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| Mechanism and influence on iron-coke property by iron ore powder |
| REN Hua-wei1,2，CHU Man-sheng2，Lü Qing-qing3，LIU Zheng-gen2，ZHANG Ming-xing3 |
（1. Coking Plant，Shasteel Company，Zhangjiagang 215600，Jiangsu，China
2. College of Material and Metallurgy，Northeastern University，Shenyang 110819，Liaoning，China
3. Ironmaking Institute，Institute of Research of Iron and Steel（Shasteel），Zhangjiagang 215600，Jiangsu，China） |
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Abstract In order to promote the industrial application of iron-coke.Research on iron ore powder ingredient and ratio in iron-coke which was made by 40 kg pilot coke oven was carried on to find how both affect iron-coke’s ash，sulfur，mechanical strength，CRI and so on. The analysis on iron-coke’s microstructure was in progress by thermal analysis，SEM and microscope.Theresult shows that iron-coke’s ash and CRI increases，mechanical strength and CSR reduces，sulfur makes little change when adding iron ore powder，so the addition ratio should not exceed 10%. Iron ore powder can catalyze the reaction between coke and CO2 and reduce initial reaction temperature. The higher the iron content，the stronger the catalysis. Iron and iron oxide after reduction scatters in iron-coke stomatal wall and carbon stroma with irregular size and shape which results in an increase in CRI and a decline in CSR.
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Received: 19 December 2017
Published: 24 August 2018
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2018, Vol. 53 
