Optical structure and thermal and cold properties of different rank coal coke
GUO De-ying1,2, LI Dong-tao1,2, ZHANG Xiao-ming1, MA Chao1,2, DAI Xin1,2, LIU Yang1,2
1. Shougang Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China; 2. Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology, Beijing 100043, China
Abstract：In order to study the influence of coal metamorphism on coke optical structure and the relationship between coke optical structure and cold-hot properties, the maximum reflectance of vitrinite of more than 30 coking coals and the optical structure and cold and hot properties of coke after coking were tested.The results demonstrated that coke optical textures displayed regular changes with the degrees of coal metamorphism. The results show that the optical structure of coke changes regularly with the degree of metamorphism of coking coal, and the volume percent of mosaic structure can be divided into three stages: rapid increase, steady and slow decrease with the maximum reflectance of vitrinite; the change trend of ∑ISO volume percent with the maximum reflectance of vitrinite is opposite. A regression equation can be established between the thermal and cold properties of coke and the volume percent of optical structure. The reactivity of coke increases with the increase of ∑ISO volume percent, while the strength after reaction increases with the increase of the volume percent of mosaic structure. After the regression equation is used to guide coking production, the economic benefit is remarkable.
郭德英, 李东涛, 张小明, 马超, 代鑫, 刘洋. 不同变质程度煤焦炭光学组织与冷热性能[J]. 钢铁, 2020, 55(4): 20-26.
GUO De-ying, LI Dong-tao, ZHANG Xiao-ming, MA Chao, DAI Xin, LIU Yang. Optical structure and thermal and cold properties of different rank coal coke. Iron and Steel, 2020, 55(4): 20-26.
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2020, Vol. 55 
