化工进展Issue(11)：3859-3863,5.DOI:10.16085/j.issn.1000-6613.2015.11.006
二次风量对LNJ-36A型气流分级机分级性能的影响
Effects of secondary air on the classification performances of LNJ-36A air classifier
摘要
Abstract
Secondary air of air classifier has important effects on the classification performances of air classifier. This paper investigated the impacts of secondary air flow change to same material,particles of different sizes and particles of same size,different material classification effect,and proposed a classifying evaluating index—the relative classification precisionδ,which could be obtained directly from coarse and fine streams size distribution,to evaluate the quality of classifying effects. The experimental results showed that relative classification precision for particles in fly ash and cement clinker. For the same sized particles,in the case of the same secondary air,the relative classification precision of fly ash with smaller particle diameter was greater than that with larger particle diameter, and the relative classification precision of cement clinker with smaller particle diameter was greater than that with larger particle diameter. For the same sized particles,under the condition of the same secondary air,the relative classification precision of fly ash with smaller proportion was larger than that with larger proportion. Optimum classification performance was obtained under the condition of 150m3/h of secondary air flow and the ratio of 0.168 to main flow air rate,using LNJ-36A air classifier to classify fly ash and cement clinker.关键词
气流分级机/二次风量/相对分级精度/分级性能Key words
air classifier/secondary air/relative classification precision/classification performance分类
化学化工引用本文复制引用
曾川,刘传慧,陈海焱,张明星,付瑜,王晓天..二次风量对LNJ-36A型气流分级机分级性能的影响[J].化工进展,2015,(11):3859-3863,5.基金项目
西南科技大学研究生创新基金（15ycx130）、四川省教育厅重点项目（13zd1111）及国家自然科学基金项目（11402218）。 （）
