| 河南信阳上天梯膨润土制备高效活性白土试验研究 |
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| 引用本文： | 黄彦林,周一民,李英堂.河南信阳上天梯膨润土制备高效活性白土试验研究[J].高校地质学报,2000,6(2):292-297. |
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| 作者姓名： | 黄彦林 周一民 李英堂 |
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| 作者单位： | 国家非金属矿资源综合利用工程技术研究中心,河南 郑州 450006 |
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| 基金项目： | 科技部专项基金，河南省科技攻关项目，960441034，971140201，， |
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| 摘 要： | 上天梯膨润土属于钙基膨润土，主要矿物成分是钙质蒙脱石。矿石的胶体分散性较差，阳离子交换总量较低，主要的可交换阳离子是钙、镁离子。蒙脱石的晶体化学结构研究表明，蒙脱石有较高的有序度和较大的层电荷，因此，上天梯膨润土适合于制备高效活性白土。试验讨论了酸性活化、固液比及活化时间对产品质量的影响,确定了最佳工艺条件。对原矿进行捣浆提纯后，用16％～20％的硫酸溶液对膨润土进行活化，活化时间 6～8小时，固液比1∶2。制得的活性白土的脱色力达156～218，活性度大于222m.mol/100g ，其质量达到和超过了国家行业标准和同行业该产品的指标，脱色效果良好。
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| 关 键 词： | 钙基膨润土 蒙脱石 高效活性白土 酸化处理 |
| 收稿时间： | 2000-06-20 |
| 修稿时间： | 1999-11-30 |
Experimental Study on Preparation of Activated White Clay by Bontonite from Shangtianti District, Xinyang Area, Henan Province |
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| HUANG Yan-lin,ZHOU Yi-min,LI Ying-tang.Experimental Study on Preparation of Activated White Clay by Bontonite from Shangtianti District, Xinyang Area, Henan Province[J].Geological Journal of China Universities,2000,6(2):292-297. |
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| Authors: | HUANG Yan-lin ZHOU Yi-min LI Ying-tang |
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| Institution: | National Engineering Center for Multipurpose Utilization of Non-Metallic Mineral Resources, Zhengzhou, 450006 |
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| Abstract: | The bentonite of Shangtianti district belongs to Ca-bentonite. Its major mineral is Ca-montmorillonite; its colloidal dispersion is not go od; its cation exchange capacity is low; and its exchangeable cations are Ca 2+ and Mg2+. The studies on crystallochemical structure of montmorilloni te indicates that the montmorillonite has a higer ordering degree and a larger l ayer charge. The crystallochemical data indicate that the Shangtianti bentonite is suitable for preparing the activated white clay. The influence of acid curin g, solid-liquid ratios, activation time on the products properties were analyse d. The optium technoloqical conditions were obtained.At the beginning the pur ification of ore was made by pounding of raw ore to the serous liquid. Later on the ore was activated by 16%～20% sulfuric acid solution. The activat ion time was 6～8 hours. The solid-liquid ratio was 1:2. The decolouring forc e of the activated white clay was 156～218 and its activity degree was above 222 m.mol/100g. The main quality parameters of the white clay reach or outstrip the required trade standards. The decolourization effect was very good. |
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| Keywords: | Ca-bentnote montmorillonite activated white cla y acid curing activation |
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