本文利用红外吸收光谱(IR)和X射线衍射(XRD)对赤泥黑色玻璃及其晶化过程的结构进行了研究. 结果表明：赤泥黑色玻璃晶化析出主晶相为钙铁透辉石，次晶相为钙黄长石. 玻璃网络中主要有SiO4、AlO4及Fe3+O4 四面体结构单元，玻璃结构中具有和钙铁透辉石结构类似的近程排列，这个近程排列具有析出主晶相(钙铁透辉石)的先驱结构. 随核化时间延长及晶化温度提高，红外最强吸收带朝低波数方向移动，吸收带强度随晶化温度的提高而明显增大. 随Fe2O3含量增加，网络无序度增大，玻璃红外吸收谱带也向低波数方向移动.
FTIR absorption spectra and XRD were used to study the structure of glasses using red mud as raw materials. The results indicate that Ca(Fe, Mg)Si2O6 and 2CaO2O32 precipitate as primary and minor crystalline phase respectively on crystallization processes of glasses. Glasses have interlinked SiO4, AlO4 and Fe3+O4 tetrahedra as their most fundamental units with K+, Na+, Fe2+ and some Fe3+ ions acting as charge balancing cations. The short-range order which is similar to the structure of Ca(Fe, Mg)Si2O6 exists in the glasses and has the precursor structures of primary crystalline phase. With the increase of Fe2O3 content, the random state of glass structure increases. The absorption bands of FTIR spectra become broaden and shift from the high frequency region to lower frequencies. With prolonging nucleation time and improving crystallization temperature, the strongest absorption bands also shift from the high frequency region to lower frequencies
参考文献
| [1] | 李秋生. 轻金属, 1995, (1): 26--28. |
| [2] | 刘子高, 杨昌适, 程宗浩. 中国有色金属学报, 1997, 7 (1): 40--44. |
| [3] | 杨明安. 轻金属, 1995, (9): 1--5. |
| [4] | 章庆和, 庄剑鸣, 王隆千. 矿产综合利用, 1994, (1): 37--40. |
| [5] | Krystyna E. Linpinska-Kalita, Edward Gorlich, J. Non-crystalline. Solids, 1990, 119: 310--317. |
| [6] | 张培新,阎加强.无机化学学报,待发表 |
| [7] | 彭文世,刘高魁.矿物红外光谱图集.北京：科学出版社, 1982. 356 |
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