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Understanding the Impact of Coal Blend Properties on the Coke Strength

Understanding the Impact of Coal Blend Properties on the Coke Strength 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

Understanding the Impact of Coal Blend Properties on the Coke Strength

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References (13)

Publisher
Springer Journals
Copyright
Copyright © Allerton Press, Inc. 2022. ISSN 1068-364X, Coke and Chemistry, 2022, Vol. 65, No. 7, pp. 253–260. © Allerton Press, Inc., 2022.
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/s1068364x22070043
Publisher site
See Article on Publisher Site

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.

Journal

Coke and ChemistrySpringer Journals

Published: Jul 1, 2022

Keywords: coal blend; size fraction; MMR; coke; CSR; CRI

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