【摘要】 城市生活垃圾焚烧发电在解决垃圾围城困境的同时也带来了新的环境问题。飞灰作为垃圾焚烧发电的副产物，因含有较高量的重金属和二噁英类物质属于危险废物。飞灰中富含Al₂O₃、SO₂、K₂O、Na₂O、CaO具有潜在利用价值，本文在分析飞灰性质的基础上，使用页岩作为添加剂，通过实验获取制备陶粒的最佳工艺条件。实验表明页岩添加比例为15%,固液比为5∶1,烧结温度1 150℃时，可以制得单颗粒陶粒，其强度为18.82 MPa, 1 h吸水率小于10%,重金属浸出浓度低于《生活垃圾焚烧飞灰污染控制技术规范（试行）》（HJ 1134—2020）中各项指标限值。更多还原

【Abstract】 Municipal solid waste incineration power plant brings new environmental problems while solves the dilemma of garbage siege. As a by-product of waste incineration power plant, fly ash is a hazardous waste for relatively high amounts of heavy metals and dioxins. Fly ash is rich in Al₂O₃, SO₂, K₂O, Na₂O, and CaO, which has potential use value. Based on the analysis of the properties of fly ash, the best process conditions for preparing ceramsite used shale as an additive were explored. The results show that, the single particle strength of the produced ceramsite reach 18.82 MPa, the water absorption rate is less than 10% in 1 hour, heavy metal leaching concentrations are below the national standard indicators of “Technical specification for pollution control of fly-ash from municipal solid waste incineration”（HJ 1134—2020）, when the shale addition ratio is 15%, with solid-to-liquid ratio 5∶1, and the sintered at 1 150 ℃.更多还原