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| Application of coal petrography analysis on coking production |
| PANG Ke-liang，LIU Dong-jie，WANG Ming-guo，ZHAO Heng-bo，WANG Chao |
| Angang Steel Co.，Ltd.，Anshan Iron and Steel Group Co.，Anshan 114009，Liaoning，China |
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Abstract In order to improve the quality of coke and reduce the cost of coal blending at the Bayuquan Iron and Steel Subsidiary Company of Angang Steel Co.， Ltd.， the quality of coal was analyzed for coal petrology microscope， the method of coal blending was built and the application of Coal Petrograph was researched on coking production， aiming to avoid the adulteration of complicated mixing coal， optimize the method of coal blending and improve the quality of coke. The structure of coking coal and quality of coke were optimized. The results showed that after the application， the cold and hot performances of coke， M40 ， M10 ， CRI and CSR increase from 88.11%， 6.75%， 27.36%， and 62.20% up to 88.88%， 6.26%， 23.89% and 66.26%， respectively. The blending ratio of prime coking coal falls from 75% falling to 69%.
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Received: 12 January 2015
Published: 12 October 2015
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2015, Vol. 50 
