| 煤矸石热活化和胶凝化过程中硅铝的配位 |
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| 引用本文： | 李化建,孙恒虎,铁旭初.煤矸石热活化和胶凝化过程中硅铝的配位[J].清华大学学报(自然科学版),2006,46(12):2015-2018. |
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| 作者姓名： | 李化建 孙恒虎 铁旭初 |
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| 作者单位： | 1. 清华大学,材料科学与工程系,北京,100084
2. 中国矿业大学(北京校区)资源与安全工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金;教育部科学技术研究重点项目 |
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| 摘 要： | 为了煤矸石综合利用,用红外谱图和固体核磁共振,研究煤矸石热处理及胶凝化过程中S i和A l的配位变化。研究表明,在煤矸石热活化和水泥制备过程中六配位的铝逐渐转变为四配位的铝。活化煤矸石胶凝化过程中,六配位的铝也逐渐转变为四配位铝,形成铝硅酸盐。水泥胶凝过程中,四配位铝逐渐转变为六配位的铝。通过热活化手段增加煤矸石中四配位铝含量可以提高煤矸石胶凝性能。
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| 关 键 词： | 煤矸石 硅铝的配位 硅的同构效应 热活化 胶凝化 硅铝基胶凝材料 |
| 文章编号： | 1000-0054(2006)12-2015-04 |
| 修稿时间： | 2005年12月27 |
Coordination of Si and Al in the thermal activation and gelatification of gangue |
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| LI Huajian,SUN Henghu,TIE Xuchu.Coordination of Si and Al in the thermal activation and gelatification of gangue[J].Journal of Tsinghua University(Science and Technology),2006,46(12):2015-2018. |
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| Authors: | LI Huajian SUN Henghu TIE Xuchu |
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| Abstract: | Changing of the coordination of Si and Al in the thermal activation and the gelatification of gangue improves the gangue usage.Infrared spectroscopy(IR) and magnetic angle spinning nuclear magnetic resonance(MAS NMR) were used to measure the coordination changes.During the calcination of gangue and the production of cement,the 6-coordinated Al was gradually transformed to the 4-coordinated Al.In the gelatification of activated gangue,the 6-coordinated Al was transformed to the 4-coordinated Al so as to form the aluminumsilicate.But in the hydration of cement,4-coordinated Al was transformed to 6-coordinated Al.Thermal activation is a good method to increase the amount of 4-coordinated Al and to improve gelatification activation of gangue. |
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| Keywords: | gangue coordination of Si and Al isomorphic effect of Si thermal activation gelatification aluminumsilicate based cementitious material |
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