| 高铁高砂煤矸石除铁及碱融活化合成4A分子筛 |
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| 引用本文： | 孔德顺,吴红,毕迎鑫.高铁高砂煤矸石除铁及碱融活化合成4A分子筛[J].无机盐工业,2011,43(5):52-54. |
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| 作者姓名： | 孔德顺 吴红 毕迎鑫 |
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| 作者单位： | 六盘水师范学院环境与化工系，贵州六盘水 553004 |
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| 基金项目： | 贵州省六盘水市科技计划资助项目，贵州省教育厅资助项目，六盘水师范学院科研资助项目 |
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| 摘 要： | 高铁高砂的劣质煤矸石经酸浸除铁和纯碱碱融活化处理后，除铁率达到96.8%，高岭石及石英砂被完全活化，煤矸石生成了可溶于碱液的中间产物霞石（NaAlSiO4）及活性偏高岭石，将其再进行水热晶化得到了4A分子筛。用XRF、XRD、SEM等对原矿、预处理产物和产品进行了检测。结果表明：产品为较纯净的4A分子筛,粒径小于2 μm,干基产品的钙离子交换量为295.5 mg CaCO3/g。
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| 关 键 词： | 煤矸石 除铁 碱融 4A分子筛 |
Synthesis of 4A molecular sieves from gangue with high iron and silica contents by iron removal and alkali melting activation |
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| Kong Deshun,Wu Hong,Bi Yingxin.Synthesis of 4A molecular sieves from gangue with high iron and silica contents by iron removal and alkali melting activation[J].Inorganic Chemicals Industry,2011,43(5):52-54. |
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| Authors: | Kong Deshun Wu Hong Bi Yingxin |
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| Affiliation: | Department of Environment and Chemical Engineering, Liupanshui Normal College, Liupanshui 553004,China |
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| Abstract: | Poor quality gangue with high iron and silica contents was treated to remove iron impurity by acid leaching and activated by sodium carbonate melting,the iron removal ratio was up to 96.8%.Kaolinite and silica were activated completely,and gangue turned into intermediate product nepheline(NaAlSiO4) and active metakaolinite,4A molecular sieves were obtained by hydrothermal crystallization.Green ore,pretreated material,and products were characterized by XRF,XRD and SEM etc..Results showed that the products we... |
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| Keywords: | gangue iron removal alkali melting 4A molecular sieve |
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