摘要 The microstructure of coke has an important influence on its thermal properties. The solution loss reactions of coke in CO 2 and H 2 O atmospheres were investigatedin situ observation. The results showed that the isotropic components had a more vigorous reaction than the anisotropic components, and the solution loss reaction of the fine-grained mosaic structure was faster than that of the coarse-grained mosaic structure under the CO 2 and H 2 O atmospheres. The coarse-grained mosaic structure and the flowing structure had a relatively higher anti-erosion ability in the CO 2 atmosphere than in the H 2 O atmosphere, and there was no distinct difference in the solution loss of the isotropic structure under the CO 2 and H 2 O atmospheres. The electron probe microanalysis showed that the Al–Si–Fe compounds in the carbon matrix had positive influence on the solution loss reaction of the anisotropic structure. The iron compounds were able to destroy the pore walls of coke and accelerate the solution loss rate of coke.
Abstract：The microstructure of coke has an important influence on its thermal properties. The solution loss reactions of coke in CO 2 and H 2 O atmospheres were investigatedin situ observation. The results showed that the isotropic components had a more vigorous reaction than the anisotropic components, and the solution loss reaction of the fine-grained mosaic structure was faster than that of the coarse-grained mosaic structure under the CO 2 and H 2 O atmospheres. The coarse-grained mosaic structure and the flowing structure had a relatively higher anti-erosion ability in the CO 2 atmosphere than in the H 2 O atmosphere, and there was no distinct difference in the solution loss of the isotropic structure under the CO 2 and H 2 O atmospheres. The electron probe microanalysis showed that the Al–Si–Fe compounds in the carbon matrix had positive influence on the solution loss reaction of the anisotropic structure. The iron compounds were able to destroy the pore walls of coke and accelerate the solution loss rate of coke.
Jun Zhao,Hai-bin Zuo,Chao Ling, et al. Microstructure evolution of coke under CO2 and H2O atmospheres[J]. Journal of Iron and Steel Research International, 2020, 27(7): 743-754.
2020, Vol. 27 
