摘要：为了研究撒料盘结构与工艺参数对涡流空气分级机预分散效果的影响,基于O-Sepa型水平涡流分级机实验系统,针对放射状与一种兼具径向凸棱和环型凸缘的撒料盘,以水泥生料为原料,撒料盘转速、喂料机转速和撒料盘结构为实验因素,物料粒度组成为评价指标,设计并完成正交实验;通过实验后物料的粒径分布研究预分散效果,分别用极差法与方差法对实验结果进行分析。结果表明:撒料盘结构对涡流空气分级机的预分散效果影响的显著性最大,其中环形凸缘撒料盘的分散效果比放射状撒料盘的更好;撒料盘电机转速与供料器电机转速对预分散效果的影响不显著,但是供料器电机转速的影响更大。

关键词：涡流空气分级机；环型凸缘；撒料盘；预分散；正交实验

Abstract：To research the effect of distribution plate structure and process parameters on predispersion, based on an O-Sepa level turbo air classifier experiment system, the radial as well as both radial protruding ridge and annular flange distribution plate were selected. Taking the cement raw materials as samples, selecting the distribution plate structure, distribution plate and feeder rotational speed as test factors, and using the particle size composition as evaluation index, an orthogonal test was designed and completed. The predispersion effect was studied through the particle size distribution after experiment, the experimental results were analyzed by the methods of range and variance. The results show that the distribution plate structure of turbo air classifier is the most important factor to affect predispersion effect, and the predispersion effect of annular flange distribution plate is better than that of radial distr ibution plate. The distribution plate and feeder rotational speed have an inapparent influence on predispersion effect, but the infuence of feeder rotational speed is greater.

Keywords: turbo air classifier；annular flange；distribution plate；predispersion；orthogonal test