| 高铝粉煤灰烧结反应产物硅铝分离的研究 |
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| 引用本文： | 王蕾,马鸿文,张晓云,李贺香. 高铝粉煤灰烧结反应产物硅铝分离的研究[J]. 中国非金属矿工业导刊, 2006, 0(2): 29-32 |
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| 作者姓名： | 王蕾 马鸿文 张晓云 李贺香 |
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| 作者单位： | 中国地质大学矿物材料国家专业实验室,北京,100083 |
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| 摘 要： | 高铝粉煤灰与Na2CO3的烧结反应产物霞石,与HCl反应进行硅铝分离与提纯。通过对影响因素pH值与酸浓度讨论,得出随着pH值的不同,Si以H2SiO42-、H3SiO4-、H4SiO4等形式存在,Al以Al3 、Al(OH)2 、Al(OH)2 和Al(OH)3等形式存在;酸化后的体系pH值在1附近,铝硅酸溶胶体系的胶粒结构被破坏,Si-O-Al键断裂,Al3 溶出,减少了溶胶胶粒的粒径,使溶胶的稳定性降低,Al3 在溶胶中起絮凝剂的作用,使得溶胶胶粒可以沉聚或是絮凝。
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| 关 键 词： | 粉煤灰 酸浸 铝硅酸溶胶 硅铝分离 |
| 文章编号： | 1007-9386(2006)02-0029-04 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2006-01-11 |
Study on Slica-alumina Separated in Reacted Product of Baked High-alumina Fly Ash |
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| Wang Lei,Ma Hongwen,Zhang Xiaoyun,Li Hexiang. Study on Slica-alumina Separated in Reacted Product of Baked High-alumina Fly Ash[J]. China Non-Metallic Mining Industry Herald, 2006, 0(2): 29-32 |
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| Authors: | Wang Lei Ma Hongwen Zhang Xiaoyun Li Hexiang |
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| Affiliation: | National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083 |
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| Abstract: | The reacted product Nepheline baked high-alumina fly ash with Na2CO3,was acid soaked with HCl.The influenced factors pH and acid density is discussed in the paper.Under the different pH,Si is formed H2SiO42-,H3SiO4-,H4SiO4 et al;Al is formed Al3 ,Al(OH)2 ,Al(OH)2 ,Al(OH)3 et al.The system pH is close to 1 after acid soaked,and the construction of alu minosilica sol is damaged,the bond of Si-O-Al broken and Al3 dissolved that shorten the sol diameter particle,meanwhile lowered the sol stability.Al3 is performed as aggregation. |
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| Keywords: | fly ash acid soak aluminosilica sol silica and alumina separated |
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