利用城市固体废弃物飞灰和底灰制备透辉石基微晶玻璃

Diopside-based glass-ceramics from MSW fly ash and bottom ash.

作者信息

Qian Guangren, Song Yu, Zhang Cangang, Xia Yuqin, Zhang Houhu, Chui Pengcheong

机构信息

School of Environment Engineering, Shanghai University, No. 149 Yangchang Road, Shanghai 200072, China.

出版信息

Waste Manag. 2006;26(12):1462-7. doi: 10.1016/j.wasman.2005.12.009. Epub 2006 Feb 20.

DOI:10.1016/j.wasman.2005.12.009

PMID:16488596

Abstract

By utilising MSW fly ash from the Shanghai Yuqiao municipal solid waste (MSW) incineration plant as the main raw material, diopside-based glass-ceramics were successfully synthesized in the laboratory by combining SiO(2), MgO and Al(2)O(3) or bottom ash as conditioner of the chemical compositions and TiO(2) as the nucleation agent. The optimum procedure for the glass-ceramics is as follows: melting at 1500 degrees C for 30 min, nucleating at 730 degrees C for 90 min, and crystallization at 880 degrees C for 10h. It has been shown that the diopside-based glass-ceramics made from MSW fly ash have a strong fixing capacity for heavy metals such as lead (Pb), chromium (Cr), cadmium (Cd) etc.

摘要

以上海御桥生活垃圾焚烧厂的城市固体废弃物（MSW）飞灰为主要原料，通过添加SiO₂、MgO和Al₂O₃或底灰作为化学成分调节剂，并以TiO₂作为成核剂，在实验室中成功合成了透辉石基微晶玻璃。微晶玻璃的最佳制备工艺如下：在1500℃下熔化30分钟，在730℃下进行90分钟的核化处理，在880℃下进行10小时的晶化处理。结果表明，由城市固体废弃物飞灰制成的透辉石基微晶玻璃对铅（Pb）、铬（Cr）、镉（Cd）等重金属具有很强的固定能力。