Thermal Treatment of Coal-Gangue Activation and Influential Factors

In this paper, the chemical-thermal composite of coal gangue activation and influence factors is studied. Using adopting Al3+ dissolution rate as an evaluation index to determine the activation conditions, XRD is used to determine the crystal structure and SEM scanning electron microscopy (SEM) for crystal morphology. The results shows that the best activation conditions of calcination for coal gangue activation time is1.5h, under the condition of calcination temperature 650°C, water cooling, the Al3+ dissolution rate can reach 70.14%.After activation of coal gangue, the kaolinite convert directly into cetakaolinite, its active composition SiO2 and Al2O3 present loose shape, good activation, can be used as an adsorbent and catalyst materials.