生态水泥中SiO2掺量对焚烧飞灰中重金属固溶特性的影响

材料导报, 2014, 28(14): 127-132.

生态水泥中SiO2掺量对焚烧飞灰中重金属固溶特性的影响

曹晓非 ^1, , 徐觉慧 ^2, , 李和平 ^3, , 刘静 ^4,

1.徐州市产品质量监督检验中心,徐州,221000

2.徐州市产品质量监督检验中心,徐州,221000

3.徐州市产品质量监督检验中心,徐州,221000

4.徐州市产品质量监督检验中心,徐州,221000

关键词：垃圾焚烧飞灰 , 重金属 , 生态水泥熟料

Effect of SiO2 Mixing Ratio on Solid Solubility of Heavy Metal in MSWI Fly Ashes in Ecological Cement

Keywords： MSWI fly ash , heavy metals , ecological cement clinker

按不同SiO2掺量(质量分数)进行垃圾焚烧飞灰的水泥固化试验,研究了SiO2掺量对熟料试样的重金属分布、浸出毒性的影响.结果表明,SiO2掺量低于16％时,提高掺量有利于增加熟料中Cr、Ni、Cu、As固溶率;但SiO2掺量超过16％后,重金属固溶率与其成反比.Cd、Pb、Zn的挥发率随SiO2掺量增加而减少,掺加SiO2能明显抑制Zn的挥发,但基本不影响Hg的挥发.SiO2掺量增加后熟料结构进一步致密化,重金属浸出量减少.

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材料期刊网

生态水泥中SiO2掺量对焚烧飞灰中重金属固溶特性的影响

Effect of SiO2 Mixing Ratio on Solid Solubility of Heavy Metal in MSWI Fly Ashes in Ecological Cement

参考文献