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Understanding the Impact of Coal Blend Properties on the Coke Strength

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Abstract

The coal blends are used for both top and stamped charged coke oven batteries in Steel Plants which are consists of more than 5 to 7 individual coal sources depending upon the availability of coking coal. The blast furnace (BF) coke produced from the coke oven batteries are feed into both small and larger BF. The consistency of coke quality parameters is also a requirement for higher BF productivity and smooth functioning of BF. Coal preparation and coal blend quality parameters plays a very important role to get optimum quality of coke from a given blend. It is generally established that blend containing optimal reactive produces the coke of maximum strength. This studies, total 76 no’s coal blends have been prepared and corresponding coke quality have been examined. Coal blend properties such as microfines (–0.5 mm), CSN, LTGK, ash, volatile matter (VM), total reactive content, MMR, fluidity and total dilatation acts as an important factor for coke making. The hot strength properties of coke CRI and (CSR: coke strength after reaction) also influence by MMR (mean maximum reflectance) of coal blend. From this study, it has been established to find out the optimum blend quality parameters for BF coke making.

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ACKNOWLEDGMENTS

The authors are very much thankful to the management of RDCIS, SAIL, Ranchi for opportunity, guidance and execution to carry out the present research work.

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Authors and Affiliations

  1. Research and Development Centre for Iron and Steel, SAIL, 834002, Ranchi, Jharkhand, Pin, India

    B. Ghosh, B. K. Sahoo, P. K. Jha, S. K. Kushwaha, B. Chakraborty & K. K. Manjhi

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  1. B. Ghosh
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  2. B. K. Sahoo
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  3. P. K. Jha
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  4. S. K. Kushwaha
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  5. B. Chakraborty
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  6. K. K. Manjhi
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Correspondence to B. Ghosh.

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Ghosh, B., Sahoo, B.K., Jha, P.K. et al. Understanding the Impact of Coal Blend Properties on the Coke Strength. Coke Chem. 65, 253–260 (2022). https://doi.org/10.3103/S1068364X22070043

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  • DOI: https://doi.org/10.3103/S1068364X22070043

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