硅铝质工业废弃物蒸压反应活性研究

摘要

Mass fractions of active SiO2 and A12O3 ,and infrared spectrum (IR) were used to analyze the autoclaved reaction activities of Si/Al - based industrial residues, such as fly ash and coal dust slag etc. Results showed that autoclaved reaction activities of Si/Al - based industrial residues had an evident relationship with the mass fractions of active SiO2 and A12O3 ,and Si - O stretching vibration frequency about 1 100 cm-1 in strong absorption region of IR,that is the more mass fractions of active SiO2 and Al2 O3, and the lower Si-O stretching vibration frequency about 1 100 cm -1 in strong absorption region of IR, the stronger autoclaved reaction activities and the higher compressive strength of autoclaved products.%通过测定活性二氧化硅、氧化铝含量及红外光谱分析等方法研究粉煤灰、煤粉炉渣等硅铝质工业废弃物的蒸压反应活性.结果表明,硅铝质工业废弃物的蒸压反应活性与其活性二氧化硅、氧化铝含量及红外光谱1 100 cm-1附近强吸收区的Si-O伸缩振动频率存在明显的对应关系,即活性二氧化硅、氧化铝含量越高,红外光谱1 100 cm-1附近强吸收区的Si-O伸缩振动频率越低,蒸压反应活性越强,蒸压制晶强度越高.