the formation of super-fine CaCO3. The morphology and diameter of CaCO3 product are influenced obviously by the addition of additives such as ZnCl2, MgCl2 or EDTA . |
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| Keywords: | calcium carbonate super-fine powder carbonation method tube sparger additive |
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