Guerrero A, Goñi S, Campillo I, Moragues A
Instituto de Ciencias de la Construcción Eduardo Torroja--(CSIC), Serrano Galvache s/n, 28033 Madrid, España.
Environ Sci Technol. 2004 Jun 1;38(11):3209-13. doi: 10.1021/es0351589.
The optimization of parameters of synthesis of belite cement clinker from coal fly ash of high Ca content is presented in this paper. The synthesis process is based on the hydrothermal-calcination-route of the fly ash without extra additions. The hydrothermal treatment was carried out in demineralized water and a 1 M NaOH solution for 4 h at the temperatures of 100 degrees C, 150 degrees C, and 200 degrees C. The precursors obtained during the hydrothermal treatmentwere heated at temperatures of 700 degrees C, 800 degrees C, 900 degrees C, and 1000 degrees C. The changes of fly ash composition after the different treatments were characterized by X-ray diffraction (XRD), FT infrared (FTIR) spectroscopy, surface area (BET-N2), and thermal analyses. From the results obtained we concluded that the optimum temperature of the hydrothermal treatment was 200 degrees C, and the optimum temperature for obtaining the belite cement clinker was 800 degrees C.
本文介绍了以高钙粉煤灰合成贝利特水泥熟料的参数优化。合成过程基于粉煤灰的水热-煅烧路线，无需额外添加物。水热处理在去离子水和1M氢氧化钠溶液中于100℃、150℃和200℃温度下进行4小时。水热处理过程中获得的前驱体在700℃、800℃、900℃和1000℃温度下加热。通过X射线衍射（XRD）、傅里叶变换红外（FTIR）光谱、比表面积（BET-N2）和热分析对不同处理后粉煤灰成分的变化进行了表征。根据所得结果，我们得出水热处理的最佳温度为200℃，获得贝利特水泥熟料的最佳温度为800℃。
