作者: Hao Zhou , Mingxi Zhou , Ming Cheng , Xutao Guo , Yawei Li
DOI: 10.1016/J.APPLTHERMALENG.2017.08.051
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摘要: Abstract Thoroughly understanding of the thermophysical properties porous sinter is especially important for operation optimization and energy saving in integrated steel mills. Under this prospect, nondestructive X-ray microtomography was applied to characterize pore structure following simulations estimating effective thermal conductivity were performed. Three cakes produced from pilot-scale pot tests under three granulation moisture levels scanned with resolution ratio 42 µm. The reconstructed have various complex distributions, leading remarkable anisotropic conductivities complicated temperature field. pores smaller than 300 µm dominate number frequency cake, while a small amount larger 1 mm account ∼94% total volume, which determine behavior greatly. estimated samples are 0.847, 0.865, 0.558 W/m K, corresponding porosity 48.1%, 49.1% 59.4% respectively. Comparing these values similar iron agglomerates literature, some empirical correlations analytical models, results proved that CT-simulation valid approach capturing peculiar details real structure, thus predict higher accuracy simplified geometric models.