Abstract
Changes in structure and combustion characteristics of anthracite after demineralization using molten caustic leaching (MCL) were investigated. The peak temperature of the treated anthracite during thermogravimetric analysis was lower (by ∼ 150 K) than that of raw coal, so that the combustion region of the treated anthracite became similar to that of bituminous coal (350–600°C). The effect of caustic treatment was so marked for anthracite that the maximum reactivity increased about four times above that of the raw coal, whereas the increase in reactivity of bituminous coal was marginal. Analytical investigation showed that coals experience carbonization during MCL treatment, with disruption of reactive hydrocarbons, and that the micro-defects formed by changes in functional group affect the combustion temperature and reactivity. The effect on surface area and particle size was marginal for the anthracite, but very pronounced for the bituminous coal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
