以华能南京电厂为例，研究了燃煤电厂不同电场收捕的粉煤灰化学成分和物理性质的差异。从第一电场至第５电场，粉煤灰的平均粒径变小，化学成分也有一定的差别，而矿物相组成则基本相同；各种微量元素趋向于在四、五电场的细粒径灰中富集。采用多个装置分别收集干灰，可促使粉煤灰资源的优化。还要尽可能降低细粒径灰逸入大气中的数量并物尽其用 Taking Huaneng Nanjing Power Plant as an example, the differences between the chemical composition and physical properties of fly ash collected by different electric fields in coal-fired power plant are studied. From the first electric field to the fifth electric field, the average particle size of fly ash becomes smaller, the chemical composition is also a certain difference, while the mineral phase composition is basically the same; various trace elements tend to four, five electric field fine particle size ash In enrichment. Using multiple devices to collect dry ash, respectively, can promote the optimization of fly ash resources. But also to minimize the amount of fine-grained ash escape into the atmosphere and make the best use