|
|
Microstructure evolution of coke under CO2 and H2O atmospheres |
Jun Zhao 1 , Hai-bin Zuo 1 , Chao Ling 1 , Wen-tao Guo 1 , Jing-song Wang 1 , Qing-guo Xue 1 |
1 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China |
|
|
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 investigated by in 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.
|
|
|
|
|
Cite this article: |
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.
|
|
|
|
[1] |
Run-sheng Xu, Shu-liang Deng, Heng Zheng, Wei Wang, Ming-ming Song, Wei Xu, Fang-fang Wang. Influence of initial iron ore particle size on CO2 gasification behavior and strength of ferro-coke[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 875-886. |
[2] |
Wei-li Zhang, Sheng-li Wu, Zhong-jie Hu. Analysis of operational parameters affecting denitrification rate of sintering flue gas in cross-flow activated coke purification facility[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 887-897. |
[3] |
Wan-hui Huang, Pan Zeng, Li-ping Lei. Investigation of processing–microstructure–property relationship using hot compression of a cone-shaped specimen[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 922-932. |
[4] |
Wei-wei Guo, Xiao-xin Zhang, Ying-xue Chen, Zhi-yuan Hong, Qing-zhi Yan. Homogeneity analysis of Y-bearing 12Cr ferritic/martensitic steel fabricated by vacuum induction melting and casting[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 940-951. |
[5] |
You-hui Jiang, Shun Yao, Wei Liu, Yun Han, Su-peng Liu, Geng Tian, Ai-min Zhao. Influence of annealing temperatures on microstructure evolution and mechanical properties in a low-carbon steel[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(8): 981-991. |
[6] |
Xiao‑hui Chen, Bo Chen, Xu Cheng, Guo‑chao Li, Zheng Huang. Microstructure and properties of hybrid additive manufacturing 316L component by directed energy deposition and laser remelting[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2020, 27(7): 842-848. |
|
|
|
|