Open AccessCharacterization of Low-temperature Coal Ash Behaviour under Atmospheric Pressure
Author(s) -
Manoj Balachandran,
K. A. Chandrasekharan,
A. G. Kunjomana
Publication year - 2008
Publication title -
mapana journal of sciences
Language(s) - English
Resource type - Journals
ISSN - 0975-3303
DOI - 10.12723/mjs.13.7
Subject(s) - muffle furnace , coal , carbon fibers , atmospheric pressure , environmental science , silicate , quartz , fourier transform infrared spectroscopy , fly ash , silicate minerals , chemical composition , residence time (fluid dynamics) , environmental chemistry , mineralogy , metallurgy , chemistry , materials science , chemical engineering , geology , organic chemistry , catalysis , oceanography , calcination , composite number , engineering , composite material , geotechnical engineering
The chemical composition of the virgin coal from Korba coal fields,South central India is determined with the help of Fourier transform Infrared spectroscopy. The process of burning of carbon rich coal is carried out from a temperature of 200˚C to 700˚C under atmospheric pressure and controlled air in a muffle furnace. The resultant coals are examined with FTIR. The result shows that the residence time of coal ash at high temperature has considerable influence on the composition of coal ash and little effect on the amount of unburned carbon. With increase of temperature the oxygenated groups are released mainly as H2O and CO, but also as aldehydes, alcohols and acids. The silicate and quartz mineral content remains the same throughout heating.