Simulation on mixing granular materials in screw conveyor
(2.School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China 100049)
【Abstract】Flowing and mixing granular materials of two different sizes and densities in an industrial-scale screw conveyor were studied by computer simulation using the discrete element method (DEM). The quantitative analysis results by the Lacey M showed that the mixing performance of the screw conveyor was dependent strongly on operational conditions and structural dimensions. Both screw rotating speed and material feeding rate had dominant effects on mixing efficiency, followed by granular material sizes and screw pitch in the mixing region. To reduce energy consumption and improve mixing performance in production, reasonable operation parameters of screw conveyors could be selected according to these findings.
【Keywords】 granular material; discrete element method; screw conveyor; mixing mechanism; large-scale simulation;
(Translated by KANG GD)
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