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    Effect of mineral distribution on the coking properties of coal

    Access Status
    Fulltext not available
    Authors
    Bai, Y.
    Zhang, Shu
    Xu, D.
    Wang, Y.
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Bai, Y. and Zhang, S. and Xu, D. and Wang, Y. 2012. Effect of mineral distribution on the coking properties of coal, pp. 1009-1012.
    Source Title
    29th Annual International Pittsburgh Coal Conference 2012, PCC 2012
    ISBN
    9781622767861
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/55158
    Collection
    • Curtin Research Publications
    Abstract

    Based on petrographic analyses, the macerals and microlithotype were analyzed to obtain the contents of carbominerite and minerite of several coal samples with similar ash contents. The microstructure of cokes which were produced from a 40 kg coking furnace was characterized to explain the effect of status and distribution of minerals on coking properties. The results show that coking coal and fat coal featured good coking properties due to the high-ratio carbominerite and low-ratio mineriteand thus could be used as blend. Comparatively, gas coal and lean coal showed poor coking properties although they also had high-ratio carbominerite. This indicates that besides the petrology index such as the reflectance of vitrinite and the activity and inertia ratio, mineral distribution had a great influence on the coking properties. Well dispersed minerals in organic matrix were playing positive roles for the coking properties, while clusters and large particles of minerals had adverse effects.

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