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| Effect of Alkalis on Optical Texture of Coke |
| CAI Hao-yu1,2,CHENG Shu-sen1,2,ZHAO Hong-bo1,2,LI Yang1,2,ZHAO Gui-qing3 |
（1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology of Beijing, Beijing 100083, China
2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
3. Yuzhong Iron and Steel Ltd.of JISCO, Yuzhong 730000, Gansu，China） |
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Abstract In order to research the impact of alkalis on the optical texture of coke, a gaseous impregnation experiment and a solution loss experiment on coke in 10% mass ratio alkalis atmosphere was taken. The optical texture of original coke, reacted coke without alkalis and reacted coke within alkalis was determined. The results show that, compared with anisotropic texture, isotropic texture has a higher reactivity and a lower intensity. In addition, isotropic degree of texture is higher, the reactivity is higher. But when the alkalis impregnate the coke samples, its catalytic action on isotropic texture is lower than that in anisotropic texture. So the reactivity of anisotropic texture is higher than that of isotropic texture, the result of which is that, the anisotropic texture has a higher adsorption capacity and the adsorbed alkalis has a higher infiltration capacity in coke matrix, so more graphite intercalation compound are created. Besides, increasing the proportion of gas coal in coking process can not only save the cost of coking, also enhance the alkali resistance of coke.
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Received: 05 March 2013
Published: 13 December 2013
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2013, Vol. 48 
