摘要：为了促进粉煤灰高附加值分类利用,研究粉煤灰颗粒群粒径特征与组成特征间的关系;通过颗粒分级设备将原状低钙粉煤灰分成5种不同粒径区间的颗粒群,用细度参数及粒度分布宽度参数综合量化表征粒径特征;用X射线荧光分析、X射线衍射手段分别测试颗粒群化学组成、矿物组成。结果表明,不同细度参数表征粉煤灰颗粒群细度有良好的一致性;分选后的颗粒群均匀性系数较原状粉煤灰显著增大;不同粒径特征的颗粒群所含矿物种类相似,化学组成有明显差异。

关键词：粉煤灰；颗粒群；粒径特征；组成特征

Abstract： To achieve the high value added utilization of fly ash， the relationship between particle size characteristics and component characteristics of fly ash was studied. The original low calcium fly ash were divided into 5 groups according to the particle size by the classifier. Several parameters of particle fineness and size distribution were used to assess the particle size characteristics. The chemical and mineral components of the fly ash were tested by XRF and XRD respectively. The results show that the different parameters of particle fineness align fairly well in assessing particle size. The uniformity coefficients of classified fly ash are greater than these of the original fly ash. The mineral species in the 5 groups of fly ash are basically the same while the chemical contents are obviously different. 

Keywords：fly ash; particle group; particle size characteristics; component characteristics