摘 要：在机理分析的基础上导出了被分选的飞灰质量流量 Ms 的计算式‚对已知的运行条件下‚可作为设计分选机的依据。 

关键词：固气两相流；涡式分选机；机理

Abstract：Based on the mechanism analysis‚the calculating for mula of flow mass（ Ms ） of separated fly ash is deduced‚it can be the foundation of desgning separator when the operating con ditions are known． 

Keywords：solid－gas flow；separator with vortex flow；mecha nisw