煤矸石活化过程中结构特性和力学性能的研究

STUDY ON STRUCTURAL CHARACTERISTIC AND MECHANICAL PROPERTY OF COAL GANGUE IN ACTIVATION PROCESS

对不同温度下煅烧煤矸石水泥混合材进行了系统研究 ,以寻找煤矸石活性的最佳煅烧温度。选用增钙煅烧的方式提高煤矸石活性。为了进一步了解煤矸石的活化过程 ,对其进行了扫描电镜 (scanningelectronmicroscope ,SEM ) ,核磁共振 (nuclearmagneticresonance,NMR)等测定。通过SEM方法可以观察不同状态煤矸石颗粒形貌的变化。通过NMR方法 ,从Si,Al原子所处环境和相互间的关系角度上对不同状态煤矸石活化过程进行结构层次上的研究。

The systematic research was carried out for coal gangue calcined at different temperatures, which was used as cement mixture, so as to find the optimum temperature for the activation of coal gangue. The way of calcining coal gangue with calcium was chosen to raise the activity of coal gangue. In order to make the activation process of coal gangue clear, some samples were determined by means of scanning electron microscope (SEM) and nuclear magnetic resonance (NMR). The changes of granule shape of coal gangue in different states can be observed by SEM. The research of structural level for the activation process of coal gangue was made by NMR from the point of environment of Si atom and Al atom as well as the relation between each other.