中文摘要：

流化床燃煤固硫灰渣（简称固硫灰渣）中的硫元素多以无水石膏形式存在。本文采用筛分和密度分离的方法,测定固硫灰渣中不同粒径及不同密度组分中的无水石膏含量。研究结果显示：固硫灰渣中的无水石膏易富集在粒径小、密度大的颗粒中。

英文摘要：

Sulfur element in FBC ashes exists mainly as anhydrite.The content of anhydrite in the components with different granular size and density was studied by density separation and sieving method.The results show that anhydrite in FBC ashes is concentrated in the particles with small granular size and high density.