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

详细信息    查看全文

• 作者：Guangren Qian ; Yu Song ; Cangang Zhang ; Yuqin Xia ; Houhu Zhang and Pengcheong Chui
• 刊名：Waste Management
• 出版年：2006
• 出版时间：2006
• 年：2006
• 卷：26
• 期：12
• 页码：1462-1467
• 全文大小：280 K

文摘

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 SiO₂, MgO and Al₂O₃ or bottom ash as conditioner of the chemical compositions and TiO₂ as the nucleation agent. The optimum procedure for the glass-ceramics is as follows: melting at 1500 °C for 30 min, nucleating at 730 °C for 90 min, and crystallization at 880 °C for 10 h. 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.