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

作　　者：宋玉[1] 田瑾[2] 钱光人[1] 

机构地区：[1]上海大学环化学院环境系,上海200072 [2]上海市环境保护局,上海200003

出　　处：《环境科学学报》2006年第6期936-943,共8页Acta Scientiae Circumstantiae

基　　金：国家科技部创新基金(No.03C26213100902);上海市重点科研攻关项目(No.0323120432)~~

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.By utilizing fly ash from the Shanghai Yuqiao municipal solid waste （MSW） incineration plant as the main raw matefial,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）

关 键 词：城市垃圾焚烧飞灰 微晶玻璃 硅灰石 重金属浸出率 

分 类 号：X705[环境科学与工程—环境工程]