污染控制技术及原理
宋玉,田瑾,钱光人.利用城市垃圾焚烧飞灰制备微晶玻璃的研究[J].环境科学学报,2006,26(6):936-943
利用城市垃圾焚烧飞灰制备微晶玻璃的研究
- Study on preparation of glass-ceramics using MSW fly ash as raw material
- 基金项目：国家科技部创新基金(No.03C26213100902);上海市重点科研攻关项目(No.032312043-2)
- 作者
- 单位
- 宋玉
- 上海大学环化学院环境系, 上海 200072
- 田瑾
- 上海市环境保护局, 上海 200003
- 钱光人
- 上海大学环化学院环境系, 上海 200072
- 摘要：利用上海御桥垃圾焚烧厂的焚烧飞灰为主要原料,通过添加SiO2、Al2O3、NaOH组分在实验室研制成功了以硅灰石(wollastonite)为主晶相的微晶玻璃.该体系微晶玻璃制备的最佳工艺条件为:熔融温度1500℃、熔融时间1h,核化温度为920℃,核化时间1.5h,晶化温度为1150～1180℃,晶化时间为2h.研究结果表明,硅灰石为主晶相的微晶玻璃对Pb、Cr和Cd重金属具有很强的稳定束缚能力.
- Abstract：By utilizing fly ash from the Shanghai Yuqiao municipal solid waste (MSW) incineration plant as the main raw material,wollastonite-based glass-ceramics were successfully synthesized in the laboratory by doping with SiO2, Al2O3, NaOH as chemical conditioner. The optimum preparation condition for the glass-ceramics is as follows:melting at 1500℃ for 1 hour,nucleating at 920℃ for 90 mins, and crystallization at 1150～1180℃ for 120 mins. It is indicated that the wollastonite-based glass-ceramics made from MSW fly ash has a strong fixing capacity for heavy metals such as lead(Pb), chromium(Cr), cadmium(Cd).
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