一、粉煤灰的概况粉煤灰是火电厂燃烧磨细煤粉的残余物,其中一部分粗颗粒由炉底排放,称炉底灰或炉底渣,而小部分极细的烟尘通过烟囱在高空排放,绝大部分则是通过一电场和二电场电收尘器收集下来的粉煤灰。现代化的燃煤电厂通过烟囱排放的约占1～2％,98～99％的粉煤灰渣以干灰或水冲灰方式排放。在我国的多数燃煤电 I. Fly Ash Overview Fly ash is the residue of burning pulverized coal fines from thermal power plants. Part of the coarse particles are discharged from the bottom of the furnace and are called bottom ash or bottom slag. A small part of the fine dust passes through the chimney. Most of the emissions from high altitudes are collected from fly ash collected by an electric and electric-field electric dust collector. Modern coal-fired power plants emit about 1-2% of their smoke through the chimney, and 98-99% of the fly ash slag is discharged as dry ash or water ash. The majority of coal-fired electricity in our country